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/active-platform/SKILL.md

@@ -1,5 +1,7 @@
 ---
 name: active-platform
+author: ours
+version: 0.1.0
 description: Switches command, path, and example generation to the user's currently active development platform — Windows / Linux / macOS. Use this whenever you produce shell commands, install steps, README quick-start sections, or any output the user will paste into a terminal — even if they don't say "shell" or "command" explicitly. The default active platform is Windows / PowerShell because that's the user's primary workstation. Recognize and obey trigger phrases like "мы на винде", "мы на линуксе", "мы на маке", "we're on Windows", "we're on Linux", "we're on macOS", and close variants — they switch the active platform for the rest of the session. Also activate this skill anytime the user mentions a different machine, a remote box, or asks "how would I run this on X".
 ---