docs: update backlog and log for badges PR

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

Author: kvz

CHANGELOG.md

@@ -36,7 +36,7 @@ Ideas that will be planned and find their way into a release at one point
       - [ ] C: not implemented
       - [x] Infrastructure: parallel execution, caching, modular architecture, per-language handlers
       - [x] CI integration: `verified:` header in function files, `yarn test:parity` for CI
-      - [ ] Badge: "Verified against PHP 8.3"
+      - [x] Badge: "Verified against PHP 8.3" (added to README, PR #501)
 - [ ] Modernize, e.g.:
       - [ ] Migrate Babel 6 → native ESM (Node 20+)
       - [ ] Migrate Mocha → Vitest

docs/prompts/LOG.md

@@ -162,3 +162,7 @@ LLMs log key learnings, progress, and next steps in one `### Iteration ${increme
 - Added `.playwright-mcp/` to .gitignore (leftover from website investigation)
 - Discussed website/source/ files: currently tracked in git, regenerated by CI
   - Decision deferred: removing from git is a bigger architectural change
+- Added README badges (PR #501, merged):
+  - CI status, npm version, Verified: PHP 8.3, Verified: Python 3.12
+  - Addresses backlog item "Badge: Verified against PHP 8.3"
+- Balance: after 5 iterations of verification focus, this iteration touched documentation/visual