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

pi-package/skills/do-task/.generated-manifest.json

@@ -0,0 +1,19 @@
+{
+  "$schema": "https://ai-coding-skills.dev/schemas/generated-manifest/v1.json",
+  "generator": "scripts/generate-skills.mjs",
+  "generatedRoot": "pi-package/skills/do-task",
+  "files": [
+    {
+      "path": "SKILL.md",
+      "kind": "file",
+      "mode": "644",
+      "sha256": "4920ad0cdeda546b37432c2268159724de54ddb01922308f2df88fcca4db8d31"
+    },
+    {
+      "path": "templates/task-plan.md",
+      "kind": "file",
+      "mode": "644",
+      "sha256": "fd38213fabf350e14b48c5209910d00c16ff74c455101618063835fa8c19e73e"
+    }
+  ]
+}

pi-package/skills/do-task/SKILL.md

@@ -3,6 +3,8 @@ name: do-task
 description: Execute a single user-supplied prompt end-to-end in pi with plan review, implementation review, verification, and one persistent task-plan artifact.
 ---
 
+<!-- ⚠️ GENERATED FILE – do not edit directly. Edit the canonical source in skills/do-task/_source/pi/ and run `pnpm run sync:pi`. -->
+
 # Do Task (Pi)
 
 Execute an ad-hoc user prompt end-to-end: parse, clarify, plan, implement, verify, review, commit, and optionally push.

pi-package/skills/do-task/templates/task-plan.md

@@ -1,3 +1,4 @@
+<!-- ⚠️ GENERATED FILE – do not edit directly. Edit the canonical source in skills/do-task/_source/pi/ and run `pnpm run sync:pi`. -->
 # Task Plan: [Short Title]
 
 > **Variant guardrail (pi):** Required workflow skills (`brainstorming`, `test-driven-development`, `verification-before-completion`, `finishing-a-development-branch`, `using-git-worktrees`) must be available to pi as documented in `docs/PI-SUPERPOWERS.md`. Load the relevant workflow skill before entering its matching phase.