Merge branch 'unstable' into agents/daily/docs-agent-6020479929168353557

docs/agents/task-logs/daily/2026-02-16_13-05-00_docs-agent_completed.md

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+# docs-agent Task Log
+
+- **Date**: 2026-02-16
+- **Agent**: docs-agent
+- **Status**: Completed
+- **Cadence**: Daily
+
+## Activities
+- Audited `README.md` and `CONTRIBUTING.md` for duplicate instructions.
+- Removed redundant `npx playwright install` commands.
+- Consolidated installation instructions.
+- Removed redundant `npm run test:smoke` entries and clarified existing ones.
+- Verified changes with `npm run lint` and `npm run format`.