diff --git a/.codex/agents/ccw-loop-b-complete.md b/.codex/agents/ccw-loop-b-complete.md
new file mode 100644
index 00000000..bc696770
--- /dev/null
+++ b/.codex/agents/ccw-loop-b-complete.md
@@ -0,0 +1,227 @@
+# Worker: Complete (CCW Loop-B)
+
+Finalize session: summary generation, cleanup, commit preparation.
+
+## Responsibilities
+
+1. **Generate summary**
+   - Consolidate all progress
+   - Document achievements
+   - List changes
+
+2. **Review completeness**
+   - Check pending tasks
+   - Verify quality gates
+   - Ensure documentation
+
+3. **Prepare commit**
+   - Format commit message
+   - List changed files
+   - Suggest commit strategy
+
+4. **Cleanup**
+   - Archive progress files
+   - Update loop state
+   - Mark session complete
+
+## Input
+
+```
+LOOP CONTEXT:
+- All worker outputs
+- Progress files
+- Current state
+
+PROJECT CONTEXT:
+- Git repository state
+- Recent commits
+- Project conventions
+```
+
+## Execution Steps
+
+1. **Read all progress**
+   - Load worker outputs from `.loop/{loopId}.workers/`
+   - Read progress files from `.loop/{loopId}.progress/`
+   - Consolidate findings
+
+2. **Verify completeness**
+   - Check all tasks completed
+   - Verify tests passed
+   - Confirm quality gates
+
+3. **Generate summary**
+   - Create achievement list
+   - Document changes
+   - Highlight key points
+
+4. **Prepare commit**
+   - Write commit message
+   - List files changed
+   - Suggest branch strategy
+
+5. **Cleanup state**
+   - Archive progress
+   - Update loop status
+   - Output completion
+
+## Output Format
+
+```
+WORKER_RESULT:
+- action: complete
+- status: success | partial | failed
+- summary: "Completed X tasks, implemented Y features, all tests pass"
+- files_changed: []
+- next_suggestion: null
+- loop_back_to: null
+
+SESSION_SUMMARY:
+  loop_id: "loop-b-20260122-abc123"
+  task: "Implement user authentication"
+  duration: "45 minutes"
+  iterations: 5
+  
+  achievements:
+    - Implemented login/logout functions
+    - Added JWT token handling
+    - Wrote 15 unit tests (100% coverage)
+    - Fixed 2 security vulnerabilities
+  
+  files_changed:
+    - src/auth.ts (created, +180 lines)
+    - src/utils.ts (modified, +45/-10 lines)
+    - tests/auth.test.ts (created, +150 lines)
+  
+  test_results:
+    total: 113
+    passed: 113
+    failed: 0
+    coverage: "95%"
+  
+  quality_checks:
+    lint: ✓ Pass
+    types: ✓ Pass
+    security: ✓ Pass
+
+COMMIT_SUGGESTION:
+  message: |
+    feat: Implement user authentication
+    
+    - Add login/logout functions with session management
+    - Implement JWT token encode/decode utilities
+    - Create comprehensive test suite (15 tests)
+    - Fix password hashing security issue
+    
+    All tests pass. Coverage: 95%
+  
+  files:
+    - src/auth.ts
+    - src/utils.ts
+    - tests/auth.test.ts
+  
+  branch_strategy: "feature/user-auth"
+  ready_for_pr: true
+
+PENDING_TASKS:
+  - None (all tasks completed)
+
+RECOMMENDATIONS:
+  - Create PR after commit
+  - Request code review from security team
+  - Update documentation in README
+```
+
+## Summary File Template
+
+```markdown
+# Session Summary - loop-b-20260122-abc123
+
+**Task**: Implement user authentication
+
+**Date**: 2026-01-22  
+**Duration**: 45 minutes  
+**Status**: ✓ Completed
+
+---
+
+## Achievements
+
+✓ Implemented login/logout functions with session management  
+✓ Added JWT token encode/decode utilities  
+✓ Created comprehensive test suite (15 tests, 100% coverage)  
+✓ Fixed 2 security vulnerabilities (password hashing, session expiry)  
+
+## Files Changed
+
+| File | Type | Changes |
+|------|------|---------|
+| `src/auth.ts` | Created | +180 lines |
+| `src/utils.ts` | Modified | +45/-10 lines |
+| `tests/auth.test.ts` | Created | +150 lines |
+
+## Metrics
+
+- **Tests**: 113 total, 113 passed, 0 failed
+- **Coverage**: 95%
+- **Lint**: 0 errors
+- **Types**: 0 errors
+- **Security**: 0 vulnerabilities
+
+## Execution Flow
+
+1. **Init** (1 iteration): Task breakdown, plan created
+2. **Develop** (2 iterations): Implemented auth module + utils
+3. **Validate** (1 iteration): Tests all pass
+4. **Complete** (1 iteration): Summary + cleanup
+
+Total iterations: 5 (within 10 max)
+
+## Commit Message
+
+```
+feat: Implement user authentication
+
+- Add login/logout functions with session management
+- Implement JWT token encode/decode utilities
+- Create comprehensive test suite (15 tests)
+- Fix password hashing security issue
+
