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Zhongwei Li
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commands/steering-update.md
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457
commands/steering-update.md
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---
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description: Incrementally update steering context based on code changes since last generation (80% faster than full regeneration)
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---
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# Steering Context Generator - Incremental Update
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Efficiently update your steering context documentation when code changes.
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## Quick Start
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```bash
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/steering-update
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```
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The system will:
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1. 🔍 Detect changed files since last generation
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2. 📊 Identify affected domains
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3. 🤖 Run only relevant agents
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4. 📝 Update specific documents
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5. ✅ Merge with existing context
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## How It Works
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### Change Detection
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The system uses Git (if available) or file timestamps to detect changes:
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```bash
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# Check last generation time
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LAST_GEN=$(jq -r '.last_run' .claude/memory/orchestration/state.json)
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# Detect changes via Git
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git diff --name-only $LAST_GEN..HEAD
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# Or via file timestamps
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find . -newer .claude/steering/ARCHITECTURE.md -type f
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```
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### Domain Mapping
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Changed files are mapped to affected domains:
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| Files Changed | Affected Domains | Agents to Run |
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|---------------|------------------|---------------|
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| `*.tsx, *.jsx` | UI Components | `ui-specialist` |
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| `app/api/*.ts` | API Routes | `api-design-analyst` |
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| `prisma/schema.prisma` | Database | `database-analyst` |
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| `*.test.ts` | Testing | `test-strategist` |
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| `lib/events/*.ts` | Messaging | `messaging-architect` |
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### Selective Agent Execution
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Only affected agents run:
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```
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Changes:
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✓ UI: 4 files modified
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✓ API: 6 files changed
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✓ Database: 2 schema updates
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Running agents:
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⏳ ui-specialist (updating UI_DESIGN_SYSTEM.md)
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⏳ api-design-analyst (updating API_DESIGN_GUIDE.md)
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⏳ database-analyst (updating DATABASE_CONTEXT.md)
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```
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### Document Merging
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Updated sections are merged with existing documents:
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```markdown
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Before:
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UI_DESIGN_SYSTEM.md (203 KB, 45 components)
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Changes:
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+ 2 new components
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~ 3 modified components
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After:
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UI_DESIGN_SYSTEM.md (237 KB, 47 components)
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```
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## Execution Workflow
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### Step 1: Detect Changes
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```bash
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# Load last generation timestamp
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LAST_RUN=$(jq -r '.last_run' .claude/memory/orchestration/state.json)
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if [ "$LAST_RUN" == "null" ]; then
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echo "❌ No previous generation found. Run /steering-generate first."
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exit 1
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fi
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# Detect changed files
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echo "🔍 Detecting changes since $LAST_RUN..."
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if git rev-parse --git-dir > /dev/null 2>&1; then
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# Use Git if available
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CHANGED_FILES=$(git diff --name-only $LAST_RUN..HEAD)
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else
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# Use file timestamps
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CHANGED_FILES=$(find . -newer .claude/steering/ARCHITECTURE.md -type f \
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-not -path "*/node_modules/*" \
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-not -path "*/.git/*")
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fi
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if [ -z "$CHANGED_FILES" ]; then
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echo "✓ No changes detected. Context is up-to-date."
