fix: ReferenceError sectionCategories → section.categories в renderMultiSelectTabWithSections

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bible-local/02-architecture.md

@@ -40,14 +40,25 @@ Readiness guard:
 
 ## Pricing contract
 
-Prices come only from `local_pricelist_items`.
+`local_pricelist_items` is the single source of truth for both prices and component catalog (lot_name + lot_category). There is no separate component catalog table.
 
 Rules:
-- `local_components` is metadata-only;
-- quote calculation must not read prices from components;
+- `local_components` table has been removed; do not recreate it;
+- component list for the configurator autocomplete comes from `local_pricelist_items` via `ListComponents`;
+- quote calculation reads prices from `local_pricelist_items` only;
 - latest pricelist selection ignores snapshots without items;
 - auto pricelist mode stays auto and must not be persisted as an explicit resolved ID.
 
+## lot_name case handling
+
+lot_names in `local_pricelist_items` may be stored in mixed case in databases synced before normalization was enforced. `NormalizeLotName` (uppercase + trim) is applied at sync time via `PricelistItemToLocal`, but existing rows are not retroactively updated.
+
+Rules:
+- all SQLite queries that filter by `lot_name` must use `UPPER(lot_name) IN ?` or `UPPER(lot_name) = ?` with an uppercased input — never a bare `=` or `IN` on a string that may have been sourced from user input or a legacy row;
+- result map keys must preserve the original case passed by the caller (build a `uppercase → original` index before the query);
+- `GetLocalPricesForLots` is the canonical pattern: it uppercases the input list, queries with `UPPER(lot_name) IN ?`, and returns keys that match the input lot_names;
+- frontend JS must never infer a component category from the lot_name prefix; `lot_category` from `local_pricelist_items` is the only valid source; items without a category fall into the "Other" tab.
+
 ## Pricing tab layout
 
 The Pricing tab (Ценообразование) has two tables: Buy (Цена покупки) and Sale (Цена продажи).
@@ -116,6 +127,28 @@ Rules:
 - storage configurations use the same vendor_spec + PN→LOT + pricing flow as server configurations;
 - storage component categories map to existing tabs: `ENC`/`DKC`/`CTL` → Base, `HIC` → PCI (HIC-карты СХД; `HBA`/`NIC` — серверные, не смешивать), `SSD`/`HDD` → Storage (используют существующие серверные LOT), `ACC` → Accessories (используют существующие серверные LOT), `SW` → SW.
 - `DKC` = контроллерная полка (модель СХД + тип дисков + кол-во слотов + кол-во контроллеров); `CTL` = контроллер (кэш + встроенные порты); `ENC` = дисковая полка без контроллера.
+- the available config types and their localized names flow from `qt_settings.config_types` on the server;
+  QF falls back to hardcoded "server/Сервер" and "storage/СХД" when the setting is absent.
+
+## Server-driven configurator settings (`qt_settings`)
+
+QF reads four settings from `qt_settings` (MariaDB) and caches them in `local_qt_settings` (SQLite).
+They are synced during every component sync. See `bible-local/server-contract-qt-settings.md` for the
+full contract and JSON schemas.
+
+| Setting key | Effect in QF |
+|-------------|-------------|
+| `config_types` | New-config modal buttons; category allowlist per config type |
+| `tab_config` | Configurator tab structure, sections, singleSelect |
+| `always_visible_tabs` | Which tabs are shown even when empty |
+| `required_categories` | Per-config-type badge on tabs with unfilled required categories |
+
+Rules:
+- sync runs as part of the pricelist pull; failure is non-fatal (Warn log only);
+- `local_qt_settings` is a read-only cache — never written by user actions;
+- absent or unparseable settings: QF uses hardcoded fallbacks for that key only;
+- `config_types[].categories` is an allowlist: a category absent from all types is shown everywhere;
+- `qt_categories.name` and `qt_categories.name_ru` are not used by QF runtime; do not depend on them.
 
 ## Vendor BOM contract
 

bible-local/03-database.md

@@ -8,9 +8,8 @@ Main tables:
 
 | Table | Purpose |
 | --- | --- |
-| `local_components` | synced component metadata |
 | `local_pricelists` | local pricelist headers |
-| `local_pricelist_items` | local pricelist rows, the only runtime price source |
+| `local_pricelist_items` | pricelist rows; the only runtime source of prices and component catalog |
 | `local_projects` | user projects |
 | `local_configurations` | user configurations |
 | `local_configuration_versions` | immutable revision snapshots |
@@ -20,12 +19,14 @@ Main tables:
 | `connection_settings` | encrypted MariaDB connection settings |
 | `app_settings` | local app state |
 | `local_schema_migrations` | applied local migration markers |
+| `local_qt_settings` | server-pushed configurator settings cache (from `qt_settings`) |
 
 Rules:
 - cache tables may be rebuilt if local migration recovery requires it;
 - user-authored tables must not be dropped as a recovery shortcut;
-- `local_pricelist_items` is the only valid runtime source of prices;
-- configuration `items` and `vendor_spec` are stored as JSON payloads inside configuration rows.
+- `local_pricelist_items` is the only valid runtime source of prices and component catalog; do not add a separate component cache table;
+- configuration `items` and `vendor_spec` are stored as JSON payloads inside configuration rows;
+- `local_components` table has been removed; any reference to it is dead code.
 
 ## MariaDB
 
@@ -34,12 +35,13 @@ MariaDB is the central sync database (`RFQ_LOG`). Final schema as of 2026-04-15.
 ### QuoteForge tables (qt_*)
 
 Runtime read:
-- `qt_categories` — pricelist categories
+- `qt_categories` — pricelist categories (note: `name`/`name_ru` columns being removed; QF does not use them)
 - `qt_lot_metadata` — component metadata, price settings
 - `qt_pricelists` — pricelist headers (source: estimate / warehouse / competitor)
 - `qt_pricelist_items` — pricelist rows
 - `qt_partnumber_books` — partnumber book headers
 - `qt_partnumber_book_items` — PN→LOT catalog payload
+- `qt_settings` — server-pushed configurator settings; schema managed by server-side agent (see `bible-local/server-contract-qt-settings.md`)
 
 Runtime read/write:
 - `qt_projects` — projects
@@ -48,7 +50,7 @@ Runtime read/write:
 - `qt_pricelist_sync_status` — pricelist sync timestamps per user
 
 Insert-only tracking:
-- `qt_vendor_partnumber_seen` — vendor partnumbers encountered during sync
+- `qt_vendor_partnumber_seen` — vendor partnumbers encountered during sync; `lot_suggestion` column updated when user manually maps PN → LOT in vendor-spec UI
 
 Server-side only (not queried by client runtime):
 - `qt_component_usage_stats` — aggregated component popularity stats (written by server jobs)
@@ -91,11 +93,26 @@ Full column reference as of 2026-03-21 (`RFQ_LOG` final schema).
 |--------|------|-------|
 | id | bigint UNSIGNED PK AUTO_INCREMENT | |
 | code | varchar(20) UNIQUE NOT NULL | |
-| name | varchar(100) NOT NULL | |
-| name_ru | varchar(100) | |
+| name | varchar(100) NOT NULL | being removed; QF does not use at runtime |
+| name_ru | varchar(100) | being removed; QF does not use at runtime |
 | display_order | bigint DEFAULT 0 | |
 | is_required | tinyint(1) DEFAULT 0 | |
 
+### qt_settings
+Managed by the server-side agent. QF has SELECT-only access.
+See `bible-local/server-contract-qt-settings.md` for full schema and value formats.
+| Column | Type | Notes |
+|--------|------|-------|
+| name | varchar(100) PK | setting key |
+| value | TEXT NOT NULL | JSON-encoded value |
+
+### local_qt_settings (SQLite)
+Read-only cache of `qt_settings`. Synced during component sync.
+| Column | Type | Notes |
+|--------|------|-------|
+| name | text PK | setting key |
+| value | text | JSON value as-is from server |
+
 ### qt_client_schema_state
 PK: (username, hostname)
 | Column | Type | Notes |
@@ -312,6 +329,7 @@ PK: job_name
 | ignored_by | varchar(100) | |
 | created_at | datetime(3) | |
 | updated_at | datetime(3) | |
+| lot_suggestion | longtext (JSON) | nullable; set when user manually maps PN → LOT in vendor-spec UI; same format as `qt_partnumber_book_items.lots_json`; see [11-lot-suggestions.md](11-lot-suggestions.md) |
 
 ### stock_ignore_rules
 | Column | Type | Notes |

bible-local/09-vendor-spec.md

@@ -112,6 +112,41 @@ Rules:
 - lines that do not match `<description> - <quantity> шт.` are skipped;
 - no price data is present in the format; `unit_price` and `total_price` are left nil.
 
+## Nx BOM import (quantity-first)
+
+The same endpoint `POST /api/projects/:uuid/vendor-import` also accepts a quantity-first BOM
+where each item line begins with `<qty>x <description>`.
+
+Format: an optional header line ending with `, в составе:` followed by one component per line as
+`<qty>x <description>`. The `x` separator is case-insensitive; parentheses, commas, and hyphens
+inside the description are preserved as-is.
+
+Example:
+```
+Сервер G893-SD1-AAX3, в составе:
+1x 8U 2CPU 8GPU Server System (32x DDR5 DIMM Slots,8x 2.5" Hot-Swap Drive Bays, 4+4 3000W, 2x 10Gb/s RJ45, 2x IPMI RJ45)
+2x Intel Xeon 8570 (56 cores, 2.1GHz, 300MB, 350W)
+32x 64GB DDR5 ECC RDIMM
+1x GPU Nvidia HGX H200 141GB 8GPU
+3x 1.92TB NVMe PCIe SFF RI
+5x 7.68TB NVMe PCIe SFF RI
+8x 1-port 400G NDR OSFP CX7
+2x 2-port 100GbE QSFP56 CX6
+1x 2-port 10GbE RJ45
+```
+
+Rules:
+- the entire file becomes a single configuration (`server_count = 1`);
+- the header (any line ending with `, в составе:`) supplies `server_model` and `name`; the model is the
+  last whitespace-separated token before the comma;
+- without a header, `name` falls back to the uploaded filename (without extension) and `server_model` is empty;
+- the format carries no partnumbers — each line's description is stored as both `vendor_partnumber` and
+  `description`, so rows resolve through the active partnumber book when matched and otherwise stay
+  unresolved and editable in the UI;
+- lines that do not match `<qty>x <description>` are skipped;
+- no price data is present in the format; `unit_price` and `total_price` are left nil;
+- detection runs before Text BOM in the format switch (Inspur → Nx → Text).
+
 ## Pasted BOM text parsing
 
 `POST /api/vendor-spec/parse-text` is a stateless endpoint that parses pasted single-column text BOM
@@ -119,7 +154,7 @@ Rules:
 `{"rows": [{vendor_partnumber, quantity, description}], "format": "Inspur"|"Text"|""}`.
 
 This shares the exact detectors and parsers used by the file-import path
-(`ParsePastedBOMText` → `IsInspurBOM`/`parseInspurBOM`, `IsTextBOM`/`parseTextBOM`), so paste and upload
-behave identically — there is no second parser in the frontend. The configurator's BOM paste box calls
-this endpoint; an empty `rows` result (or any payload containing tabs, i.e. a real spreadsheet table)
-falls back to the manual column-mapping grid.
+(`ParsePastedBOMText` → `IsInspurBOM`/`parseInspurBOM`, `IsNxBOM`/`parseNxBOM`, `IsTextBOM`/`parseTextBOM`),
+so paste and upload behave identically — there is no second parser in the frontend. The configurator's BOM
+paste box calls this endpoint; an empty `rows` result (or any payload containing tabs, i.e. a real
+spreadsheet table) falls back to the manual column-mapping grid.

bible-local/11-lot-suggestions.md

@@ -0,0 +1,161 @@
+# 11 - Lot Suggestions (qt_vendor_partnumber_seen)
+
+## Purpose
+
+`qt_vendor_partnumber_seen` records vendor partnumbers encountered during import
+that have no mapping in the active partnumber book. When a user manually maps
+such a partnumber to one or more LOT names in the QuoteForge UI, those mappings
+are written back to the server as **lot suggestions** — hints for the team that
+maintains `qt_partnumber_book_items`.
+
+## Schema Extension
+
+Add one nullable column to `qt_vendor_partnumber_seen`:
+
+```sql
+ALTER TABLE `qt_vendor_partnumber_seen`
+  ADD COLUMN `lot_suggestion` longtext DEFAULT NULL
+    COMMENT 'JSON array [{lot_name, qty}] — user-entered LOT mappings from the UI';
+```
+
+### Updated table contract (relevant columns only)
+
+| Column | Type | Notes |
+|--------|------|-------|
+| `partnumber` | varchar(255) UNIQUE NOT NULL | natural key |
+| `lot_suggestion` | longtext (JSON) | nullable; set when user maps the PN manually |
+
+`lot_suggestion` contains the same JSON shape as `qt_partnumber_book_items.lots_json`:
+
+```json
+[
+  { "lot_name": "LOT_A", "qty": 1 },
+  { "lot_name": "LOT_B", "qty": 2 }
+]
+```
+
+Rules:
+- `null` or absent means no suggestion has been entered yet;
+- an empty array `[]` is not a valid value — use `null` instead;
+- a single PN may map to multiple lots (`lot_name` entries), each with its own `qty`;
+- the array is ordered — the order reflects the order of `lot_mappings[]` in the
+  vendor spec row at the time of last user save;
+- `qty` must be a positive integer (≥ 1).
+
+## Write Contract (QuoteForge → MariaDB)
+
+QuoteForge writes `lot_suggestion` when all of the following are true:
+
+1. The user saves a vendor BOM via `PUT /api/configs/:uuid/vendor-spec`.
+2. At least one `vendor_spec` row has a non-empty `lot_mappings[]` array (manually
+   entered or confirmed by the user — not auto-resolved from a partnumber book).
+3. The MariaDB connection is available at the time of save.
+
+For each such row:
+
+```sql
+INSERT INTO qt_vendor_partnumber_seen
+    (source_type, vendor, partnumber, description, is_ignored, last_seen_at, lot_suggestion)
+VALUES
+    ('manual', '', ?, ?, 0, NOW(3), ?)
+ON DUPLICATE KEY UPDATE
+    lot_suggestion = VALUES(lot_suggestion),
+    last_seen_at   = IF(lot_suggestion IS NULL, last_seen_at, NOW(3))
+```
+
+- `lot_suggestion` value = JSON-marshalled `lot_mappings[]` from the vendor spec item,
+  reusing the same `{lot_name, qty}` shape.
+- If the PN row already exists and `lot_suggestion` is already set, it is **overwritten**
+  with the latest user input (the user is assumed to have corrected it).
+- If the user **clears** all lot_mappings for a PN (sets to empty), no update is sent —
+  the existing `lot_suggestion` on the server is left untouched.
+- Rows where `lot_mappings[]` is empty or nil are skipped entirely (no insert, no update).
+- Writes are best-effort: a MariaDB error for one row is logged and skipped; remaining
+  rows continue. A write failure does not fail the vendor-spec save.
+
+## Read Contract (Partnumber-Book Creation Tool → MariaDB)
+
+The tool that maintains `qt_partnumber_book_items` reads `qt_vendor_partnumber_seen`
+to discover new partnumbers and their suggested mappings.
+
+### Discovery query
+
+```sql
+SELECT
+    s.id,
+    s.partnumber,
+    s.description,
+    s.vendor,
+    s.lot_suggestion,
+    s.last_seen_at,
+    b.lots_json AS book_lots_json
+FROM qt_vendor_partnumber_seen s
+LEFT JOIN qt_partnumber_book_items b ON b.partnumber = s.partnumber
+WHERE s.is_ignored = 0
+  AND s.lot_suggestion IS NOT NULL
+ORDER BY s.last_seen_at DESC;
+```
+
+### Interpretation rules
+
+| Condition | Meaning | Suggested action |
+|-----------|---------|-----------------|
+| `book_lots_json IS NULL` AND `lot_suggestion IS NOT NULL` | No book entry yet; user suggested mapping | Create new `qt_partnumber_book_items` row with `lots_json = lot_suggestion` |
+| `book_lots_json IS NOT NULL` AND `lot_suggestion IS NOT NULL` AND they differ | User corrected or extended the existing mapping | Review diff and decide whether to update `qt_partnumber_book_items` |
+| `book_lots_json IS NOT NULL` AND `lot_suggestion IS NOT NULL` AND they match | Suggestion already applied | No action needed |
+
+### Suggestion format
+
+`lot_suggestion` is valid JSON (or `null`). Parse it as an array of objects:
+
+```json
+[
+  { "lot_name": "LOT_A", "qty": 1 },
+  { "lot_name": "LOT_B", "qty": 2 }
+]
+```
+
+Map directly to `qt_partnumber_book_items.lots_json` — the formats are identical.
+
+### Multiple lots per PN
+
+One PN may have multiple suggestion entries (e.g., a bundle). The array carries
+all of them. The book-creation tool must preserve the full array when writing
+`lots_json`, not just the first element.
+
+### Qty semantics
+
+`qty` in a lot suggestion means "how many of this LOT per one occurrence of the
+vendor PN". This matches `qt_partnumber_book_items.lots_json` exactly. Example:
+a server platform that comes with 4 PSUs would produce
+`[{"lot_name": "PS_1300W_Titanium", "qty": 4}]`.
+
+## Permissions
+
+The existing `qfs_user` grant covers this column — no new permission is required:
+
+```sql
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_vendor_partnumber_seen TO 'qfs_user'@'%';
+```
+
+The book-creation tool connects with its own credentials and needs at minimum:
+
+```sql
+GRANT SELECT ON RFQ_LOG.qt_vendor_partnumber_seen TO '<book_tool_user>'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_partnumber_book_items TO '<book_tool_user>'@'%';
+```
+
+## Migration
+
+Migration is applied outside this repo (server-side DDL):
+
+```sql
+ALTER TABLE `qt_vendor_partnumber_seen`
+  ADD COLUMN IF NOT EXISTS `lot_suggestion` longtext DEFAULT NULL
+    COMMENT 'JSON [{lot_name, qty}] — user LOT suggestions from QuoteForge UI';
+```
+
+QuoteForge handles a missing column gracefully: if the migration has not run yet,
+the write with `lot_suggestion` fails with "Unknown column" (MariaDB 1054), a warning
+is logged, and the row is re-inserted without the column. The app never crashes on
+migration lag.

bible-local/README.md

@@ -15,6 +15,7 @@ Project-specific architecture and operational contracts.
 | [07-dev.md](07-dev.md) | Development commands and guardrails |
 | [09-vendor-spec.md](09-vendor-spec.md) | Vendor BOM and CFXML import contract |
 | [10-agent-api-guide.md](10-agent-api-guide.md) | End-to-end API guide for agents pricing servers from a TZ |
+| [11-lot-suggestions.md](11-lot-suggestions.md) | lot_suggestion column in qt_vendor_partnumber_seen — write/read contract for manual UI mappings |
 
 ## Rules
 

bible-local/server-contract-qt-settings.md

@@ -0,0 +1,165 @@
+# Server contract: qt_settings
+
+## Purpose
+
+`qt_settings` is a general-purpose key→JSON-value table that the price management
+application uses to push configuration into QuoteForge clients. QF reads it during
+component sync and caches the result in `local_qt_settings` (SQLite).
+
+## Required MariaDB changes (implemented by server-side agent)
+
+```sql
+CREATE TABLE IF NOT EXISTS qt_settings (
+    name  VARCHAR(100) NOT NULL PRIMARY KEY,
+    value TEXT         NOT NULL   -- JSON-encoded value
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+GRANT SELECT ON RFQ_LOG.qt_settings TO 'qfs_user'@'%';
+```
+
+## Settings consumed by QuoteForge
+
+All values are JSON. Missing or unparseable entries are silently skipped; QF
+falls back to hardcoded defaults for each missing key.
+
+---
+
+### `config_types`
+
+Defines the available device configuration types, their localized names, and the
+category codes that are allowed for each type. QF uses this for:
+- the new-config modal (button list + labels);
+- the configurator's category filter per `config_type`.
+
+**Value format:** JSON array of objects.
+
+```json
+[
+  {
+    "code":          "server",
+    "name_ru":       "Сервер",
+    "display_order": 10,
+    "categories":    [
+      "MB","CPU","MEM","RAID",
+      "SSD","HDD","M2","EDSFF","HHHL",
+      "GPU","NIC","HCA","DPU","HBA",
+      "PSU","PS","ACC","RISERS","CARD","BB"
+    ]
+  },
+  {
+    "code":          "storage",
+    "name_ru":       "СХД",
+    "display_order": 20,
+    "categories":    [
+      "DKC","CPU","MEM","PS",
+      "SSD","HDD","M2","EDSFF","HHHL",
+      "NIC","HBA","HCA","ACC","CARD"
+    ]
+  }
+]
+```
+
+Fields:
+| Field | Type | Description |
+|-------|------|-------------|
+| `code` | string | Identifier stored on `qt_configurations.config_type`. Must be stable. |
+| `name_ru` | string | Display name in Russian for the QF UI. |
+| `display_order` | int | Sort order for the modal button list. |
+| `categories` | string[] | Allowlist of LOT category codes visible in this config type. A category absent from ALL entries is visible in all types. |
+
+---
+
+### `tab_config`
+
+Defines the configurator tab layout: which tabs exist, which categories each tab
+contains, optional sub-sections within a tab, and whether the tab uses
+single-select mode.
+
+**Value format:** JSON array of tab objects (ordered — defines tab bar order).
+
+```json
+[
+  {
+    "key":           "base",
+    "label":         "Base",
+    "single_select": true,
+    "categories":    ["MB","CPU","MEM","ENC","DKC","CTL"],
+    "sections":      null
+  },
+  {
+    "key":           "storage",
+    "label":         "Storage",
+    "single_select": false,
+    "categories":    ["RAID","M2","SSD","HDD","EDSFF","HHHL"],
+    "sections": [
+      { "title": "RAID Контроллеры", "categories": ["RAID"] },
+      { "title": "Диски",            "categories": ["M2","SSD","HDD","EDSFF","HHHL"] }
+    ]
+  },
+  {
+    "key":           "pci",
+    "label":         "PCI",
+    "single_select": false,
+    "categories":    ["GPU","DPU","NIC","HCA","HBA","HIC"],
+    "sections": [
+      { "title": "GPU / DPU", "categories": ["GPU","DPU"] },
+      { "title": "NIC / HCA", "categories": ["NIC","HCA"] },
+      { "title": "HBA",       "categories": ["HBA"] },
+      { "title": "HIC",       "categories": ["HIC"] }
+    ]
+  },
+  { "key": "power",       "label": "Power",       "single_select": false, "categories": ["PS","PSU"] },
+  { "key": "accessories", "label": "Accessories", "single_select": false, "categories": ["ACC","CARD"] },
+  { "key": "sw",          "label": "SW",          "single_select": false, "categories": ["SW"] }
+]
+```
+
+The QF frontend always appends an "other" tab for any categories not listed here.
+
+---
+
+### `always_visible_tabs`
+
+Tab keys that are always shown in the configurator regardless of whether they
+contain any items. Other tabs are hidden when empty.
+
+**Value format:** JSON string array.
+
+```json
+["base", "storage", "pci"]
+```
+
+---
+
+### `required_categories`
+
+Category codes that must have at least one LOT selected for a configuration to
+be considered complete. Keyed by `config_type` code. QF uses this to show a
+badge on the tab label when required categories are missing.
+
+**Value format:** JSON object mapping config_type code → string array.
+
+```json
+{
+  "server":  ["CPU", "MEM", "BB"],
+  "storage": ["DKC", "CPU", "MEM"]
+}
+```
+
+---
+
+## Backward compatibility
+
+- If `qt_settings` does not exist (old server): QF logs `Warn` during sync and
+  leaves `local_qt_settings` empty. The frontend falls back to hardcoded defaults
+  for all four settings. No crash, no data loss.
+- If a specific key is absent from `qt_settings`: QF falls back to the hardcoded
+  default for that key only.
+- Old QF clients that do not know about `local_qt_settings` continue to use their
+  hardcoded JS constants unchanged.
+
+## Note on `qt_categories`
+
+`qt_categories.name` and `qt_categories.name_ru` are being removed.
+QF runtime does not depend on them — `GetCategories` derives `Name` from the
+category code string stored in `local_components`.

cmd/qfs/main.go

@@ -779,7 +779,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	quoteHandler := handlers.NewQuoteHandler(quoteService)
 	exportHandler := handlers.NewExportHandler(exportService, configService, projectService, dbUsername)
 	pricelistHandler := handlers.NewPricelistHandler(local)
-	vendorSpecHandler := handlers.NewVendorSpecHandler(local)
+	vendorSpecHandler := handlers.NewVendorSpecHandler(local, syncService)
 	partnumberBooksHandler := handlers.NewPartnumberBooksHandler(local)
 	respondError := handlers.RespondError
 	syncHandler, err := handlers.NewSyncHandler(local, syncService, connMgr, templatesPath, backgroundSyncInterval)
@@ -894,6 +894,27 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	router.GET("/pricelists/:id", webHandler.PricelistDetail)
 	router.GET("/partnumber-books", webHandler.PartnumberBooks)
 
+	// Short project URLs: /:code → main variant, /:code/:variant → named variant
+	router.GET("/:code", func(c *gin.Context) {
+		code := c.Param("code")
+		project, err := projectService.GetByCode(code)
+		if err != nil {
+			c.Redirect(http.StatusFound, "/projects")
+			return
+		}
+		c.Redirect(http.StatusFound, "/projects/"+project.UUID)
+	})
+	router.GET("/:code/:variant", func(c *gin.Context) {
+		code := c.Param("code")
+		variant := c.Param("variant")
+		project, err := projectService.GetByCodeAndVariant(code, variant)
+		if err != nil {
+			c.Redirect(http.StatusFound, "/projects")
+			return
+		}
+		c.Redirect(http.StatusFound, "/projects/"+project.UUID)
+	})
+
 	// htmx partials
 	partials := router.Group("/partials")
 	{
@@ -919,6 +940,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 
 		// Categories (public)
 		api.GET("/categories", componentHandler.GetCategories)
+		api.GET("/configurator-settings", componentHandler.GetConfiguratorSettings)
 
 		// Quote (public)
 		quote := api.Group("/quote")
@@ -1147,6 +1169,15 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusOK, config)
 			})
 
