Add docs index and per-skill docs, link from main README

docs/CREATE-PLAN.md

@@ -0,0 +1,27 @@
+# CREATE-PLAN
+
+## Purpose
+
+Create structured implementation plans with milestone and story tracking.
+
+## Key Behavior
+
+- Requires Superpowers dependencies (`brainstorming`, `writing-plans`).
+- Creates plans under `ai_plan/YYYY-MM-DD-<short-title>/`.
+- Ensures `/ai_plan/` is in `.gitignore`.
+- Commits `.gitignore` update locally when added.
+- Produces:
+  - `original-plan.md`
+  - `final-transcript.md`
+  - `milestone-plan.md`
+  - `story-tracker.md`
+  - `continuation-runbook.md`
+
+## Execution Workflow Rules
+
+- Read runbook first.
+- Complete one milestone at a time.
+- Lint/typecheck/test (changed files first).
+- Commit (do not push), ask for feedback, apply feedback, commit again.
+- Move to next milestone only after approval.
+- Ask permission before final push.