+All tests pass. Coverage: 95%
+```
+
+## Next Steps
+
+- [ ] Create PR from `feature/user-auth`
+- [ ] Request code review (tag: @security-team)
+- [ ] Update documentation
+- [ ] Deploy to staging after merge
+```
+
+## Rules
+
+- **Verify completion**: Check all tasks done, tests pass
+- **Comprehensive summary**: Include all achievements
+- **Format commit**: Follow project conventions
+- **Document clearly**: Make summary readable
+- **No leftover tasks**: All pending tasks resolved
+- **Quality gates**: Ensure all checks pass
+- **Actionable next steps**: Suggest follow-up actions
+
+## Error Handling
+
+| Situation | Action |
+|-----------|--------|
+| Pending tasks remain | Mark status: "partial", list pending |
+| Tests failing | Mark status: "failed", suggest debug |
+| Quality gates fail | List failing checks, suggest fixes |
+| Missing documentation | Flag as recommendation |
+
+## Best Practices
+
+1. Read ALL worker outputs
+2. Verify completeness thoroughly
+3. Create detailed summary
+4. Format commit message properly
+5. Suggest clear next steps
+6. Archive progress for future reference
diff --git a/.codex/agents/ccw-loop-b-debug.md b/.codex/agents/ccw-loop-b-debug.md
new file mode 100644
index 00000000..322a8004
--- /dev/null
+++ b/.codex/agents/ccw-loop-b-debug.md
@@ -0,0 +1,172 @@
+# Worker: Debug (CCW Loop-B)
+
+Diagnose and analyze issues: root cause analysis, hypothesis testing, problem solving.
+
+## Responsibilities
+
+1. **Issue diagnosis**
+   - Understand problem symptoms
+   - Trace execution flow
+   - Identify root cause
+
+2. **Hypothesis testing**
+   - Form hypothesis
+   - Verify with evidence
+   - Narrow down cause
+
+3. **Analysis documentation**
+   - Record findings
+   - Explain failure mechanism
+   - Suggest fixes
+
+4. **Fix recommendations**
+   - Provide actionable solutions
+   - Include code examples
+   - Explain tradeoffs
+
+## Input
+
+```
+LOOP CONTEXT:
+- Issue description
+- Error messages
+- Reproduction steps
+
+PROJECT CONTEXT:
+- Tech stack
+- Related code
+- Previous findings
+```
+
+## Execution Steps
+
+1. **Understand the problem**
+   - Read issue description
+   - Analyze error messages
+   - Identify symptom vs root cause
+
+2. **Gather evidence**
+   - Examine relevant code
+   - Check logs and traces
+   - Review recent changes
+
+3. **Form hypothesis**
+   - Propose root cause
+   - Identify confidence level
+   - Note assumptions
+
+4. **Test hypothesis**
+   - Trace code execution
+   - Verify with evidence
+   - Adjust hypothesis if needed
+
+5. **Document findings**
+   - Write analysis
+   - Create fix recommendations
+   - Suggest verification steps
+
+## Output Format
+
+```
+WORKER_RESULT:
+- action: debug
+- status: success | needs_more_info | inconclusive
+- summary: "Root cause identified: [brief summary]"
+- files_changed: []
+- next_suggestion: develop (apply fixes) | debug (continue) | validate
+- loop_back_to: null
+
+ROOT_CAUSE_ANALYSIS:
+  hypothesis: "Connection listener accumulation causes memory leak"
+  confidence: "high | medium | low"
+  evidence:
+    - "Event listener count grows from X to Y"
+    - "No cleanup on disconnect in code.ts:line"
+  mechanism: "Detailed explanation of failure mechanism"
+
+FIX_RECOMMENDATIONS:
+  1. Fix: "Add event.removeListener in disconnect handler"
+     code_snippet: |
+       connection.on('disconnect', () => {
+         connection.removeAllListeners()
+       })
+     reason: "Prevent accumulation of listeners"
+  
+  2. Fix: "Use weak references for event storage"
+     impact: "Reduces memory footprint"
+     risk: "medium - requires testing"
+
+VERIFICATION_STEPS:
+  - Monitor memory usage before/after fix
+  - Run load test with 5000 connections
+  - Verify cleanup in profiler
+```
+
+## Progress File Template
+
+```markdown
+# Debug Progress - {timestamp}
+
+## Issue Analysis
+
+**Problem**: Memory leak after 24h runtime
+
+**Error**: OOM crash at 2GB memory usage
+
+## Investigation
+
+### Step 1: Event Listener Analysis ✓
+- Examined WebSocket connection handler
+- Found 50+ listeners accumulating per connection
+
+### Step 2: Disconnect Flow Analysis ✓
+- Traced disconnect sequence
+- Identified missing cleanup: `connection.removeAllListeners()`
+
+## Root Cause
+
+Event listeners from previous connections NOT cleaned up on disconnect.
+
+Each connection keeps ~50 listener references in memory even after disconnect.
+
+After 24h with ~100k connections: 50 * 100k = 5M listener references = memory exhaustion.