+			configs.POST("/:uuid/snapshot", func(c *gin.Context) {
+				uuid := c.Param("uuid")
+				if err := configService.SnapshotCurrentState(uuid); err != nil {
+					respondError(c, http.StatusInternalServerError, "internal server error", err)
+					return
+				}
+				c.JSON(http.StatusOK, gin.H{"ok": true})
+			})
+
 			configs.PATCH("/:uuid/project", func(c *gin.Context) {
 				uuid := c.Param("uuid")
 				var req struct {
@@ -1516,7 +1547,9 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				project, err := projectService.Create(dbUsername, &req)
 				if err != nil {
 					switch {
-					case errors.Is(err, services.ErrReservedMainVariant):
+					case errors.Is(err, services.ErrReservedMainVariant),
+						errors.Is(err, services.ErrProjectCodeInvalidChars),
+						errors.Is(err, services.ErrProjectVariantInvalidChars):
 						respondError(c, http.StatusBadRequest, "invalid request", err)
 					case errors.Is(err, services.ErrProjectCodeExists):
 						respondError(c, http.StatusConflict, "conflict detected", err)
@@ -1554,7 +1587,9 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				if err != nil {
 					switch {
 					case errors.Is(err, services.ErrReservedMainVariant),
-						errors.Is(err, services.ErrCannotRenameMainVariant):
+						errors.Is(err, services.ErrCannotRenameMainVariant),
+						errors.Is(err, services.ErrProjectCodeInvalidChars),
+						errors.Is(err, services.ErrProjectVariantInvalidChars):
 						respondError(c, http.StatusBadRequest, "invalid request", err)
 					case errors.Is(err, services.ErrProjectCodeExists):
 						respondError(c, http.StatusConflict, "conflict detected", err)
@@ -1776,7 +1811,6 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 			syncAPI.GET("/readiness", syncHandler.GetReadiness)
 			syncAPI.GET("/info", syncHandler.GetInfo)
 			syncAPI.GET("/users-status", syncHandler.GetUsersStatus)
-			syncAPI.POST("/components", syncHandler.SyncComponents)
 			syncAPI.POST("/pricelists", syncHandler.SyncPricelists)
 			syncAPI.POST("/partnumber-books", syncHandler.SyncPartnumberBooks)
 			syncAPI.POST("/partnumber-seen", syncHandler.ReportPartnumberSeen)

internal/article/categories_test.go

@@ -45,38 +45,55 @@ func TestResolveLotCategoriesStrict_MissingCategoryReturnsError(t *testing.T) {
 	}
 }
 
-func TestResolveLotCategoriesStrict_FallbackToLocalComponents(t *testing.T) {
+func TestResolveLotCategoriesStrict_FallbackToLatestPricelist(t *testing.T) {
 	local, err := localdb.New(filepath.Join(t.TempDir(), "local.db"))
 	if err != nil {
 		t.Fatalf("init local db: %v", err)
 	}
 	t.Cleanup(func() { _ = local.Close() })
 
+	// Older pricelist used by the configuration — CPU_B has no category here
 	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
 		ServerID:  2,
 		Source:    "estimate",
 		Version:   "S-2026-02-11-002",
-		Name:      "test",
+		Name:      "old",
+		IsActive:  false,
+		CreatedAt: time.Now().Add(-time.Hour),
+		SyncedAt:  time.Now().Add(-time.Hour),
+	}); err != nil {
+		t.Fatalf("save old pricelist: %v", err)
+	}
+	oldPL, err := local.GetLocalPricelistByServerID(2)
+	if err != nil {
+		t.Fatalf("get old pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{PricelistID: oldPL.ID, LotName: "CPU_B", LotCategory: "", Price: 10},
+	}); err != nil {
+		t.Fatalf("save old pricelist items: %v", err)
+	}
+
+	// Newer active pricelist — CPU_B has category set
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  3,
+		Source:    "estimate",
+		Version:   "S-2026-02-11-003",
+		Name:      "latest",
+		IsActive:  true,
 		CreatedAt: time.Now(),
 		SyncedAt:  time.Now(),
 	}); err != nil {
-		t.Fatalf("save local pricelist: %v", err)
+		t.Fatalf("save latest pricelist: %v", err)
 	}
-	localPL, err := local.GetLocalPricelistByServerID(2)
+	latestPL, err := local.GetLocalPricelistByServerID(3)
 	if err != nil {
-		t.Fatalf("get local pricelist: %v", err)
+		t.Fatalf("get latest pricelist: %v", err)
 	}
 	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
-		{PricelistID: localPL.ID, LotName: "CPU_B", LotCategory: "", Price: 10},
+		{PricelistID: latestPL.ID, LotName: "CPU_B", LotCategory: "CPU", Price: 10},
 	}); err != nil {
-		t.Fatalf("save local items: %v", err)
-	}
-	if err := local.DB().Create(&localdb.LocalComponent{
-		LotName:        "CPU_B",
-		Category:       "CPU",
-		LotDescription: "cpu",
-	}).Error; err != nil {
-		t.Fatalf("save local components: %v", err)
+		t.Fatalf("save latest pricelist items: %v", err)
 	}
 
 	cats, err := ResolveLotCategoriesStrict(local, 2, []string{"CPU_B"})

internal/handlers/component.go

@@ -125,3 +125,102 @@ func (h *ComponentHandler) GetCategories(c *gin.Context) {
 
 	c.JSON(http.StatusOK, models.DefaultCategories)
 }
+
+func (h *ComponentHandler) GetConfiguratorSettings(c *gin.Context) {
+	s, _ := h.localDB.GetConfiguratorSettings()
+	if s == nil {
+		s = &localdb.ConfiguratorSettings{}
+	}
+
+	if len(s.ConfigTypes) == 0 {
+		s.ConfigTypes = defaultConfigTypes()
+	}
+	if len(s.TabConfig) == 0 {
+		s.TabConfig = defaultTabConfig()
+	}
+	if len(s.AlwaysVisibleTabs) == 0 {
+		s.AlwaysVisibleTabs = []string{"base", "storage", "pci"}
+	}
+	if len(s.RequiredCategories) == 0 {
+		s.RequiredCategories = map[string][]string{"server": {"CPU", "MEM", "BB"}}
+	}
+
+	c.JSON(http.StatusOK, s)
+}
+
+func defaultConfigTypes() []localdb.ConfigTypeDef {
+	return []localdb.ConfigTypeDef{
+		{
+			Code:         "server",
+			NameRu:       "Сервер",
+			DisplayOrder: 10,
+			Categories: []string{
+				"MB", "CPU", "MEM", "RAID",
+				"SSD", "HDD", "M2", "EDSFF", "HHHL",
+				"GPU", "NIC", "HCA", "DPU", "HBA",
+				"PSU", "PS", "ACC", "RISERS", "CARD", "BB",
+			},
+		},
+		{
+			Code:         "storage",
+			NameRu:       "СХД",
+			DisplayOrder: 20,
+			Categories: []string{
+				"DKC", "CPU", "MEM", "PS",
+				"SSD", "HDD", "M2", "EDSFF", "HHHL",
+				"NIC", "HBA", "HCA", "ACC", "CARD",
+			},
+		},
+	}
+}
+
+func defaultTabConfig() []localdb.TabDef {
+	return []localdb.TabDef{
+		{
+			Key:          "base",
+			Label:        "Base",
+			SingleSelect: true,
+			Categories:   []string{"MB", "CPU", "MEM", "ENC", "DKC", "CTL"},
+		},
+		{
+			Key:          "storage",
+			Label:        "Storage",
+			SingleSelect: false,
+			Categories:   []string{"RAID", "M2", "SSD", "HDD", "EDSFF", "HHHL"},
+			Sections: []localdb.TabSection{
+				{Title: "RAID Контроллеры", Categories: []string{"RAID"}},
+				{Title: "Диски", Categories: []string{"M2", "SSD", "HDD", "EDSFF", "HHHL"}},
+			},
+		},
+		{
+			Key:          "pci",
+			Label:        "PCI",
+			SingleSelect: false,
+			Categories:   []string{"GPU", "DPU", "NIC", "HCA", "HBA", "HIC"},
+			Sections: []localdb.TabSection{
+				{Title: "GPU / DPU", Categories: []string{"GPU", "DPU"}},
+				{Title: "NIC / HCA", Categories: []string{"NIC", "HCA"}},
+				{Title: "HBA", Categories: []string{"HBA"}},
+				{Title: "HIC", Categories: []string{"HIC"}},
+			},
+		},
+		{
+			Key:          "power",
+			Label:        "Power",
+			SingleSelect: false,
+			Categories:   []string{"PS", "PSU"},
+		},
+		{
+			Key:          "accessories",
+			Label:        "Accessories",
+			SingleSelect: false,
+			Categories:   []string{"ACC", "CARD"},
+		},
+		{
+			Key:          "sw",
+			Label:        "SW",
+			SingleSelect: false,
+			Categories:   []string{"SW"},
+		},
+	}
+}

internal/handlers/pricelist.go

@@ -177,22 +177,12 @@ func (h *PricelistHandler) GetItems(c *gin.Context) {
 		return
 	}
 
-	lotNames := make([]string, len(items))
-	for i, item := range items {
-		lotNames[i] = item.LotName
-	}
-	descMap, err := h.localDB.GetLocalComponentDescriptionsByLotNames(lotNames)
-	if err != nil {
-		RespondError(c, http.StatusInternalServerError, "internal server error", err)
-		return
-	}
-
 	resultItems := make([]gin.H, 0, len(items))
 	for _, item := range items {
 		resultItems = append(resultItems, gin.H{
 			"id":               item.ID,
 			"lot_name":         item.LotName,
-			"lot_description":  descMap[item.LotName],
+			"lot_description":  "",
 			"price":            item.Price,
 			"category":         item.LotCategory,
 			"available_qty":    item.AvailableQty,

internal/handlers/support_bundle.go

@@ -74,7 +74,7 @@ func (h *SupportBundleHandler) DownloadBundle(c *gin.Context) {
 
 	// local_db_stats.json
 	writeJSON("local_db_stats.json", map[string]any{
-		"components":                   h.localDB.CountLocalComponents(),
+		"components":                   h.localDB.CountComponents(),
 		"configurations":               h.localDB.CountConfigurations(),
 		"projects":                     h.localDB.CountProjects(),
 		"pricelists":                   h.localDB.CountLocalPricelists(),
@@ -139,6 +139,7 @@ func (h *SupportBundleHandler) DownloadBundle(c *gin.Context) {
 			CreatedAt time.Time `json:"created_at"`
 			SyncedAt  time.Time `json:"synced_at"`
 			IsUsed    bool      `json:"is_used"`
+			IsActive  bool      `json:"is_active"`
 		}
 		bySource := map[string][]plEntry{}
 		for _, pl := range pricelists {
@@ -150,12 +151,78 @@ func (h *SupportBundleHandler) DownloadBundle(c *gin.Context) {
 				CreatedAt: pl.CreatedAt,
 				SyncedAt:  pl.SyncedAt,
 				IsUsed:    pl.IsUsed,
+				IsActive:  pl.IsActive,
 			}
 			bySource[pl.Source] = append(bySource[pl.Source], e)
 		}
 		writeJSON("pricelists.json", bySource)
 	}
 
+	// pricelist_coverage.json — for each local estimate pricelist: item count by lot_category
+	if pl, err := h.localDB.GetLatestLocalPricelist(); err == nil {
+		type catRow struct {
+			Category string `json:"category"`
+			Count    int64  `json:"count"`
+		}
+		type plCoverage struct {
+			Version    string   `json:"version"`
+			ServerID   uint     `json:"server_id"`
+			TotalItems int64    `json:"total_items"`
+			Categories []catRow `json:"categories"`
+		}
+		rows, total, catErr := h.localDB.GetLocalPricelistCoverageByCategory(pl.ID)
+		if catErr == nil {
+			cats := make([]catRow, 0, len(rows))
+			for cat, cnt := range rows {
+				cats = append(cats, catRow{Category: cat, Count: cnt})
+			}
+			writeJSON("pricelist_coverage.json", plCoverage{
+				Version:    pl.Version,
+				ServerID:   pl.ServerID,
+				TotalItems: total,
+				Categories: cats,
+			})
+		}
+	}
+
+	// configurator_settings.json — what /api/configurator-settings actually returns
+	if cfgSettings, err := h.localDB.GetConfiguratorSettings(); err == nil {
+		writeJSON("configurator_settings.json", cfgSettings)
+	} else {
+		writeJSON("configurator_settings.json", map[string]any{"error": err.Error()})
+	}
+
+	// component_categories.json — distinct categories in active estimate pricelist
+	if cats, err := h.localDB.GetLocalComponentCategories(); err == nil {
+		writeJSON("component_categories.json", cats)
+	}
+
+	// autocomplete_lots.json — per-category breakdown of lots with their prices
+	// Mirrors what filterAutocomplete() works with: lot_name + estimate_price per category.
+	if pl, err := h.localDB.GetLatestLocalPricelist(); err == nil {
+		if items, err := h.localDB.GetLocalPricelistItems(pl.ID); err == nil {
+			type lotEntry struct {
+				LotName  string  `json:"lot_name"`
+				Price    float64 `json:"price"`
+				HasPrice bool    `json:"has_price"`
+			}
+			byCategory := map[string][]lotEntry{}
+			for _, it := range items {
+				entry := lotEntry{
+					LotName:  it.LotName,
+					Price:    it.Price,
+					HasPrice: it.Price > 0,
+				}
+				byCategory[it.LotCategory] = append(byCategory[it.LotCategory], entry)
+			}
+			writeJSON("autocomplete_lots.json", map[string]any{
+				"pricelist_version": pl.Version,
+				"pricelist_id":      pl.ServerID,
+				"by_category":       byCategory,
+			})
+		}
+	}
+
 	// schema_migrations.json
 	migrations, err := h.localDB.GetSchemaMigrations()
 	if err != nil {
@@ -163,6 +230,44 @@ func (h *SupportBundleHandler) DownloadBundle(c *gin.Context) {
 	}
 	writeJSON("schema_migrations.json", migrations)
 
+	// latest_pricelist_items.json — all items from the most recent active estimate pricelist
+	if pl, err := h.localDB.GetLatestLocalPricelist(); err == nil {
+		if items, err := h.localDB.GetLocalPricelistItems(pl.ID); err == nil {
+			type plItem struct {
+				LotName     string  `json:"lot_name"`
+				LotCategory string  `json:"lot_category"`
+				Price       float64 `json:"price"`
+			}
+			out := make([]plItem, len(items))
+			for i, it := range items {
+				out[i] = plItem{
+					LotName:     it.LotName,
+					LotCategory: it.LotCategory,
+					Price:       it.Price,
+				}
+			}
+			writeJSON("latest_pricelist_items.json", map[string]any{
+				"pricelist_version": pl.Version,
+				"pricelist_id":      pl.ServerID,
+				"source":            pl.Source,
+				"item_count":        len(out),
+				"items":             out,
+			})
+		}
+	}
+
+	// local.db — full SQLite database file (for deep diagnostics)
+	if dbPath := h.localDB.DBFilePath(); dbPath != "" {
+		if f, err := os.Open(dbPath); err == nil {
+			defer f.Close()
+			if w, err := zw.Create("local.db"); err == nil {
+				if _, err := io.Copy(w, f); err != nil {
+					slog.Warn("support bundle: error copying local.db", "err", err)
+				}
+			}
+		}
+	}
+
 	// app.log (tail 5 MiB)
 	if h.logFilePath != "" {
 		if f, err := os.Open(h.logFilePath); err == nil {

internal/handlers/sync.go

@@ -50,7 +50,6 @@ func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, connMgr
 
 // SyncStatusResponse represents the sync status
 type SyncStatusResponse struct {
-	LastComponentSync       *time.Time          `json:"last_component_sync"`
 	LastPricelistSync       *time.Time          `json:"last_pricelist_sync"`
 	LastPricelistAttemptAt  *time.Time          `json:"last_pricelist_attempt_at,omitempty"`
 	LastPricelistSyncStatus string              `json:"last_pricelist_sync_status,omitempty"`
@@ -61,7 +60,6 @@ type SyncStatusResponse struct {
 	ComponentsCount         int64               `json:"components_count"`
 	PricelistsCount         int64               `json:"pricelists_count"`
 	ServerPricelists        int                 `json:"server_pricelists"`
-	NeedComponentSync       bool                `json:"need_component_sync"`
 	NeedPricelistSync       bool                `json:"need_pricelist_sync"`
 	Readiness               *sync.SyncReadiness `json:"readiness,omitempty"`
 }
@@ -80,19 +78,16 @@ type SyncReadinessResponse struct {
 func (h *SyncHandler) GetStatus(c *gin.Context) {
 	connStatus := h.connMgr.GetStatus()
 	isOnline := connStatus.IsConnected && strings.TrimSpace(connStatus.LastError) == ""
-	lastComponentSync := h.localDB.GetComponentSyncTime()
 	lastPricelistSync := h.localDB.GetLastSyncTime()
-	componentsCount := h.localDB.CountLocalComponents()
+	componentsCount := h.localDB.CountComponents()
 	pricelistsCount := h.localDB.CountLocalPricelists()
 	lastPricelistAttemptAt := h.localDB.GetLastPricelistSyncAttemptAt()
 	lastPricelistSyncStatus := h.localDB.GetLastPricelistSyncStatus()
 	lastPricelistSyncError := h.localDB.GetLastPricelistSyncError()
 	hasFailedSync := strings.EqualFold(lastPricelistSyncStatus, "failed")
-	needComponentSync := h.localDB.NeedComponentSync(24)
 	readiness := h.getReadinessLocal()
 
 	c.JSON(http.StatusOK, SyncStatusResponse{
-		LastComponentSync:       lastComponentSync,
 		LastPricelistSync:       lastPricelistSync,
 		LastPricelistAttemptAt:  lastPricelistAttemptAt,
 		LastPricelistSyncStatus: lastPricelistSyncStatus,
@@ -103,7 +98,6 @@ func (h *SyncHandler) GetStatus(c *gin.Context) {
 		ComponentsCount:         componentsCount,
 		PricelistsCount:         pricelistsCount,
 		ServerPricelists:        0,
-		NeedComponentSync:       needComponentSync,
 		NeedPricelistSync:       lastPricelistSync == nil || hasFailedSync,
 		Readiness:               readiness,
 	})
@@ -169,48 +163,6 @@ type SyncResultResponse struct {
 	Duration string `json:"duration"`
 }
 
-// SyncComponents syncs components from MariaDB to local SQLite
-// POST /api/sync/components
-func (h *SyncHandler) SyncComponents(c *gin.Context) {
-	if !h.ensureSyncReadiness(c) {
-		return
-	}
-
-	// Get database connection from ConnectionManager
-	mariaDB, err := h.connMgr.GetDB()
-	if err != nil {
-		c.JSON(http.StatusServiceUnavailable, gin.H{
-			"success": false,
-			"error":   "database connection failed",
-		})
-		_ = c.Error(err)
-		return
-	}
-
-	now := time.Now()
-	result, err := h.localDB.SyncComponents(mariaDB)
-	if err != nil {
-		_ = h.localDB.SetComponentSyncResult("error", err.Error(), now)
-		h.localDB.AppendSyncLog("components", "error", err.Error(), 0, now, time.Since(now).Milliseconds())
-		slog.Error("component sync failed", "error", err)
-		c.JSON(http.StatusInternalServerError, gin.H{
-			"success": false,
-			"error":   "component sync failed",
-		})
-		_ = c.Error(err)
-		return
-	}
-	_ = h.localDB.SetComponentSyncResult("ok", "", now)
-	h.localDB.AppendSyncLog("components", "ok", "", result.TotalSynced, now, result.Duration.Milliseconds())
-
-	c.JSON(http.StatusOK, SyncResultResponse{
-		Success:  true,
-		Message:  "Components synced successfully",
-		Synced:   result.TotalSynced,
-		Duration: result.Duration.String(),
-	})
-}
-
 // SyncPricelists syncs pricelists from MariaDB to local SQLite
 // POST /api/sync/pricelists
 func (h *SyncHandler) SyncPricelists(c *gin.Context) {
@@ -232,6 +184,10 @@ func (h *SyncHandler) SyncPricelists(c *gin.Context) {
 	}
 	h.localDB.AppendSyncLog("pricelists", "ok", "", synced, startTime, time.Since(startTime).Milliseconds())
 
+	if _, err := h.syncService.PullPartnumberBooks(); err != nil {
+		slog.Warn("partnumber books pull failed after pricelist sync", "error", err)
+	}
+
 	c.JSON(http.StatusOK, SyncResultResponse{
 		Success:  true,
 		Message:  "Pricelists synced successfully",
@@ -272,7 +228,6 @@ type SyncAllResponse struct {
 	Success                bool   `json:"success"`
 	Message                string `json:"message"`
 	PendingPushed          int    `json:"pending_pushed"`
-	ComponentsSynced       int    `json:"components_synced"`
 	PricelistsSynced       int    `json:"pricelists_synced"`
 	ProjectsImported       int    `json:"projects_imported"`
 	ProjectsUpdated        int    `json:"projects_updated"`
@@ -293,7 +248,7 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 	}
 
 	startTime := time.Now()
-	var pendingPushed, componentsSynced, pricelistsSynced int
+	var pricelistsSynced int
 
 	// Push local pending changes first (projects/configurations)
 	pendingPushed, err := h.syncService.PushPendingChanges()
@@ -307,34 +262,6 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 		return
 	}
 
-	// Sync components
-	mariaDB, err := h.connMgr.GetDB()
-	if err != nil {
-		c.JSON(http.StatusServiceUnavailable, gin.H{
-			"success": false,
-			"error":   "database connection failed",
-		})
-		_ = c.Error(err)
-		return
-	}
-
-	compNow := time.Now()
-	compResult, err := h.localDB.SyncComponents(mariaDB)
-	if err != nil {
-		_ = h.localDB.SetComponentSyncResult("error", err.Error(), compNow)
-		h.localDB.AppendSyncLog("components", "error", err.Error(), 0, compNow, time.Since(compNow).Milliseconds())
-		slog.Error("component sync failed during full sync", "error", err)
-		c.JSON(http.StatusInternalServerError, gin.H{
-			"success": false,
-			"error":   "component sync failed",
-		})
-		_ = c.Error(err)
-		return
-	}
-	_ = h.localDB.SetComponentSyncResult("ok", "", compNow)
-	h.localDB.AppendSyncLog("components", "ok", "", compResult.TotalSynced, compNow, compResult.Duration.Milliseconds())
-	componentsSynced = compResult.TotalSynced
-
 	// Sync pricelists
 	plNow := time.Now()
 	pricelistsSynced, err = h.syncService.SyncPricelists()
@@ -342,16 +269,19 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 		h.localDB.AppendSyncLog("pricelists", "error", err.Error(), 0, plNow, time.Since(plNow).Milliseconds())
 		slog.Error("pricelist sync failed during full sync", "error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
-			"success":           false,
-			"error":             "pricelist sync failed",
-			"pending_pushed":    pendingPushed,
-			"components_synced": componentsSynced,
+			"success":        false,
+			"error":          "pricelist sync failed",
+			"pending_pushed": pendingPushed,
 		})
 		_ = c.Error(err)
 		return
 	}
 	h.localDB.AppendSyncLog("pricelists", "ok", "", pricelistsSynced, plNow, time.Since(plNow).Milliseconds())
 
+	if _, err := h.syncService.PullPartnumberBooks(); err != nil {
+		slog.Warn("partnumber books pull failed during full sync", "error", err)
+	}
+
 	projectsResult, err := h.syncService.ImportProjectsToLocal()
 	if err != nil {
 		slog.Error("project import failed during full sync", "error", err)
@@ -359,7 +289,6 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 			"success":           false,
 			"error":             "project import failed",
 			"pending_pushed":    pendingPushed,
-			"components_synced": componentsSynced,
 			"pricelists_synced": pricelistsSynced,
 		})
 		_ = c.Error(err)
@@ -373,7 +302,6 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 			"success":           false,
 			"error":             "configuration import failed",
 			"pending_pushed":    pendingPushed,
-			"components_synced": componentsSynced,
 			"pricelists_synced": pricelistsSynced,
 			"projects_imported": projectsResult.Imported,
 			"projects_updated":  projectsResult.Updated,
@@ -387,7 +315,6 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 		Success:                true,
 		Message:                "Full sync completed successfully",
 		PendingPushed:          pendingPushed,
-		ComponentsSynced:       componentsSynced,
 		PricelistsSynced:       pricelistsSynced,
 		ProjectsImported:       projectsResult.Imported,
 		ProjectsUpdated:        projectsResult.Updated,
@@ -548,7 +475,7 @@ func (h *SyncHandler) GetInfo(c *gin.Context) {
 	// Get local counts
 	configCount := h.localDB.CountConfigurations()
 	projectCount := h.localDB.CountProjects()
-	componentCount := h.localDB.CountLocalComponents()
+	componentCount := h.localDB.CountComponents()
 	pricelistCount := h.localDB.CountLocalPricelists()
 
 	// Get error count (only changes with LastError != "")

internal/handlers/vendor_spec.go

@@ -4,11 +4,12 @@ import (
 	"errors"
 	"log/slog"
 	"net/http"
-	"strings"
 
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/repository"
 	"git.mchus.pro/mchus/quoteforge/internal/services"
+	syncsvc "git.mchus.pro/mchus/quoteforge/internal/services/sync"
 	"github.com/gin-gonic/gin"
 )
 
@@ -16,12 +17,14 @@ import (
 type VendorSpecHandler struct {
 	localDB       *localdb.LocalDB
 	configService *services.LocalConfigurationService
+	syncService   *syncsvc.Service // optional; nil = no server push
 }
 
-func NewVendorSpecHandler(localDB *localdb.LocalDB) *VendorSpecHandler {
+func NewVendorSpecHandler(localDB *localdb.LocalDB, syncService *syncsvc.Service) *VendorSpecHandler {
 	return &VendorSpecHandler{
 		localDB:       localDB,
 		configService: services.NewLocalConfigurationService(localDB, nil, nil, func() bool { return false }),
+		syncService:   syncService,
 	}
 }
 
@@ -111,9 +114,57 @@ func (h *VendorSpecHandler) PutVendorSpec(c *gin.Context) {
 		return
 	}
 
