Two architectural bugs in orphans scanner — both surfaced by morning
/sleep-review of deep-sleep/2026-05-12-0400 (108 false-positive
orphan-wikilinks; the engine was scanning sync-repo MEMORY.md and
flagging every `[[../../../rules/X]]` cross-repo ref as broken).
1. Asymmetric normalization in extract_wikilinks
- `all_basenames(root)` indexed file_stem (lowercase, no path)
- `extract_wikilinks` returned lowercased FULL link text including
`../../../`-prefix and `subdir/` segments
- Result: `[[chatlogs/X/Y]]` never matched `Y.md` in index, every
`[[../../../rules/X]]` always flagged orphan
Fix: `normalize_target(raw) -> Option<String>` strips path prefix,
strips `.md` suffix, returns None for `../`-rooted refs that escape
the scan tree (engine cannot validate cross-repo targets).
2. extract_handoffs scanner removed
- Regex `^\s*-\s*\*\*([a-z0-9][a-z0-9_-]{2,})\*\*` was matching every
prose bold-bullet, e.g. `- **english-jargon** — last 7d:` in
backlog.md or `- **L1-Path-C**:` in chatlogs.
- sync-repo scan: 0 real handoff sections present, 100% of matches
were prose. Real handoff syntax in agent-graph repos uses YAML
frontmatter, not prose markdown bullets.
- Scanner deleted along with its helper; wikilink scanner alone
covers the explicit `[[...]]` ref use case.
## Result on sync-repo (live data)
| Metric | Before | After |
|----------------|-------:|------:|
| orphan refs | 108 | 1 |
| false-positive | 107 | 0 |
Remaining 1 = legitimate `[[wikilink]]` literal in backlog.md prose.
## Tests added (already present in HEAD via prior fleet commit)
- `tests::cross_repo_ref_skipped` — `../../../foo` -> None
- `tests::path_prefixed_target_basenamed` — `chatlogs/X/Y` -> "Y"
- `tests::plain_basename_passes_through`
- `tests::md_suffix_stripped`
- integration `cross_repo_wikilink_not_flagged` (E2E)
- integration `path_prefixed_wikilink_matches_basename` (E2E)
12/12 tests pass. Release binary rebuilt + installed to ~/.cargo/bin/.
Private mirror at ~/Projects/KeiSeiKit/_primitives/... synced.
Closes backlog.md "engine bug #4" (added by user via prior /sleep-review).
d2c966d88b