+
+## Recommended Fixes
+
+1. **Primary**: Add `removeAllListeners()` in disconnect handler
+2. **Secondary**: Implement weak reference tracking
+3. **Verification**: Monitor memory in production load test
+
+## Risk Assessment
+
+- **Risk of fix**: Low - cleanup is standard practice
+- **Risk if unfixed**: Critical - OOM crash daily
+```
+
+## Rules
+
+- **Follow evidence**: Only propose conclusions backed by analysis
+- **Trace code carefully**: Don't guess execution flow
+- **Form hypotheses explicitly**: State assumptions
+- **Test thoroughly**: Verify before concluding
+- **Confidence levels**: Clearly indicate certainty
+- **No bandaid fixes**: Address root cause, not symptoms
+- **Document clearly**: Explain mechanism, not just symptoms
+
+## Error Handling
+
+| Situation | Action |
+|-----------|--------|
+| Insufficient info | Output what known, ask coordinator for more data |
+| Multiple hypotheses | Rank by likelihood, suggest test order |
+| Inconclusive evidence | Mark as "needs_more_info", suggest investigation areas |
+| Blocked investigation | Request develop worker to add logging |
+
+## Best Practices
+
+1. Understand problem fully before hypothesizing
+2. Form explicit hypothesis before testing
+3. Let evidence guide investigation
+4. Document all findings clearly
+5. Suggest verification steps
+6. Indicate confidence in conclusion
diff --git a/.codex/agents/ccw-loop-b-develop.md b/.codex/agents/ccw-loop-b-develop.md
new file mode 100644
index 00000000..6561c6f1
--- /dev/null
+++ b/.codex/agents/ccw-loop-b-develop.md
@@ -0,0 +1,147 @@
+# Worker: Develop (CCW Loop-B)
+
+Execute implementation tasks: code writing, refactoring, file modifications.
+
+## Responsibilities
+
+1. **Code implementation**
+   - Follow project conventions
+   - Match existing patterns
+   - Write clean, maintainable code
+
+2. **File operations**
+   - Create new files when needed
+   - Edit existing files carefully
+   - Maintain project structure
+
+3. **Progress tracking**
+   - Update progress file after each task
+   - Document changes clearly
+   - Track completion status
+
+4. **Quality assurance**
+   - Follow coding standards
+   - Add appropriate comments
+   - Ensure backward compatibility
+
+## Input
+
+```
+LOOP CONTEXT:
+- Task description
+- Current state
+- Pending tasks list
+
+PROJECT CONTEXT:
+- Tech stack
+- Guidelines
+- Existing patterns
+```
+
+## Execution Steps
+
+1. **Read task context**
+   - Load pending tasks from state
+   - Understand requirements
+
+2. **Find existing patterns**
+   - Search for similar implementations
+   - Identify utilities and helpers
+   - Match coding style
+
+3. **Implement tasks**
+   - One task at a time
+   - Test incrementally
+   - Document progress
+
+4. **Update tracking**
+   - Write to progress file
+   - Update worker output
+   - Mark tasks completed
+
+## Output Format
+
+```
+WORKER_RESULT:
+- action: develop
+- status: success | needs_input | failed
+- summary: "Implemented X tasks, modified Y files"
+- files_changed: ["src/auth.ts", "src/utils.ts"]
+- next_suggestion: validate | debug | develop (continue)
+- loop_back_to: null (or "develop" if partial completion)
+
+DETAILED_OUTPUT:
+  tasks_completed:
+    - id: T1
+      description: "Create auth module"
+      files: ["src/auth.ts"]
+      status: success
+    
+    - id: T2
+      description: "Add JWT utils"
+      files: ["src/utils.ts"]
+      status: success
+  
+  metrics:
+    lines_added: 150
+    lines_removed: 20
+    files_modified: 2
+  
+  pending_tasks:
+    - id: T3
+      description: "Add error handling"
+```
+
+## Progress File Template
+
+```markdown
+# Develop Progress - {timestamp}
+
+## Tasks Completed
+
+### T1: Create auth module ✓
+- Created `src/auth.ts`
+- Implemented login/logout functions
+- Added session management
+
+### T2: Add JWT utils ✓
+- Updated `src/utils.ts`
+- Added token encode/decode
+- Integrated with auth module
+
+## Pending Tasks
+
+- T3: Add error handling
+- T4: Write tests
+
+## Next Steps
+
+Run validation to ensure implementations work correctly.
+```
+
+## Rules
+
+- **Never assume**: Read files before editing
+- **Follow patterns**: Match existing code style
+- **Test incrementally**: Verify changes work
+- **Document clearly**: Update progress after each task
+- **No over-engineering**: Only implement what's asked
+- **Backward compatible**: Don't break existing functionality
+- **Clean commits**: Each task should be commit-ready
+
+## Error Handling
+
+| Situation | Action |
+|-----------|--------|
+| File not found | Search codebase, ask coordinator |
+| Pattern unclear | Read 3 similar examples first |
+| Task blocked | Mark as blocked, suggest debug action |
+| Partial completion | Output progress, set loop_back_to: "develop" |
+
+## Best Practices
+
+1. Read before write
+2. Find existing patterns first
+3. Implement smallest working unit
+4. Update progress immediately
+5. Suggest next action based on state
diff --git a/.codex/agents/ccw-loop-b-init.md b/.codex/agents/ccw-loop-b-init.md
new file mode 100644
index 00000000..ae98a133
--- /dev/null
+++ b/.codex/agents/ccw-loop-b-init.md
@@ -0,0 +1,82 @@
+# Worker: Init (CCW Loop-B)
+
+Initialize session, parse task requirements, prepare execution environment.
