docs: add Sync-From-Code rule + Activity Log

- AGENTS.md: mandate Activity Log entry + section updates after every code push
- 09 - Audits/Activity Log.md: new append-only log, seeded with this session's
  frontend fixes (Docker build unblock, request template debug improvements,
  429 storm fix) and the cross-repo rule rollout

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

09 - Audits/Activity Log.md

@@ -0,0 +1,76 @@
+---
+title: Activity Log
+tags: [audit, log, append-only]
+created: 2026-05-28
+---
+
+# Activity Log
+
+Append-only log of every `git push` from `backend` and `frontend`. Newest
+entries on top. Maintained by agents per the rule in `../AGENTS.md`.
+
+---
+
+### 2026-05-28 — backend@e46be98, frontend@af77b3c — add nick-doc sync rule + version bumps
+
+**Commits:** backend `e46be98` (2.6.24 → 2.6.25), frontend `af77b3c` (2.6.25 → 2.6.26)
+**Touched:** `backend/AGENTS.md`, `frontend/AGENTS.md` (new), both `package.json` +
+`package-lock.json`
+**Why:** Establish a mandatory rule that every code push must be followed by a
+nick-doc Activity Log entry (and relevant section updates) so the vault never
+falls behind the code. Frontend AGENTS.md created from scratch (was missing).
+**Verification:** Pushed to `integrate-main-into-development` on both repos —
+Woodpecker builds pending.
+**Linked docs updated:** This vault's `AGENTS.md` updated with the same rule.
+**Note:** Backend (2.6.25) and frontend (2.6.26) are intentionally one patch
+apart — backend was a version behind before this session. Should be re-aligned
+on the next paired bump.
+
+---
+
+### 2026-05-28 — frontend@9d4aa37 — fix 429 request storm on template SWR hooks
+
+**Commits:** `9d4aa37`
+**Touched:** `src/actions/request-template.ts`
+**Why:** Production browser showed repeated 429 (Too Many Requests) on
+`/api/marketplace/request-templates/sellers`. Default SWR config was
+revalidating on focus/reconnect and retrying on errors, making backend
+rate-limit recover impossible without a restart.
+**Verification:** Pushed, awaiting Woodpecker build. Visual confirmation on
+dev.amn.gg after deploy.
+**Linked docs updated:** none yet — SWR pattern should be promoted to
+`07 - Development/Coding Standards.md` in a follow-up.
+
+---
+
+### 2026-05-28 — frontend@6c89444 — improve request template form debug feedback
+
+**Commits:** `6c89444`
+**Touched:** `src/sections/request-template/request-template-new-edit-form.tsx`
+**Why:** Users could not tell why "ایجاد قالب" failed — validation errors
+silently blocked submission, API errors collapsed to generic "خطایی رخ داده
+است!", and the "انتشار" Switch in renderActions was visual-only.
+**Verification:** Type-check passes via Docker build in prior session; manual
+browser test pending.
+**Linked docs updated:** none.
+
+---
+
+### 2026-05-27 — frontend@8c0f14d, ad498f4, f3a3c9d, bb72a66 — unblock 2.6.19 Docker build
+
+**Commits:** `bb72a66` `f3a3c9d` `ad498f4` `8c0f14d`
+**Touched:** `src/sections/request-template/request-template-checkout-payment.tsx`,
+`src/web3/components/wallet-selector.tsx`, `tsconfig.json`, `src/types/payment.ts`
+**Why:** Docker build was failing on TypeScript compilation after the
+wallet-support + test-payment feature merge. Four distinct errors fixed:
+User type uses `_id` not `id`; wallet-selector imported non-existent
+`@/components/ui/dialog`; `@/*` path alias missing from tsconfig; IPayment
+metadata type didn't allow test-payment fields.
+**Verification:** Local `docker build` succeeded — image
+`escrow-frontend:2.6.19` created.
+**Linked docs updated:** none — should add SWR + UI library notes to
+`07 - Development/Coding Standards.md`.
+
+---
+
+<!-- Add new entries above this line. Newest at top. -->