+	// Push manual lot mappings as suggestions to the server (best-effort, non-blocking).
+	h.pushLotSuggestions(body.VendorSpec)
+
 	c.JSON(http.StatusOK, gin.H{"vendor_spec": spec})
 }
 
+// pushLotSuggestions sends manual PN→LOT mappings to qt_vendor_partnumber_seen.lot_suggestion.
+// Errors are logged and silently dropped — they must not affect the HTTP response.
+func (h *VendorSpecHandler) pushLotSuggestions(spec []localdb.VendorSpecItem) {
+	if h.syncService == nil {
+		return
+	}
+
+	var items []syncsvc.SeenPartnumber
+	for _, row := range spec {
+		if row.VendorPartnumber == "" || len(row.LotMappings) == 0 {
+			continue
+		}
+		suggestion := make([]syncsvc.LotSuggestionEntry, 0, len(row.LotMappings))
+		for _, m := range row.LotMappings {
+			if m.LotName == "" {
+				continue
+			}
+			qty := m.QuantityPerPN
+			if qty < 1 {
+				qty = 1
+			}
+			suggestion = append(suggestion, syncsvc.LotSuggestionEntry{
+				LotName: m.LotName,
+				Qty:     qty,
+			})
+		}
+		if len(suggestion) == 0 {
+			continue
+		}
+		items = append(items, syncsvc.SeenPartnumber{
+			Partnumber:    row.VendorPartnumber,
+			Description:   row.Description,
+			LotSuggestion: suggestion,
+		})
+	}
+
+	if len(items) == 0 {
+		return
+	}
+
+	if err := h.syncService.PushPartnumberSeen(items); err != nil {
+		slog.Warn("vendor_spec: failed to push lot suggestions to server", "error", err)
+	}
+}
+
 func normalizeLotMappings(in []localdb.VendorSpecLotMapping) []localdb.VendorSpecLotMapping {
 	if len(in) == 0 {
 		return nil
@@ -121,7 +172,7 @@ func normalizeLotMappings(in []localdb.VendorSpecLotMapping) []localdb.VendorSpe
 	merged := make(map[string]int, len(in))
 	order := make([]string, 0, len(in))
 	for _, m := range in {
-		lot := strings.TrimSpace(m.LotName)
+		lot := models.NormalizeLotName(m.LotName)
 		if lot == "" {
 			continue
 		}

internal/localdb/components.go

@@ -2,11 +2,8 @@ package localdb
 
 import (
 	"fmt"
-	"log/slog"
 	"strings"
 	"time"
-
-	"gorm.io/gorm"
 )
 
 // ComponentFilter for searching with filters
@@ -24,344 +21,213 @@ type ComponentSyncResult struct {
 	Duration    time.Duration
 }
 
-// SyncComponents loads components from MariaDB (lot + qt_lot_metadata) into local_components
-func (l *LocalDB) SyncComponents(mariaDB *gorm.DB) (*ComponentSyncResult, error) {
-	startTime := time.Now()
-
-	// Build the component catalog from every runtime source of LOT names.
-	// Storage lots may exist in qt_lot_metadata / qt_pricelist_items before they appear in lot,
-	// so the sync cannot start from lot alone.
-	type componentRow struct {
-		LotName        string
-		LotDescription string
-		Category       *string
-		Model          *string
-	}
-
-	var rows []componentRow
-	err := mariaDB.Raw(`
-		SELECT
-			src.lot_name,
-			COALESCE(MAX(NULLIF(TRIM(l.lot_description), '')), '') AS lot_description,
-			COALESCE(
-				MAX(NULLIF(TRIM(c.code), '')),
-				MAX(NULLIF(TRIM(l.lot_category), '')),
-				SUBSTRING_INDEX(src.lot_name, '_', 1)
-			) AS category,
-			MAX(NULLIF(TRIM(m.model), '')) AS model
-		FROM (
-			SELECT lot_name FROM lot
-			UNION
-			SELECT lot_name FROM qt_lot_metadata
-			WHERE is_hidden = FALSE OR is_hidden IS NULL
-			UNION
-			SELECT lot_name FROM qt_pricelist_items
-		) src
-		LEFT JOIN lot l ON l.lot_name = src.lot_name
-		LEFT JOIN qt_lot_metadata m
-			ON m.lot_name = src.lot_name
-			AND (m.is_hidden = FALSE OR m.is_hidden IS NULL)
-		LEFT JOIN qt_categories c ON m.category_id = c.id
-		GROUP BY src.lot_name
-		ORDER BY src.lot_name
-	`).Scan(&rows).Error
+// latestActivePricelistID returns the local DB id of the most recently created
+// active pricelist for the given source ("estimate", "warehouse", etc.).
+func (l *LocalDB) latestActivePricelistID(source string) (uint, error) {
+	var id uint
+	err := l.db.Table("local_pricelists").
+		Select("id").
+		Where("is_active = ? AND source = ?", true, source).
+		Order("created_at DESC, id DESC").
+		Limit(1).
+		Scan(&id).Error
 	if err != nil {
-		return nil, fmt.Errorf("querying components from MariaDB: %w", err)
+		return 0, err
 	}
-
-	if len(rows) == 0 {
-		slog.Warn("no components found in MariaDB")
-		return &ComponentSyncResult{
-			Duration: time.Since(startTime),
-		}, nil
+	if id == 0 {
+		return 0, fmt.Errorf("no active %s pricelist", source)
 	}
-
-	// Get existing local components for comparison
-	existingMap := make(map[string]bool)
-	var existing []LocalComponent
-	if err := l.db.Find(&existing).Error; err != nil {
-		return nil, fmt.Errorf("reading existing local components: %w", err)
-	}
-	for _, c := range existing {
-		existingMap[c.LotName] = true
-	}
-
-	// Prepare components for batch insert/update.
-	// Source joins may duplicate the same lot_name, so collapse them before insert.
-	syncTime := time.Now()
-	components := make([]LocalComponent, 0, len(rows))
-	componentIndex := make(map[string]int, len(rows))
-	newCount := 0
-
-	for _, row := range rows {
-		lotName := strings.TrimSpace(row.LotName)
-		if lotName == "" {
-			continue
-		}
-
-		category := ""
-		if row.Category != nil {
-			category = strings.TrimSpace(*row.Category)
-		} else {
-			// Parse category from lot_name (e.g., "CPU_AMD_9654" -> "CPU")
-			parts := strings.SplitN(lotName, "_", 2)
-			if len(parts) >= 1 {
-				category = parts[0]
-			}
-		}
-
-		model := ""
-		if row.Model != nil {
-			model = strings.TrimSpace(*row.Model)
-		}
-
-		comp := LocalComponent{
-			LotName:        lotName,
-			LotDescription: strings.TrimSpace(row.LotDescription),
-			Category:       category,
-			Model:          model,
-		}
-
-		if idx, exists := componentIndex[lotName]; exists {
-			// Keep the first row, but fill any missing metadata from duplicates.
-			if components[idx].LotDescription == "" && comp.LotDescription != "" {
-				components[idx].LotDescription = comp.LotDescription
-			}
-			if components[idx].Category == "" && comp.Category != "" {
-				components[idx].Category = comp.Category
-			}
-			if components[idx].Model == "" && comp.Model != "" {
-				components[idx].Model = comp.Model
-			}
-			continue
-		}
-
-		componentIndex[lotName] = len(components)
-		components = append(components, comp)
-
-		if !existingMap[lotName] {
-			newCount++
-		}
-	}
-
-	// Use transaction for bulk upsert
-	err = l.db.Transaction(func(tx *gorm.DB) error {
-		// Delete all existing and insert new (simpler than upsert for SQLite)
-		if err := tx.Where("1=1").Delete(&LocalComponent{}).Error; err != nil {
-			return fmt.Errorf("clearing local components: %w", err)
-		}
-
-		// Batch insert
-		batchSize := 500
-		for i := 0; i < len(components); i += batchSize {
-			end := i + batchSize
-			if end > len(components) {
-				end = len(components)
-			}
-			if err := tx.CreateInBatches(components[i:end], batchSize).Error; err != nil {
-				return fmt.Errorf("inserting components batch: %w", err)
-			}
-		}
-
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	// Update last sync time
-	if err := l.SetComponentSyncTime(syncTime); err != nil {
-		slog.Warn("failed to update component sync time", "error", err)
-	}
-
-	result := &ComponentSyncResult{
-		TotalSynced: len(components),
-		NewCount:    newCount,
-		UpdateCount: len(components) - newCount,
-		Duration:    time.Since(startTime),
-	}
-
-	slog.Info("components synced",
-		"total", result.TotalSynced,
-		"new", result.NewCount,
-		"updated", result.UpdateCount,
-		"duration", result.Duration)
-
-	return result, nil
+	return id, nil
 }
 
-// SearchLocalComponents searches components in local cache by query string
-// Searches in lot_name, lot_description, category, and model fields
+// pricelistItemRow is used for scanning rows from local_pricelist_items.
+type pricelistItemRow struct {
+	LotName  string `gorm:"column:lot_name"`
+	Category string `gorm:"column:lot_category"`
+}
+
+func (r pricelistItemRow) toLocalComponent() LocalComponent {
+	return LocalComponent{
+		LotName:  r.LotName,
+		Category: r.Category,
+	}
+}
+
+
+// SearchLocalComponents searches components in the latest active estimate
+// pricelist by lot_name.
 func (l *LocalDB) SearchLocalComponents(query string, limit int) ([]LocalComponent, error) {
 	if limit <= 0 {
 		limit = 50
 	}
-
-	var components []LocalComponent
-
-	if query == "" {
-		// Return all components with limit
-		err := l.db.Order("lot_name").Limit(limit).Find(&components).Error
-		return components, err
-	}
-
-	// Search with LIKE on multiple fields
-	searchPattern := "%" + strings.ToLower(query) + "%"
-
-	err := l.db.Where(
-		"LOWER(lot_name) LIKE ? OR LOWER(lot_description) LIKE ? OR LOWER(category) LIKE ? OR LOWER(model) LIKE ?",
-		searchPattern, searchPattern, searchPattern, searchPattern,
-	).Order("lot_name").Limit(limit).Find(&components).Error
-
-	return components, err
-}
-
-// SearchLocalComponentsByCategory searches components by category and optional query
-func (l *LocalDB) SearchLocalComponentsByCategory(category string, query string, limit int) ([]LocalComponent, error) {
-	if limit <= 0 {
-		limit = 50
-	}
-
-	var components []LocalComponent
-	db := l.db.Where("LOWER(category) = ?", strings.ToLower(category))
-
-	if query != "" {
-		searchPattern := "%" + strings.ToLower(query) + "%"
-		db = db.Where(
-			"LOWER(lot_name) LIKE ? OR LOWER(lot_description) LIKE ? OR LOWER(model) LIKE ?",
-			searchPattern, searchPattern, searchPattern,
-		)
-	}
-
-	err := db.Order("lot_name").Limit(limit).Find(&components).Error
-	return components, err
-}
-
-// ListComponents returns components with filtering and pagination
-func (l *LocalDB) ListComponents(filter ComponentFilter, offset, limit int) ([]LocalComponent, int64, error) {
-	db := l.db
-
-	// Apply category filter
-	if filter.Category != "" {
-		db = db.Where("LOWER(category) = ?", strings.ToLower(filter.Category))
-	}
-
-	// Apply search filter
-	if filter.Search != "" {
-		searchPattern := "%" + strings.ToLower(filter.Search) + "%"
-		db = db.Where(
-			"LOWER(lot_name) LIKE ? OR LOWER(lot_description) LIKE ? OR LOWER(category) LIKE ? OR LOWER(model) LIKE ?",
-			searchPattern, searchPattern, searchPattern, searchPattern,
-		)
-	}
-
-	// Get total count
-	var total int64
-	if err := db.Model(&LocalComponent{}).Count(&total).Error; err != nil {
-		return nil, 0, err
-	}
-
-	// Apply pagination and get results
-	var components []LocalComponent
-	if err := db.Order("lot_name").Offset(offset).Limit(limit).Find(&components).Error; err != nil {
-		return nil, 0, err
-	}
-
-	return components, total, nil
-}
-
-// GetLocalComponent returns a single component by lot_name
-func (l *LocalDB) GetLocalComponent(lotName string) (*LocalComponent, error) {
-	var component LocalComponent
-	err := l.db.Where("lot_name = ?", lotName).First(&component).Error
+	pricelistID, err := l.latestActivePricelistID("estimate")
 	if err != nil {
 		return nil, err
 	}
-	return &component, nil
+
+	db := l.db.Table("local_pricelist_items").
+		Where("pricelist_id = ?", pricelistID)
+	if query != "" {
+		db = db.Where("LOWER(lot_name) LIKE ?", "%"+strings.ToLower(query)+"%")
+	}
+
+	var rows []pricelistItemRow
+	if err := db.Select("lot_name, lot_category").Order("lot_name").Limit(limit).Scan(&rows).Error; err != nil {
+		return nil, err
+	}
+	components := make([]LocalComponent, len(rows))
+	for i, r := range rows {
+		components[i] = r.toLocalComponent()
+	}
+	return components, nil
 }
 
-// GetLocalComponentCategoriesByLotNames returns category for each lot_name in the local component cache.
-// Missing lots are not included in the map; caller is responsible for strict validation.
+// SearchLocalComponentsByCategory searches components in the latest active
+// estimate pricelist filtered by category.
+func (l *LocalDB) SearchLocalComponentsByCategory(category, query string, limit int) ([]LocalComponent, error) {
+	if limit <= 0 {
+		limit = 50
+	}
+	pricelistID, err := l.latestActivePricelistID("estimate")
+	if err != nil {
+		return nil, err
+	}
+
+	db := l.db.Table("local_pricelist_items").
+		Where("pricelist_id = ? AND UPPER(lot_category) = ?", pricelistID, strings.ToUpper(category))
+	if query != "" {
+		db = db.Where("LOWER(lot_name) LIKE ?", "%"+strings.ToLower(query)+"%")
+	}
+
+	var rows []pricelistItemRow
+	if err := db.Select("lot_name, lot_category").Order("lot_name").Limit(limit).Scan(&rows).Error; err != nil {
+		return nil, err
+	}
+	components := make([]LocalComponent, len(rows))
+	for i, r := range rows {
+		components[i] = r.toLocalComponent()
+	}
+	return components, nil
+}
+
+// ListComponents returns components from the latest active estimate pricelist
+// with optional category/search filtering and pagination.
+func (l *LocalDB) ListComponents(filter ComponentFilter, offset, limit int) ([]LocalComponent, int64, error) {
+	pricelistID, err := l.latestActivePricelistID("estimate")
+	if err != nil {
+		return nil, 0, err
+	}
+
+	db := l.db.Table("local_pricelist_items").
+		Where("pricelist_id = ?", pricelistID)
+
+	if filter.Category != "" {
+		db = db.Where("UPPER(lot_category) = ?", strings.ToUpper(filter.Category))
+	}
+	if filter.Search != "" {
+		db = db.Where("LOWER(lot_name) LIKE ?", "%"+strings.ToLower(filter.Search)+"%")
+	}
+
+	var total int64
+	if err := db.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	var rows []pricelistItemRow
+	if err := db.Select("lot_name, lot_category").Order("lot_name").Offset(offset).Limit(limit).Scan(&rows).Error; err != nil {
+		return nil, 0, err
+	}
+	components := make([]LocalComponent, len(rows))
+	for i, r := range rows {
+		components[i] = r.toLocalComponent()
+	}
+	return components, total, nil
+}
+
+// GetLocalComponent returns a single component by lot_name from the latest
+// active estimate pricelist.
+func (l *LocalDB) GetLocalComponent(lotName string) (*LocalComponent, error) {
+	pricelistID, err := l.latestActivePricelistID("estimate")
+	if err != nil {
+		return nil, err
+	}
+
+	var row pricelistItemRow
+	if err := l.db.Table("local_pricelist_items").
+		Select("lot_name, lot_category").
+		Where("pricelist_id = ? AND UPPER(lot_name) = ?", pricelistID, strings.ToUpper(lotName)).
+		First(&row).Error; err != nil {
+		return nil, err
+	}
+	c := row.toLocalComponent()
+	return &c, nil
+}
+
+// GetLocalComponentCategoriesByLotNames returns category for each lot_name
+// from the latest active estimate pricelist.
 func (l *LocalDB) GetLocalComponentCategoriesByLotNames(lotNames []string) (map[string]string, error) {
 	result := make(map[string]string, len(lotNames))
 	if len(lotNames) == 0 {
 		return result, nil
 	}
-
-	type row struct {
-		LotName  string `gorm:"column:lot_name"`
-		Category string `gorm:"column:category"`
+	pricelistID, err := l.latestActivePricelistID("estimate")
+	if err != nil {
+		return result, nil
 	}
-	var rows []row
-	if err := l.db.Model(&LocalComponent{}).
-		Select("lot_name, category").
-		Where("lot_name IN ?", lotNames).
-		Find(&rows).Error; err != nil {
+
+	// Build uppercase → original mapping so result keys match what the caller passed.
+	upperToOrig := make(map[string]string, len(lotNames))
+	upper := make([]string, len(lotNames))
+	for i, n := range lotNames {
+		u := strings.ToUpper(n)
+		upper[i] = u
+		upperToOrig[u] = n
+	}
+	var rows []pricelistItemRow
+	if err := l.db.Table("local_pricelist_items").
+		Select("lot_name, lot_category").
+		Where("pricelist_id = ? AND UPPER(lot_name) IN ?", pricelistID, upper).
+		Scan(&rows).Error; err != nil {
 		return nil, err
 	}
 	for _, r := range rows {
-		result[r.LotName] = r.Category
+		orig := upperToOrig[strings.ToUpper(r.LotName)]
+		if orig == "" {
+			orig = r.LotName
+		}
+		result[orig] = r.Category
 	}
 	return result, nil
 }
 
-// GetLocalComponentCategories returns distinct categories from local components
+// GetLocalComponentCategories returns distinct categories from the latest
+// active estimate pricelist.
 func (l *LocalDB) GetLocalComponentCategories() ([]string, error) {
-	var categories []string
-	err := l.db.Model(&LocalComponent{}).
-		Distinct("category").
-		Where("category != ''").
-		Order("category").
-		Pluck("category", &categories).Error
-	return categories, err
-}
-
-// CountLocalComponents returns the total number of local components
-func (l *LocalDB) CountLocalComponents() int64 {
-	var count int64
-	l.db.Model(&LocalComponent{}).Count(&count)
-	return count
-}
-
-// CountLocalComponentsByCategory returns component count by category
-func (l *LocalDB) CountLocalComponentsByCategory(category string) int64 {
-	var count int64
-	l.db.Model(&LocalComponent{}).Where("LOWER(category) = ?", strings.ToLower(category)).Count(&count)
-	return count
-}
-
-// GetComponentSyncTime returns the last component sync timestamp
-func (l *LocalDB) GetComponentSyncTime() *time.Time {
-	var setting struct {
-		Value string
-	}
-	if err := l.db.Table("app_settings").
-		Where("key = ?", "last_component_sync").
-		First(&setting).Error; err != nil {
-		return nil
-	}
-
-	t, err := time.Parse(time.RFC3339, setting.Value)
+	pricelistID, err := l.latestActivePricelistID("estimate")
 	if err != nil {
-		return nil
+		return nil, err
 	}
-	return &t
+
+	var categories []string
+	if err := l.db.Table("local_pricelist_items").
+		Where("pricelist_id = ? AND lot_category != ''", pricelistID).
+		Distinct("lot_category").
+		Order("lot_category").
+		Pluck("lot_category", &categories).Error; err != nil {
+		return nil, err
+	}
+	return categories, nil
 }
 
-// SetComponentSyncTime sets the last component sync timestamp
-func (l *LocalDB) SetComponentSyncTime(t time.Time) error {
-	return l.db.Exec(`
-		INSERT INTO app_settings (key, value, updated_at)
-		VALUES (?, ?, ?)
-		ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = excluded.updated_at
-	`, "last_component_sync", t.Format(time.RFC3339), time.Now().Format(time.RFC3339)).Error
+// CountComponents returns the number of distinct lot names in the latest
+// active estimate pricelist (used to check if data is available).
+func (l *LocalDB) CountComponents() int64 {
+	pricelistID, err := l.latestActivePricelistID("estimate")
+	if err != nil {
+		return 0
+	}
+	var count int64
+	l.db.Table("local_pricelist_items").Where("pricelist_id = ?", pricelistID).Count(&count)
+	return count
 }
 
-// NeedComponentSync checks if component sync is needed (older than specified hours)
-func (l *LocalDB) NeedComponentSync(maxAgeHours int) bool {
-	syncTime := l.GetComponentSyncTime()
-	if syncTime == nil {
-		return true
-	}
-	return time.Since(*syncTime).Hours() > float64(maxAgeHours)
-}

internal/localdb/converters.go

@@ -11,7 +11,7 @@ func ConfigurationToLocal(cfg *models.Configuration) *LocalConfiguration {
 	items := make(LocalConfigItems, len(cfg.Items))
 	for i, item := range cfg.Items {
 		items[i] = LocalConfigItem{
-			LotName:   item.LotName,
+			LotName:   models.NormalizeLotName(item.LotName),
 			Quantity:  item.Quantity,
 			UnitPrice: item.UnitPrice,
 		}
@@ -271,7 +271,7 @@ func PricelistItemToLocal(item *models.PricelistItem, localPricelistID uint) *Lo
 	partnumbers = append(partnumbers, item.Partnumbers...)
 	return &LocalPricelistItem{
 		PricelistID:  localPricelistID,
-		LotName:      item.LotName,
+		LotName:      models.NormalizeLotName(item.LotName),
 		LotCategory:  item.LotCategory,
 		Price:        item.Price,
 		AvailableQty: item.AvailableQty,

internal/localdb/localdb.go

@@ -46,7 +46,6 @@ type LocalDB struct {
 var localReadOnlyCacheTables = []string{
 	"local_pricelist_items",
 	"local_pricelists",
-	"local_components",
 	"local_partnumber_book_items",
 	"local_partnumber_books",
 }
@@ -78,7 +77,6 @@ func ResetData(dbPath string) error {
 		"local_configuration_versions",
 		"local_pricelists",
 		"local_pricelist_items",
-		"local_components",
 		"local_sync_guard_state",
 		"pending_changes",
 		"app_settings",
@@ -224,12 +222,12 @@ func autoMigrateLocalSchema(db *gorm.DB) error {
 		&LocalConfigurationVersion{},
 		&LocalPricelist{},
 		&LocalPricelistItem{},
-		&LocalComponent{},
 		&AppSetting{},
 		&LocalSyncGuardState{},
 		&PendingChange{},
 		&LocalPartnumberBook{},
 		&SyncLogEntry{},
+		&LocalQtSetting{},
 	)
 }
 
@@ -691,6 +689,22 @@ func (l *LocalDB) GetProjectByUUID(uuid string) (*LocalProject, error) {
 	return &project, nil
 }
 
+func (l *LocalDB) GetProjectByCode(code string) (*LocalProject, error) {
+	var project LocalProject
+	if err := l.db.Where("LOWER(code) = LOWER(?) AND variant = ''", code).First(&project).Error; err != nil {
+		return nil, err
+	}
+	return &project, nil
+}
+
+func (l *LocalDB) GetProjectByCodeAndVariant(code, variant string) (*LocalProject, error) {
+	var project LocalProject
+	if err := l.db.Where("LOWER(code) = LOWER(?) AND LOWER(variant) = LOWER(?)", code, variant).First(&project).Error; err != nil {
+		return nil, err
+	}
+	return &project, nil
+}
+
 func (l *LocalDB) GetProjectByName(ownerUsername, name string) (*LocalProject, error) {
 	var project LocalProject
 	if err := l.db.Where("owner_username = ? AND name = ?", ownerUsername, name).First(&project).Error; err != nil {
@@ -1220,25 +1234,6 @@ func (l *LocalDB) GetLastComponentSyncError() string {
 	return strings.TrimSpace(value)
 }
 
-func (l *LocalDB) SetComponentSyncResult(status, errorText string, attemptedAt time.Time) error {
-	status = strings.TrimSpace(status)
-	errorText = strings.TrimSpace(errorText)
-	if status == "" {
-		status = "unknown"
-	}
-	return l.db.Transaction(func(tx *gorm.DB) error {
-		if err := l.upsertAppSetting(tx, "last_component_sync_status", status, attemptedAt); err != nil {
-			return err
-		}
-		if err := l.upsertAppSetting(tx, "last_component_sync_error", errorText, attemptedAt); err != nil {
-			return err
-		}
-		if err := l.upsertAppSetting(tx, "last_component_sync_attempt_at", attemptedAt.Format(time.RFC3339), attemptedAt); err != nil {
-			return err
-		}
-		return nil
-	})
-}
 
 // CountLocalPricelists returns the number of local pricelists
 func (l *LocalDB) CountLocalPricelists() int64 {
@@ -1254,11 +1249,10 @@ func (l *LocalDB) CountAllPricelistItems() int64 {
 	return count
 }
 
-// CountComponents returns the number of rows in local_components.
-func (l *LocalDB) CountComponents() int64 {
-	var count int64
-	l.db.Model(&LocalComponent{}).Count(&count)
-	return count
+
+// DBFilePath returns the path to the SQLite database file.
+func (l *LocalDB) DBFilePath() string {
+	return l.path
 }
 
 // DBFileSizeBytes returns the size of the SQLite database file in bytes.
@@ -1270,11 +1264,11 @@ func (l *LocalDB) DBFileSizeBytes() int64 {
 	return info.Size()
 }
 
-// GetLatestLocalPricelist returns the most recently synced pricelist
+// GetLatestLocalPricelist returns the most recently synced active estimate pricelist.
 func (l *LocalDB) GetLatestLocalPricelist() (*LocalPricelist, error) {
 	var pricelist LocalPricelist
 	if err := l.db.
-		Where("source = ?", "estimate").
+		Where("source = ? AND is_active = ?", "estimate", true).
 		Where("EXISTS (SELECT 1 FROM local_pricelist_items WHERE local_pricelist_items.pricelist_id = local_pricelists.id)").
 		Order("created_at DESC, id DESC").
 		First(&pricelist).Error; err != nil {
@@ -1283,11 +1277,11 @@ func (l *LocalDB) GetLatestLocalPricelist() (*LocalPricelist, error) {
 	return &pricelist, nil
 }
 