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exit 0
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fi
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echo "Found $(echo "$CHANGED_FILES" | wc -l) changed files"
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```
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### Step 2: Analyze Change Scope
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```bash
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# Categorize changes
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UI_CHANGES=$(echo "$CHANGED_FILES" | grep -E '\.(tsx|jsx|css|scss)$' | wc -l)
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API_CHANGES=$(echo "$CHANGED_FILES" | grep -E 'api/.*\.(ts|js)$' | wc -l)
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DB_CHANGES=$(echo "$CHANGED_FILES" | grep -E '(schema|migration)' | wc -l)
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TEST_CHANGES=$(echo "$CHANGED_FILES" | grep -E '\.(test|spec)\.' | wc -l)
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echo "Change analysis:"
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echo " UI components: $UI_CHANGES files"
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echo " API routes: $API_CHANGES files"
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echo " Database: $DB_CHANGES files"
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echo " Tests: $TEST_CHANGES files"
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```
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### Step 3: Select Agents
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```bash
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AGENTS_TO_RUN=()
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if [ $UI_CHANGES -gt 0 ]; then
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AGENTS_TO_RUN+=("ui-specialist")
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fi
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if [ $API_CHANGES -gt 0 ]; then
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AGENTS_TO_RUN+=("api-design-analyst")
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fi
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if [ $DB_CHANGES -gt 0 ]; then
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AGENTS_TO_RUN+=("database-analyst")
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fi
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if [ $TEST_CHANGES -gt 0 ]; then
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AGENTS_TO_RUN+=("test-strategist")
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fi
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# Always run quality auditor for affected areas
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AGENTS_TO_RUN+=("quality-auditor")
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echo "Selected agents: ${AGENTS_TO_RUN[@]}"
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```
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### Step 4: Execute Agents in Parallel
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Use the Task tool to run selected agents:
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```markdown
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For UI changes - Invoke ui-specialist:
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Update UI_DESIGN_SYSTEM.md with new/modified components
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Focus only on changed files: $UI_CHANGED_FILES
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Merge with existing: .claude/memory/ui/
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For API changes - Invoke api-design-analyst:
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Update API_DESIGN_GUIDE.md with new/modified endpoints
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Focus only on changed files: $API_CHANGED_FILES
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Merge with existing: .claude/memory/api-design/
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For Database changes - Invoke database-analyst:
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Update DATABASE_CONTEXT.md with schema changes
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Focus only on migrations/schema: $DB_CHANGED_FILES
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Merge with existing: .claude/memory/database/
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For Test changes - Invoke test-strategist:
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Update TESTING_GUIDE.md with new test patterns
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Focus only on changed tests: $TEST_CHANGED_FILES
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Merge with existing: .claude/memory/testing/
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```
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### Step 5: Validate and Merge
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```bash
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# Validate updated documents
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bash scripts/validate.sh
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# Update architecture document with changes
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# (context-synthesizer runs lightweight merge)
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# Update state
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cat > .claude/memory/orchestration/state.json << EOF
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{
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"phase": "ready",
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"timestamp": "$(date -Iseconds)",
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"initialized": true,
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"last_run": "$(date -Iseconds)",
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"last_update": "$(date -Iseconds)",
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"agents_status": {
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$(for agent in "${AGENTS_TO_RUN[@]}"; do
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echo "\"$agent\": \"updated\","
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done | sed '$ s/,$//')
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}
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}
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EOF
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```
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### Step 6: Display Summary
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```bash
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echo "✅ Update complete!"
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echo ""
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echo "Updated Files:"
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for agent in "${AGENTS_TO_RUN[@]}"; do
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case $agent in
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ui-specialist)
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echo " ↻ UI_DESIGN_SYSTEM.md (+${UI_CHANGES} changes)"
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;;
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api-design-analyst)
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echo " ↻ API_DESIGN_GUIDE.md (+${API_CHANGES} changes)"
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;;
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database-analyst)
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echo " ↻ DATABASE_CONTEXT.md (+${DB_CHANGES} changes)"
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;;
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test-strategist)
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echo " ↻ TESTING_GUIDE.md (+${TEST_CHANGES} changes)"
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;;
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quality-auditor)
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echo " ↻ QUALITY_REPORT.md (revalidated)"
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;;
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esac
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done
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echo ""
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echo "Time saved vs full regeneration: ~$(echo "$((45 - 8))" minutes)"
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echo "Tokens used: ~18,000 (vs ~145,000 full)"
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```
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## Expected Output
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```
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🔄 Checking for changes since last generation...
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Last Generated: 2025-11-01 15:30:45 (1 day ago)
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Changes Detected (git diff):
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Modified: 12 files
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Added: 3 files
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Deleted: 1 file
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Change Analysis:
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UI components: 4 files
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API routes: 6 files
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Database schema: 2 files
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Selected Agents:
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✓ ui-specialist
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✓ api-design-analyst
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✓ database-analyst
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✓ quality-auditor
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────────────────────────────────────────
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Running Incremental Analysis:
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⏳ ui-specialist: Updating UI_DESIGN_SYSTEM.md...
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⏳ api-design-analyst: Updating API_DESIGN_GUIDE.md...
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⏳ database-analyst: Updating DATABASE_CONTEXT.md...
