feat(catalog): sovereign catalog — provenance + de-superpowers (idea 12)

- author: ours / adapted-from frontmatter on all 38 skills (scripts/add-provenance.py, idempotent)
- versions added to vendor copies (caveman x5, find-skills) + active-platform
- README(en/ru): new Sovereignty/Adapted-from section, drop wiki-maintainer & superpowers refs
- project-bootstrap v1.12.0 -> v1.13.0: remove 'use superpowers' trigger from template
  + trigger table; recommend-dont-menu wording no longer references superpowers:brainstorming
- dist rebuilt to 38 (pruned stale update-claude-skills.skill)
- lint: 0 violations, 0 warnings

skills/setup-context7/SKILL.md

@@ -1,5 +1,6 @@
 ---
 name: setup-context7
+author: ours
 version: 1.0.0
 description: Installs and configures the official context7 MCP plugin (`context7@claude-plugins-official`), reuses the user's existing Context7 API key, and cleans out any manual `mcpServers.context7` entries from `~/.claude.json` and `~/.claude/settings.json`. Use this skill when the user says "install context7", "set up context7", "configure context7", "настрой context7", "установи context7", "context7 не работает", "context7 isn't working", or whenever the `mcp__context7__resolve-library-id` / `mcp__context7__query-docs` tools are missing in a session that needs library docs. Cross-platform — Windows / Linux / macOS. Mutates user-level config; pauses for confirmation before writing.
 ---