feat: add triggers to all 38 skill templates

Multi-word, skill-specific trigger keywords for GBrain's RESOLVER.md
router. Each skill gets 3-6 triggers derived from its "Use when asked
to..." description text. Avoids single generic words that would collide
across skills (e.g., "debug this" not "debug").

These are distinct from voice-triggers (speech-to-text aliases) and
serve GBrain's checkResolvable() validation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

document-release/SKILL.md.tmpl

@@ -16,6 +16,10 @@ allowed-tools:
   - Grep
   - Glob
   - AskUserQuestion
+triggers:
+  - update docs after ship
+  - document what changed
+  - post-ship docs
 ---
 
 {{PREAMBLE}}