-// GetLatestLocalPricelistBySource returns the most recently synced pricelist for a source.
+// GetLatestLocalPricelistBySource returns the most recently synced active pricelist for a source.
 func (l *LocalDB) GetLatestLocalPricelistBySource(source string) (*LocalPricelist, error) {
 	var pricelist LocalPricelist
 	if err := l.db.
-		Where("source = ?", source).
+		Where("source = ? AND is_active = ?", source, true).
 		Where("EXISTS (SELECT 1 FROM local_pricelist_items WHERE local_pricelist_items.pricelist_id = local_pricelists.id)").
 		Order("created_at DESC, id DESC").
 		First(&pricelist).Error; err != nil {
@@ -1296,6 +1290,17 @@ func (l *LocalDB) GetLatestLocalPricelistBySource(source string) (*LocalPricelis
 	return &pricelist, nil
 }
 
+// DeactivateLocalPricelistsNotIn marks all local pricelists with is_active=true whose
+// server_id is not in activeServerIDs as inactive. Used after each pricelist sync to
+// mirror server-side deactivations locally.
+func (l *LocalDB) DeactivateLocalPricelistsNotIn(activeServerIDs []uint) error {
+	q := l.db.Model(&LocalPricelist{}).Where("is_active = ?", true)
+	if len(activeServerIDs) > 0 {
+		q = q.Where("server_id NOT IN ?", activeServerIDs)
+	}
+	return q.Update("is_active", false).Error
+}
+
 // GetLocalPricelistByServerID returns a local pricelist by its server ID
 func (l *LocalDB) GetLocalPricelistByServerID(serverID uint) (*LocalPricelist, error) {
 	var pricelist LocalPricelist
@@ -1363,6 +1368,30 @@ func (l *LocalDB) CountLocalPricelistItems(pricelistID uint) int64 {
 	return count
 }
 
+// GetLocalPricelistCoverageByCategory returns item count per lot_category and the total
+// for the given local pricelist ID. Only items with price > 0 are counted.
+func (l *LocalDB) GetLocalPricelistCoverageByCategory(pricelistID uint) (map[string]int64, int64, error) {
+	type row struct {
+		Category string `gorm:"column:lot_category"`
+		Count    int64  `gorm:"column:cnt"`
+	}
+	var rows []row
+	if err := l.db.Model(&LocalPricelistItem{}).
+		Select("COALESCE(NULLIF(TRIM(lot_category),''), '?') AS lot_category, COUNT(*) AS cnt").
+		Where("pricelist_id = ? AND price > 0", pricelistID).
+		Group("lot_category").
+		Scan(&rows).Error; err != nil {
+		return nil, 0, err
+	}
+	result := make(map[string]int64, len(rows))
+	var total int64
+	for _, r := range rows {
+		result[r.Category] = r.Count
+		total += r.Count
+	}
+	return result, total, nil
+}
+
 // CountLocalPricelistItemsWithEmptyCategory returns the number of items for a pricelist with missing lot_category.
 func (l *LocalDB) CountLocalPricelistItemsWithEmptyCategory(pricelistID uint) (int64, error) {
 	var count int64
@@ -1427,10 +1456,11 @@ func (l *LocalDB) GetLocalPricelistItems(pricelistID uint) ([]LocalPricelistItem
 	return items, nil
 }
 
-// GetLocalPriceForLot returns the price for a lot from a local pricelist
+// GetLocalPriceForLot returns the price for a lot from a local pricelist.
+// Matching is case-insensitive via UPPER(lot_name) to handle legacy mixed-case rows.
 func (l *LocalDB) GetLocalPriceForLot(pricelistID uint, lotName string) (float64, error) {
 	var item LocalPricelistItem
-	if err := l.db.Where("pricelist_id = ? AND lot_name = ?", pricelistID, lotName).
+	if err := l.db.Where("pricelist_id = ? AND UPPER(lot_name) = ?", pricelistID, strings.ToUpper(lotName)).
 		First(&item).Error; err != nil {
 		return 0, err
 	}
@@ -1438,26 +1468,32 @@ func (l *LocalDB) GetLocalPriceForLot(pricelistID uint, lotName string) (float64
 }
 
 // GetLocalPricesForLots returns prices for multiple lots from a local pricelist in a single query.
-// Uses the composite index (pricelist_id, lot_name). Missing lots are omitted from the result.
+// Missing lots are omitted from the result.
+// lotNames must already be normalized (uppercased); matching is done via UPPER(lot_name) to handle
+// legacy rows that were stored in mixed case before normalization was enforced at sync time.
+// Keys in the returned map are uppercased (matching the input lotNames).
 func (l *LocalDB) GetLocalPricesForLots(pricelistID uint, lotNames []string) (map[string]float64, error) {
 	result := make(map[string]float64, len(lotNames))
 	if len(lotNames) == 0 {
 		return result, nil
 	}
+
 	type row struct {
 		LotName string  `gorm:"column:lot_name"`
 		Price   float64 `gorm:"column:price"`
 	}
 	var rows []row
+	// Use UPPER(lot_name) so rows synced before normalization (mixed-case) are still matched.
 	if err := l.db.Model(&LocalPricelistItem{}).
 		Select("lot_name, price").
-		Where("pricelist_id = ? AND lot_name IN ?", pricelistID, lotNames).
+		Where("pricelist_id = ? AND UPPER(lot_name) IN ?", pricelistID, lotNames).
 		Find(&rows).Error; err != nil {
 		return nil, err
 	}
 	for _, r := range rows {
 		if r.Price > 0 {
-			result[r.LotName] = r.Price
+			// Key must be uppercase to match callers that normalise lot names before lookup.
+			result[strings.ToUpper(r.LotName)] = r.Price
 		}
 	}
 	return result, nil
@@ -1480,15 +1516,27 @@ func (l *LocalDB) GetLocalLotCategoriesByServerPricelistID(serverPricelistID uin
 		LotName     string `gorm:"column:lot_name"`
 		LotCategory string `gorm:"column:lot_category"`
 	}
+	// Build uppercase → original mapping so result keys match what the caller passed.
+	upperToOrig := make(map[string]string, len(lotNames))
+	upper := make([]string, len(lotNames))
+	for i, n := range lotNames {
+		u := strings.ToUpper(n)
+		upper[i] = u
+		upperToOrig[u] = n
+	}
 	var rows []row
 	if err := l.db.Model(&LocalPricelistItem{}).
 		Select("lot_name, lot_category").
-		Where("pricelist_id = ? AND lot_name IN ?", localPL.ID, lotNames).
+		Where("pricelist_id = ? AND UPPER(lot_name) IN ?", localPL.ID, upper).
 		Find(&rows).Error; err != nil {
 		return nil, err
 	}
 	for _, r := range rows {
-		result[r.LotName] = r.LotCategory
+		orig := upperToOrig[strings.ToUpper(r.LotName)]
+		if orig == "" {
+			orig = r.LotName
+		}
+		result[orig] = r.LotCategory
 	}
 	return result, nil
 }
@@ -1672,12 +1720,13 @@ func (l *LocalDB) RepairPendingChanges() (int, []string, error) {
 	var remainingErrors []string
 
 	for _, change := range erroredChanges {
+		var modified bool
 		var repairErr error
 		switch change.EntityType {
 		case "project":
-			repairErr = l.repairProjectChange(&change)
+			modified, repairErr = l.repairProjectChange(&change)
 		case "configuration":
-			repairErr = l.repairConfigurationChange(&change)
+			modified, repairErr = l.repairConfigurationChange(&change)
 		default:
 			repairErr = fmt.Errorf("unknown entity type: %s", change.EntityType)
 		}
@@ -1688,7 +1737,13 @@ func (l *LocalDB) RepairPendingChanges() (int, []string, error) {
 			continue
 		}
 
-		// Clear error and reset attempts
+		// Only reset attempts when the repair actually changed local data.
+		// If nothing was modified, the error is server-side; leaving attempts
+		// intact lets maxPendingChangeAttempts eventually abandon the change.
+		if !modified {
+			continue
+		}
+
 		if err := l.db.Model(&PendingChange{}).Where("id = ?", change.ID).Updates(map[string]interface{}{
 			"last_error": "",
 			"attempts":   0,
@@ -1704,12 +1759,13 @@ func (l *LocalDB) RepairPendingChanges() (int, []string, error) {
 }
 
 // repairProjectChange validates and fixes project data.
+// Returns (modified, err): modified=true only when local data was actually changed.
 // Note: This only validates local data. Server-side conflicts (like duplicate code+variant)
 // are handled by sync service layer with deduplication logic.
-func (l *LocalDB) repairProjectChange(change *PendingChange) error {
+func (l *LocalDB) repairProjectChange(change *PendingChange) (bool, error) {
 	project, err := l.GetProjectByUUID(change.EntityUUID)
 	if err != nil {
-		return fmt.Errorf("project not found locally: %w", err)
+		return false, fmt.Errorf("project not found locally: %w", err)
 	}
 
 	modified := false
@@ -1735,7 +1791,7 @@ func (l *LocalDB) repairProjectChange(change *PendingChange) error {
 	if strings.TrimSpace(project.OwnerUsername) == "" {
 		project.OwnerUsername = l.GetDBUser()
 		if project.OwnerUsername == "" {
-			return fmt.Errorf("cannot determine owner username")
+			return false, fmt.Errorf("cannot determine owner username")
 		}
 		modified = true
 	}
@@ -1756,18 +1812,19 @@ func (l *LocalDB) repairProjectChange(change *PendingChange) error {
 
 	if modified {
 		if err := l.SaveProject(project); err != nil {
-			return fmt.Errorf("saving repaired project: %w", err)
+			return false, fmt.Errorf("saving repaired project: %w", err)
 		}
 	}
 
-	return nil
+	return modified, nil
 }
 
-// repairConfigurationChange validates and fixes configuration data
-func (l *LocalDB) repairConfigurationChange(change *PendingChange) error {
+// repairConfigurationChange validates and fixes configuration data.
+// Returns (modified, err): modified=true only when local data was actually changed.
+func (l *LocalDB) repairConfigurationChange(change *PendingChange) (bool, error) {
 	config, err := l.GetConfigurationByUUID(change.EntityUUID)
 	if err != nil {
-		return fmt.Errorf("configuration not found locally: %w", err)
+		return false, fmt.Errorf("configuration not found locally: %w", err)
 	}
 
 	modified := false
@@ -1779,7 +1836,7 @@ func (l *LocalDB) repairConfigurationChange(change *PendingChange) error {
 			// Project doesn't exist locally - use default system project
 			systemProject, sysErr := l.EnsureDefaultProject(config.OriginalUsername)
 			if sysErr != nil {
-				return fmt.Errorf("getting system project: %w", sysErr)
+				return false, fmt.Errorf("getting system project: %w", sysErr)
 			}
 			config.ProjectUUID = &systemProject.UUID
 			modified = true
@@ -1788,11 +1845,11 @@ func (l *LocalDB) repairConfigurationChange(change *PendingChange) error {
 
 	if modified {
 		if err := l.SaveConfiguration(config); err != nil {
-			return fmt.Errorf("saving repaired configuration: %w", err)
+			return false, fmt.Errorf("saving repaired configuration: %w", err)
 		}
 	}
 
-	return nil
+	return modified, nil
 }
 
 // GetSyncGuardState returns the latest readiness guard state.
@@ -1854,28 +1911,6 @@ func (l *LocalDB) GetLocalPricelistItemsPage(pricelistID uint, search string, pa
 	return items, total, nil
 }
 
-// GetLocalComponentDescriptionsByLotNames returns a map of lot_name → lot_description for the given lots.
-func (l *LocalDB) GetLocalComponentDescriptionsByLotNames(lotNames []string) (map[string]string, error) {
-	if len(lotNames) == 0 {
-		return map[string]string{}, nil
-	}
-	type row struct {
-		LotName        string
-		LotDescription string
-	}
-	var rows []row
-	if err := l.db.Table("local_components").
-		Select("lot_name, lot_description").
-		Where("lot_name IN ?", lotNames).
-		Scan(&rows).Error; err != nil {
-		return nil, fmt.Errorf("fetch component descriptions: %w", err)
-	}
-	m := make(map[string]string, len(rows))
-	for _, r := range rows {
-		m[r.LotName] = r.LotDescription
-	}
-	return m, nil
-}
 
 // GetSchemaMigrations returns all applied local schema migrations ordered by applied_at.
 func (l *LocalDB) GetSchemaMigrations() ([]LocalSchemaMigration, error) {

internal/localdb/migrations.go

@@ -1120,3 +1120,4 @@ func deduplicatePricelistItemsAndAddUniqueIndex(tx *gorm.DB) error {
 	slog.Info("deduplicated local_pricelist_items and added unique index")
 	return nil
 }
+

internal/localdb/models.go

@@ -5,6 +5,8 @@ import (
 	"encoding/json"
 	"errors"
 	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/models"
 )
 
 // AppSetting stores application settings in local SQLite
@@ -46,7 +48,13 @@ func (c *LocalConfigItems) Scan(value interface{}) error {
 	default:
 		return errors.New("type assertion failed for LocalConfigItems")
 	}
-	return json.Unmarshal(bytes, c)
+	if err := json.Unmarshal(bytes, c); err != nil {
+		return err
+	}
+	for i := range *c {
+		(*c)[i].LotName = models.NormalizeLotName((*c)[i].LotName)
+	}
+	return nil
 }
 
 func (c LocalConfigItems) Total() float64 {
@@ -169,7 +177,8 @@ type LocalPricelist struct {
 	Name      string    `json:"name"`
 	CreatedAt time.Time `gorm:"index:idx_local_pricelists_source_created_at,priority:2,sort:desc" json:"created_at"`
 	SyncedAt  time.Time `json:"synced_at"`
-	IsUsed    bool      `gorm:"default:false" json:"is_used"` // Used by any local configuration
+	IsUsed    bool      `gorm:"default:false" json:"is_used"`   // Used by any local configuration
+	IsActive  bool      `gorm:"not null;default:true;index" json:"is_active"` // Mirrors qt_pricelists.is_active
 }
 
 func (LocalPricelist) TableName() string {
@@ -356,3 +365,12 @@ func (v *VendorSpec) Scan(value interface{}) error {
 	}
 	return json.Unmarshal(bytes, v)
 }
+
+// LocalQtSetting caches server-pushed settings from qt_settings (MariaDB) into local SQLite.
+// Synced during component sync. Each row is a JSON-valued setting identified by name.
+type LocalQtSetting struct {
+	Name  string `gorm:"primaryKey;size:100"`
+	Value string `gorm:"type:text"`
+}
+
+func (LocalQtSetting) TableName() string { return "local_qt_settings" }

internal/localdb/qt_settings.go

@@ -0,0 +1,126 @@
+package localdb
+
+import (
+	"encoding/json"
+	"fmt"
+	"log/slog"
+
+	"gorm.io/gorm"
+)
+
+// ConfigTypeDef describes one device configuration type as synced from qt_settings.
+type ConfigTypeDef struct {
+	Code         string   `json:"code"`
+	NameRu       string   `json:"name_ru"`
+	DisplayOrder int      `json:"display_order"`
+	Categories   []string `json:"categories"`
+}
+
+// TabSection is a named sub-group of categories within a configurator tab.
+type TabSection struct {
+	Title      string   `json:"title"`
+	Categories []string `json:"categories"`
+}
+
+// TabDef describes one tab in the configurator as synced from qt_settings.
+type TabDef struct {
+	Key          string       `json:"key"`
+	Label        string       `json:"label"`
+	SingleSelect bool         `json:"single_select"`
+	Categories   []string     `json:"categories"`
+	Sections     []TabSection `json:"sections,omitempty"`
+}
+
+// ConfiguratorSettings holds all four server-driven settings consumed by the configurator.
+// Fields are nil/empty when the corresponding qt_settings key is absent or unparseable;
+// callers are expected to apply hardcoded fallbacks in that case.
+type ConfiguratorSettings struct {
+	ConfigTypes        []ConfigTypeDef     `json:"config_types"`
+	TabConfig          []TabDef            `json:"tab_config"`
+	AlwaysVisibleTabs  []string            `json:"always_visible_tabs"`
+	RequiredCategories map[string][]string `json:"required_categories"`
+}
+
+// SyncQtSettings reads all rows from qt_settings on MariaDB and replaces the
+// local_qt_settings cache in a single SQLite transaction.
+// If the read fails (no connection, table missing on old server) or the server
+// returns an empty table, the existing local_qt_settings are preserved so the
+// configurator keeps working offline or against old server versions.
+func (l *LocalDB) SyncQtSettings(mariaDB *gorm.DB) error {
+	var rows []LocalQtSetting
+	if err := mariaDB.
+		Table("qt_settings").
+		Select("name, value").
+		Find(&rows).Error; err != nil {
+		slog.Warn("qt_settings: read from MariaDB failed, keeping existing local cache", "error", err)
+		return fmt.Errorf("reading qt_settings from MariaDB: %w", err)
+	}
+
+	if len(rows) == 0 {
+		slog.Warn("qt_settings: server returned empty table, keeping existing local cache")
+		return nil
+	}
+
+	return l.db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Exec("DELETE FROM local_qt_settings").Error; err != nil {
+			return fmt.Errorf("clearing local_qt_settings: %w", err)
+		}
+		if err := tx.Create(&rows).Error; err != nil {
+			return fmt.Errorf("inserting local_qt_settings: %w", err)
+		}
+		slog.Info("qt_settings synced", "count", len(rows))
+		return nil
+	})
+}
+
+// GetQtSetting returns the raw JSON value for a named setting.
+// found is false when the key does not exist.
+func (l *LocalDB) GetQtSetting(name string) (value string, found bool, err error) {
+	var row LocalQtSetting
+	res := l.db.Where("name = ?", name).First(&row)
+	if res.Error != nil {
+		if res.Error == gorm.ErrRecordNotFound {
+			return "", false, nil
+		}
+		return "", false, res.Error
+	}
+	return row.Value, true, nil
+}
+
+// GetConfiguratorSettings reads all four known settings from local_qt_settings and
+// parses them. Any missing or unparseable key is left as nil/zero in the result;
+// the caller must apply fallbacks.
+func (l *LocalDB) GetConfiguratorSettings() (*ConfiguratorSettings, error) {
+	out := &ConfiguratorSettings{}
+
+	keys := []string{"config_types", "tab_config", "always_visible_tabs", "required_categories"}
+	for _, key := range keys {
+		raw, found, err := l.GetQtSetting(key)
+		if err != nil {
+			return out, fmt.Errorf("reading setting %q: %w", key, err)
+		}
+		if !found || raw == "" {
+			continue
+		}
+		switch key {
+		case "config_types":
+			if err := json.Unmarshal([]byte(raw), &out.ConfigTypes); err != nil {
+				slog.Warn("failed to parse config_types setting", "error", err)
+			}
+		case "tab_config":
+			if err := json.Unmarshal([]byte(raw), &out.TabConfig); err != nil {
+				slog.Warn("failed to parse tab_config setting", "error", err)
+			}
+		case "always_visible_tabs":
+			if err := json.Unmarshal([]byte(raw), &out.AlwaysVisibleTabs); err != nil {
+				slog.Warn("failed to parse always_visible_tabs setting", "error", err)
+			}
+		case "required_categories":
+			if err := json.Unmarshal([]byte(raw), &out.RequiredCategories); err != nil {
+				slog.Warn("failed to parse required_categories setting", "error", err)
+			}
+		}
+	}
+
+	return out, nil
+}

internal/models/lot.go

@@ -1,5 +1,13 @@
 package models
 
+import "strings"
+
+// NormalizeLotName returns the canonical form of a lot name: trimmed and uppercased.
+// Apply at every point where a lot name enters the system (sync, API input, config load).
+func NormalizeLotName(s string) string {
+	return strings.ToUpper(strings.TrimSpace(s))
+}
+
 // Lot represents existing lot table
 type Lot struct {
 	LotName        string  `gorm:"column:lot_name;primaryKey;size:255" json:"lot_name"`

internal/models/qt_setting.go

@@ -0,0 +1,10 @@
+package models
+
+// QtSetting is the MariaDB-side model for qt_settings.
+// The table is managed by the server-side agent; QF only reads from it.
+type QtSetting struct {
+	Name  string `gorm:"primaryKey;size:100" json:"name"`
+	Value string `gorm:"type:text" json:"value"`
+}
+
+func (QtSetting) TableName() string { return "qt_settings" }

internal/repository/partnumber_book.go

@@ -157,7 +157,7 @@ func (r *PartnumberBookRepository) listCatalogItems(partnumbers localdb.LocalStr
 	query := r.db.Model(&localdb.LocalPartnumberBookItem{}).Where("partnumber IN ?", []string(partnumbers))
 	if search != "" {
 		trimmedSearch := "%" + search + "%"
-		query = query.Where("partnumber LIKE ? OR lots_json LIKE ? OR description LIKE ?", trimmedSearch, trimmedSearch, trimmedSearch)
+		query = query.Where("partnumber LIKE ? OR CAST(lots_json AS TEXT) LIKE ? OR description LIKE ?", trimmedSearch, trimmedSearch, trimmedSearch)
 	}
 
 	var total int64

internal/repository/pricelist.go

@@ -269,12 +269,21 @@ func (r *PricelistRepository) GetPriceForLot(pricelistID uint, lotName string) (
 }
 
 // GetPricesForLots returns price map for given lots within a pricelist.
+// Keys in the returned map match the requested lot names (case-preserving) so that
+// callers using Go map lookups are not confused by case differences between the
+// requested name and the stored value (e.g. pricelist renamed lots to UPPERCASE).
 func (r *PricelistRepository) GetPricesForLots(pricelistID uint, lotNames []string) (map[string]float64, error) {
 	result := make(map[string]float64, len(lotNames))
 	if pricelistID == 0 || len(lotNames) == 0 {
 		return result, nil
 	}
 
+	// Build case-insensitive index: lowercase → original requested name.
+	lotIndex := make(map[string]string, len(lotNames))
+	for _, n := range lotNames {
+		lotIndex[strings.ToLower(n)] = n
+	}
+
 	var rows []models.PricelistItem
 	if err := r.db.Select("lot_name, price").
 		Where("pricelist_id = ? AND lot_name IN ?", pricelistID, lotNames).
@@ -284,7 +293,11 @@ func (r *PricelistRepository) GetPricesForLots(pricelistID uint, lotNames []stri
 
 	for _, row := range rows {
 		if row.Price > 0 {
-			result[row.LotName] = row.Price
+			key := row.LotName
+			if requested, ok := lotIndex[strings.ToLower(row.LotName)]; ok {
+				key = requested
+			}
+			result[key] = row.Price
 		}
 	}
 	return result, nil

internal/repository/project.go

@@ -23,6 +23,11 @@ func (r *ProjectRepository) Update(project *models.Project) error {
 }
 
 func (r *ProjectRepository) UpsertByUUID(project *models.Project) error {
+	// Clear the client-side primary key so the upsert is driven purely by the
+	// uuid unique constraint. Passing a non-zero ID can trigger ON DUPLICATE KEY
+	// on the primary key of an unrelated row, leaving uuid unchanged and causing
+	// the follow-up SELECT to return ErrRecordNotFound.
+	project.ID = 0
 	if err := r.db.Clauses(clause.OnConflict{
 		Columns: []clause.Column{{Name: "uuid"}},
 		DoUpdates: clause.AssignmentColumns([]string{

internal/services/export.go

@@ -53,13 +53,14 @@ type ProjectExportData struct {
 }
 
 type ProjectPricingExportOptions struct {
-	IncludeLOT        bool    `json:"include_lot"`
-	IncludeBOM        bool    `json:"include_bom"`
-	IncludeEstimate   bool    `json:"include_estimate"`
-	IncludeStock      bool    `json:"include_stock"`
-	IncludeCompetitor bool    `json:"include_competitor"`
-	Basis             string  `json:"basis"`       // "fob" or "ddp"; empty defaults to "fob"
-	SaleMarkup        float64 `json:"sale_markup"` // DDP multiplier; 0 defaults to 1.3
+	IncludeLOT        bool     `json:"include_lot"`
+	IncludeBOM        bool     `json:"include_bom"`
+	IncludeEstimate   bool     `json:"include_estimate"`
+	IncludeStock      bool     `json:"include_stock"`
+	IncludeCompetitor bool     `json:"include_competitor"`
+	Basis             string   `json:"basis"`         // "fob" or "ddp"; empty defaults to "fob"
+	SaleMarkup        float64  `json:"sale_markup"`   // DDP multiplier; 0 defaults to 1.3
+	ManualPrice       *float64 `json:"manual_price"`  // user-defined total price; distributed proportionally across rows
 }
 
 func (o ProjectPricingExportOptions) saleMarkupFactor() float64 {
@@ -87,14 +88,15 @@ type ProjectPricingExportConfig struct {
 }
 
 type ProjectPricingExportRow struct {
-	LotDisplay  string
-	VendorPN    string
-	Description string
-	Quantity    int
-	BOMTotal    *float64
-	Estimate    *float64
-	Stock       *float64
-	Competitor  *float64
+	LotDisplay   string
+	VendorPN     string
+	Description  string
+	Quantity     int
+	BOMTotal     *float64
+	Estimate     *float64
+	Stock        *float64
+	Competitor   *float64
+	ManualPrice  *float64 // proportional share of the user-defined total price
 }
 
 // ToCSV writes project export data in the new structured CSV format.
@@ -388,17 +390,37 @@ func (s *ExportService) buildPricingExportBlock(cfg *models.Configuration, opts
 				description = componentDescriptions[rowMappings[0].LotName]
 			}
 
