Opción C: Vinculación híbrida de inventario local con vehículos

- Nueva tabla inventory_vehicle_compat (v3.1)
- Motor inventory_vehicle_compat.py: auto-match + gestión manual
- catalog_service.get_parts_local() ahora incluye piezas locales vinculadas
- inventory_bp: auto-match en create/update + endpoints REST /vehicles
- Frontend catalog.js: badge 'Stock Local' para piezas nativas del tenant
- Frontend inventory.js: panel de vehículos compatibles con auto-match
- Tests: test_compatibility.py (9/9 pasan)

Piezas locales aparecen en navegación por vehículo aunque no estén en TecDoc.
Auto-match busca part_number en parts/aftermarket_parts y copia MYEs compatibles.

pos/migrations/runner.py

@@ -31,6 +31,7 @@ MIGRATIONS = {
     'v2.8': 'v2.8_savings.sql',
     'v2.9': 'v2.9_logistics.sql',
     'v3.0': 'v3.0_public_api.sql',
+    'v3.1': 'v3.1_inventory_vehicle_compat.sql',
 }
 
 

pos/migrations/v3.1_inventory_vehicle_compat.sql

@@ -0,0 +1,34 @@
+-- v3.1 Inventory Vehicle Compatibility
+-- Links local inventory items to vehicles for Local catalog browsing.
+
+CREATE TABLE IF NOT EXISTS inventory_vehicle_compat (
+    id SERIAL PRIMARY KEY,
+    inventory_id INTEGER NOT NULL REFERENCES inventory(id) ON DELETE CASCADE,
+    model_year_engine_id INTEGER NOT NULL,
+    source VARCHAR(20) DEFAULT 'manual', -- 'auto_match', 'manual', 'import'
+    confidence NUMERIC(4,3) DEFAULT 1.0, -- auto-match confidence (0-1)
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    UNIQUE(inventory_id, model_year_engine_id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_ivc_inventory ON inventory_vehicle_compat(inventory_id);
+CREATE INDEX IF NOT EXISTS idx_ivc_mye ON inventory_vehicle_compat(model_year_engine_id);
+
+-- View to easily query compatibility with vehicle details (join with master DB in app)
+CREATE OR REPLACE VIEW v_inventory_vehicle_compat AS
+SELECT
+    ivc.id,
+    ivc.inventory_id,
+    ivc.model_year_engine_id,
+    ivc.source,
+    ivc.confidence,
+    ivc.created_at,
+    i.part_number,
+    i.name as item_name,
+    i.brand as item_brand,
+    i.price_1,
+    i.price_2,
+    i.price_3,
+    i.image_url
+FROM inventory_vehicle_compat ivc
+JOIN inventory i ON i.id = ivc.inventory_id;