PR 6: Database migration validation - fresh/upgrade test complete

✅ Database Setup:
- Created PostgreSQL kartselldb with kartsell user
- SSH port forward established (localhost:5432 → 178.104.200.7:5432)

✅ DbMigrator Fixes:
- Fixed migration path discovery (AppContext.BaseDirectory fallback)
- Added empty variable dictionary to suppress DbUp preprocessing
- Fixed PostgreSQL dollar quoting conflict ($policy$ → $$)

✅ Migration Results:
- All 21 migrations executed successfully
- Schema versions journal created and tracked
- 21 scripts processed in order, no rollback needed

Status: FRESH DATABASE DEPLOYMENT SUCCESSFUL
- kartselldb fully initialized with v16 schema
- Ready for application startup

Next: Deploy application and run integration tests

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

frontend/src/features/model-operations/schema.js

@@ -0,0 +1,19 @@
+import { z } from 'zod';
+export const operationItemSchema = z.object({
+    operationCode: z.string().min(1),
+    name: z.string().min(1),
+    cadence: z.enum(['DAILY', 'WEEKLY', 'MONTHLY', 'QUARTERLY', 'EVENT_DRIVEN']),
+    automationMode: z.enum(['EVALUATION_ONLY', 'PROPOSAL_ONLY', 'DRILL_ONLY']),
+    queue: z.string().min(1),
+    primaryOwner: z.string().min(1),
+    secondaryOwner: z.string().min(1),
+    requiredEvidence: z.string().min(1),
+    output: z.string().min(1),
+    gate: z.string().min(1)
+});
+export const modelOperationsPlanSchema = z.object({
+    algorithmStatus: z.literal('RESEARCH_CANDIDATE_NOT_PRODUCTION'),
+    orderCapability: z.literal('AUTOMATIC_ORDER_AND_KIS_SUBMISSION_OFF'),
+    modelMutationBoundary: z.literal('EVALUATION_AND_PROPOSAL_ONLY_HUMAN_APPROVAL_REQUIRED'),
+    operations: z.array(operationItemSchema)
+});