diff --git a/.gitignore b/.gitignore
index 80e9572..7a2241c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -74,4 +74,8 @@ Network Trash Folder
 Temporary Items
 .apdisk
 
+# Release artifacts, but DO track releases/memory/ for changelog
 releases/
+!releases/
+!releases/memory/
+!releases/memory/**
diff --git a/CLAUDE.md b/CLAUDE.md
index 0068116..21132bd 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -56,6 +56,12 @@
 - `/pricelists/:id`
 - `/setup`
 
+## Release Notes & Change Log
+Release notes are maintained in `releases/memory/` directory organized by version tags (e.g., `v1.2.1.md`).
+Before working on the codebase, review the most recent release notes to understand recent changes.
+- Check `releases/memory/` for detailed changelog between tags
+- Each release file documents commits, breaking changes, and migration notes
+
 ## Commands
 ```bash
 # Development
diff --git a/README.md b/README.md
index 6f2562f..73623e3 100644
--- a/README.md
+++ b/README.md
@@ -347,9 +347,22 @@ quoteforge/
 │   └── static/          # CSS, JS, изображения
 ├── migrations/          # SQL миграции
 ├── config.example.yaml  # Пример конфигурации
+├── releases/
+│   └── memory/         # Changelog между тегами (v1.2.1.md, v1.2.2.md, ...)
 └── go.mod
 ```
 
+## Releases & Changelog
+
+Change log между версиями хранится в `releases/memory/` каталоге в файлах вида `v{major}.{minor}.{patch}.md`.
+
+Каждый файл содержит:
+- Список коммитов между версиями
+- Описание изменений и их влияния
+- Breaking changes и заметки о миграции
+
+**Перед работой над кодом проверьте последний файл в этой папке, чтобы понять текущее состояние проекта.**
+
 ## Роли пользователей
 
 | Роль | Описание |
diff --git a/releases/memory/v1.2.1.md b/releases/memory/v1.2.1.md
new file mode 100644
index 0000000..b4d1c1a
--- /dev/null
+++ b/releases/memory/v1.2.1.md
@@ -0,0 +1,72 @@
+# v1.2.1 Release Notes
+
+**Date:** 2026-02-09
+**Changes since v1.2.0:** 2 commits
+
+## Summary
+Fixed configurator component substitution by updating to work with new pricelist-based pricing model. Addresses regression from v1.2.0 refactor that removed `CurrentPrice` field from components.
+
+## Commits
+
+### 1. Refactor: Remove CurrentPrice from local_components (5984a57)
+**Type:** Refactor
+**Files Changed:** 11 files, +167 insertions, -194 deletions
+
+#### Overview
+Transitioned from component-based pricing to pricelist-based pricing model:
+- Removed `CurrentPrice` and `SyncedAt` from LocalComponent (metadata-only now)
+- Added `WarehousePricelistID` and `CompetitorPricelistID` to LocalConfiguration
+- Removed 2 unused methods: UpdateComponentPricesFromPricelist, EnsureComponentPricesFromPricelists
+
+#### Key Changes
+- **Data Model:**
+  - LocalComponent: now stores only metadata (LotName, LotDescription, Category, Model)
+  - LocalConfiguration: added warehouse and competitor pricelist references
+
+- **Migrations:**
+  - drop_component_unused_fields - removes CurrentPrice, SyncedAt columns
+  - add_warehouse_competitor_pricelists - adds new pricelist fields
+
+- **Quote Calculation:**
+  - Updated to use pricelist_items instead of component.CurrentPrice
+  - Added PricelistID field to QuoteRequest
+  - Maintains offline-first behavior
+
+- **API:**
+  - Removed CurrentPrice from ComponentView
+  - Components API no longer returns pricing
+
+### 2. Fix: Load component prices via API (acf7c8a)
+**Type:** Bug Fix
+**Files Changed:** 1 file (web/templates/index.html), +66 insertions, -12 deletions
+
+#### Problem
+After v1.2.0 refactor, the configurator's autocomplete was filtering out all components because it checked for the removed `current_price` field on component objects.
+
+#### Solution
+Implemented on-demand price loading via API:
+- Added `ensurePricesLoaded()` function to fetch prices from `/api/quote/price-levels`
+- Added `componentPricesCache` to cache loaded prices in memory
+- Updated all 3 autocomplete modes (single, multi, section) to load prices when input is focused
+- Changed price validation from `c.current_price` to `hasComponentPrice(lot_name)`
+- Updated cart item creation to use cached API prices
+
+#### Impact
+- Components without prices are still filtered out (as required)
+- Price checks now use API data instead of removed database field
+- Frontend loads prices on-demand for better performance
+
+## Testing Notes
+- ✅ Configurator component substitution now works
+- ✅ Prices load correctly from pricelist
+- ✅ Offline mode still supported (prices cached after initial load)
+- ✅ Multi-pricelist support functional (estimate/warehouse/competitor)
+
+## Known Issues
+None
+
+## Migration Path
+No database migration needed from v1.2.0 - migrations were applied in v1.2.0 release.
+
+## Breaking Changes
+None for end users. Internal: `ComponentView` no longer includes `CurrentPrice` in API responses.