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

.wiki/overview.md

@@ -1,29 +1,3 @@
----
-title: claude-skills overview
-type: overview
-updated: 2026-04-28
----
+# ⛔ Файловый канал закрыт
 
-# claude-skills — overview
-
-Joint workshop where Vitya and Claude develop, test, and store Claude skills. Both editable sources (`skills/<name>/`) and built archives (`dist/<name>.skill`) live here, so a fresh machine can clone the repo and install every personal skill in one command.
-
-## Components
-
-- **`skills/`** — editable skill sources, one folder per skill (each with `SKILL.md` + optional `assets/`).
-- **`dist/`** — built `.skill` archives, committed so installs don't need a build toolchain on the target.
-- **`scripts/`** — `build.sh` / `build.ps1` (zip sources → archive), `install.sh` (copy sources → `~/.claude/skills/`).
-- **`.wiki/`** — Karpathy LLM Wiki for design decisions and gotchas. See [CLAUDE.md](CLAUDE.md) for schema.
-- **`.tasks/`** — task board (`STATUS.md`).
-- **`CLAUDE.md`** — repo-level agent instructions (skill triggers).
-
-## Where to look
-
-- New here? → [concepts/repo-layout.md](concepts/repo-layout.md), then `README.md`.
-- Working on a skill? → edit `skills/<name>/`, then `bash scripts/install.sh <name>` (or `pwsh scripts/build.ps1 <name>` to refresh the archive).
-- Tracking work? → [.tasks/STATUS.md](../.tasks/STATUS.md).
-- Made a non-trivial decision? → add a `concepts/<topic>.md` page, link from [index.md](index.md), append a line to [log.md](log.md).
-
-## Cross-references
-
-This page intentionally stays short. The substantive material lives in `concepts/` (decisions, gotchas) and the [index](index.md) catalog.
+**Не читать. Не править.** Канон — mappa (`mcp__mappa__*`): wiki-сущности проекта, конвенции — AGENTS-сущность. Скил: `mappa-knowledge`.