feat(skills): project-bootstrap@1.11.0 — .gitignore meta-isolation block

Step 1 now ships agent meta-paths inversions (`!.claude/`, `!.tasks/`,
`!.wiki/`, `!.brainstorm/`, `!.archive/`, `!.mcp/`, `!.mcp.json`,
`!MEMORY.md`) so own greenfield/upgrade projects re-enable visibility
against the global `core.excludesFile` cutter (`~/.config/git/ignore`)
that hides obvyaska from forks of upstream open-source. Without it any
fresh bootstrap landed an empty first commit on machines with the global
configured: setup-wiki/setup-tasks/Step 5 created .wiki/.tasks/CLAUDE.md
but git ignored them.

Two cases handled in Step 1:
- no .gitignore → write template (block included unconditionally)
- existing .gitignore → marker-based (`# AI обвеска — слой 2:`)
  append-if-missing; idempotent on re-run

Smoke-tested in %TEMP%\test-bootstrap-meta-iso: all 3 acceptance
criteria pass + negative control (strip block → global hides) +
idempotency (re-run with marker present skips). Source concept:
workshop wiki concepts/meta-out-of-repo.md. Closes board task
[meta-isolation-bootstrap-skill-update].

MINOR bump (1.10.1 → 1.11.0) — new feature, backward-compat.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

skills/project-bootstrap/assets/.gitignore.template

@@ -27,3 +27,14 @@ Thumbs.db
 # Logs
 *.log
 logs/
+
+# AI обвеска — слой 2: переопределяем глобальный ~/.config/git/ignore
+# для своих репо (см. global wiki concept meta-out-of-repo)
+!.claude/
+!.tasks/
+!.wiki/
+!.brainstorm/
+!.archive/
+!.mcp/
+!.mcp.json
+!MEMORY.md