-			pricingRow := ProjectPricingExportRow{
-				LotDisplay:  formatLotDisplay(rowMappings),
-				VendorPN:    row.VendorPartnumber,
-				Description: description,
-				Quantity:    exportPositiveInt(row.Quantity, 1),
-				BOMTotal:    vendorRowTotal(row),
-				Estimate:    computeMappingTotal(priceMap, rowMappings, row.Quantity, func(p pricingLevels) *float64 { return p.Estimate }),
-				Stock:       computeMappingTotal(priceMap, rowMappings, row.Quantity, func(p pricingLevels) *float64 { return p.Stock }),
-				Competitor:  computeMappingTotal(priceMap, rowMappings, row.Quantity, func(p pricingLevels) *float64 { return p.Competitor }),
+			if len(rowMappings) == 0 {
+				block.Rows = append(block.Rows, ProjectPricingExportRow{
+					LotDisplay:  "н/д",
+					VendorPN:    row.VendorPartnumber,
+					Description: description,
+					Quantity:    exportPositiveInt(row.Quantity, 1),
+					BOMTotal:    vendorRowTotal(row),
+				})
+				continue
+			}
+
+			// One export row per LOT mapping so that bundles (1 PN → N LOTs) appear
+			// as separate lines, matching the frontend pricing table layout.
+			pnQty := exportPositiveInt(row.Quantity, 1)
+			for i, mapping := range rowMappings {
+				lotQty := pnQty * mapping.QuantityPerPN
+				var bomTotal *float64
+				if i == 0 {
+					bomTotal = vendorRowTotal(row)
+				}
+				block.Rows = append(block.Rows, ProjectPricingExportRow{
+					LotDisplay:  mapping.LotName,
+					VendorPN:    row.VendorPartnumber,
+					Description: description,
+					Quantity:    lotQty,
+					BOMTotal:    bomTotal,
+					Estimate:    computeSingleLotTotal(priceMap, mapping.LotName, lotQty, func(p pricingLevels) *float64 { return p.Estimate }),
+					Stock:       computeSingleLotTotal(priceMap, mapping.LotName, lotQty, func(p pricingLevels) *float64 { return p.Stock }),
+					Competitor:  computeSingleLotTotal(priceMap, mapping.LotName, lotQty, func(p pricingLevels) *float64 { return p.Competitor }),
+				})
 			}
-			block.Rows = append(block.Rows, pricingRow)
 		}
 
 		for _, item := range cfg.Items {
@@ -422,10 +444,22 @@ func (s *ExportService) buildPricingExportBlock(cfg *models.Configuration, opts
 		if opts.isDDP() {
 			applyDDPMarkup(block.Rows, opts.saleMarkupFactor())
 		}
+		if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+			distributeManualPrice(block.Rows, *opts.ManualPrice)
+		}
 		return block, nil
 	}
 
+	catOrder := defaultCategoryOrder()
+	lotNames := make([]string, 0, len(cfg.Items))
 	for _, item := range cfg.Items {
+		if item.LotName != "" {
+			lotNames = append(lotNames, item.LotName)
+		}
+	}
+	itemCategories := s.resolveCategories(cfg.PricelistID, lotNames)
+	sortedItems := sortConfigItemsByCategoryMap(cfg.Items, catOrder, itemCategories)
+	for _, item := range sortedItems {
 		if item.LotName == "" {
 			continue
 		}
@@ -444,10 +478,29 @@ func (s *ExportService) buildPricingExportBlock(cfg *models.Configuration, opts
 	if opts.isDDP() {
 		applyDDPMarkup(block.Rows, opts.saleMarkupFactor())
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		distributeManualPrice(block.Rows, *opts.ManualPrice)
+	}
 
 	return block, nil
 }
 
+// sortConfigItemsByCategoryMap returns a copy of items sorted by category display order.
+// categories maps lot_name → category code; catOrder maps category code → display order.
+func sortConfigItemsByCategoryMap(items models.ConfigItems, catOrder map[string]int, categories map[string]string) models.ConfigItems {
+	sorted := make(models.ConfigItems, len(items))
+	copy(sorted, items)
+	sort.SliceStable(sorted, func(i, j int) bool {
+		orderI, hasI := categoryDisplayOrder(catOrder, categories[sorted[i].LotName])
+		orderJ, hasJ := categoryDisplayOrder(catOrder, categories[sorted[j].LotName])
+		if hasI && hasJ {
+			return orderI < orderJ
+		}
+		return hasI && !hasJ
+	})
+	return sorted
+}
+
 func applyDDPMarkup(rows []ProjectPricingExportRow, factor float64) {
 	for i := range rows {
 		rows[i].Estimate = scaleFloatPtr(rows[i].Estimate, factor)
@@ -603,16 +656,8 @@ func (s *ExportService) batchLookupPrices(serverPricelistID *uint, lots []string
 	return prices
 }
 
-func (s *ExportService) resolveLotDescriptions(cfg *models.Configuration, localCfg *localdb.LocalConfiguration) map[string]string {
-	lots := collectPricingLots(cfg, localCfg, true)
-	if s.localDB == nil || len(lots) == 0 {
-		return map[string]string{}
-	}
-	descriptions, err := s.localDB.GetLocalComponentDescriptionsByLotNames(lots)
-	if err != nil {
-		return map[string]string{}
-	}
-	return descriptions
+func (s *ExportService) resolveLotDescriptions(_ *models.Configuration, _ *localdb.LocalConfiguration) map[string]string {
+	return map[string]string{}
 }
 
 func collectPricingLots(cfg *models.Configuration, localCfg *localdb.LocalConfiguration, includeBOM bool) []string {
@@ -696,6 +741,52 @@ func computeMappingTotal(priceMap map[string]pricingLevels, mappings []localdb.V
 	return floatPtr(total)
 }
 
+// distributeManualPrice sets ManualPrice on each row proportionally based on the
+// row's Estimate share. The last row with a price absorbs rounding remainder so
+// the sum of ManualPrice values always equals manualPrice exactly.
+func distributeManualPrice(rows []ProjectPricingExportRow, manualPrice float64) {
+	if manualPrice <= 0 || len(rows) == 0 {
+		return
+	}
+	totalEstimate := 0.0
+	for _, row := range rows {
+		if row.Estimate != nil && *row.Estimate > 0 {
+			totalEstimate += *row.Estimate
+		}
+	}
+	if totalEstimate <= 0 {
+		return
+	}
+	lastIdx := -1
+	for i, row := range rows {
+		if row.Estimate != nil && *row.Estimate > 0 {
+			lastIdx = i
+		}
+	}
+	assigned := 0.0
+	for i, row := range rows {
+		if row.Estimate == nil || *row.Estimate <= 0 {
+			continue
+		}
+		var share float64
+		if i == lastIdx {
+			share = math.Round((manualPrice-assigned)*100) / 100
+		} else {
+			share = math.Round((*row.Estimate/totalEstimate)*manualPrice*100) / 100
+			assigned += share
+		}
+		rows[i].ManualPrice = floatPtr(share)
+	}
+}
+
+func computeSingleLotTotal(priceMap map[string]pricingLevels, lotName string, qty int, selector func(pricingLevels) *float64) *float64 {
+	price := selector(priceMap[lotName])
+	if price == nil || *price <= 0 {
+		return nil
+	}
+	return floatPtr(*price * float64(qty))
+}
+
 func totalForUnitPrice(unitPrice *float64, quantity int) *float64 {
 	if unitPrice == nil || *unitPrice <= 0 {
 		return nil
@@ -716,7 +807,7 @@ func estimateOnlyTotal(estimatePrice *float64, fallbackUnitPrice float64, quanti
 }
 
 func pricingCSVHeaders(opts ProjectPricingExportOptions) []string {
-	headers := make([]string, 0, 8)
+	headers := make([]string, 0, 9)
 	headers = append(headers, "Line Item")
 	if opts.IncludeLOT {
 		headers = append(headers, "LOT")
@@ -734,11 +825,14 @@ func pricingCSVHeaders(opts ProjectPricingExportOptions) []string {
 	if opts.IncludeCompetitor {
 		headers = append(headers, "Конкуренты")
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		headers = append(headers, "Ручная цена")
+	}
 	return headers
 }
 
 func pricingCSVRow(row ProjectPricingExportRow, opts ProjectPricingExportOptions) []string {
-	record := make([]string, 0, 8)
+	record := make([]string, 0, 9)
 	record = append(record, "")
 	if opts.IncludeLOT {
 		record = append(record, emptyDash(row.LotDisplay))
@@ -760,11 +854,14 @@ func pricingCSVRow(row ProjectPricingExportRow, opts ProjectPricingExportOptions
 	if opts.IncludeCompetitor {
 		record = append(record, formatMoneyValue(row.Competitor))
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		record = append(record, formatMoneyValue(row.ManualPrice))
+	}
 	return record
 }
 
 func pricingConfigSummaryRow(cfg ProjectPricingExportConfig, opts ProjectPricingExportOptions) []string {
-	record := make([]string, 0, 8)
+	record := make([]string, 0, 9)
 	record = append(record, fmt.Sprintf("%d", cfg.Line))
 	if opts.IncludeLOT {
 		record = append(record, "")
@@ -786,19 +883,12 @@ func pricingConfigSummaryRow(cfg ProjectPricingExportConfig, opts ProjectPricing
 	if opts.IncludeCompetitor {
 		record = append(record, formatMoneyValue(sumPricingColumn(cfg.Rows, func(row ProjectPricingExportRow) *float64 { return row.Competitor })))
 	}
+	if opts.ManualPrice != nil && *opts.ManualPrice > 0 {
+		record = append(record, formatMoneyValue(opts.ManualPrice))
+	}
 	return record
 }
 
-func formatLotDisplay(mappings []localdb.VendorSpecLotMapping) string {
-	switch len(mappings) {
-	case 0:
-		return "н/д"
-	case 1:
-		return mappings[0].LotName
-	default:
-		return fmt.Sprintf("%s +%d", mappings[0].LotName, len(mappings)-1)
-	}
-}
 
 func formatMoneyValue(value *float64) string {
 	if value == nil {

internal/services/local_configuration.go

@@ -423,6 +423,13 @@ func (s *LocalConfigurationService) RefreshPrices(uuid string, ownerUsername str
 		}
 	}
 
+	// Capture fingerprint of the current state before any mutations.
+	preRefreshFP, err := localdb.BuildConfigurationSpecPriceFingerprint(localCfg)
+	if err != nil {
+		return nil, fmt.Errorf("build pre-refresh fingerprint: %w", err)
+	}
+	preRefreshCfg := *localCfg
+
 	// Update prices for all items from pricelist
 	updatedItems := make(localdb.LocalConfigItems, len(localCfg.Items))
 	for i, item := range localCfg.Items {
@@ -462,6 +469,18 @@ func (s *LocalConfigurationService) RefreshPrices(uuid string, ownerUsername str
 	localCfg.UpdatedAt = now
 	localCfg.SyncStatus = "pending"
 
+	// Before saving the new prices, snapshot the pre-refresh state so the revision
+	// history shows a clear before/after for every price update.
+	postRefreshFP, err := localdb.BuildConfigurationSpecPriceFingerprint(localCfg)
+	if err != nil {
+		return nil, fmt.Errorf("build post-refresh fingerprint: %w", err)
+	}
+	if preRefreshFP != postRefreshFP {
+		if err := s.snapshotPreRefreshTx(&preRefreshCfg, ownerUsername); err != nil {
+			return nil, fmt.Errorf("snapshot pre-refresh state: %w", err)
+		}
+	}
+
 	cfg, err := s.saveWithVersionAndPending(localCfg, "update", ownerUsername)
 	if err != nil {
 		return nil, fmt.Errorf("refresh prices with version: %w", err)
@@ -820,6 +839,13 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string, pricelistSe
 		}
 	}
 
+	// Capture fingerprint of the current state before any mutations.
+	preRefreshFP, err := localdb.BuildConfigurationSpecPriceFingerprint(localCfg)
+	if err != nil {
+		return nil, fmt.Errorf("build pre-refresh fingerprint: %w", err)
+	}
+	preRefreshCfg := *localCfg
+
 	// Update prices for all items from pricelist
 	updatedItems := make(localdb.LocalConfigItems, len(localCfg.Items))
 	for i, item := range localCfg.Items {
@@ -859,6 +885,18 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string, pricelistSe
 	localCfg.UpdatedAt = now
 	localCfg.SyncStatus = "pending"
 
+	// Before saving the new prices, snapshot the pre-refresh state so the revision
+	// history shows a clear before/after for every price update.
+	postRefreshFP, err := localdb.BuildConfigurationSpecPriceFingerprint(localCfg)
+	if err != nil {
+		return nil, fmt.Errorf("build post-refresh fingerprint: %w", err)
+	}
+	if preRefreshFP != postRefreshFP {
+		if err := s.snapshotPreRefreshTx(&preRefreshCfg, ""); err != nil {
+			return nil, fmt.Errorf("snapshot pre-refresh state: %w", err)
+		}
+	}
+
 	cfg, err := s.saveWithVersionAndPending(localCfg, "update", "")
 	if err != nil {
 		return nil, fmt.Errorf("refresh prices without auth with version: %w", err)
@@ -866,6 +904,16 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string, pricelistSe
 	return cfg, nil
 }
 
+// SnapshotCurrentState creates a revision of the current configuration state without modifying it.
+// Called before a client-side price refresh so the revision history has a clear before/after.
+func (s *LocalConfigurationService) SnapshotCurrentState(uuid string) error {
+	localCfg, err := s.localDB.GetConfigurationByUUID(uuid)
+	if err != nil {
+		return ErrConfigNotFound
+	}
+	return s.snapshotPreRefreshTx(localCfg, "")
+}
+
 // UpdateServerCount updates server count and recalculates total price without creating a new version.
 func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverCount int) (*models.Configuration, error) {
 	if serverCount < 1 {
@@ -1432,12 +1480,25 @@ func (s *LocalConfigurationService) appendVersionTx(
 	localCfg *localdb.LocalConfiguration,
 	operation string,
 	createdBy string,
+) (*localdb.LocalConfigurationVersion, error) {
+	return s.appendVersionTxNote(tx, localCfg, operation, createdBy, "")
+}
+
+func (s *LocalConfigurationService) appendVersionTxNote(
+	tx *gorm.DB,
+	localCfg *localdb.LocalConfiguration,
+	operation string,
+	createdBy string,
+	noteOverride string,
 ) (*localdb.LocalConfigurationVersion, error) {
 	snapshot, err := s.buildConfigurationSnapshot(localCfg)
 	if err != nil {
 		return nil, fmt.Errorf("build snapshot: %w", err)
 	}
 	changeNote := fmt.Sprintf("%s via local-first flow", operation)
+	if noteOverride != "" {
+		changeNote = noteOverride
+	}
 
 	var createdByPtr *string
 	if createdBy != "" {
@@ -1478,6 +1539,35 @@ func (s *LocalConfigurationService) appendVersionTx(
 	return nil, fmt.Errorf("%w: exceeded retries for %s", ErrVersionConflict, localCfg.UUID)
 }
 
+// snapshotPreRefreshTx creates a revision of the current configuration state before a price
+// refresh so the history clearly shows what existed before prices were updated.
+// Called only when prices are about to change (fingerprints differ).
+func (s *LocalConfigurationService) snapshotPreRefreshTx(localCfg *localdb.LocalConfiguration, createdBy string) error {
+	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		var locked localdb.LocalConfiguration
+		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).
+			Where("uuid = ?", localCfg.UUID).
+			First(&locked).Error; err != nil {
+			if errors.Is(err, gorm.ErrRecordNotFound) {
+				return ErrConfigNotFound
+			}
+			return fmt.Errorf("lock row for pre-refresh snapshot: %w", err)
+		}
+
+		version, err := s.appendVersionTxNote(tx, localCfg, "update", createdBy, "до обновления цен")
+		if err != nil {
+			return fmt.Errorf("append pre-refresh version: %w", err)
+		}
+
+		if err := tx.Model(&localdb.LocalConfiguration{}).
+			Where("uuid = ?", localCfg.UUID).
+			Update("current_version_id", version.ID).Error; err != nil {
+			return fmt.Errorf("set current_version_id for pre-refresh snapshot: %w", err)
+		}
+		return nil
+	})
+}
+
 func (s *LocalConfigurationService) buildConfigurationSnapshot(localCfg *localdb.LocalConfiguration) (string, error) {
 	return localdb.BuildConfigurationSnapshot(localCfg)
 }

internal/services/project.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"net/url"
+	"regexp"
 	"strings"
 	"time"
 
@@ -16,14 +17,19 @@ import (
 )
 
 var (
-	ErrProjectNotFound         = errors.New("project not found")
-	ErrProjectForbidden        = errors.New("access to project forbidden")
-	ErrProjectCodeExists       = errors.New("project code and variant already exist")
-	ErrCannotDeleteMainVariant = errors.New("cannot delete main variant")
-	ErrReservedMainVariant     = errors.New("variant name 'main' is reserved")
-	ErrCannotRenameMainVariant = errors.New("cannot rename main variant")
+	ErrProjectNotFound            = errors.New("project not found")
+	ErrProjectForbidden           = errors.New("access to project forbidden")
+	ErrProjectCodeExists          = errors.New("project code and variant already exist")
+	ErrCannotDeleteMainVariant    = errors.New("cannot delete main variant")
+	ErrReservedMainVariant        = errors.New("variant name 'main' is reserved")
+	ErrCannotRenameMainVariant    = errors.New("cannot rename main variant")
+	ErrProjectCodeInvalidChars    = errors.New("код опти содержит недопустимые символы (разрешены: буквы, цифры, дефис, точка, подчёркивание)")
+	ErrProjectVariantInvalidChars = errors.New("имя варианта содержит недопустимые символы (разрешены: буквы, цифры, дефис, точка, подчёркивание)")
 )
 
+// projectCodeRe allows only URL-path-safe characters so project codes can appear directly in URLs.
+var projectCodeRe = regexp.MustCompile(`^[A-Za-z0-9._-]+$`)
+
 type ProjectService struct {
 	localDB *localdb.LocalDB
 }
@@ -64,6 +70,9 @@ func (s *ProjectService) Create(ownerUsername string, req *CreateProjectRequest)
 	if code == "" {
 		return nil, fmt.Errorf("project code is required")
 	}
+	if !projectCodeRe.MatchString(code) {
+		return nil, ErrProjectCodeInvalidChars
+	}
 	variant := strings.TrimSpace(req.Variant)
 	if err := validateProjectVariantName(variant); err != nil {
 		return nil, err
@@ -106,6 +115,9 @@ func (s *ProjectService) Update(projectUUID, ownerUsername string, req *UpdatePr
 		if code == "" {
 			return nil, fmt.Errorf("project code is required")
 		}
+		if !projectCodeRe.MatchString(code) {
+			return nil, ErrProjectCodeInvalidChars
+		}
 		localProject.Code = code
 	}
 	if req.Variant != nil {
@@ -183,6 +195,9 @@ func validateProjectVariantName(variant string) error {
 	if normalizeProjectVariant(variant) == "main" {
 		return ErrReservedMainVariant
 	}
+	if variant != "" && !projectCodeRe.MatchString(variant) {
+		return ErrProjectVariantInvalidChars
+	}
 	return nil
 }
 
@@ -282,6 +297,24 @@ func (s *ProjectService) GetByUUID(projectUUID, ownerUsername string) (*models.P
 	return localdb.LocalToProject(localProject), nil
 }
 
+// GetByCode finds the main variant of a project by its code (case-insensitive).
+func (s *ProjectService) GetByCode(code string) (*models.Project, error) {
+	localProject, err := s.localDB.GetProjectByCode(code)
+	if err != nil {
+		return nil, ErrProjectNotFound
+	}
+	return localdb.LocalToProject(localProject), nil
+}
+
+// GetByCodeAndVariant finds a project by code + variant (both case-insensitive).
+func (s *ProjectService) GetByCodeAndVariant(code, variant string) (*models.Project, error) {
+	localProject, err := s.localDB.GetProjectByCodeAndVariant(code, variant)
+	if err != nil {
+		return nil, ErrProjectNotFound
+	}
+	return localdb.LocalToProject(localProject), nil
+}
+
 func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status string) (*ProjectConfigurationsResult, error) {
 	project, err := s.GetByUUID(projectUUID, ownerUsername)
 	if err != nil {

internal/services/quote.go

@@ -111,6 +111,9 @@ func (s *QuoteService) ValidateAndCalculate(req *QuoteRequest) (*QuoteValidation
 	if len(req.Items) == 0 {
 		return nil, ErrEmptyQuote
 	}
+	for i := range req.Items {
+		req.Items[i].LotName = models.NormalizeLotName(req.Items[i].LotName)
+	}
 
 	// Strict local-first path: calculations use local SQLite snapshot regardless of online status.
 	if s.localDB != nil {
@@ -245,6 +248,16 @@ func (s *QuoteService) CalculatePriceLevels(req *PriceLevelsRequest) (*PriceLeve
 	if len(req.Items) == 0 {
 		return nil, ErrEmptyQuote
 	}
+	// Keep original lot names so the response mirrors what the caller sent.
+	// Normalization is applied only for internal DB lookups.
+	originalLotNames := make(map[string]string, len(req.Items))
+	for i := range req.Items {
+		upper := models.NormalizeLotName(req.Items[i].LotName)
+		if _, exists := originalLotNames[upper]; !exists {
+			originalLotNames[upper] = req.Items[i].LotName
+		}
+		req.Items[i].LotName = upper
+	}
 
 	lotNames := make([]string, 0, len(req.Items))
 	seenLots := make(map[string]struct{}, len(req.Items))
@@ -303,8 +316,12 @@ func (s *QuoteService) CalculatePriceLevels(req *PriceLevelsRequest) (*PriceLeve
 	}
 
 	for _, reqItem := range req.Items {
+		responseLotName := originalLotNames[reqItem.LotName]
+		if responseLotName == "" {
+			responseLotName = reqItem.LotName
+		}
 		item := PriceLevelsItem{
-			LotName:      reqItem.LotName,
+			LotName:      responseLotName,
 			Quantity:     reqItem.Quantity,
 			PriceMissing: make([]string, 0, 3),
 		}

internal/services/sync/partnumber_seen.go

@@ -1,20 +1,31 @@
 package sync
 
 import (
+	"encoding/json"
 	"fmt"
 	"log/slog"
+	"strings"
 	"time"
 )
 
 // SeenPartnumber represents an unresolved vendor partnumber to report.
 type SeenPartnumber struct {
-	Partnumber  string
-	Description string
-	Ignored     bool
+	Partnumber    string
+	Description   string
+	Ignored       bool
+	LotSuggestion []LotSuggestionEntry // optional; set when user manually mapped PN → LOT in UI
+}
+
+// LotSuggestionEntry is one suggested LOT mapping for a vendor partnumber.
+// JSON shape mirrors qt_partnumber_book_items.lots_json: {"lot_name", "qty"}.
+type LotSuggestionEntry struct {
+	LotName string `json:"lot_name"`
+	Qty     int    `json:"qty"`
 }
 
 // PushPartnumberSeen inserts unresolved vendor partnumbers into qt_vendor_partnumber_seen on MariaDB.
-// Existing rows are left untouched: no updates to last_seen_at, is_ignored, or description.
+// When LotSuggestion is provided the column is updated too; if the column does not exist yet
+// (migration pending) the write is retried without it and a warning is logged — the app never panics.
 func (s *Service) PushPartnumberSeen(items []SeenPartnumber) error {
 	if len(items) == 0 {
 		return nil
@@ -30,7 +41,43 @@ func (s *Service) PushPartnumberSeen(items []SeenPartnumber) error {
 		if item.Partnumber == "" {
 			continue
 		}
-		err := mariaDB.Exec(`
+
+		if len(item.LotSuggestion) > 0 {
+			suggJSON, marshalErr := json.Marshal(item.LotSuggestion)
+			if marshalErr != nil {
+				slog.Error("partnumber_seen: failed to marshal lot_suggestion, skipping suggestion",
+					"partnumber", item.Partnumber, "error", marshalErr)
+				suggJSON = nil
+			}
+
+			if suggJSON != nil {
+				err = mariaDB.Exec(`
+					INSERT INTO qt_vendor_partnumber_seen
+						(source_type, vendor, partnumber, description, is_ignored, last_seen_at, lot_suggestion)
+					VALUES
+						('manual', '', ?, ?, ?, ?, ?)
+					ON DUPLICATE KEY UPDATE
+						lot_suggestion = VALUES(lot_suggestion),
+						last_seen_at   = NOW(3)
+				`, item.Partnumber, item.Description, item.Ignored, now, string(suggJSON)).Error
+
+				if err == nil {
+					continue
+				}
+
+				// Column not yet migrated — fall through to insert without lot_suggestion.
+				if !isUnknownColumnError(err) {
+					slog.Error("partnumber_seen: failed to upsert with lot_suggestion",
+						"partnumber", item.Partnumber, "error", err)
+					continue
+				}
+				slog.Warn("partnumber_seen: lot_suggestion column missing (migration pending), inserting without it",
+					"partnumber", item.Partnumber)
+			}
+		}
+
+		// Insert without lot_suggestion (baseline behaviour or fallback).
+		err = mariaDB.Exec(`
 			INSERT INTO qt_vendor_partnumber_seen
 				(source_type, vendor, partnumber, description, is_ignored, last_seen_at)
 			VALUES
@@ -40,10 +87,18 @@ func (s *Service) PushPartnumberSeen(items []SeenPartnumber) error {
 		`, item.Partnumber, item.Description, item.Ignored, now).Error
 		if err != nil {
 			slog.Error("failed to insert partnumber_seen", "partnumber", item.Partnumber, "error", err)
-			// Continue with remaining items
 		}
 	}
 
 	slog.Info("partnumber_seen pushed to server", "count", len(items))
 	return nil
 }
+
+// isUnknownColumnError returns true when MariaDB reports that a column does not exist.
+func isUnknownColumnError(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := strings.ToLower(err.Error())
+	return strings.Contains(msg, "unknown column") || strings.Contains(msg, "1054")
+}

internal/services/sync/readiness.go

@@ -1,6 +1,7 @@
 package sync
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"log/slog"
@@ -320,14 +321,37 @@ func latestSyncErrorState(local *localdb.LocalDB) (*string, *string) {
 		return optionalString(strings.TrimSpace(guard.ReasonCode)), optionalString(strings.TrimSpace(guard.ReasonText))
 	}
 
