Update bible: competitors API endpoints and pricelist deletion/competitor sections

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

bible-local/api.md

@@ -10,6 +10,7 @@
 | GET | `/pricelists` | Pricelists | Pricelist listing |
 | GET | `/pricelists/:id` | PricelistDetail | Single pricelist view |
 | GET | `/vendor-mappings` | VendorMappings | Vendor mapping UI |
+| GET | `/admin/competitors` | Competitors | Competitor management UI |
 | GET | `/partials/components` | ComponentsPartial | Components partial |
 | GET/POST | `/setup` | Setup | DB connection setup |
 
@@ -71,6 +72,22 @@
 
 ---
 
+## Competitors (`/api/competitors/*`)
+
+| Method | URL | Description |
+|--------|-----|-------------|
+| GET | `/api/competitors` | List all competitors with unique p/n + total quote counts |
+| POST | `/api/competitors` | Create competitor |
+| GET | `/api/competitors/:id` | Get competitor by ID |
+| PUT | `/api/competitors/:id` | Update competitor (name, delivery_basis, currency, discount, column_mapping) |
+| DELETE | `/api/competitors/:id` | Delete competitor |
+| PATCH | `/api/competitors/:id/active` | Set is_active |
+| POST | `/api/competitors/:id/import` | Import Excel quote file (returns task_id, type: `competitor_import`) |
+| POST | `/api/competitors/pricelist` | Rebuild combined competitor pricelist from all stored quotes (returns task_id) |
+| POST | `/api/competitors/parse-headers` | Parse XLSX headers/preview for column mapping UI |
+
+---
+
 ## Tasks (polling)
 
 | Method | URL | Description |

bible-local/pricelist.md

@@ -129,3 +129,22 @@ Task type: `TaskTypePricelistCreate`.
 - Service: `internal/services/pricelist/service.go`
 - Warehouse calc: `internal/warehouse/snapshot.go`
 - Handler: `internal/handlers/pricelist.go`
+
+---
+
+## Pricelist Deletion Guard
+
+`CountUsage(id)` checks `qt_configurations` for references across **all three** pricelist columns:
+`pricelist_id`, `warehouse_pricelist_id`, `competitor_pricelist_id`.
+
+A pricelist is only deletable when all three counts are zero.
+
+---
+
+## Competitor Pricelist
+
+- **Source**: `competitor`
+- **Rebuilt via**: `POST /api/competitors/pricelist` (task type: `competitor_import`)
+- **Logic**: Latest quote per `(competitor_id, partnumber)` across ALL active competitors → apply each competitor's `expected_discount_pct` → `weighted_median` per lot → insert into `qt_pricelist_items`
+- **price_method**: `weighted_median`, **price_period_days**: `0`
+- Quotes stored in `partnumber_log_competitors`; unmapped p/ns recorded in `qt_vendor_partnumber_seen` with `source_type = 'competitor:<code>'`