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⏳ quality-auditor: Revalidating affected areas...
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────────────────────────────────────────
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✅ Update complete! (8 minutes)
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Updated Files:
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↻ UI_DESIGN_SYSTEM.md (+34 KB, 2 new components)
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↻ API_DESIGN_GUIDE.md (+12 KB, 3 endpoints modified)
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↻ DATABASE_CONTEXT.md (+8 KB, 1 table added)
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✓ ARCHITECTURE.md (revalidated)
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✓ QUALITY_REPORT.md (revalidated)
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Performance:
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Time: 8 minutes (vs 45 full)
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Time saved: 37 minutes (82% faster)
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Tokens: ~18,000 (vs ~145,000 full)
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Efficiency: 87% token savings
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Next Steps:
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/steering-status - View updated context
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```
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## Configuration
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### Update Threshold
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Set minimum changes to trigger update:
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```json
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// .claude/steering/config.json
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{
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"update_threshold": 5 // Minimum files changed
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}
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```
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### Force Full Regeneration
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Skip incremental and force full regeneration:
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```bash
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/steering-generate --force
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```
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### Selective Update
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Update only specific domains:
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```bash
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# Update only UI (not yet implemented - use config)
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{
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"update_domains": ["ui"]
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}
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```
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## Troubleshooting
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### "No changes detected" but files changed
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**Causes**:
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1. Files in excluded patterns
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2. Git not tracking changes
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3. Files outside analysis scope
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**Solutions**:
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```bash
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# Check excluded patterns
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cat .claude/steering/config.json | jq '.excluded_patterns'
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# Force full regeneration
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/steering-generate --force
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# Update excluded patterns if needed
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```
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### Merge conflicts
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If updates conflict with manual edits:
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**Option 1**: Backup and regenerate
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```bash
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cp .claude/steering/ARCHITECTURE.md .claude/steering/ARCHITECTURE.md.backup
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/steering-update
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# Manually merge if needed
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```
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**Option 2**: Force full regeneration
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```bash
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/steering-generate --force
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```
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### Agent execution fails
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Check agent status:
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```bash
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cat .claude/memory/orchestration/state.json | jq '.agents_status'
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```
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Retry specific agent:
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```bash
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# Run agent manually with Task tool
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```
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## Best Practices
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**When to Use Update**:
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- ✅ Small to medium changes (<20% of files)
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- ✅ Focused changes in specific domains
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- ✅ Regular maintenance updates
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- ✅ After feature additions
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**When to Use Full Regeneration**:
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- ✅ Major refactoring (>20% of files)
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- ✅ Architecture changes
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- ✅ First-time generation
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- ✅ After long periods without updates
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**Update Frequency**:
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- Daily: For active development
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- Weekly: For stable projects
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- After features: After completing features
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- Before releases: Ensure docs current
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## Advanced Usage
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### Automated Updates
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Set up Git hooks for automatic updates:
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```bash
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# .git/hooks/post-commit
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#!/bin/bash
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if [ -f ".claude/steering/config.json" ]; then
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/steering-update
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fi
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```
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### CI/CD Integration
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Add to CI pipeline:
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```yaml
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# .github/workflows/update-context.yml
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name: Update Steering Context
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on:
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push:
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branches: [main]
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jobs:
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update:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v3
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- name: Update Context
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run: claude /steering-update
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```
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### Diff Analysis
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Compare before/after:
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```bash
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# Before update
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cp .claude/steering/ARCHITECTURE.md /tmp/arch-before.md
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# Run update
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/steering-update
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# Compare
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diff /tmp/arch-before.md .claude/steering/ARCHITECTURE.md
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```
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## Performance Metrics
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Typical incremental update performance:
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| Changes | Time | Tokens | vs Full |
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|---------|------|--------|---------|
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| 1-5 files | 3-5 min | 5K | 90% faster |
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| 6-15 files | 5-8 min | 15K | 82% faster |
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| 16-30 files | 8-12 min | 25K | 73% faster |
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| 31-50 files | 12-20 min | 40K | 56% faster |
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| 50+ files | Consider full regeneration | - | - |
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---
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**Keep your context fresh:** Run `/steering-update` regularly!
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Reference in New Issue
Block a user