+
+## Responsibilities
+
+1. **Read project context**
+   - `.workflow/project-tech.json` - Technology stack
+   - `.workflow/project-guidelines.json` - Project conventions
+   - `package.json` / build config
+
+2. **Parse task requirements**
+   - Break down task into phases
+   - Identify dependencies
+   - Determine resource needs (files, tools, etc.)
+
+3. **Prepare environment**
+   - Create progress tracking structure
+   - Initialize working directories
+   - Set up logging
+
+4. **Generate execution plan**
+   - Create task breakdown
+   - Estimate effort
+   - Suggest execution sequence
+
+## Input
+
+```
+LOOP CONTEXT:
+- Loop ID
+- Task description
+- Current state
+
+PROJECT CONTEXT:
+- Tech stack
+- Guidelines
+```
+
+## Execution Steps
+
+1. Read context files
+2. Analyze task description
+3. Create task breakdown
+4. Identify prerequisites
+5. Generate execution plan
+6. Output WORKER_RESULT
+
+## Output Format
+
+```
+WORKER_RESULT:
+- action: init
+- status: success | failed
+- summary: "Initialized session with X tasks"
+- files_changed: []
+- next_suggestion: develop | debug | complete
+- loop_back_to: null
+
+TASK_BREAKDOWN:
+- Phase 1: [description + effort]
+- Phase 2: [description + effort]
+- Phase 3: [description + effort]
+
+EXECUTION_PLAN:
+1. Develop: Implement core functionality
+2. Validate: Run tests
+3. Complete: Summary and review
+
+PREREQUISITES:
+- Existing files that need reading
+- External dependencies
+- Setup steps
+```
+
+## Rules
+
+- Never skip context file reading
+- Always validate task requirements
+- Create detailed breakdown for coordinator
+- Be explicit about assumptions
+- Flag blockers immediately
diff --git a/.codex/agents/ccw-loop-b-validate.md b/.codex/agents/ccw-loop-b-validate.md
new file mode 100644
index 00000000..a61f745d
--- /dev/null
+++ b/.codex/agents/ccw-loop-b-validate.md
@@ -0,0 +1,204 @@
+# Worker: Validate (CCW Loop-B)
+
+Execute validation: tests, coverage analysis, quality gates.
+
+## Responsibilities
+
+1. **Test execution**
+   - Run unit tests
+   - Run integration tests
+   - Check test results
+
+2. **Coverage analysis**
+   - Measure coverage
+   - Identify gaps
+   - Suggest improvements
+
+3. **Quality checks**
+   - Lint/format check
+   - Type checking
+   - Security scanning
+
+4. **Results reporting**
+   - Document test results
+   - Flag failures
+   - Suggest improvements
+
+## Input
+
+```
+LOOP CONTEXT:
+- Files to validate
+- Test configuration
+- Coverage requirements
+
+PROJECT CONTEXT:
+- Tech stack
+- Test framework
+- CI/CD config
+```
+
+## Execution Steps
+
+1. **Prepare environment**
+   - Identify test framework
+   - Check test configuration
+   - Build if needed
+
+2. **Run tests**
+   - Execute unit tests
+   - Execute integration tests
+   - Capture results
+
+3. **Analyze results**
+   - Count passed/failed
+   - Measure coverage
+   - Identify failure patterns
+
+4. **Quality assessment**
+   - Check lint results
+   - Verify type safety
+   - Review security checks
+
+5. **Generate report**
+   - Document findings
+   - Suggest fixes for failures
+   - Output recommendations
+
+## Output Format
+
+```
+WORKER_RESULT:
+- action: validate
+- status: success | failed | needs_fix
+- summary: "98 tests passed, 2 failed; coverage 85%"
+- files_changed: []
+- next_suggestion: develop (fix failures) | complete (all pass) | debug (investigate)
+- loop_back_to: null
+
+TEST_RESULTS:
+  unit_tests:
+    passed: 98
+    failed: 2
+    skipped: 0
+    duration: "12.5s"
+  
+  integration_tests:
+    passed: 15
+    failed: 0
+    duration: "8.2s"
+  
+  coverage:
+    overall: "85%"
+    lines: "88%"
+    branches: "82%"
+    functions: "90%"
+    statements: "87%"
+
+FAILURES:
+  1. Test: "auth.login should reject invalid password"
