docs(meta): repoint decisions/ paths to governance/ tree (pql migration)

Phase 1 follow-up: update the active instruction layer (CLAUDE.md, project
structure rule, DECISIONS.md redirect, agent personalities, skill docs) to
reference governance/{decisions,questions,rejected}/<domain>.md instead of the
retired flat decisions/*.md layout.

Path references only — command-surface references (tooling/db/decision*,
decisions-sync, Makefile targets, clerk) are repointed to the pql CLI in the
Phase 4 consumer cutover. Historical archives (docs/sprints, docs/discussions,
docs/workshops) keep their point-in-time decisions/ paths; the separate
whatsinagame/ template distribution is untouched. Agent-memory is gitignored
and out of scope.

The agent/skill repath was applied by tooling/pql-migrate/repath_references.py
(ordered, meaning-preserving replacements; bare-dir rule uses a negative
lookbehind so it can't corrupt a freshly-created governance/decisions/ path),
committed for provenance. CLAUDE.md, project-structure.md, and DECISIONS.md
were hand-edited (structural tree/table changes).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/skills/git-commit/SKILL.md

@@ -95,7 +95,7 @@ content commit — e.g. shipping thousands of generated planetary description fi
 — that review is moot and just burns agents on noise. Add a `Clerk-Skip:` **trailer
 line** to the commit message and `tooling/clerk-review` auto-approves that commit
 without spawning an agent. Use it only for content/data dumps, never for commits
-that touch `decisions/`, code, or ticket-bearing work.
+that touch `governance/`, code, or ticket-bearing work.
 
 It must be a trailer (a line starting with `Clerk-Skip:`), not inline prose — that
 way a commit that merely *mentions* the token in its subject or body isn't skipped.