docs: sync USAGE skill tables + CHANGELOG [Unreleased]

- USAGE.md: add /impeccable + /tour to the decision + command tables
  (both shipped after USAGE's last edit; already in README)
- CHANGELOG.md: capture job6-9 committed work in [Unreleased] —
  new Security block (magic MCP ask-gate, MAGIC_API_KEY by reference,
  printenv redaction, gitleaks backstop) + gsd-pi 3.0.0 bump

CHANGELOG.md

@@ -10,6 +10,13 @@ Format follows [Keep a Changelog](https://keepachangelog.com/).
 - graphify skill dist refreshed 0.8.45 → 0.9.6 (out-of-band `make plugin`; SKILL.md + query/extraction references updated by the generator).
 - `/deploy` checklist reshaped on first-real-run feedback, in two passes: runbook steps are **one command per line, interactive-session style** (an early step opens the ssh session; later lines run on the box; local steps say "from your machine") instead of folded `ssh host "cd … && …"` one-liners — step = comment header + command lines up to the next blank line, a `@delta:` directive governs the whole block; and the checklist is now **display-only** — `NEXT.sh` is no longer written at all (throwaway artifact; `PENDING.json` + the live runbook regenerate it in any session) and every hand-back **ends the turn with the full checklist as the final text, no tool call after it** (a checklist printed above a blocking question tool was observed never reaching the user). Template `templates/deploy/PROCEDURE.md` restyled to match.
 - `settings.json`: `inputNeededNotifEnabled: true` adopted (harness notification toggle); committed layout otherwise unchanged.
+- gsd-pi upgraded 2.64.0 → 3.0.0 — `status-reporter` output parser adapted to the ADR-013 cutover.
+
+### Security
+- **Magic MCP fully ask-gated** — all four `mcp__magic__*` tools (builder, refiner, inspiration, logo_search) moved to `permissions.ask` in `settings.json`; no magic call can auto-execute. The builder opens an unauthenticated local callback server (`127.0.0.1:9221+`, `Access-Control-Allow-Origin: *`, no token check) whose POST body is injected verbatim into the tool result the model consumes — the ask-gate is the mitigation on our side (BDR-059).
+- **`MAGIC_API_KEY` passed by reference, not by value** — the MCP server is registered with `--env 'API_KEY=${MAGIC_API_KEY}'` (Claude Code expands it at launch from its own process env) instead of the literal secret, which `claude mcp add` would otherwise materialize in plaintext in `~/.claude.json`, outside the repo's `.env` allowlist reach (BDR-026).
+- **`printenv` / `env` dumps redacted in `rtk-rewrite.sh`** — closes a leak vector where a rewritten environment dump could surface a Gitea token.
+- **gitleaks secret-scanning backstop** — `.gitleaks.toml`, a pre-commit hook, and `make scan-secrets` added to catch secrets before they land; pre-existing stale secret-bearing artifacts purged (GO-gated).
 
 ### Added
 - **impeccable** (pbakaus, Apache-2.0) wired into the toolchain as the design counterpart of semgrep: the `/impeccable` skill (23 verbs under one command: audit, polish, bolder, quieter…) plus the 45-rule deterministic anti-pattern detector (`npx impeccable detect`, exit 0/2, `--json`). Complementary to `frontend-design` (kept — aesthetic direction at build time); impeccable adds the deterministic audit floor and per-project design context (`/impeccable init`). CLI pinned in `plugins.lock.json` (3.2.0 — a silent rules update would change audit output on unchanged code); dist is machine-owned under `skills-external/impeccable/` (gitignored, ctx7 pattern), staged-installed by `install-plugins.sh` Step 8d, refreshed pin-honored by `update-all.sh`, symlinked by `link.sh`, listed in the design/web/web-full/full profiles and the design-work routing. Requires Node ≥ 24: the install baseline is bumped from 22 to 24 LTS (NodeSource `setup_24.x` / brew `node@24`), so `make plugin` upgrades a too-old host in place; the impeccable steps still skip gracefully if Node stays below 24. Not in the design gate's GATE-BLOCK list yet — promotion deliberate, after first dogfood.