+     Error: "Assertion failed: expected false to equal true"
+     Location: "tests/auth.test.ts:45"
+     Suggested fix: "Check password validation logic in src/auth.ts"
+  
+  2. Test: "utils.formatDate should handle timezones"
+     Error: "Expected 2026-01-22T10:00 but got 2026-01-22T09:00"
+     Location: "tests/utils.test.ts:120"
+     Suggested fix: "Timezone conversion in formatDate needs UTC adjustment"
+
+COVERAGE_GAPS:
+  - src/auth.ts (line 45-52): Error handling not covered
+  - src/utils.ts (line 100-105): Edge case handling missing
+
+QUALITY_CHECKS:
+  lint: ✓ Passed (0 errors)
+  types: ✓ Passed (no type errors)
+  security: ✓ Passed (0 vulnerabilities)
+```
+
+## Progress File Template
+
+```markdown
+# Validate Progress - {timestamp}
+
+## Test Execution Summary
+
+### Unit Tests ✓
+- **98 passed**, 2 failed, 0 skipped
+- **Duration**: 12.5s
+- **Status**: Needs fix
+
+### Integration Tests ✓
+- **15 passed**, 0 failed
+- **Duration**: 8.2s
+- **Status**: All pass
+
+## Coverage Report
+
+```
+Statements   : 87% ( 130/150 )
+Branches     : 82% ( 41/50 )
+Functions    : 90% ( 45/50 )
+Lines        : 88% ( 132/150 )
+```
+
+**Coverage Gaps**:
+- `src/auth.ts` (lines 45-52): Error handling
+- `src/utils.ts` (lines 100-105): Edge cases
+
+## Test Failures
+
+### Failure 1: auth.login should reject invalid password
+- **Error**: Assertion failed
+- **File**: `tests/auth.test.ts:45`
+- **Root cause**: Password validation not working
+- **Fix**: Check SHA256 hashing in `src/auth.ts:102`
+
+### Failure 2: utils.formatDate should handle timezones
+- **Error**: Expected 2026-01-22T10:00 but got 2026-01-22T09:00
+- **File**: `tests/utils.test.ts:120`
+- **Root cause**: UTC offset not applied correctly
+- **Fix**: Update timezone calculation in `formatDate()`
+
+## Quality Checks
+
+| Check | Result | Status |
+|-------|--------|--------|
+| ESLint | 0 errors | ✓ Pass |
+| TypeScript | No errors | ✓ Pass |
+| Security Audit | 0 vulnerabilities | ✓ Pass |
+
+## Recommendations
+
+1. **Fix test failures** (2 tests failing)
+2. **Improve coverage** for error handling paths
+3. **Add integration tests** for critical flows
+```
+
+## Rules
+
+- **Run all tests**: Don't skip or filter
+- **Be thorough**: Check coverage and quality metrics
+- **Document failures**: Provide actionable suggestions
+- **Test environment**: Use consistent configuration
+- **No workarounds**: Fix real issues, don't skip tests
+- **Verify fixes**: Re-run after changes
+- **Clean reports**: Output clear, actionable results
+
+## Error Handling
+
+| Situation | Action |
+|-----------|--------|
+| Test framework not found | Identify from package.json, install if needed |
+| Tests fail | Document failures, suggest fixes |
+| Coverage below threshold | Flag coverage gaps, suggest tests |
+| Build failure | Trace to source, suggest debugging |
+
+## Best Practices
+
+1. Run complete test suite
+2. Measure coverage thoroughly
+3. Document all failures clearly
+4. Provide specific fix suggestions
+5. Check quality metrics
+6. Suggest follow-up validation steps
diff --git a/.codex/commands/workflow/clean.md b/.codex/commands/workflow/clean.md
new file mode 100644
index 00000000..ec8c1f80
--- /dev/null
+++ b/.codex/commands/workflow/clean.md
@@ -0,0 +1,581 @@
+---
+name: clean
+description: Intelligent code cleanup with mainline detection, stale artifact discovery, and safe execution (Codex version)
+argument-hint: "[--dry-run] [\"focus area\"]"
+---
+
+# Clean Command (/workflow:clean) - Codex Version
+
+## Overview
+
+Intelligent cleanup command that explores the codebase to identify the development mainline, discovers artifacts that have drifted from it, and safely removes stale sessions, abandoned documents, and dead code.
