deadcode: remove unused extension dev dependencies (#22495)

* Chore: remove unused extension dev dependencies

* Chore: fix changelog PR reference

* Chore: restore dropped deadcode changelog entries

* Chore: retag unused-dependency changelog entries

extensions/llm-task/package.json

@@ -4,9 +4,6 @@
   "private": true,
   "description": "OpenClaw JSON-only LLM task plugin",
   "type": "module",
-  "devDependencies": {
-    "openclaw": "workspace:*"
-  },
   "openclaw": {
     "extensions": [
       "./index.ts"

extensions/lobster/package.json

@@ -3,9 +3,6 @@
   "version": "2026.2.20",
   "description": "Lobster workflow tool plugin (typed pipelines + resumable approvals)",
   "type": "module",
-  "devDependencies": {
-    "openclaw": "workspace:*"
-  },
   "openclaw": {
     "extensions": [
       "./index.ts"

extensions/open-prose/package.json

@@ -4,9 +4,6 @@
   "private": true,
   "description": "OpenProse VM skill pack plugin (slash command + telemetry).",
   "type": "module",
-  "devDependencies": {
-    "openclaw": "workspace:*"
-  },
   "openclaw": {
     "extensions": [
       "./index.ts"