docs: record 1.7.51 profile payment polish

AGENTS.md

@@ -2228,7 +2228,7 @@ session with **no other memory of this project**. So:
   instead of showing the error boundary.
 - **Baselines** (verified 2026-10-29): `npm test` → **0 errors, 0 warnings**,
   **156 tests**, build ok. The gate also type-checks the CVM server
-  (`tsc -p cvm-server/tsconfig.json`). `package.json` version **1.7.50**.
+  (`tsc -p cvm-server/tsconfig.json`). `package.json` version **1.7.51**.
   - ✅ Lint is **clean**: `no-explicit-any` = 0 · `react-hooks/exhaustive-deps` = 0
     · `no-unused-vars` = 0 · `react-refresh` = 0. Non-component exports were
     **split into their own modules** (`contexts/language.ts`, `lib/sortOptions.ts`,
@@ -2747,6 +2747,13 @@ Rules:
       calls are serialized/coalesced and decrypt results are memory-cached.
       APK sha256 `d338c158…`, versionCode 10750. Web live at `65a7f0b`.
       Production dependency audit: 0 vulnerabilities.
+    - **1.7.51 (2026-10-30):** profile/payment polish. The profile tip card no
+      longer renders empty when neither method exists; Lightning addresses accept
+      a pasted `lightning:` prefix and the profile row is tap-to-copy; CLINK codes
+      are canonicalised on save in profile/shop/crew/Lab forms; marketplace
+      listing detail surfaces a seller CLINK tip when their profile has one.
+      CLINK remains a wallet handoff, not an in-app rail. APK sha256 `ac433d91…`,
+      versionCode 10751. Web live at `c65e6ef`.
 
 ### Relay archive (dataset backup)
 - **Transfer content between keys (`scripts/transfer-content.mjs`, 2026-10-04):**