Skills refinement: improve formatting, phase structure, and trigger descriptions across 9 skills

- balance-check: rewrote as explicit phases with domain routing table; expanded trigger hints
- scope-check: restructured into numbered phases for clarity
- adopt, review-all-gdds, help, project-stage-detect: add argument mode headers or trigger hints
- gate-check, sprint-status, story-readiness: minor wording and structure improvements

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/skills/help/SKILL.md

@@ -4,6 +4,8 @@ description: "Analyzes what is done and the users query and offers advice on wha
 argument-hint: "[optional: what you just finished, e.g. 'finished design-review' or 'stuck on ADRs']"
 user-invocable: true
 allowed-tools: Read, Glob, Grep
+context: |
+  !echo "=== Live Project State ===" && echo "Stage: $(cat production/stage.txt 2>/dev/null | tr -d '[:space:]' || echo 'not set')" && echo "Latest sprint: $(ls -t production/sprints/*.md 2>/dev/null | head -1 || echo 'none')" && echo "Session state: $(head -5 production/session-state/active.md 2>/dev/null || echo 'none')"
 ---
 
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