feat(tokens): compress the 10 fattest personal skill descriptions

6,416 → 4,243 chars (≈ −540 tokens/session, catalog loaded every
session). Kept per BDR-014/LRN-043: 'Use when' pattern, discriminating
FR+EN triggers, all 'For X → /Y' disambiguation lines. Cut: redundant
trigger synonyms, header/engine enumerations, prose the model derives.
find-docs excluded (ctx7-owned, regen clobbers — LRN-086); doc + geo
taken instead. All ≤ ~505 chars body (BDR-014 aspirational ceiling).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016zA3Qh2Q1QpcGXzXxKeDHR

skills/audit-delta/SKILL.md

@@ -1,16 +1,13 @@
 ---
 name: audit-delta
 description: |
-  Use when the user wants a recurring code audit scoped to everything that
-  changed since the previous audit run (full codebase on first run), on one
-  or more selectable axes: CLAUDE.md norm conformity, bugs/improvements,
-  dead code, security. NOT for one obvious bug (/hotfix, /bugfix), one-shot
-  full cleanup (/code-clean), full security posture (/cso), quality
-  dashboard (/health), or branch/PR diff review (/review, /code-review).
-  Triggers: "audit-delta", "audit since last run", "incremental audit",
-  "audit incrémental", "audit les changements", "audit ce qui a changé
-  depuis la dernière fois", "periodic audit", "audit périodique",
-  "re-run the audit", "relance l'audit", "audit conformité + sécurité".
+  Use when the user wants a recurring code audit scoped to changes since
+  the previous run (full codebase on first run), on selectable axes:
+  CLAUDE.md conformity, bugs, dead code, security. NOT one obvious bug
+  (/hotfix, /bugfix), one-shot cleanup (/code-clean), security posture
+  (/cso), dashboard (/health), branch diff (/review).
+  Triggers: "audit-delta", "incremental audit", "audit incrémental",
+  "audit ce qui a changé", "periodic audit", "relance l'audit".
 argument-hint: "[axes among: conformity errors deadcode security — blank = asked]"
 allowed-tools:
   - Read