docs: sync from backend cab0719 - align request budget validation

09 - Audits/Activity Log.md

@@ -11,6 +11,30 @@ entries on top. Maintained by agents per the rule in `../AGENTS.md`.
 
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+### 2026-05-31 — backend@cab0719, frontend@ec2f765 — align request budget validation after Postgres migration
+
+**Commits:** backend `cab0719`, frontend `ec2f765` (backend `2.6.80`, frontend `2.7.20`)
+**Touched:**
+- Backend: `src/shared/constants/marketplace.ts`, `src/models/PurchaseRequest.ts`, `src/models/RequestTemplate.ts`, `src/services/marketplace/requestTemplateRoutes.ts`, `src/services/marketplace/PurchaseRequestService.ts`, `src/db/schema/purchaseRequest.ts`, `src/db/repositories/drizzle/DrizzleMarketplaceRepo.ts`, `__tests__/marketplace-request-budget-validation.test.ts`, `scripts/smoke/marketplace-request-budget.sh`
+- Frontend: `package.json`, `package-lock.json` version bump only.
+**Why:** Product/template creation could return `400` when the UI sent `urgency: "urgent"`, and template-to-purchase conversion could later fail when a template budget used `USD` / `EUR` / `IRR` while `PurchaseRequest` only accepted `USDT` / `USDC`. Runtime Mongoose validation, request-template route validation, and the PG `budget_currency` enum now share `USD`, `EUR`, `IRR`, `USDT`, `USDC`; urgency validation includes `urgent`.
+**Verification:** Backend `npm test -- --runTestsByPath __tests__/marketplace-request-budget-validation.test.ts`; backend `npm run typecheck`; backend `git diff --check`; frontend `npx tsc --noEmit --ignoreDeprecations 6.0`; smoke helper added at `scripts/smoke/marketplace-request-budget.sh` but not run against dev because no `ACCESS_TOKEN` / `CATEGORY_ID` were available in this session.
+**Linked docs updated:** [[PurchaseRequest]], [[RequestTemplate]], [[Marketplace API]], [[MongoDB to PostgreSQL Migration Guide]], [[MongoDB to PostgreSQL Migration Plan (Drizzle)]], [[Postgres Runtime Cutover Status]], [[Data Model Overview]], [[Payment]]
+
+---
+
+### 2026-05-31 — nick-doc@local — clarify Postgres runtime cutover status
+
+**Commits:** docs-only sync after backend `3a50dc4` (`integrate-main-into-development`, backend `2.6.79`)
+**Touched:**
+- Added [[Postgres Runtime Cutover Status]].
+- Updated overview, architecture, data-model, payment API, env, database-ops, migration-plan, migration-guide, and oracle checkout docs.
+**Why:** Correct the overbroad assumption that the promoted Postgres branch means normal runtime traffic is already PG-backed. The code has Postgres infrastructure, migrations, repository classes, and conditional `payment_quotes`, but live services still call Mongoose directly and Mongo remains authoritative until repository wiring/backfill/shadow-read cutover is completed.
+**Verification:** Code audit via `rg` on backend `origin/integrate-main-into-development@3a50dc4`: no runtime `createRepositories()` / `get*Repo()` use outside `src/db/repositories/factory.ts`; only normal service import of `src/db/client.ts` is `services/payment/priceOracle/quoteRepo.ts`.
+**Linked docs updated:** [[Postgres Runtime Cutover Status]], [[System Overview]], [[Tech Stack]], [[System Architecture]], [[Backend Architecture]], [[Database Strategy - Mongo vs Postgres Assessment]], [[Data Model Overview]], [[Payment]], [[Payment API]], [[Environment Variables]], [[Database Operations]], [[MongoDB to PostgreSQL Migration Guide]], [[MongoDB to PostgreSQL Migration Plan (Drizzle)]], [[Oracle Pricing & Stablecoin Depeg Protection]], [[Oracle Depeg Checkout — UI Implementation Guide]]
+
+---
+
 ### 2026-05-31 — backend@3a50dc4 — promote Postgres integration branch with oracle/depeg + gasless backports
 
 **Commits:** backend `11bfd02` `74d73c5` `1730c4d` `148c803` `8aa4473` `a5e4da2` `3a50dc4` (backend `2.6.76` → `2.6.79`)