Model routing, PostCompact hook, parallel spawning, error recovery

Model tier assignment:
- model: haiku → help, sprint-status, story-readiness, scope-check,
  project-stage-detect, changelog, patch-notes, onboard (read-only/format)
- model: opus → review-all-gdds, architecture-review, gate-check
  (multi-doc synthesis, high-stakes verdicts)

PostCompact hook:
- New .claude/hooks/post-compact.sh — fires after compaction, reminds
  Claude to re-read production/session-state/active.md to restore context
- Registered in settings.json between PreCompact and Stop

Parallel Task spawning:
- review-all-gdds: Phase 2 (consistency) and Phase 3 (design theory) now
  explicitly instructed to spawn as parallel Task agents simultaneously

Error Recovery Protocol:
- Standard BLOCKED-handling section added to: review-all-gdds,
  architecture-review, dev-story, team-combat, team-qa, team-narrative,
  team-level, team-ui, team-audio, team-release, team-polish
- Pattern: surface blocker → assess dependencies → offer 3 options via
  AskUserQuestion → always produce partial report

Coordination rules:
- Added Model Tier Assignment table with routing rationale
- Added Subagents vs Agent Teams section (experimental agent teams docs)
- Added Parallel Task Protocol (when/how to spawn parallel agents)

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

.claude/hooks/post-compact.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+# post-compact.sh — fires after conversation compaction
+# Reminds Claude to restore session state from the file-backed checkpoint.
+
+ACTIVE="production/session-state/active.md"
+
+echo "=== Context Restored After Compaction ==="
+
+if [ -f "$ACTIVE" ]; then
+  SIZE=$(wc -l < "$ACTIVE" 2>/dev/null || echo "?")
+  echo "Session state file exists: $ACTIVE ($SIZE lines)"
+  echo "IMPORTANT: Read this file now to restore your working context."
+  echo "It contains: current task, decisions made, files in progress, open questions."
+else
+  echo "No session state file found at $ACTIVE"
+  echo "If you were mid-task, check production/session-logs/ for the last session audit."
+fi
+
+echo "========================================="