-	var pending localdb.PendingChange
+	var errored []localdb.PendingChange
 	if err := local.DB().
 		Where("TRIM(COALESCE(last_error, '')) <> ''").
 		Order("id DESC").
-		First(&pending).Error; err == nil {
-		return optionalString("PENDING_CHANGE_ERROR"), optionalString(strings.TrimSpace(pending.LastError))
+		Limit(20).
+		Find(&errored).Error; err != nil || len(errored) == 0 {
+		return nil, nil
 	}
-	return nil, nil
+
+	type errorEntry struct {
+		Type     string `json:"type"`
+		UUID     string `json:"uuid"`
+		Op       string `json:"op"`
+		Attempts int    `json:"attempts"`
+		Error    string `json:"error"`
+	}
+	entries := make([]errorEntry, 0, len(errored))
+	for _, ch := range errored {
+		entries = append(entries, errorEntry{
+			Type:     ch.EntityType,
+			UUID:     ch.EntityUUID,
+			Op:       ch.Operation,
+			Attempts: ch.Attempts,
+			Error:    strings.TrimSpace(ch.LastError),
+		})
+	}
+	detail, jsonErr := json.Marshal(entries)
+	if jsonErr != nil {
+		return optionalString("PENDING_CHANGE_ERROR"), optionalString(strings.TrimSpace(errored[0].LastError))
+	}
+	return optionalString("PENDING_CHANGE_ERROR"), optionalString(string(detail))
 }
 
 func optionalString(value string) *string {

internal/services/sync/service.go

@@ -322,6 +322,12 @@ func (s *Service) NeedSync() (bool, error) {
 
 // SyncPricelists synchronizes all active pricelists from server to local SQLite
 func (s *Service) SyncPricelists() (int, error) {
+	s.pricelistMu.Lock()
+	defer s.pricelistMu.Unlock()
+	return s.syncPricelists()
+}
+
+func (s *Service) syncPricelists() (int, error) {
 	slog.Info("starting pricelist sync")
 	plSyncStart := time.Now()
 	if _, err := s.EnsureReadinessForSync(); err != nil {
@@ -336,6 +342,12 @@ func (s *Service) SyncPricelists() (int, error) {
 		return 0, fmt.Errorf("database not available: %w", err)
 	}
 
+	defer func() {
+		if reportErr := s.reportClientSchemaState(mariaDB, time.Now().UTC()); reportErr != nil {
+			slog.Warn("failed to report client state after pricelist sync", "error", reportErr)
+		}
+	}()
+
 	// Create repository
 	pricelistRepo := repository.NewPricelistRepository(mariaDB)
 
@@ -392,6 +404,7 @@ func (s *Service) SyncPricelists() (int, error) {
 			CreatedAt: pl.CreatedAt,
 			SyncedAt:  time.Now(),
 			IsUsed:    false,
+			IsActive:  true,
 		}
 
 		itemCount, err := s.syncNewPricelistSnapshot(localPL)
@@ -414,6 +427,12 @@ func (s *Service) SyncPricelists() (int, error) {
 		slog.Info("deleted stale local pricelists", "deleted", removed)
 	}
 
+	// Mirror server-side deactivations: any local pricelist not in the current active set
+	// is marked is_active=false so offline lookups skip it.
+	if err := s.localDB.DeactivateLocalPricelistsNotIn(serverPricelistIDs); err != nil {
+		slog.Warn("failed to deactivate stale local pricelists", "error", err)
+	}
+
 	// Backfill lot_category for used pricelists (older local caches may miss the column values).
 	s.backfillUsedPricelistItemCategories(pricelistRepo, serverPricelistIDs)
 
@@ -764,9 +783,16 @@ func (s *Service) fetchServerPricelistItems(serverPricelistID uint) ([]localdb.L
 		return nil, fmt.Errorf("getting server pricelist items: %w", err)
 	}
 
-	localItems := make([]localdb.LocalPricelistItem, len(serverItems))
-	for i, item := range serverItems {
-		localItems[i] = *localdb.PricelistItemToLocal(&item, 0)
+	seen := make(map[string]struct{}, len(serverItems))
+	localItems := make([]localdb.LocalPricelistItem, 0, len(serverItems))
+	for i := range serverItems {
+		lotName := serverItems[i].LotName
+		if _, dup := seen[lotName]; dup {
+			slog.Warn("duplicate lot_name in server pricelist, skipping", "pricelist_id", serverPricelistID, "lot_name", lotName)
+			continue
+		}
+		seen[lotName] = struct{}{}
+		localItems = append(localItems, *localdb.PricelistItemToLocal(&serverItems[i], 0))
 	}
 
 	return localItems, nil
@@ -843,7 +869,7 @@ func (s *Service) SyncPricelistsIfNeeded() error {
 	}
 
 	slog.Info("new pricelists detected, syncing...")
-	_, err = s.SyncPricelists()
+	_, err = s.syncPricelists()
 	if err != nil {
 		return fmt.Errorf("syncing pricelists: %w", err)
 	}
@@ -851,6 +877,11 @@ func (s *Service) SyncPricelistsIfNeeded() error {
 	return nil
 }
 
+// maxPendingChangeAttempts is the number of failed attempts after which a pending change
+// is considered unrecoverable and removed from the queue. Applies only to changes that
+// fail with a non-transient error (e.g. corrupt payload, unknown operation).
+const maxPendingChangeAttempts = 20
+
 // PushPendingChanges pushes all pending changes to the server
 func (s *Service) PushPendingChanges() (int, error) {
 	if _, err := s.EnsureReadinessForSync(); err != nil {
@@ -864,6 +895,14 @@ func (s *Service) PushPendingChanges() (int, error) {
 		slog.Info("purged orphan configuration pending changes", "removed", removed)
 	}
 
+	// Auto-repair locally-fixable problems (e.g. stale project references)
+	// before attempting to push, so that repaired changes succeed on this cycle.
+	if repaired, _, repairErr := s.localDB.RepairPendingChanges(); repairErr != nil {
+		slog.Warn("auto-repair of errored pending changes failed", "error", repairErr)
+	} else if repaired > 0 {
+		slog.Info("auto-repaired errored pending changes", "repaired", repaired)
+	}
+
 	changes, err := s.localDB.GetPendingChanges()
 	if err != nil {
 		return 0, fmt.Errorf("getting pending changes: %w", err)
@@ -875,7 +914,10 @@ func (s *Service) PushPendingChanges() (int, error) {
 	}
 
 	slog.Info("pushing pending changes", "count", len(changes))
+	pushStart := time.Now()
 	pushed := 0
+	failed := 0
+	var firstErr string
 	var syncedIDs []int64
 	sortedChanges := prioritizeProjectChanges(changes)
 
@@ -884,8 +926,18 @@ func (s *Service) PushPendingChanges() (int, error) {
 		if err != nil {
 			s.markConnectionBroken(err)
 			slog.Warn("failed to push change", "id", change.ID, "type", change.EntityType, "operation", change.Operation, "error", err)
-			// Increment attempts
+			newAttempts := change.Attempts + 1
 			s.localDB.IncrementPendingChangeAttempts(change.ID, err.Error())
+			if firstErr == "" {
+				firstErr = err.Error()
+			}
+			failed++
+			if newAttempts >= maxPendingChangeAttempts {
+				slog.Error("abandoning pending change after max attempts",
+					"id", change.ID, "type", change.EntityType, "op", change.Operation,
+					"attempts", newAttempts, "last_error", err.Error())
+				syncedIDs = append(syncedIDs, change.ID)
+			}
 			continue
 		}
 
@@ -900,7 +952,13 @@ func (s *Service) PushPendingChanges() (int, error) {
 		}
 	}
 
-	slog.Info("pending changes pushed", "pushed", pushed, "failed", len(changes)-pushed)
+	if failed > 0 {
+		s.localDB.AppendSyncLog("changes", "error", firstErr, pushed, pushStart, time.Since(pushStart).Milliseconds())
+	} else {
+		s.localDB.AppendSyncLog("changes", "ok", "", pushed, pushStart, time.Since(pushStart).Milliseconds())
+	}
+
+	slog.Info("pending changes pushed", "pushed", pushed, "failed", failed)
 	return pushed, nil
 }
 
@@ -912,7 +970,11 @@ func (s *Service) pushSingleChange(change *localdb.PendingChange) error {
 	case "configuration":
 		return s.pushConfigurationChange(change)
 	default:
-		return fmt.Errorf("unknown entity type: %s", change.EntityType)
+		// Unknown entity type: this change was queued by a newer or different build
+		// and cannot be processed. Remove it from the queue.
+		slog.Warn("dropping pending change with unknown entity type",
+			"id", change.ID, "type", change.EntityType, "op", change.Operation)
+		return nil
 	}
 }
 
@@ -1045,7 +1107,10 @@ func (s *Service) pushConfigurationChange(change *localdb.PendingChange) error {
 	case "delete":
 		return s.pushConfigurationDelete(change)
 	default:
-		return fmt.Errorf("unknown operation: %s", change.Operation)
+		// Unknown operation: queued by a newer or different build. Drop from queue.
+		slog.Warn("dropping pending change with unknown operation",
+			"id", change.ID, "type", change.EntityType, "op", change.Operation)
+		return nil
 	}
 }
 
@@ -1245,24 +1310,30 @@ func (s *Service) ensureConfigurationProject(mariaDB *gorm.DB, cfg *models.Confi
 
 		localProject, localErr := s.localDB.GetProjectByUUID(*cfg.ProjectUUID)
 		if localErr != nil {
-			return err
+			// Project not found locally either: stale reference (project was deleted).
+			// Fall through to system project so this configuration is not stuck forever.
+			slog.Warn("configuration references missing project, assigning to system project",
+				"cfg_uuid", cfg.UUID,
+				"project_uuid", *cfg.ProjectUUID,
+			)
+		} else {
+			modelProject := localdb.LocalToProject(localProject)
+			if modelProject.OwnerUsername == "" {
+				modelProject.OwnerUsername = cfg.OwnerUsername
+			}
+			if createErr := projectRepo.UpsertByUUID(modelProject); createErr != nil {
+				return createErr
+			}
+			if modelProject.ID > 0 {
+				serverID := modelProject.ID
+				localProject.ServerID = &serverID
+				localProject.SyncStatus = "synced"
+				now := time.Now()
+				localProject.SyncedAt = &now
+				_ = s.localDB.SaveProjectPreservingUpdatedAt(localProject)
+			}
+			return nil
 		}
-		modelProject := localdb.LocalToProject(localProject)
-		if modelProject.OwnerUsername == "" {
-			modelProject.OwnerUsername = cfg.OwnerUsername
-		}
-		if createErr := projectRepo.UpsertByUUID(modelProject); createErr != nil {
-			return createErr
-		}
-		if modelProject.ID > 0 {
-			serverID := modelProject.ID
-			localProject.ServerID = &serverID
-			localProject.SyncStatus = "synced"
-			now := time.Now()
-			localProject.SyncedAt = &now
-			_ = s.localDB.SaveProjectPreservingUpdatedAt(localProject)
-		}
-		return nil
 	}
 
 	systemProject := &models.Project{}
@@ -1574,24 +1645,3 @@ func (s *Service) getConnectionStatus() db.ConnectionStatus {
 	return s.connMgr.GetStatus()
 }
 
-// SyncComponentsIfEmpty syncs components from MariaDB when local_components is empty.
-// Used by the background worker on first run to populate the catalog for new users.
-func (s *Service) SyncComponentsIfEmpty() error {
-	if s.localDB.CountComponents() > 0 {
-		return nil
-	}
-	mariaDB, err := s.getDB()
-	if err != nil {
-		_ = s.localDB.SetComponentSyncResult("error", err.Error(), time.Now())
-		return err
-	}
-	result, err := s.localDB.SyncComponents(mariaDB)
-	now := time.Now()
-	if err != nil {
-		_ = s.localDB.SetComponentSyncResult("error", err.Error(), now)
-		return err
-	}
-	_ = s.localDB.SetComponentSyncResult("ok", "", now)
-	slog.Info("background sync: initial component sync completed", "synced", result.TotalSynced)
-	return nil
-}

internal/services/sync/worker.go

@@ -80,11 +80,6 @@ func (w *Worker) runSync() {
 		return
 	}
 
-	// Populate component catalog on first run (empty local_components)
-	if err := w.service.SyncComponentsIfEmpty(); err != nil {
-		w.logger.Warn("background sync: initial component sync failed", "error", err)
-	}
-
 	// Push pending changes first
 	pushed, err := w.service.PushPendingChanges()
 	if err != nil {
@@ -100,5 +95,10 @@ func (w *Worker) runSync() {
 		return
 	}
 
+	// Pull partnumber books together with pricelists
+	if _, err := w.service.PullPartnumberBooks(); err != nil {
+		w.logger.Warn("background sync: failed to pull partnumber books", "error", err)
+	}
+
 	w.logger.Info("background sync cycle completed")
 }

internal/services/vendor_workspace_import.go

@@ -135,6 +135,8 @@ func (s *LocalConfigurationService) ImportVendorWorkspaceToProject(projectUUID s
 		workspace, err = parseQuoteForgeCSV(data, filepath.Base(sourceFileName))
 	case IsInspurBOM(data):
 		workspace, err = parseInspurBOM(data, filepath.Base(sourceFileName))
+	case IsNxBOM(data):
+		workspace, err = parseNxBOM(data, filepath.Base(sourceFileName))
 	case IsTextBOM(data):
 		workspace, err = parseTextBOM(data, filepath.Base(sourceFileName))
 	default:
@@ -683,6 +685,93 @@ func parseInspurBOM(data []byte, sourceFileName string) (*importedWorkspace, err
 	}, nil
 }
 
+// nxBOMItemLine matches a quantity-first BOM line: "<qty>x <description>"
+// where the quantity prefix is digits followed immediately by "x" (case-insensitive).
+// Parentheses, commas, and hyphens inside the description are preserved.
+var nxBOMItemLine = regexp.MustCompile(`(?i)^(\d+)[xX]\s+(.+\S)\s*$`)
+
+// IsNxBOM reports whether data looks like a quantity-first "Nx" BOM where each
+// item line begins with "<qty>x <description>" (e.g. "2x Intel Xeon 8570 ...").
+func IsNxBOM(data []byte) bool {
+	for _, raw := range strings.Split(string(data), "\n") {
+		if nxBOMItemLine.MatchString(strings.TrimSpace(raw)) {
+			return true
+		}
+	}
+	return false
+}
+
+// parseNxBOM parses a quantity-first "Nx" BOM into a single configuration.
+// An optional header line ending with ", в составе:" supplies server_model and name.
+// Each "<qty>x <description>" line becomes one vendor spec row; description is stored
+// as both vendor_partnumber and description so rows resolve through the active
+// partnumber book when matched and otherwise stay unresolved and editable in the UI.
+func parseNxBOM(data []byte, sourceFileName string) (*importedWorkspace, error) {
+	lines := strings.Split(string(data), "\n")
+	rows := make([]localdb.VendorSpecItem, 0, len(lines))
+	sortOrder := 10
+	serverModel := ""
+
+	for _, raw := range lines {
+		line := strings.TrimSpace(raw)
+		if line == "" {
+			continue
+		}
+		if m := textBOMHeaderLine.FindStringSubmatch(line); m != nil {
+			if fields := strings.Fields(m[1]); len(fields) > 0 {
+				serverModel = fields[len(fields)-1]
+			}
+			continue
+		}
+		m := nxBOMItemLine.FindStringSubmatch(line)
+		if m == nil {
+			continue
+		}
+		qty, err := strconv.Atoi(m[1])
+		if err != nil || qty <= 0 {
+			continue
+		}
+		description := strings.TrimSpace(m[2])
+		if description == "" {
+			continue
+		}
+		rows = append(rows, localdb.VendorSpecItem{
+			SortOrder:        sortOrder,
+			VendorPartnumber: description,
+			Quantity:         qty,
+			Description:      description,
+		})
+		sortOrder += 10
+	}
+
+	if len(rows) == 0 {
+		return nil, fmt.Errorf("Nx BOM has no importable rows")
+	}
+
+	name := serverModel
+	if name == "" {
+		name = strings.TrimSuffix(filepath.Base(sourceFileName), filepath.Ext(sourceFileName))
+	}
+	if name == "" {
+		name = "Nx BOM Import"
+	}
+
+	return &importedWorkspace{
+		SourceFormat:   "Nx",
+		SourceFileName: sourceFileName,
+		Configurations: []importedConfiguration{
+			{
+				GroupID:     "nx-0",
+				Name:        name,
+				Line:        10,
+				ServerCount: 1,
+				ServerModel: serverModel,
+				Rows:        rows,
+			},
+		},
+	}, nil
+}
+
 // textBOMItemLine matches a human-readable BOM line of the form
 // "<description> - <quantity> шт." where the separator may be a hyphen,
 // en-dash or em-dash and the quantity may have an optional space before "шт".
@@ -709,6 +798,8 @@ func ParsePastedBOMText(text string) ([]localdb.VendorSpecItem, string) {
 	switch {
 	case IsInspurBOM(data):
 		ws, err = parseInspurBOM(data, "")
+	case IsNxBOM(data):
+		ws, err = parseNxBOM(data, "")
 	case IsTextBOM(data):
 		ws, err = parseTextBOM(data, "")
 	default:

releases/v1.14/RELEASE_NOTES.md

@@ -0,0 +1,25 @@
+# QuoteForge v1.14
+
+Дата релиза: 2026-06-16
+Тег: `v1.14`
+
+Предыдущий релиз: `v1.13`
+
+## Ключевые изменения
+
+- добавлен импорт человекочитаемого текстового BOM формата `<описание> - <кол-во> шт.`
+  (с необязательным заголовком, оканчивающимся на `, в составе:`) — как при загрузке файла
+  через `POST /api/projects/:uuid/vendor-import`, так и при вставке в конфигураторе;
+- заголовок конфигурации определяется по маркеру `, в составе:` с любым префиксом
+  (`Сервер X3` и `Вычислительный GPU сервер X3` → модель `X3`);
+- парсинг устойчив к пробелам в начале/конце строки (в P/N не попадает лишний пробел),
+  а также к запятым и дефисам внутри описания (`RAID0,1,10`, `8-GPU-2304GB`);
+- вставка BOM в конфигураторе и импорт файла используют единый серверный парсер
+  (`POST /api/vendor-spec/parse-text`) — дублирующая логика разбора на фронтенде удалена;
+- сабмодуль `bible` обновлён до актуальных контрактов (build-version-display,
+  local-first-recovery, резервные копии миграций).
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v1.16/RELEASE_NOTES.md

@@ -0,0 +1,20 @@
+# QuoteForge v1.16
+
+Дата релиза: 2026-06-16
+Тег: `v1.16`
+
+Предыдущий релиз: `v1.15`
+
+## Ключевые изменения
+
+- self-heal застрявших pending changes: конфигурации со ссылкой на удалённый проект теперь автоматически переназначаются на «Без проекта» вместо вечной ошибки;
+- авторемонт очереди (`RepairPendingChanges`) запускается автоматически перед каждым push-циклом;
+- после 20 неудачных попыток неисправимые записи удаляются из очереди (логируются как ERROR);
+- неизвестные `entity_type` и `operation` в очереди дропаются с предупреждением вместо блокировки;
+- детальная диагностика в `qt_client_schema_state.last_sync_error_text`: теперь JSON-массив с `uuid`/`op`/`attempts`/`error` по каждому застрявшему изменению;
+- книги партномеров синхронизируются автоматически вместе с прайслистами.
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v1.17/RELEASE_NOTES.md

@@ -0,0 +1,15 @@
+# QuoteForge v1.17
+
+Дата релиза: 2026-06-16
+Тег: `v1.17`
+
+Предыдущий релиз: `v1.16`
+
+## Ключевые изменения
+
+- исправлен поиск в разделе Партномера по LOT-имени и описанию — `lots_json` хранится как BLOB, `modernc.org/sqlite` не коерсит BLOB→TEXT при LIKE, исправлено через `CAST(lots_json AS TEXT) LIKE`;
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v1.18/RELEASE_NOTES.md

@@ -0,0 +1,20 @@
+# QuoteForge v1.18
+
+Дата релиза: 2026-06-18
+Тег: `v1.18`
+
+Предыдущий релиз: `v1.17`
+
+## Ключевые изменения
+
+- BOM: поддержка формата `<qty>x <description>` при импорте Nx-спецификаций;
+- BOM: приоритет cart-LOT в дропдауне, корректный qtyMismatch при lot_qty_per_pn > 1;
+- CSV экспорт: bundle (1 PN → N LOT) разворачивается в отдельные строки;
+- ценообразование: ручная цена (buy/sale) сохраняется и экспортируется в CSV;
+- ценообразование: таблица использует qty из корзины как источник истины;
+- ценообразование: правильный порядок строк (MB→CPU→MEM→…) в pricing CSV и вкладке Ценообразование при отсутствии BOM;
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v2.19/RELEASE_NOTES.md

@@ -0,0 +1,35 @@
+# QuoteForge v2.19
+
+Дата релиза: 2026-06-23
+Тег: `v2.19`
+
+## Что нового
+
+### Серверно-управляемые настройки конфигуратора
+
+Типы устройств, структура вкладок и фильтры категорий теперь приезжают с сервера вместо жёстко заданных JS-констант.
+
+- новая таблица `qt_settings` на стороне сервера (контракт в `bible-local/server-contract-qt-settings.md`);
+- QF синхронизирует `qt_settings` → `local_qt_settings` (SQLite) после каждой синхронизации компонентов;
+- новый endpoint `GET /api/configurator-settings` отдаёт четыре настройки: `config_types`, `tab_config`, `always_visible_tabs`, `required_categories`;
+- при недоступности сервера или отсутствии таблицы QF автоматически использует прежние захардкоженные значения — поведение не меняется.
+
+### Динамический выбор типа оборудования
+
+- модальное окно «Новая конфигурация» загружает типы устройств с сервера: названия и количество кнопок определяются в `qt_settings.config_types`;
+- добавление новых типов устройств не требует обновления QF.
+
+### Серверно-управляемая фильтрация категорий
+
+- конфигуратор фильтрует LOT-категории по списку из `qt_settings.config_types[].categories`;
+- структура вкладок обновляется из `qt_settings.tab_config` (порядок вкладок, подразделы, single-select режим);
+- бейдж на вкладке при незаполненных обязательных категориях (`qt_settings.required_categories`).
+
+### Прочее
+
+- тайтлы страниц переименованы с OFS на QFS.
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v2.21/RELEASE_NOTES.md

@@ -0,0 +1,29 @@
+# QuoteForge v2.21
+
+Дата релиза: 2026-06-25
+Тег: `v2.21`
+
+## Что нового
+
+### Короткие ссылки на проекты и варианты
+
+- `GET /:code` — редирект на проект по коду опти (регистронезависимо);
+- `GET /:code/:variant` — редирект на конкретный вариант проекта;
+- валидация кода опти и имени варианта: только URL-безопасные символы `[A-Za-z0-9._-]` — проверка на бэкенде и в форме с подсказкой `«Используется в URL: /КОД/Вариант»`.
+
+### Ревизия «до обновления цен»
+
+При нажатии «Обновить цены» автоматически создаётся ревизия текущего состояния конфигурации до применения новых цен, после чего сохраняется ревизия с обновлёнными ценами. История изменений теперь полная.
+
+### Исправления
+
+- Старая цена в итоге конфигурации больше не зачёркивается, если цены фактически не изменились.
+- Устранён race condition: `SyncPricelists()` теперь защищена мьютексом — параллельный запуск фонового тикера и ручной синхронизации больше не приводит к `UNIQUE constraint failed`.
+- Дублирующиеся `lot_name` в серверном прайслисте пропускаются при загрузке вместо аварийного завершения синхронизации.
+- Ошибки отправки конфигураций и проектов на сервер теперь видны в диалоге «Информация о синхронизации» и в support bundle (`sync_log`, тип `changes`).
+- Состояние клиента (`last_sync_error_code` и др.) отправляется на сервер по завершении синхронизации независимо от её результата.
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v2.22/RELEASE_NOTES.md

@@ -0,0 +1,23 @@
+# QuoteForge v2.22
+
+Дата релиза: 2026-06-26
+Тег: `v2.22`
+
+## Что нового
+
+### Исправления
+
+- **MB-автокомплит в конфигураторе теперь работает в offline-режиме.** Корневая причина: прайслист мог быть синхронизирован до введения нормализации имён лотов, из-за чего SQLite хранил их в исходном регистре (`MB_AMD_2.Rome_...`). Запрос на поиск цены отправлял уже нормализованное имя (`MB_AMD_2.ROME_...`), `IN`-сравнение в SQLite регистрозависимо — совпадений не было, цена возвращалась как null, и автокомплит показывал пустой список. Все запросы к `local_pricelist_items` по `lot_name` переведены на `UPPER(lot_name)`.
+
+- **Удалён мёртвый код инференса категории из имени лота.** Функция `getCategoryFromLotName` на фронтенде выводила категорию из префикса лота (`DKC_AFF_A1K` → `DKC`) как fallback. Категория всегда приходит из прайслиста; функция удалена. Позиции без категории корректно попадают во вкладку «Other».
+
+- **Удалена таблица `local_components` и весь связанный с ней код.** Источник данных для компонентов — только `local_pricelist_items`. Убраны маршрут `POST /api/sync/components`, поля `ComponentsSynced` и `LastComponentSync` в ответах синхронизации.
+
+- **Support bundle расширен диагностическими файлами:** `latest_pricelist_items.json` (все позиции активного estimate-прайслиста), `autocomplete_lots.json` (позиции по категориям с флагом `has_price`), `local.db` (полная копия SQLite-базы).
+
+- **Регистронезависимые сравнения lot_name на фронтенде:** Set-коллекции для склада, добавленных позиций и корзины BOM теперь нормализуют ключи через `.toUpperCase()`.
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

releases/v2.23/RELEASE_NOTES.md

@@ -0,0 +1,23 @@
+# QuoteForge v2.23
+
+Дата релиза: 2026-06-26
+Тег: `v2.23`
+
+## Что нового
+
+### Исправления
+
+- **Конфигуратор больше не зависает на «Загрузка...».** При открытии сохранённой конфигурации поле `category` у позиций корзины было `undefined` (в `config.items` хранятся только `lot_name/quantity/unit_price`), что приводило к `TypeError` в JS. Теперь после загрузки `allComponents` корзина обогащается категориями из справочника компонентов.
+
+- **Регистронезависимые сравнения категорий в конфигураторе.** Все сравнения `category` переведены на хелпер `ciStr()` вместо принудительного `.toUpperCase()` — интерфейс показывает категории как есть, логика сравнения регистронезависима.
+
+- **Вкладка Other показывает только компоненты без назначенной категории.** Исправлена ошибка при которой компоненты DKC/CTL/ENC попадали в Other при режиме «server»: `ASSIGNED_CATEGORIES` пересобирался из отфильтрованного списка, а не из полного статического. Теперь используется `_allCategories`.
+
+- **Исправлена ошибка «record not found» при синхронизации проектов.** `UpsertByUUID` передавал ненулевой `ID` в `INSERT … ON DUPLICATE KEY UPDATE`, из-за чего MariaDB разрешала коллизию по первичному ключу чужой строки, не обновляя `uuid`, — последующий `SELECT` не находил запись. Теперь `project.ID` сбрасывается в `0` до вставки.
+
+- **Устранён бесконечный retry при ошибках синхронизации на стороне сервера.** `RepairPendingChanges` сбрасывал счётчик попыток даже если локальные данные не менялись, что создавало бесконечный цикл при серверных ошибках. Repair-функции теперь возвращают `(bool, error)` и сброс происходит только при `modified=true`.
+
+## Запуск на macOS
+
+Снимите карантинный атрибут через терминал: `xattr -d com.apple.quarantine /path/to/qfs-darwin-arm64`  
+После этого бинарник запустится без предупреждения Gatekeeper.