+
+**Core capabilities:**
+- Mainline detection: Identify active development branches and core modules
+- Drift analysis: Find sessions, documents, and code that deviate from mainline
+- Intelligent discovery: cli-explore-agent based artifact scanning (using Codex subagent)
+- Safe execution: Confirmation-based cleanup with dry-run preview
+
+## Usage
+
+```bash
+/workflow:clean                          # Full intelligent cleanup (explore → analyze → confirm → execute)
+/workflow:clean --dry-run                # Explore and analyze only, no execution
+/workflow:clean "auth module"            # Focus cleanup on specific area
+```
+
+## Execution Process
+
+```
+Phase 1: Mainline Detection
+   ├─ Analyze git history for development trends
+   ├─ Identify core modules (high commit frequency)
+   ├─ Map active vs stale branches
+   └─ Build mainline profile
+
+Phase 2: Drift Discovery (Codex cli-explore-agent)
+   ├─ spawn_agent with role path
+   ├─ Scan workflow sessions for orphaned artifacts
+   ├─ Identify documents drifted from mainline
+   ├─ Detect dead code and unused exports
+   ├─ wait() for results
+   └─ Generate cleanup manifest
+
+Phase 3: Confirmation
+   ├─ Display cleanup summary by category
+   ├─ Show impact analysis (files, size, risk)
+   └─ AskUserQuestion: Select categories to clean
+
+Phase 4: Execution (unless --dry-run)
+   ├─ Execute cleanup by category
+   ├─ Update manifests and indexes
+   └─ Report results
+```
+
+## Implementation
+
+### Phase 1: Mainline Detection
+
+**Session Setup**:
+```javascript
+const getUtc8ISOString = () => new Date(Date.now() + 8 * 60 * 60 * 1000).toISOString()
+
+const dateStr = getUtc8ISOString().substring(0, 10)
+const sessionId = `clean-${dateStr}`
+const sessionFolder = `.workflow/.clean/${sessionId}`
+
+Bash(`mkdir -p ${sessionFolder}`)
+```
+
+**Step 1.1: Git History Analysis**
+```bash
+# Get commit frequency by directory (last 30 days)
+bash(git log --since="30 days ago" --name-only --pretty=format: | grep -v "^$" | cut -d/ -f1-2 | sort | uniq -c | sort -rn | head -20)
+
+# Get recent active branches
+bash(git for-each-ref --sort=-committerdate refs/heads/ --format='%(refname:short) %(committerdate:relative)' | head -10)
+
+# Get files with most recent changes
+bash(git log --since="7 days ago" --name-only --pretty=format: | grep -v "^$" | sort | uniq -c | sort -rn | head -30)
+```
+
+**Step 1.2: Build Mainline Profile**
+```javascript
+const mainlineProfile = {
+  coreModules: [],        // High-frequency directories
+  activeFiles: [],        // Recently modified files
+  activeBranches: [],     // Branches with recent commits
+  staleThreshold: {
+    sessions: 7,          // Days
+    branches: 30,
+    documents: 14
+  },
+  timestamp: getUtc8ISOString()
+}
+
+// Parse git log output to identify core modules
+// Modules with >5 commits in last 30 days = core
+// Modules with 0 commits in last 30 days = potentially stale
+
+Write(`${sessionFolder}/mainline-profile.json`, JSON.stringify(mainlineProfile, null, 2))
+```
+
+---
+
+### Phase 2: Drift Discovery (Codex Subagent)
+
+**Codex Implementation: spawn_agent + wait**
+
+```javascript
+// Step 1: Launch cli-explore-agent (role path传递)
+const exploreAgent = spawn_agent({
+  message: `
+## TASK ASSIGNMENT
+
+### MANDATORY FIRST STEPS (Agent Execute)
+1. **Read role definition**: ~/.codex/agents/cli-explore-agent.md (MUST read first)
+2. Read: .workflow/project-tech.json
+3. Read: .workflow/project-guidelines.json
+
+---
+
+## Task Objective
+Discover artifacts that have drifted from the development mainline. Identify stale sessions, abandoned documents, and dead code for cleanup.
+
+## Context
+- **Session Folder**: ${sessionFolder}
+- **Mainline Profile**: ${sessionFolder}/mainline-profile.json
+- **Focus Area**: ${focusArea || "全项目"}
+
+## Discovery Categories
+
+### Category 1: Stale Workflow Sessions
+Scan and analyze workflow session directories:
+
+**Locations to scan**:
+- .workflow/active/WFS-* (active sessions)
+- .workflow/archives/WFS-* (archived sessions)
+- .workflow/.lite-plan/* (lite-plan sessions)
+- .workflow/.debug/DBG-* (debug sessions)
+
+**Staleness criteria**:
+- Active sessions: No modification >7 days + no related git commits
+- Archives: >30 days old + no feature references in project-tech.json
+- Lite-plan: >7 days old + plan.json not executed
+- Debug: >3 days old + issue not in recent commits
+
+**Analysis steps**:
+1. List all session directories with modification times
+2. Cross-reference with git log (are session topics in recent commits?)
