V66 WEVIA self-introspection + UI dormants fix

- 3 meta-tools wired: intents_list, self_wire_gap_detector, skills_deep_rescan
- oss-discovery.html: Chargement fix (sk.skills undefined fallthrough bug)
- wevia-training.html: dynamic dormants updater v66UpdateDormants()
- oss-cache.json synced: 6178 stale -> 5651 API canonical
- Registry: 448 -> 451 tools (3 meta-tools added)
- NonReg 153/153 preserved, 3 GOLD backups

Co-authored-by: WEVIA-Master <wevia@weval-consulting.com>

api/blade-actions-surfaced.json

@@ -1,5 +1,5 @@
 {
-  "generated_at": "2026-04-18T04:10:01.285862",
+  "generated_at": "2026-04-18T04:15:01.423081",
   "stats": {
     "total": 47,
     "pending": 57,