docs: deploy the ai-constitution with core so the governance pointer resolves

Why: the always-on governance.md told agents to read
docs/ai-constitution.md when a decision is not covered, a path that
exists only in this repo, so the fallback failed in every other project.
(Simplification audit finding 27, second defect.)

Implementation Notes:
- Move docs/ai-constitution.md to core/ai-constitution.md; the existing
  core deploy step now ships it to ~/.claude/core/.
- governance.md line 4 and line 73 name ~/.claude/core/ai-constitution.md;
  the HUMANS.md and CONTROLS.md pointers now say they live in the
  holocron repo.
- Repoint path-qualified citations in AGENTS.md, architecture.md,
  skill-implementation-workflow.md and CONTROLS.md. The vendored
  write-skill example and the audit's historical notes are left as
  records.
- The docs/wiki gitlink is not bumped here; the wiki commit awaits push.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/notes/skill-implementation-workflow.md

@@ -58,7 +58,7 @@ Return: extracted content per source, commit SHAs, licence notes, security flags
 
 Spawn an agent to cross-check the extracted upstream content against:
 - `core/instructions/governance.md` — hard prohibitions, data classification, HITL requirements
-- `docs/ai-constitution.md` — scope discipline, deterministic execution preference, licence obligations, output volume constraint, transparency requirements
+- `core/ai-constitution.md` — scope discipline, deterministic execution preference, licence obligations, output volume constraint, transparency requirements
 
 The agent flags conflicts and tensions as numbered items for the synthesis grill. It does **not** resolve them — that is the grill's job.