chore(skills): remove meta-mcp skills (file channel closed, canon=mappa)

- delete using-projects-meta, setup-projects-meta (repo+targets)
- delete meta-host-routing, setup-tasks, setup-wiki (targets)
- project-bootstrap: projects-meta refs → mappa (Step 8 registry, triggers, auth fallback), v3.1.0
- update-skills: drop projects-meta-mcp rebuild step, v0.3.0
- README: bootstrap delegation .wiki/.tasks → mappa registration

README.md

@@ -52,10 +52,9 @@ project's folder and it will, in one pass:
 
 - initialize `git` (if missing) and write a sane `.gitignore`
 - create a starter `README.md`
-- lay out `.wiki/` per the [Karpathy LLM Wiki pattern](https://gist.github.com/karpathy/442a6bf555914893e9891c11519de94f) (delegated to [`setup-wiki`](skills/setup-wiki/))
-- lay out `.tasks/` with the canonical task board (delegated to [`setup-tasks`](skills/setup-tasks/))
+- register the project meta in **mappa** (wiki/task-сущности проекта; file-based `.wiki/`/`.tasks/` closed 2026-08-25)
 - write `AGENTS.md` (canon) with skill triggers (`use project wiki`, `use task management system`, `check across all projects`, `we're on Windows`) plus a `CLAUDE.md` legacy pointer
-- record the skill versions used in `.wiki/concepts/bootstrap-manifest.md` so cross-project layout drift stays debuggable
+- record the skill versions used in a mappa wiki entity (`concepts/bootstrap-manifest`) so cross-project layout drift stays debuggable
 
 Two modes, picked automatically: **init** for an empty folder, **upgrade**
 for an existing project (the skill only fills the gaps and never overwrites