chore(deps-dev): bump @earendil-works/pi-coding-agent (#20)

Bumps [@earendil-works/pi-coding-agent](https://github.com/earendil-works/pi/tree/HEAD/packages/coding-agent) from 0.84.1 to 0.84.2.
- [Release notes](https://github.com/earendil-works/pi/releases)
- [Changelog](https://github.com/earendil-works/pi/blob/main/packages/coding-agent/CHANGELOG.md)
- [Commits](https://github.com/earendil-works/pi/commits/v0.84.2/packages/coding-agent)

---
updated-dependencies:
- dependency-name: "@earendil-works/pi-coding-agent"
  dependency-version: 0.84.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

packages/pi-extension/package-lock.json

@@ -26,14 +26,14 @@
   },
   "devDependencies": {
     "@earendil-works/pi-ai": "^0.84.1",
-    "@earendil-works/pi-coding-agent": "^0.84.1",
+    "@earendil-works/pi-coding-agent": "^0.84.2",
     "@types/node": "^26",
     "typebox": "1.3.11",
     "typescript": "^7.0.2"
   },
   "peerDependencies": {
     "@earendil-works/pi-ai": "^0.84.1",
-    "@earendil-works/pi-coding-agent": "^0.84.1",
+    "@earendil-works/pi-coding-agent": "^0.84.2",
     "typebox": "^1.1.38"
   },
   "pi": {