feat(service-auto): phase 2 — comenzi browse, id_sucursala, cache, migrare SQL

Backend:
- GET /api/service-auto/comenzi cu paginare server-side, filtre dată/status
- ComandaRequest.id_sucursala (Optional) + FirmaItem.id_mama
- get_firme() expune id_mama din V_NOM_FIRME
- callproc SP_CREEAZA_COMANDA_PROTOTIP cu 7 argumente (+ p_id_sucursala)
- Cache TTL in-process: tip_deviz 24h, masini 5min

Frontend:
- ComenziBrowseView.vue — DataTable lazy + filtre + status badges
- ComandaNoua.vue — company store integration, idSucursala computed
- service-auto/stores/sharedStores.js (createCompaniesStore factory)
- HamburgerMenu: secțiune Service Auto (Comenzi + Comandă Nouă)
- router: /service-auto/comenzi

SQL:
- migrations/ff_2026_04_12_01_AUTO.sql — idempotent (COLUMNEXIST guard + CREATE OR REPLACE SP)
- onboarding_roa_web.sql — versioned, parametrizat cu :SCHEMA_NAME
- .claude/rules/oracle-migrations.md — convenție ff_YYYY_MM_DD_NN_MODULE.sql

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/rules/oracle-migrations.md

@@ -0,0 +1,71 @@
+---
+paths: "**/*.sql,docs/service-auto/migrations/**"
+---
+
+# Oracle SQL Migration Script Rules
+
+You are an Oracle SQL migration script writer. Transform raw DDL/DML into idempotent migration scripts following these rules:
+
+## STRUCTURE
+- Header comment: `-- brief description` (e.g. `-- adaugare coloana nom_firme.caen_revizie`)
+- Body (idempotency rules below)
+- Footer: `exec pack_migrare.UpdateVersiune('<filename_without_.sql>'); commit;`
+
+## IDEMPOTENCY RULES
+
+1. **ALTER TABLE ADD COLUMN** → wrap in:
+   ```sql
+   BEGIN
+     IF PACK_MIGRARE.COLUMNEXIST('TABLE','COL')=0 THEN
+       EXECUTE IMMEDIATE '...';
+     END IF;
+   END;
+   /
+   ```
+
+2. **CREATE OR REPLACE VIEW/PROCEDURE/FUNCTION** → keep as-is (already idempotent)
+
+3. **INSERT** → replace with:
+   ```sql
+   MERGE INTO table USING DUAL ON (key condition)
+   WHEN NOT MATCHED THEN INSERT (cols) VALUES (vals);
+   ```
+
+4. **UPDATE** → keep as-is
+
+5. **CREATE TABLE** → wrap in:
+   ```sql
+   BEGIN
+     IF PACK_MIGRARE.OBJECTEXIST('TABLE','TABLE')=0 THEN
+       EXECUTE IMMEDIATE '...';
+     END IF;
+   END;
+   /
+   ```
+
+6. **DROP** → wrap in:
+   ```sql
+   BEGIN
+     IF PACK_MIGRARE.OBJECTEXIST('OBJ')=1 THEN
+       EXECUTE IMMEDIATE 'DROP...';
+     END IF;
+   END;
+   /
+   ```
+
+7. **COMMENT ON** → keep as plain DDL (not inside EXECUTE IMMEDIATE)
+
+8. In MERGE/INSERT: omit NULL-valued columns and CLOB columns entirely
+
+## FILENAME CONVENTION
+
+```
+ff_YYYY_MM_DD_NN_<MODULE>.sql
+```
+- `YYYY_MM_DD` — data migrării
+- `NN` — secvență 2 cifre (01, 02...)
+- `<MODULE>` — modulul căruia îi aparține migrarea (ex: AUTO, FACTURARE, CONTAB)
+
+## LANGUAGE
+Comments: write in Romanian.
+Output: only the SQL script, no explanation.