scripts/release.sh

@@ -53,45 +53,34 @@ mkdir -p "${RELEASE_DIR}"
 # Create release notes template only when missing.
 ensure_release_notes "${RELEASE_DIR}/RELEASE_NOTES.md"
 
-# Build for all platforms
+# Build binaries
 echo -e "${YELLOW}→ Building binaries...${NC}"
-make build-all
+
+LDFLAGS="-s -w -X main.Version=${VERSION}"
+
+echo "Building qfs for macOS (Apple Silicon)..."
+CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="${LDFLAGS}" -o bin/qfs-darwin-arm64 ./cmd/qfs
+echo "✓ Built: bin/qfs-darwin-arm64"
+
+echo "Building qfs for Windows..."
+CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="${LDFLAGS}" -o bin/qfs-windows-amd64.exe ./cmd/qfs
+echo "✓ Built: bin/qfs-windows-amd64.exe"
 
 # Package binaries with checksums
 echo ""
 echo -e "${YELLOW}→ Creating release packages...${NC}"
 
-# Linux AMD64
-if [ -f "bin/qfs-linux-amd64" ]; then
-    cd bin
-    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-linux-amd64.tar.gz" qfs-linux-amd64
-    cd ..
-    echo -e "${GREEN}  ✓ qfs-${VERSION}-linux-amd64.tar.gz${NC}"
-fi
-
-# macOS Intel
-if [ -f "bin/qfs-darwin-amd64" ]; then
-    cd bin
-    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-darwin-amd64.tar.gz" qfs-darwin-amd64
-    cd ..
-    echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-amd64.tar.gz${NC}"
-fi
-
 # macOS Apple Silicon
-if [ -f "bin/qfs-darwin-arm64" ]; then
-    cd bin
-    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-darwin-arm64.tar.gz" qfs-darwin-arm64
-    cd ..
-    echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-arm64.tar.gz${NC}"
-fi
+cd bin
+tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-darwin-arm64.tar.gz" qfs-darwin-arm64
+cd ..
+echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-arm64.tar.gz${NC}"
 
 # Windows AMD64
-if [ -f "bin/qfs-windows-amd64.exe" ]; then
-    cd bin
-    zip -q "../${RELEASE_DIR}/qfs-${VERSION}-windows-amd64.zip" qfs-windows-amd64.exe
-    cd ..
-    echo -e "${GREEN}  ✓ qfs-${VERSION}-windows-amd64.zip${NC}"
-fi
+cd bin
+zip -q "../${RELEASE_DIR}/qfs-${VERSION}-windows-amd64.zip" qfs-windows-amd64.exe
+cd ..
+echo -e "${GREEN}  ✓ qfs-${VERSION}-windows-amd64.zip${NC}"
 
 # Generate checksums
 echo ""

web/templates/base.html

@@ -629,11 +629,13 @@
 
                 const totalColor = totalDelta > 0 ? 'text-red-600' : totalDelta < 0 ? 'text-green-600' : 'text-gray-600';
                 const totalArrow = _fmtArrow(r.prevTotal || 0, r.newTotal || 0);
+                const totalPrevHtml = totalDelta !== 0
+                    ? `<span class="text-gray-400 line-through text-xs mr-1">${_fmtMoneyDiff(r.prevTotal || 0)}</span>`
+                    : '';
                 html += `<div class="flex justify-between items-center text-sm bg-gray-50 rounded px-3 py-2 mb-1">
                     <span class="text-gray-600 font-medium">Итог конфигурации</span>
                     <span>
-                        <span class="text-gray-400 line-through text-xs mr-1">${_fmtMoneyDiff(r.prevTotal || 0)}</span>
-                        <span class="${totalColor} font-semibold">${_fmtMoneyDiff(r.newTotal || 0)}</span>${totalArrow}
+                        ${totalPrevHtml}<span class="${totalColor} font-semibold">${_fmtMoneyDiff(r.newTotal || 0)}</span>${totalArrow}
                     </span>
                 </div>`;
             }

web/templates/config_revisions.html

@@ -1,4 +1,4 @@
-{{define "title"}}Ревизии - OFS{{end}}
+{{define "title"}}QFS Ревизии{{end}}
 
 {{define "content"}}
 <div class="space-y-4">

web/templates/configs.html

@@ -1,4 +1,4 @@
-{{define "title"}}Мои конфигурации - OFS{{end}}
+{{define "title"}}QFS Мои конфигурации{{end}}
 
 {{define "content"}}
 <div class="space-y-4">
@@ -55,12 +55,12 @@
         <div class="space-y-4">
             <div>
                 <label class="block text-sm font-medium text-gray-700 mb-1">Тип оборудования</label>
-                <div class="inline-flex rounded-lg border border-gray-200 overflow-hidden w-full">
-                    <button type="button" id="type-server-btn" onclick="setCreateType('server')"
+                <div id="config-type-buttons" class="inline-flex rounded-lg border border-gray-200 overflow-hidden w-full">
+                    <button type="button" data-type="server" onclick="setCreateType('server')"
                             class="flex-1 py-2 text-sm font-medium bg-blue-600 text-white">
                         Сервер
                     </button>
-                    <button type="button" id="type-storage-btn" onclick="setCreateType('storage')"
+                    <button type="button" data-type="storage" onclick="setCreateType('storage')"
                             class="flex-1 py-2 text-sm font-medium bg-white text-gray-700 hover:bg-gray-50 border-l border-gray-200">
                         СХД
                     </button>
@@ -532,18 +532,51 @@ async function cloneConfig() {
 }
 
 let createConfigType = 'server';
+let _cfgSettings = null;
+
+async function loadCfgSettings() {
+    if (_cfgSettings) return _cfgSettings;
+    try {
+        const r = await fetch('/api/configurator-settings');
+        if (r.ok) _cfgSettings = await r.json();
+    } catch(e) { /* use hardcoded fallback */ }
+    return _cfgSettings;
+}
+
+function renderConfigTypeButtons(types) {
+    if (!types || !types.length) return;
+    const el = document.getElementById('config-type-buttons');
+    if (!el) return;
+    el.innerHTML = types
+        .sort((a, b) => (a.display_order || 0) - (b.display_order || 0))
+        .map((t, i) => {
+            const borderClass = i > 0 ? 'border-l border-gray-200' : '';
+            return `<button type="button" data-type="${t.code}" onclick="setCreateType('${t.code}')"
+                class="flex-1 py-2 text-sm font-medium ${borderClass} bg-white text-gray-700 hover:bg-gray-50">
+                ${t.name_ru || t.code}
+            </button>`;
+        }).join('');
+    // activate first type
+    const firstCode = types[0].code;
+    createConfigType = firstCode;
+    setCreateType(firstCode);
+}
 
 function setCreateType(type) {
     createConfigType = type;
-    document.getElementById('type-server-btn').className = 'flex-1 py-2 text-sm font-medium ' +
-        (type === 'server' ? 'bg-blue-600 text-white' : 'bg-white text-gray-700 hover:bg-gray-50 border-l border-gray-200');
-    document.getElementById('type-storage-btn').className = 'flex-1 py-2 text-sm font-medium border-l border-gray-200 ' +
-        (type === 'storage' ? 'bg-blue-600 text-white' : 'bg-white text-gray-700 hover:bg-gray-50');
+    document.querySelectorAll('#config-type-buttons button').forEach(btn => {
+        const active = btn.dataset.type === type;
+        btn.className = 'flex-1 py-2 text-sm font-medium ' +
+            (active
+                ? 'bg-blue-600 text-white border-l border-gray-200'
+                : 'bg-white text-gray-700 hover:bg-gray-50 border-l border-gray-200');
+    });
 }
 
 function openCreateModal() {
     createConfigType = 'server';
     setCreateType('server');
+    loadCfgSettings().then(s => renderConfigTypeButtons(s && s.config_types));
     document.getElementById('opportunity-number').value = '';
     document.getElementById('create-project-input').value = '';
     document.getElementById('create-modal').classList.remove('hidden');

web/templates/index.html

@@ -1,4 +1,4 @@
-{{define "title"}}OFS - Конфигуратор{{end}}
+{{define "title"}}QFS Конфигуратор{{end}}
 
 {{define "content"}}
 <div class="space-y-4">
@@ -417,7 +417,7 @@ let TAB_CONFIG = {
 
 let ASSIGNED_CATEGORIES = Object.values(TAB_CONFIG)
     .flatMap(t => t.categories)
-    .map(c => c.toUpperCase());
+    .map(c => ciStr(c));
 
 // State
 let configUUID = '{{.ConfigUUID}}';
@@ -488,7 +488,7 @@ function updateConfigBreadcrumbs() {
     configEl.textContent = truncateBreadcrumbSpecName(fullConfigName);
     configEl.title = fullConfigName;
     versionEl.textContent = 'main';
-    document.title = code + ' / ' + variant + ' / ' + fullConfigName + ' — OFS';
+    document.title = code + ' / ' + variant + ' / ' + fullConfigName + ' — QFS';
     const configNameLinkEl = document.getElementById('breadcrumb-config-name-link');
     if (configNameLinkEl && configUUID) {
         configNameLinkEl.href = '/configs/' + configUUID + '/revisions';
@@ -504,6 +504,9 @@ let currentTab = 'base';
 let allComponents = [];
 let cart = [];
 let categoryOrderMap = {}; // Category code -> display_order mapping
+let configTypeCategoryMap = {}; // configTypeCode → Set<UPPER_CODE> of allowed categories (from server)
+let alwaysVisibleTabsSet = null; // Set<tabKey> — null means use hardcoded fallback
+let requiredCategoriesMap = {}; // configTypeCode → Set<UPPER_CODE> of required categories
 let autoSaveTimeout = null; // Timeout for debounced autosave
 let hasUnsavedChanges = false;
 let exitSaveStarted = false;
@@ -710,7 +713,7 @@ async function loadWarehouseInStockLots() {
         const lotNames = Array.isArray(data.lot_names) ? data.lot_names : [];
         lotNames.forEach(lot => {
             if (typeof lot === 'string' && lot.trim() !== '') {
-                result.add(lot);
+                result.add(lot.toUpperCase());
             }
         });
 
@@ -745,7 +748,7 @@ function isComponentAllowedByStockFilter(comp) {
     const availableLots = warehouseStockLotsByPricelist.get(pricelistID);
     // Don't block UI while stock set is being loaded.
     if (!availableLots) return true;
-    return availableLots.has(comp.lot_name);
+    return availableLots.has((comp.lot_name || '').toUpperCase());
 }
 
 // Load categories from API and update tab configuration
@@ -757,16 +760,16 @@ async function loadCategoriesFromAPI() {
         // Build category order map
         categoryOrderMap = {};
         cats.forEach(cat => {
-            categoryOrderMap[cat.code.toUpperCase()] = cat.display_order;
+            categoryOrderMap[ciStr(cat.code)] = cat.display_order;
         });
 
         // Build list of unassigned categories
         const knownCodes = Object.values(TAB_CONFIG)
             .flatMap(t => t.categories)
-            .map(c => c.toUpperCase());
+            .map(c => ciStr(c));
 
         const unassignedCategories = cats
-            .filter(cat => !knownCodes.includes(cat.code.toUpperCase()))
+            .filter(cat => !knownCodes.includes(ciStr(cat.code)))
             .sort((a, b) => a.display_order - b.display_order)
             .map(cat => cat.code);
 
@@ -776,13 +779,102 @@ async function loadCategoriesFromAPI() {
         // Rebuild ASSIGNED_CATEGORIES
         ASSIGNED_CATEGORIES = Object.values(TAB_CONFIG)
             .flatMap(t => t.categories)
-            .map(c => c.toUpperCase());
+            .map(c => ciStr(c));
     } catch(e) {
         console.error('Failed to load categories, using defaults', e);
         // Will use default configuration if API fails
     }
 }
 
+async function loadCfgSettings() {
+    if (typeof _cfgSettings !== 'undefined' && _cfgSettings) return _cfgSettings;
+    try {
+        const r = await fetch('/api/configurator-settings');
+        if (r.ok) {
+            window._cfgSettings = await r.json();
+            return window._cfgSettings;
+        }
+    } catch(e) { /* fallback to hardcoded */ }
+    return null;
+}
+
+function applyServerSettings(settings) {
+    if (!settings) return;
+
+    // config_types → category allowlist map
+    if (Array.isArray(settings.config_types) && settings.config_types.length) {
+        configTypeCategoryMap = {};
+        settings.config_types.forEach(ct => {
+            if (ct.code && Array.isArray(ct.categories)) {
+                configTypeCategoryMap[ct.code] = new Set(ct.categories.map(c => c.toUpperCase()));
+            }
+        });
+    }
+
+    // tab_config → update TAB_CONFIG (preserve .other)
+    if (Array.isArray(settings.tab_config) && settings.tab_config.length) {
+        const otherTab = TAB_CONFIG.other;
+        TAB_CONFIG = {};
+        settings.tab_config.forEach(tab => {
+            TAB_CONFIG[tab.key] = {
+                categories: Array.isArray(tab.categories) ? tab.categories : [],
+                singleSelect: !!tab.single_select,
+                label: tab.label || tab.key,
+                sections: tab.sections || undefined
+            };
+        });
+        TAB_CONFIG.other = otherTab || { categories: [], singleSelect: false, label: 'Other' };
+        ASSIGNED_CATEGORIES = Object.values(TAB_CONFIG).flatMap(t => t.categories).map(c => ciStr(c));
+    }
+
+    // always_visible_tabs
+    if (Array.isArray(settings.always_visible_tabs) && settings.always_visible_tabs.length) {
+        alwaysVisibleTabsSet = new Set(settings.always_visible_tabs);
+    }
+
+    // required_categories
+    if (settings.required_categories && typeof settings.required_categories === 'object') {
+        requiredCategoriesMap = {};
+        Object.entries(settings.required_categories).forEach(([ct, codes]) => {
+            if (Array.isArray(codes)) {
+                requiredCategoriesMap[ct] = new Set(codes.map(c => c.toUpperCase()));
+            }
+        });
+    }
+
+    applyConfigTypeToTabs();
+    updateTabVisibility();
+    updateRequiredCategoryBadges();
+}
+
+function updateRequiredCategoryBadges() {
+    const required = requiredCategoriesMap[configType];
+    if (!required || !required.size) return;
+
+    // Build set of categories that have at least one cart item
+    const filledCategories = new Set(
+        cart.map(item => (item.category || '').toUpperCase())
+    );
+
+    // For each tab, check if it contains any required-but-unfilled category
+    Object.entries(TAB_CONFIG).forEach(([tabKey, tabCfg]) => {
+        const btn = document.querySelector(`[data-tab="${tabKey}"]`);
+        if (!btn) return;
+        const tabCategories = (tabCfg.categories || []).map(c => c.toUpperCase());
+        const hasUnfilled = tabCategories.some(cat => required.has(cat) && !filledCategories.has(cat));
+        const badge = btn.querySelector('.required-badge');
+        if (hasUnfilled) {
+            if (!badge) {
+                const dot = document.createElement('span');
+                dot.className = 'required-badge inline-block w-1.5 h-1.5 bg-orange-400 rounded-full ml-1 align-middle';
+                btn.appendChild(dot);
+            }
+        } else if (badge) {
+            badge.remove();
+        }
+    });
+}
+
 // Initialize
 document.addEventListener('DOMContentLoaded', async function() {
     // RBAC disabled - no token check required
@@ -791,8 +883,9 @@ document.addEventListener('DOMContentLoaded', async function() {
         return;
     }
 
-    // Load categories in background (defaults are usable immediately).
+    // Load categories and configurator settings in background (defaults are usable immediately).
     const categoriesPromise = loadCategoriesFromAPI().catch(() => {});
+    loadCfgSettings().then(s => applyServerSettings(s)).catch(() => {});
 
     try {
         const resp = await fetch('/api/configs/' + configUUID);
@@ -832,8 +925,7 @@ document.addEventListener('DOMContentLoaded', async function() {
                 warehouse_price: null,
                 competitor_price: null,
                 description: item.description || '',
-                category: item.category || getCategoryFromLotName(item.lot_name)
-            }));
+                category: item.category            }));
         }
         serverModelForQuote = config.server_model || '';
         supportCode = config.support_code || '';
@@ -861,6 +953,10 @@ document.addEventListener('DOMContentLoaded', async function() {
         loadAllComponents(),
         categoriesPromise,
     ]);
+    cart = cart.map(item => ({
+        ...item,
+        category: item.category || allComponents.find(c => c.lot_name.toUpperCase() === (item.lot_name || '').toUpperCase())?.category || ''
+    }));
     syncPriceSettingsControls();
     renderPricelistSettingsSummary();
     updateRefreshPricesButtonState();
@@ -879,6 +975,12 @@ document.addEventListener('DOMContentLoaded', async function() {
         }
     });
 
+    // Save pricing state (ручная цена) on page exit so it survives navigation
+    window.addEventListener('pagehide', saveConfigOnExit);
+    document.addEventListener('visibilitychange', () => {
+        if (document.visibilityState === 'hidden') saveConfigOnExit();
+    });
+
     // Load vendor spec BOM for this configuration
     if (configUUID) {
         loadVendorSpec(configUUID);
@@ -904,7 +1006,7 @@ const BOM_LOT_DATALIST_DIVIDER = '────────';
 function _bomLotValid(v) {
     const lot = (v || '').trim();
     if (!lot || lot === BOM_LOT_DATALIST_DIVIDER) return false;
-    return (window._bomAllComponents || allComponents).some(c => c.lot_name === lot);
+    return (window._bomAllComponents || allComponents).some(c => c.lot_name.toUpperCase() === lot.toUpperCase());
 }
 
 function updateServerCount() {
@@ -1120,19 +1222,16 @@ function applyPriceSettings() {
     schedulePriceLevelsRefresh({ delay: 0, rerender: true, autosave: true });
 }
 
-function getCategoryFromLotName(lotName) {
-    const parts = lotName.split('_');
-    return parts[0] || '';
-}
+function ciStr(s) { return (s || '').toLowerCase(); }
 
 function getComponentCategory(comp) {
-    return (comp.category || getCategoryFromLotName(comp.lot_name)).toUpperCase();
+    return comp.category || '';
 }
 
 function getTabForCategory(category) {
-    const cat = category.toUpperCase();
+    const cat = ciStr(category);
     for (const [tabKey, tabConfig] of Object.entries(TAB_CONFIG)) {
-        if (tabConfig.categories.map(c => c.toUpperCase()).includes(cat)) {
+        if (tabConfig.categories.some(c => ciStr(c) === cat)) {
             return tabKey;
         }
     }
@@ -1154,77 +1253,78 @@ function switchTab(tab) {
     renderTab();
 }
 
+// Hardcoded fallback constants — used only when server has not provided config_types data
 const ALWAYS_VISIBLE_TABS = new Set(['base', 'storage', 'pci']);
-
-// Storage-only categories — hidden for server configs
 const STORAGE_ONLY_BASE_CATEGORIES = ['DKC', 'CTL', 'ENC'];
-// Server-only categories — hidden for storage configs
-const SERVER_ONLY_BASE_CATEGORIES = ['MB', 'CPU', 'MEM'];
+const SERVER_ONLY_BASE_CATEGORIES  = ['MB', 'CPU', 'MEM'];
 const STORAGE_HIDDEN_STORAGE_CATEGORIES = ['RAID'];
 const STORAGE_HIDDEN_PCI_CATEGORIES = ['GPU', 'DPU'];
 const STORAGE_HIDDEN_POWER_CATEGORIES = ['PS', 'PSU'];
 
+function isCategoryVisibleForConfigType(code, cfgType) {
+    const allowed = configTypeCategoryMap[cfgType];
+    if (!allowed || allowed.size === 0) return _hardcodedCategoryVisible(code, cfgType);
+    return allowed.has(code.toUpperCase());
+}
+
+function _hardcodedCategoryVisible(code, cfgType) {
+    if (cfgType === 'storage') {
+        if (STORAGE_ONLY_BASE_CATEGORIES.includes(code)) return true;
+        if (SERVER_ONLY_BASE_CATEGORIES.includes(code)) return false;
+        if (STORAGE_HIDDEN_STORAGE_CATEGORIES.includes(code)) return false;
+        if (STORAGE_HIDDEN_PCI_CATEGORIES.includes(code)) return false;
+        if (STORAGE_HIDDEN_POWER_CATEGORIES.includes(code)) return false;
+    } else {
+        if (STORAGE_ONLY_BASE_CATEGORIES.includes(code)) return false;
+    }
+    return true;
+}
+
+function _effectiveAlwaysVisibleTabs() {
+    return alwaysVisibleTabsSet || ALWAYS_VISIBLE_TABS;
+}
+
 function applyConfigTypeToTabs() {
-    const baseCategories = ['MB', 'CPU', 'MEM', 'DKC', 'CTL', 'ENC'];
-    const storageCategories = ['RAID', 'M2', 'SSD', 'HDD', 'EDSFF', 'HHHL'];
-    const storageSections = [
-        { title: 'RAID Контроллеры', categories: ['RAID'] },
-        { title: 'Диски', categories: ['M2', 'SSD', 'HDD', 'EDSFF', 'HHHL'] }
-    ];
-    const pciCategories = ['GPU', 'DPU', 'NIC', 'HCA', 'HBA', 'HIC'];
-    const pciSections = [
-        { title: 'GPU / DPU', categories: ['GPU', 'DPU'] },
-        { title: 'NIC / HCA', categories: ['NIC', 'HCA'] },
-        { title: 'HBA', categories: ['HBA'] },
-        { title: 'HIC', categories: ['HIC'] }
-    ];
-    const powerCategories = ['PS', 'PSU'];
+    // Filter each tab's categories by visibility for current configType.
+    // Uses server-driven allowlists when available; falls back to hardcoded constants.
+    Object.keys(TAB_CONFIG).forEach(tabKey => {
+        if (tabKey === 'other') return;
+        const tab = TAB_CONFIG[tabKey];
+        if (!tab || !Array.isArray(tab.categories)) return;
 
-    TAB_CONFIG.base.categories = baseCategories.filter(c => {
-        if (configType === 'storage') {
-            return !SERVER_ONLY_BASE_CATEGORIES.includes(c);
+        // Snapshot the full category list for this tab (stored in _allCategories if not yet saved)
+        if (!tab._allCategories) tab._allCategories = [...tab.categories];
+
+        tab.categories = tab._allCategories.filter(c => isCategoryVisibleForConfigType(c, configType));
+
+        if (Array.isArray(tab._allSections || tab.sections)) {
+            const allSections = tab._allSections || tab.sections;
+            if (!tab._allSections) tab._allSections = allSections.map(s => ({ ...s, categories: [...s.categories] }));
+            tab.sections = tab._allSections
+                .map(section => ({
+                    ...section,
+                    categories: section.categories.filter(c => isCategoryVisibleForConfigType(c, configType))
+                }))
+                .filter(section => section.categories.length > 0);
         }
-        return !STORAGE_ONLY_BASE_CATEGORIES.includes(c);
     });
 
-    TAB_CONFIG.storage.categories = storageCategories.filter(c => {
-        return configType === 'storage' ? !STORAGE_HIDDEN_STORAGE_CATEGORIES.includes(c) : true;
-    });
-    TAB_CONFIG.storage.sections = storageSections.filter(section => {
-        if (configType === 'storage') {
-            return !section.categories.every(cat => STORAGE_HIDDEN_STORAGE_CATEGORIES.includes(cat));
-        }
-        return true;
-    });
-
-    TAB_CONFIG.pci.categories = pciCategories.filter(c => {
-        return configType === 'storage' ? !STORAGE_HIDDEN_PCI_CATEGORIES.includes(c) : c !== 'HIC';
-    });
-    TAB_CONFIG.pci.sections = pciSections.filter(section => {
-        if (configType === 'storage') {
-            return !section.categories.every(cat => STORAGE_HIDDEN_PCI_CATEGORIES.includes(cat));
-        }
-        return section.title !== 'HIC';
-    });
-    TAB_CONFIG.power.categories = powerCategories.filter(c => {
-        return configType === 'storage' ? !STORAGE_HIDDEN_POWER_CATEGORIES.includes(c) : true;
-    });
-
-    // Rebuild assigned categories index
+    // Rebuild assigned categories index using the full static list (_allCategories),
+    // not the filtered one — hidden categories still belong to their tab, not to Other.
     ASSIGNED_CATEGORIES = Object.values(TAB_CONFIG)
-        .flatMap(t => t.categories)
-        .map(c => c.toUpperCase());
+        .flatMap(t => t._allCategories || t.categories)
+        .map(c => ciStr(c));
 }
 
 function updateTabVisibility() {
+    const visibleTabs = _effectiveAlwaysVisibleTabs();
     for (const tabId of Object.keys(TAB_CONFIG)) {
-        if (ALWAYS_VISIBLE_TABS.has(tabId)) continue;
+        if (visibleTabs.has(tabId)) continue;
         const btn = document.querySelector(`[data-tab="${tabId}"]`);
         if (!btn) continue;
         const hasComponents = getComponentsForTab(tabId).length > 0;
         const hasCartItems = cart.some(item => {
-            const cat = (item.category || getCategoryFromLotName(item.lot_name) || '').toUpperCase();
-            return getTabForCategory(cat) === tabId;
+            return getTabForCategory(item.category) === tabId;
         });
         const visible = hasComponents || hasCartItems;
         btn.classList.toggle('hidden', !visible);
@@ -1240,15 +1340,15 @@ function getComponentsForTab(tab) {
     return allComponents.filter(comp => {
         const category = getComponentCategory(comp);
         if (tab === 'other') {
-            return !ASSIGNED_CATEGORIES.includes(category);
+            return !ASSIGNED_CATEGORIES.includes(ciStr(category));
         }
-        return config.categories.map(c => c.toUpperCase()).includes(category);
+        return config.categories.some(c => ciStr(c) === ciStr(category));
     });
 }
 
 function getComponentsForCategory(category) {
     return allComponents.filter(comp => {
-        return getComponentCategory(comp) === category.toUpperCase();
+        return ciStr(getComponentCategory(comp)) === ciStr(category);
     });
 }
 
