feat(M3): Shared-source generator for agent variants

skills/implement-plan/cursor/.generated-manifest.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "https://ai-coding-skills.dev/schemas/generated-manifest/v1.json",
+  "generator": "scripts/generate-skills.mjs",
+  "generatedRoot": "skills/implement-plan/cursor",
+  "files": [
+    {
+      "path": "SKILL.md",
+      "kind": "file",
+      "mode": "644",
+      "sha256": "8d4e198ccc3ade97ed968b04e07282e9fae56150407bb06e9ee87963f3051cb4"
+    }
+  ]
+}

skills/implement-plan/cursor/SKILL.md

@@ -3,6 +3,8 @@ name: implement-plan
 description: Use when a plan folder (from create-plan) exists and needs to be executed in an isolated git worktree with iterative cross-model milestone review in Cursor Agent CLI workflows. ALWAYS invoke when user says "implement the plan", "execute the plan", "start implementation", "resume the plan", or similar execution requests.
 ---
 
+<!-- ⚠️ GENERATED FILE – do not edit directly. Edit the canonical source in skills/implement-plan/_source/cursor/ and run `pnpm run sync:pi`. -->
+
 # Implement Plan (Cursor Agent CLI)
 
 Execute an existing plan (created by `create-plan`) in an isolated git worktree, with iterative cross-model review at each milestone boundary.