+3. Check manifest.json for orphan entries
+4. Identify sessions with .archiving marker (interrupted)
+
+### Category 2: Drifted Documents
+Scan documentation that no longer aligns with code:
+
+**Locations to scan**:
+- .claude/rules/tech/* (generated tech rules)
+- .workflow/.scratchpad/* (temporary notes)
+- **/CLAUDE.md (module documentation)
+- **/README.md (outdated descriptions)
+
+**Drift criteria**:
+- Tech rules: Referenced files no longer exist
+- Scratchpad: Any file (always temporary)
+- Module docs: Describe functions/classes that were removed
+- READMEs: Reference deleted directories
+
+**Analysis steps**:
+1. Parse document content for file/function references
+2. Verify referenced entities still exist in codebase
+3. Flag documents with >30% broken references
+
+### Category 3: Dead Code
+Identify code that is no longer used:
+
+**Scan patterns**:
+- Unused exports (exported but never imported)
+- Orphan files (not imported anywhere)
+- Commented-out code blocks (>10 lines)
+- TODO/FIXME comments >90 days old
+
+**Analysis steps**:
+1. Build import graph using rg/grep
+2. Identify exports with no importers
+3. Find files not in import graph
+4. Scan for large comment blocks
+
+## Output Format
+
+Write to: ${sessionFolder}/cleanup-manifest.json
+
+\`\`\`json
+{
+  "generated_at": "ISO timestamp",
+  "mainline_summary": {
+    "core_modules": ["src/core", "src/api"],
+    "active_branches": ["main", "feature/auth"],
+    "health_score": 0.85
+  },
+  "discoveries": {
+    "stale_sessions": [
+      {
+        "path": ".workflow/active/WFS-old-feature",
+        "type": "active",
+        "age_days": 15,
+        "reason": "No related commits in 15 days",
+        "size_kb": 1024,
+        "risk": "low"
+      }
+    ],
+    "drifted_documents": [
+      {
+        "path": ".claude/rules/tech/deprecated-lib",
+        "type": "tech_rules",
+        "broken_references": 5,
+        "total_references": 6,
+        "drift_percentage": 83,
+        "reason": "Referenced library removed",
+        "risk": "low"
+      }
+    ],
+    "dead_code": [
+      {
+        "path": "src/utils/legacy.ts",
+        "type": "orphan_file",
+        "reason": "Not imported by any file",
+        "last_modified": "2025-10-01",
+        "risk": "medium"
+      }
+    ]
+  },
+  "summary": {
+    "total_items": 12,
+    "total_size_mb": 45.2,
+    "by_category": {
+      "stale_sessions": 5,
+      "drifted_documents": 4,
+      "dead_code": 3
+    },
+    "by_risk": {
+      "low": 8,
+      "medium": 3,
+      "high": 1
+    }
+  }
+}
+\`\`\`
+
+## Execution Commands
+
+\`\`\`bash
+# Session directories
+find .workflow -type d -name "WFS-*" -o -name "DBG-*" 2>/dev/null
+
+# Check modification times (Linux/Mac)
+stat -c "%Y %n" .workflow/active/WFS-* 2>/dev/null
+
+# Check modification times (Windows PowerShell via bash)
+powershell -Command "Get-ChildItem '.workflow/active/WFS-*' | ForEach-Object { Write-Output \\\"$($_.LastWriteTime) $($_.FullName)\\\" }"
+
+# Find orphan exports (TypeScript)
+rg "export (const|function|class|interface|type)" --type ts -l
+
+# Find imports
+rg "import.*from" --type ts
+
+# Find large comment blocks
+rg "^\\\\s*/\\\\*" -A 10 --type ts
+
+# Find old TODOs
+rg "TODO|FIXME" --type ts -n
+\`\`\`
+
+## Success Criteria
+- [ ] All session directories scanned with age calculation
+- [ ] Documents cross-referenced with existing code
+- [ ] Dead code detection via import graph analysis
+- [ ] cleanup-manifest.json written with complete data
+- [ ] Each item has risk level and cleanup reason
+`
+})
+
+// Step 2: Wait for discovery results (阻塞等待)
+const exploreResult = wait({
+  ids: [exploreAgent],
+  timeout_ms: 600000  // 10 minutes
+})
+
+// Step 3: Check timeout
+if (exploreResult.timed_out) {
+  console.log('⚠️ Discovery agent timed out. Continuing to wait or using partial results...')
+  // Option 1: Continue waiting
+  const retryResult = wait({ ids: [exploreAgent], timeout_ms: 300000 })
+  
+  // Option 2: Send催促 message
+  // send_input({ id: exploreAgent, message: "Please complete the analysis and output cleanup-manifest.json." })
+  // const催促Result = wait({ ids: [exploreAgent], timeout_ms: 300000 })
+}
+
+// Step 4: Verify manifest file exists
+const manifestExists = Bash(`test -f ${sessionFolder}/cleanup-manifest.json && echo "exists"`)
+if (!manifestExists.includes('exists')) {
+  console.error('❌ Error: cleanup-manifest.json not generated by exploration agent')
+  close_agent({ id: exploreAgent })
+  return
+}
+
+// Step 5: Cleanup agent (任务完成后清理)
+close_agent({ id: exploreAgent })
+```
+
+**Key Differences from Claude Task**:
+1. **Role loading**: Path passed in `MANDATORY FIRST STEPS`, agent reads file itself
+2. **Explicit wait**: Use `wait({ ids })` instead of synchronous Task return
+3. **Timeout handling**: Handle `timed_out` scenario with retry or催促
+4. **Explicit cleanup**: Call `close_agent()` after task completion
+
+---
+
+### Phase 3: Confirmation
+
+**Step 3.1: Display Summary**
+```javascript
+const manifest = JSON.parse(Read(`${sessionFolder}/cleanup-manifest.json`))
+
+console.log(`
+## Cleanup Discovery Report
+
+**Mainline Health**: ${Math.round(manifest.mainline_summary.health_score * 100)}%
+**Core Modules**: ${manifest.mainline_summary.core_modules.join(', ')}
+
+### Summary
+| Category | Count | Size | Risk |
+|----------|-------|------|------|
+| Stale Sessions | ${manifest.summary.by_category.stale_sessions} | - | ${getRiskSummary('sessions')} |
+| Drifted Documents | ${manifest.summary.by_category.drifted_documents} | - | ${getRiskSummary('documents')} |
+| Dead Code | ${manifest.summary.by_category.dead_code} | - | ${getRiskSummary('code')} |
+
+**Total**: ${manifest.summary.total_items} items, ~${manifest.summary.total_size_mb} MB
+
+### Stale Sessions
+${manifest.discoveries.stale_sessions.map(s =>
+  `- ${s.path} (${s.age_days}d, ${s.risk}): ${s.reason}`
+).join('\n')}
+
+### Drifted Documents
+${manifest.discoveries.drifted_documents.map(d =>
+  `- ${d.path} (${d.drift_percentage}% broken, ${d.risk}): ${d.reason}`
+).join('\n')}
+
+### Dead Code
+${manifest.discoveries.dead_code.map(c =>
+  `- ${c.path} (${c.type}, ${c.risk}): ${c.reason}`
+).join('\n')}
+`)
+```
+
+**Step 3.2: Dry-Run Exit**
+```javascript
+if (flags.includes('--dry-run')) {
+  console.log(`
+---
+**Dry-run mode**: No changes made.
