chore: Repo hygiene + merge readiness notes for integrating into main andhis repo

[Whiteks1]

Context

We will later integrate these docs into the main andhis repository. We need consistent paths, no duplicates, and clear migration notes to avoid breaking links and history.

Affected paths

• README(s) under docs/ai/ (and any root README that references AI docs)
• docs/ai/** (structure audit)

Steps

1. Confirm a single canonical root path is used everywhere: docs/ai/
2. Remove or mark empty placeholders (no “dead” docs without purpose).
3. Fix internal links in READMEs and docs to use canonical paths.
4. Create docs/ai/MIGRATION_NOTES.md with:
   • target path in main andhis repo
   • mapping rules (what folder goes where)
   • merge strategy recommendation (subtree/submodule/copy) and chosen approach
5. Ensure no duplicate “source of truth” files exist for the same concept.

Definition of Done

• Canonical path is consistent across docs and links
• No duplicate competing sources of truth in AI docs area
• MIGRATION_NOTES.md exists and is actionable for the future merge
• Repo is clean enough to be integrated without manual link-fixing later