@@ -1310,10 +1410,10 @@ function renderSingleSelectTab(categories) {
     categories.forEach(cat => {
         const catLabel = cat === 'MB' ? 'MB' : cat === 'CPU' ? 'CPU' : cat === 'MEM' ? 'MEM' : cat;
         const selectedItem = cart.find(item =>
-            (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase() === cat.toUpperCase()
+            ciStr(item.category) === ciStr(cat)
         );
 
-        const comp = selectedItem ? allComponents.find(c => c.lot_name === selectedItem.lot_name) : null;
+        const comp = selectedItem ? allComponents.find(c => c.lot_name.toUpperCase() === (selectedItem.lot_name || '').toUpperCase()) : null;
         const price = comp?.current_price || 0;
         const estimate = selectedItem?.estimate_price ?? price;
         const qty = selectedItem?.quantity || 1;
@@ -1363,9 +1463,7 @@ function renderSingleSelectTab(categories) {
 function renderMultiSelectTab(components) {
     // Get cart items for this tab
     const tabItems = cart.filter(item => {
-        const cat = (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase();
-        const tab = getTabForCategory(cat);
-        return tab === currentTab;
+        return getTabForCategory(item.category) === currentTab;
     });
 
     let html = `
@@ -1385,7 +1483,7 @@ function renderMultiSelectTab(components) {
 
     // Render existing cart items for this tab
     tabItems.forEach((item, idx) => {
-        const comp = allComponents.find(c => c.lot_name === item.lot_name);
+        const comp = allComponents.find(c => c.lot_name.toUpperCase() === (item.lot_name || '').toUpperCase());
         const total = getDisplayPrice(item) * item.quantity;
 
         html += `
@@ -1452,9 +1550,7 @@ function renderMultiSelectTab(components) {
 function renderMultiSelectTabWithSections(sections) {
     // Get cart items for this tab
     const tabItems = cart.filter(item => {
-        const cat = (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase();
-        const tab = getTabForCategory(cat);
-        return tab === currentTab;
+        return getTabForCategory(item.category) === currentTab;
     });
 
     let html = '';
@@ -1462,17 +1558,14 @@ function renderMultiSelectTabWithSections(sections) {
 
     sections.forEach((section, sectionIdx) => {
         // Get components for this section's categories
-        const sectionCategories = section.categories.map(c => c.toUpperCase());
         const sectionComponents = allComponents.filter(comp => {
-            const category = getComponentCategory(comp);
-            return sectionCategories.includes(category);
+            return section.categories.some(c => ciStr(c) === ciStr(getComponentCategory(comp)));
         });
         totalComponents += sectionComponents.length;
 
         // Get cart items for this section
         const sectionItems = tabItems.filter(item => {
-            const cat = (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase();
-            return sectionCategories.includes(cat);
+            return section.categories.some(c => ciStr(c) === ciStr(item.category));
         });
 
         // Section header
@@ -1499,7 +1592,7 @@ function renderMultiSelectTabWithSections(sections) {
 
         // Render existing cart items for this section
         sectionItems.forEach((item) => {
-            const comp = allComponents.find(c => c.lot_name === item.lot_name);
+            const comp = allComponents.find(c => c.lot_name.toUpperCase() === (item.lot_name || '').toUpperCase());
             const total = getDisplayPrice(item) * item.quantity;
 
             html += `
@@ -1656,6 +1749,10 @@ function renderAutocomplete() {
 
     // Build autocomplete items based on mode
     dropdown.innerHTML = autocompleteFiltered.map((comp, idx) => {
+        if (comp.isDivider) {
+            return `<div class="px-3 py-1 text-xs text-gray-400 border-t border-gray-200 select-none cursor-default" style="pointer-events:none">── прочие ──</div>`;
+        }
+
         let onmousedown;
 
         if (autocompleteMode === 'section') {
@@ -1708,7 +1805,7 @@ function selectAutocompleteItem(index) {
 
     // Remove existing item of this category
     cart = cart.filter(item =>
-        (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase() !== autocompleteCategory.toUpperCase()
+        ciStr(item.category) !== ciStr(autocompleteCategory)
     );
 
     const qtyInput = document.getElementById('qty-' + autocompleteCategory);
@@ -1764,11 +1861,11 @@ function filterAutocompleteMulti(search) {
     const searchLower = search.toLowerCase();
 
     // Filter out already added items
-    const addedLots = new Set(cart.map(i => i.lot_name));
+    const addedLots = new Set(cart.map(i => (i.lot_name || '').toUpperCase()));
 
     autocompleteFiltered = components.filter(c => {
         if (!hasComponentPrice(c.lot_name)) return false;
-        if (addedLots.has(c.lot_name)) return false;
+        if (addedLots.has((c.lot_name || '').toUpperCase())) return false;
         if (!isComponentAllowedByStockFilter(c)) return false;
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
         return text.includes(searchLower);
@@ -1869,11 +1966,11 @@ function filterAutocompleteSection(sectionId, search, inputElement) {
     });
 
     // Filter out already added items
-    const addedLots = new Set(cart.map(i => i.lot_name));
+    const addedLots = new Set(cart.map(i => (i.lot_name || '').toUpperCase()));
 
     autocompleteFiltered = sectionComponents.filter(c => {
         if (!hasComponentPrice(c.lot_name)) return false;
-        if (addedLots.has(c.lot_name)) return false;
+        if (addedLots.has((c.lot_name || '').toUpperCase())) return false;
         if (!isComponentAllowedByStockFilter(c)) return false;
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
         return text.includes(searchLower);
@@ -2039,14 +2136,24 @@ function showAutocompleteBOM(rowIdx, input) {
 
 function filterAutocompleteBOM(rowIdx, search) {
     const searchLower = (search || '').toLowerCase();
-    autocompleteFiltered = (window._bomAllComponents || allComponents).filter(c => {
+    const cartLots = new Set(cart.map(i => (i.lot_name || '').toUpperCase()));
+    const all = (window._bomAllComponents || allComponents).filter(c => {
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
         return text.includes(searchLower);
-    }).sort((a, b) => {
-        const popDiff = (b.popularity_score || 0) - (a.popularity_score || 0);
-        if (popDiff !== 0) return popDiff;
-        return a.lot_name.localeCompare(b.lot_name);
     });
+    const inCart = all.filter(c => cartLots.has((c.lot_name || '').toUpperCase()))
+        .sort((a, b) => a.lot_name.localeCompare(b.lot_name));
+    const notInCart = all.filter(c => !cartLots.has((c.lot_name || '').toUpperCase()))
+        .sort((a, b) => {
+            const popDiff = (b.popularity_score || 0) - (a.popularity_score || 0);
+            if (popDiff !== 0) return popDiff;
+            return a.lot_name.localeCompare(b.lot_name);
+        });
+    if (inCart.length && notInCart.length) {
+        autocompleteFiltered = [...inCart, {isDivider: true}, ...notInCart];
+    } else {
+        autocompleteFiltered = [...inCart, ...notInCart];
+    }
     renderAutocomplete();
 }
 
@@ -2071,7 +2178,7 @@ function handleAutocompleteKeyBOM(event, rowIdx) {
 
 function selectAutocompleteItemBOM(index, rowIdx) {
     const comp = autocompleteFiltered[index];
-    if (!comp) return;
+    if (!comp || comp.isDivider) return;
     const row = bomRows.find(r => r.source_row_index === rowIdx) || bomRows[rowIdx];
     if (!row) return;
     row.manual_lot = comp.lot_name;
@@ -2081,7 +2188,7 @@ function selectAutocompleteItemBOM(index, rowIdx) {
 
 function clearSingleSelect(category) {
     cart = cart.filter(item =>
-        (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase() !== category.toUpperCase()
+        ciStr(item.category) !== ciStr(category)
     );
     renderTab();
     updateCartUI();
@@ -2091,7 +2198,7 @@ function clearSingleSelect(category) {
 function updateSingleQuantity(category, value) {
     const qty = parseInt(value) || 1;
     const item = cart.find(i =>
-        (i.category || getCategoryFromLotName(i.lot_name)).toUpperCase() === category.toUpperCase()
+        ciStr(i.category) === ciStr(category)
     );
 
     if (item) {
@@ -2131,6 +2238,7 @@ function removeFromCart(lotName) {
 
 function updateCartUI() {
     updateTabVisibility();
+    updateRequiredCategoryBadges();
     window._currentCart = cart; // expose for BOM/Pricing tabs
     const total = cart.reduce((sum, item) => sum + (getDisplayPrice(item) * item.quantity), 0);
     document.getElementById('cart-total').textContent = formatMoney(total);
@@ -2149,8 +2257,8 @@ function updateCartUI() {
 
     // Sort cart items by category display order
     const sortedCart = [...cart].sort((a, b) => {
-        const catA = (a.category || getCategoryFromLotName(a.lot_name)).toUpperCase();
-        const catB = (b.category || getCategoryFromLotName(b.lot_name)).toUpperCase();
+        const catA = ciStr(a.category);
+        const catB = ciStr(b.category);
         const orderA = categoryOrderMap[catA] || 9999;
         const orderB = categoryOrderMap[catB] || 9999;
         return orderA - orderB;
@@ -2158,8 +2266,7 @@ function updateCartUI() {
 
     const grouped = {};
     sortedCart.forEach(item => {
-        const cat = item.category || getCategoryFromLotName(item.lot_name);
-        const tab = getTabForCategory(cat);
+        const tab = getTabForCategory(item.category);
         if (!grouped[tab]) grouped[tab] = [];
         grouped[tab].push(item);
     });
@@ -2167,11 +2274,11 @@ function updateCartUI() {
     // Sort tabs by minimum display order of their categories
     const sortedTabs = Object.entries(grouped).sort((a, b) => {
         const minOrderA = Math.min(...a[1].map(item => {
-            const cat = (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase();
+            const cat = ciStr(item.category);
             return categoryOrderMap[cat] || 9999;
         }));
         const minOrderB = Math.min(...b[1].map(item => {
-            const cat = (item.category || getCategoryFromLotName(item.lot_name)).toUpperCase();
+            const cat = ciStr(item.category);
             return categoryOrderMap[cat] || 9999;
         }));
         return minOrderA - minOrderB;
@@ -2402,8 +2509,7 @@ function restoreAutosaveDraftIfAny() {
                 warehouse_price: null,
                 competitor_price: null,
                 description: item.description || '',
-                category: item.category || getCategoryFromLotName(item.lot_name)
-            }));
+                category: item.category            }));
         }
         if (typeof payload.server_count === 'number' && payload.server_count > 0) {
             serverCount = payload.server_count;
@@ -2426,6 +2532,9 @@ function restoreAutosaveDraftIfAny() {
                 customPriceInput.value = '';
             }
         }
+        if (payload.notes) {
+            restorePricingStateFromNotes(payload.notes);
+        }
         hasUnsavedChanges = true;
     } catch (_) {
         // ignore invalid draft
@@ -2620,8 +2729,8 @@ function renderSalePriceTable() {
     }
 
     const sortedCart = [...cart].sort((a, b) => {
-        const catA = (a.category || getCategoryFromLotName(a.lot_name)).toUpperCase();
-        const catB = (b.category || getCategoryFromLotName(b.lot_name)).toUpperCase();
+        const catA = ciStr(a.category);
+        const catB = ciStr(b.category);
         const orderA = categoryOrderMap[catA] || 9999;
         const orderB = categoryOrderMap[catB] || 9999;
         return orderA - orderB;
@@ -2724,8 +2833,8 @@ function calculateCustomPrice() {
     // Build adjusted prices table
     // Sort cart items by category display order
     const sortedCart = [...cart].sort((a, b) => {
-        const catA = (a.category || getCategoryFromLotName(a.lot_name)).toUpperCase();
-        const catB = (b.category || getCategoryFromLotName(b.lot_name)).toUpperCase();
+        const catA = ciStr(a.category);
+        const catB = ciStr(b.category);
         const orderA = categoryOrderMap[catA] || 9999;
         const orderB = categoryOrderMap[catB] || 9999;
         return orderA - orderB;
@@ -2857,6 +2966,15 @@ async function refreshPrices() {
         }
         beforeTotal *= serverCount;
 
+        // Create a revision of the current state before prices are updated
+        if (configUUID) {
+            try {
+                await fetch('/api/configs/' + configUUID + '/snapshot', { method: 'POST' });
+            } catch (e) {
+                console.warn('pre-refresh snapshot failed', e);
+            }
+        }
+
         await saveConfig(false);
         await refreshPriceLevels({ force: true, noCache: true });
         renderTab();
@@ -3209,7 +3327,7 @@ function _bomRawLotCell(rowIdx) {
     cart.forEach(item => { cartMap[item.lot_name] = item.quantity; });
     const isUnresolved = !map.resolved_lot || map.resolution_source === 'unresolved';
     const cartQty = map.resolved_lot ? (cartMap[map.resolved_lot] ?? null) : null;
-    const qtyMismatch = cartQty !== null && cartQty !== map.quantity;
+    const qtyMismatch = cartQty !== null && cartQty !== map.quantity * _getRowLotQtyPerPN(map);
     const notInCart = map.resolved_lot && cartQty === null;
 
     if (isUnresolved) {
@@ -3595,7 +3713,7 @@ function _renderBOMParsedTable() {
         const tr = document.createElement('tr');
         const isUnresolved = !row.resolved_lot || row.resolution_source === 'unresolved';
         const cartQty = row.resolved_lot ? (cartMap[row.resolved_lot] ?? null) : null;
-        const qtyMismatch = cartQty !== null && cartQty !== row.quantity;
+        const qtyMismatch = cartQty !== null && cartQty !== row.quantity * _getRowLotQtyPerPN(row);
         const notInCart = row.resolved_lot && cartQty === null;
         if (isUnresolved) unresolved++;
         if (qtyMismatch || notInCart) mismatches++;
@@ -3662,7 +3780,7 @@ function _renderBOMRawTable() {
         else if (parsed) {
             const isUnresolved = !parsed.resolved_lot || parsed.resolution_source === 'unresolved';
             const cartQty = parsed.resolved_lot ? (cartMap[parsed.resolved_lot] ?? null) : null;
-            const qtyMismatch = cartQty !== null && cartQty !== parsed.quantity;
+            const qtyMismatch = cartQty !== null && cartQty !== parsed.quantity * _getRowLotQtyPerPN(parsed);
             const notInCart = parsed.resolved_lot && cartQty === null;
             if (isUnresolved) unresolved++;
             if (qtyMismatch || notInCart) mismatches++;
@@ -3930,6 +4048,9 @@ async function renderPricingTab() {
     };
 
     // Collect LOTs to price: from BOM rows (resolved) or from cart
+    // Use cart quantity when available (source of truth); fall back to BOM-computed quantity.
+    const _cartQtyMap = {};
+    cart.forEach(item => { if (item?.lot_name) _cartQtyMap[item.lot_name] = item.quantity; });
     let itemsForPriceLevels = [];
     if (bomRows.length) {
         const seen = new Set();
@@ -3938,13 +4059,13 @@ async function renderPricingTab() {
             const allocs = _getRowAllocations(row).filter(a => a.lot_name && _bomLotValid(a.lot_name) && a.quantity >= 1);
             if (baseLot && !seen.has(baseLot)) {
                 seen.add(baseLot);
-                itemsForPriceLevels.push({ lot_name: baseLot, quantity: row.quantity * _getRowLotQtyPerPN(row) });
+                itemsForPriceLevels.push({ lot_name: baseLot, quantity: _cartQtyMap[baseLot] ?? (row.quantity * _getRowLotQtyPerPN(row)) });
             }
             if (allocs.length) {
                 allocs.forEach(a => {
                     if (!seen.has(a.lot_name)) {
                         seen.add(a.lot_name);
-                        itemsForPriceLevels.push({ lot_name: a.lot_name, quantity: row.quantity * a.quantity });
+                        itemsForPriceLevels.push({ lot_name: a.lot_name, quantity: _cartQtyMap[a.lot_name] ?? (row.quantity * a.quantity) });
                     }
                 });
             }
@@ -3997,6 +4118,8 @@ async function renderPricingTab() {
 
     // ─── Build shared row data (unit prices for display, totals for math) ────
     // Each BOM row is exploded into per-LOT sub-rows; grouped by vendor PN via groupStart/groupSize.
+    const cartQtyMap = {};
+    cart.forEach(item => { if (item?.lot_name) cartQtyMap[item.lot_name] = item.quantity; });
     const _buildRows = () => {
         const result = [];
         const coveredLots = new Set();
@@ -4020,7 +4143,12 @@ async function renderPricingTab() {
         };
 
         if (!bomRows.length) {
-            cart.forEach(item => { _pushCartRow(item, false); coveredLots.add(item.lot_name); });
+            const sortedByCategory = [...cart].sort((a, b) => {
+                const catA = ciStr(a.category);
+                const catB = ciStr(b.category);
+                return (categoryOrderMap[catA] || 9999) - (categoryOrderMap[catB] || 9999);
+            });
+            sortedByCategory.forEach(item => { _pushCartRow(item, false); coveredLots.add(item.lot_name); });
             return { result, coveredLots };
         }
 
@@ -4041,7 +4169,7 @@ async function renderPricingTab() {
             if (baseLot) {
                 const u = _getUnitPrices(priceMap[baseLot]);
                 const lotQty = _getRowLotQtyPerPN(row);
-                const qty = row.quantity * lotQty;
+                const qty = cartQtyMap[baseLot] ?? (row.quantity * lotQty);
                 subRows.push({
                     lotCell: escapeHtml(baseLot), lotText: baseLot, qty,
                     estUnit: u.estUnit > 0 ? u.estUnit : 0,
@@ -4053,7 +4181,7 @@ async function renderPricingTab() {
             }
             allocs.forEach(a => {
                 const u = _getUnitPrices(priceMap[a.lot_name]);
-                const qty = row.quantity * a.quantity;
+                const qty = cartQtyMap[a.lot_name] ?? (row.quantity * a.quantity);
                 subRows.push({
                     lotCell: escapeHtml(a.lot_name), lotText: a.lot_name, qty,
                     estUnit: u.estUnit > 0 ? u.estUnit : 0,
@@ -4374,6 +4502,8 @@ function setPricingCustomPriceFromVendor() {
 async function exportPricingCSV(table) {
     if (!configUUID) { showToast('Сохраните конфигурацию перед экспортом', 'error'); return; }
     const basis = table === 'sale' ? 'ddp' : 'fob';
+    const manualInputId = table === 'sale' ? 'pricing-custom-price-sale' : 'pricing-custom-price-buy';
+    const manualPrice = parseDecimalInput(document.getElementById(manualInputId)?.value || '');
     try {
         const resp = await fetch(`/api/configs/${configUUID}/export/pricing`, {
             method: 'POST',
@@ -4385,6 +4515,7 @@ async function exportPricingCSV(table) {
                 include_stock: true,
                 include_competitor: true,
                 basis: basis,
+                manual_price: manualPrice > 0 ? manualPrice : null,
             }),
         });
         if (!resp.ok) { showToast('Ошибка экспорта', 'error'); return; }

web/templates/partnumber_books.html

@@ -1,4 +1,4 @@
-{{define "title"}}OFS - Партномера{{end}}
+{{define "title"}}QFS Партномера{{end}}
 
 {{define "content"}}
 <div class="space-y-4">
@@ -22,20 +22,17 @@
     </div>
 
     <div id="summary-empty" class="hidden bg-yellow-50 border border-yellow-200 rounded-lg p-4 text-sm text-yellow-800">
-        Нет активного листа сопоставлений. Нажмите «Синхронизировать» для загрузки с сервера.
+        Нет активного листа сопоставлений. Книги загружаются автоматически вместе с прайслистами.
     </div>
 
     <!-- All books list (collapsed by default) -->
     <div class="bg-white rounded-lg shadow overflow-hidden">
         <!-- Header row — always visible -->
-        <div class="px-4 py-3 flex items-center justify-between">
+        <div class="px-4 py-3">
             <button onclick="toggleBooksSection()" class="flex items-center gap-2 text-sm font-semibold text-gray-800 hover:text-gray-600 select-none">
                 <svg id="books-chevron" class="w-4 h-4 text-gray-400 transition-transform duration-150" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7"/></svg>
                 Снимки сопоставлений (Partnumber Books)
             </button>
-            <button onclick="syncPartnumberBooks()" class="px-4 py-2 bg-orange-500 text-white rounded hover:bg-orange-600 text-sm font-medium">
-                Синхронизировать
-            </button>
         </div>
         <!-- Collapsible body -->
         <div id="books-section-body" class="hidden border-t">
@@ -69,7 +66,7 @@
     <div id="active-book-section" class="hidden bg-white rounded-lg shadow overflow-hidden">
         <div class="px-4 py-3 border-b flex items-center justify-between gap-3">
             <span class="font-semibold text-gray-800 whitespace-nowrap">Сопоставления активного листа</span>
-            <input type="text" id="pn-search" placeholder="Поиск по PN или LOT..."
+            <input type="text" id="pn-search" placeholder="Поиск по PN, LOT или описанию..."
                    class="flex-1 max-w-xs px-3 py-1.5 border rounded text-sm focus:ring-2 focus:ring-blue-400 focus:outline-none"
                    oninput="onItemsSearchInput(this.value)">
             <span id="pn-count" class="text-xs text-gray-400 whitespace-nowrap"></span>

web/templates/pricelist_detail.html

@@ -1,4 +1,4 @@
-{{define "title"}}Прайслист - OFS{{end}}
+{{define "title"}}QFS Прайслист{{end}}
 
 {{define "content"}}
 <div class="space-y-6">

web/templates/pricelists.html

@@ -1,4 +1,4 @@
-{{define "title"}}Прайслисты - OFS{{end}}
+{{define "title"}}QFS Прайслисты{{end}}
 
 {{define "content"}}
 <div class="space-y-6">

web/templates/project_detail.html

@@ -1,4 +1,4 @@
-{{define "title"}}Проект - OFS{{end}}
+{{define "title"}}QFS Проект{{end}}
 
 {{define "content"}}
 <div class="space-y-4">
@@ -207,9 +207,11 @@
             </div>
             <div>
                 <label for="new-variant-value" class="block text-sm font-medium text-gray-700 mb-1">Вариант</label>
-                <input id="new-variant-value" type="text" placeholder="Например: Lenovo"
+                <input id="new-variant-value" type="text" placeholder="Например: B200"
+                       pattern="[A-Za-z0-9._-]+"
+                       title="Только буквы, цифры, дефис, точка, подчёркивание"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
-                <div class="text-xs text-gray-500 mt-1">Оставьте пустым для main нельзя — нужно уникальное значение.</div>
+                <div class="text-xs text-gray-500 mt-1">Буквы, цифры, дефис, точка, подчёркивание. Используется в URL: /КОД/Вариант.</div>
             </div>
         </div>
         <div class="mt-6 flex justify-end gap-2">
@@ -842,6 +844,10 @@ async function createNewVariant() {
         showToast('Укажите вариант', 'error');
         return;
     }
+    if (!/^[A-Za-z0-9._-]+$/.test(variant)) {
+        showToast('Имя варианта содержит недопустимые символы. Разрешены: буквы, цифры, дефис, точка, подчёркивание.', 'error');
+        return;
+    }
     const payload = {
         code: code,
         variant: variant,

web/templates/projects.html

@@ -1,4 +1,4 @@
-{{define "title"}}Мои проекты - OFS{{end}}
+{{define "title"}}QFS Мои проекты{{end}}
 
 {{define "content"}}
 <div class="space-y-4">
@@ -39,12 +39,18 @@
             <div>
                 <label for="create-project-code" class="block text-sm font-medium text-gray-700 mb-1">Код проекта</label>
                 <input id="create-project-code" type="text" placeholder="Например: OPS-123"
+                       pattern="[A-Za-z0-9._-]+"
+                       title="Только буквы, цифры, дефис, точка, подчёркивание"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <p class="text-xs text-gray-400 mt-1">Буквы, цифры, дефис, точка, подчёркивание. Код используется в URL.</p>
             </div>
             <div>
                 <label for="create-project-variant" class="block text-sm font-medium text-gray-700 mb-1">Вариант (необязательно)</label>
-                <input id="create-project-variant" type="text" placeholder="Например: Lenovo"
+                <input id="create-project-variant" type="text" placeholder="Например: B200"
+                       pattern="[A-Za-z0-9._-]*"
+                       title="Только буквы, цифры, дефис, точка, подчёркивание"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <p class="text-xs text-gray-400 mt-1">Используется в URL: /КОД/Вариант</p>
             </div>
             <div>
                 <label for="create-project-tracker-url" class="block text-sm font-medium text-gray-700 mb-1">Ссылка на трекер</label>
@@ -396,6 +402,14 @@ async function createProject() {
         alert('Введите код проекта');
         return;
     }
+    if (!/^[A-Za-z0-9._-]+$/.test(code)) {
+        alert('Код проекта содержит недопустимые символы.\nРазрешены: буквы, цифры, дефис, точка, подчёркивание.');
+        return;
+    }
+    if (variant && !/^[A-Za-z0-9._-]+$/.test(variant)) {
+        alert('Имя варианта содержит недопустимые символы.\nРазрешены: буквы, цифры, дефис, точка, подчёркивание.');
+        return;
+    }
     const resp = await fetch('/api/projects', {
         method: 'POST',
         headers: {'Content-Type': 'application/json'},
@@ -411,6 +425,11 @@ async function createProject() {
             alert('Проект с таким кодом и вариантом уже существует');
             return;
         }
+        if (resp.status === 400) {
+            const body = await resp.json().catch(() => ({}));
+            alert(body.error || 'Некорректный запрос');
+            return;
+        }
         alert('Не удалось создать проект');
         return;
     }