REG-060 — FIXED: `.aegis_ai_context/` had a thorough purpose statement
inside its own README, but nothing in the repository's main entry points
(README.md, CONTRIBUTING.md, docs/REPOSITORY_MAP.md) signposted what the
directory is or pointed a human reader to that explanation.

=== Confirmed the gap, not assumed it ===

$ grep -n "aegis_ai_context" README.md CONTRIBUTING.md docs/REPOSITORY_MAP.md
(no matches — confirmed before writing anything)

$ head -4 .aegis_ai_context/README.md
# Aegis AI Context Router

This directory is an **advisory, progressively disclosed repository-navigation
aid**. Begin here, open only the layer needed for the task, and verify every
material statement against the named source and tests. ...

The internal explanation was already thorough and correctly scoped
(explicitly disclaims being "concealed directives, authorization, private
reasoning, proof, certification, or release evidence"). The gap was
discoverability: a contributor reading the repository's own map document
would never learn this directory exists or what it is for unless they
happened to open it directly.

=== Fix ===

Added a new "AI context and navigation aids" section to
`docs/REPOSITORY_MAP.md`, between "Tests and verification" and "Evidence
and historical results," with a two-row table covering `.aegis_ai_context/`
and `llms.txt` (the other navigation aid AGENTS.md names as a fallback:
"use `llms.txt` as the compact navigation aid when that index is
unavailable"). Both rows state the same non-authoritative boundary the
existing internal documents already carry, rather than introducing new
language — this is a signpost, not a new claim.

Doc-only change; no code, manifest, or claims-register content touched.

=== Gates ===

python tools/docs/verify_documentation.py --root . --strict: PASS
python scripts/verify_docs.py --root .: PASS
python scripts/verify_claims.py: PASS
bash scripts/verify_links.sh --root .: PASS
git diff --check: clean