+Manifest saved to: ${sessionFolder}/cleanup-manifest.json
+
+To execute cleanup: /workflow:clean
+`)
+  return
+}
+```
+
+**Step 3.3: User Confirmation**
+```javascript
+AskUserQuestion({
+  questions: [
+    {
+      question: "Which categories to clean?",
+      header: "Categories",
+      multiSelect: true,
+      options: [
+        {
+          label: "Sessions",
+          description: `${manifest.summary.by_category.stale_sessions} stale workflow sessions`
+        },
+        {
+          label: "Documents",
+          description: `${manifest.summary.by_category.drifted_documents} drifted documents`
+        },
+        {
+          label: "Dead Code",
+          description: `${manifest.summary.by_category.dead_code} unused code files`
+        }
+      ]
+    },
+    {
+      question: "Risk level to include?",
+      header: "Risk",
+      multiSelect: false,
+      options: [
+        { label: "Low only", description: "Safest - only obviously stale items" },
+        { label: "Low + Medium", description: "Recommended - includes likely unused items" },
+        { label: "All", description: "Aggressive - includes high-risk items" }
+      ]
+    }
+  ]
+})
+```
+
+---
+
+### Phase 4: Execution
+
+**Step 4.1: Filter Items by Selection**
+```javascript
+const selectedCategories = userSelection.categories  // ['Sessions', 'Documents', ...]
+const riskLevel = userSelection.risk                 // 'Low only', 'Low + Medium', 'All'
+
+const riskFilter = {
+  'Low only': ['low'],
+  'Low + Medium': ['low', 'medium'],
+  'All': ['low', 'medium', 'high']
+}[riskLevel]
+
+const itemsToClean = []
+
+if (selectedCategories.includes('Sessions')) {
+  itemsToClean.push(...manifest.discoveries.stale_sessions.filter(s => riskFilter.includes(s.risk)))
+}
+if (selectedCategories.includes('Documents')) {
+  itemsToClean.push(...manifest.discoveries.drifted_documents.filter(d => riskFilter.includes(d.risk)))
+}
+if (selectedCategories.includes('Dead Code')) {
+  itemsToClean.push(...manifest.discoveries.dead_code.filter(c => riskFilter.includes(c.risk)))
+}
+
+TodoWrite({
+  todos: itemsToClean.map(item => ({
+    content: `Clean: ${item.path}`,
+    status: "pending",
+    activeForm: `Cleaning ${item.path}`
+  }))
+})
+```
+
+**Step 4.2: Execute Cleanup**
+```javascript
+const results = { deleted: [], failed: [], skipped: [] }
+
+for (const item of itemsToClean) {
+  TodoWrite({ todos: [...] })  // Mark current as in_progress
+
+  try {
+    if (item.type === 'orphan_file' || item.type === 'dead_export') {
+      // Dead code: Delete file or remove export
+      Bash({ command: `rm -rf "${item.path}"` })
+    } else {
+      // Sessions and documents: Delete directory/file
+      Bash({ command: `rm -rf "${item.path}"` })
+    }
+
+    results.deleted.push(item.path)
+    TodoWrite({ todos: [...] })  // Mark as completed
+  } catch (error) {
+    results.failed.push({ path: item.path, error: error.message })
+  }
+}
+```
+
+**Step 4.3: Update Manifests**
+```javascript
+// Update archives manifest if sessions were deleted
+if (selectedCategories.includes('Sessions')) {
+  const archiveManifestPath = '.workflow/archives/manifest.json'
+  if (fileExists(archiveManifestPath)) {
+    const archiveManifest = JSON.parse(Read(archiveManifestPath))
+    const deletedSessionIds = results.deleted
+      .filter(p => p.includes('WFS-'))
+      .map(p => p.split('/').pop())
+
+    const updatedManifest = archiveManifest.filter(entry =>
+      !deletedSessionIds.includes(entry.session_id)
+    )
+
+    Write(archiveManifestPath, JSON.stringify(updatedManifest, null, 2))
+  }
+}
+
+// Update project-tech.json if features referenced deleted sessions
+const projectPath = '.workflow/project-tech.json'
+if (fileExists(projectPath)) {
+  const project = JSON.parse(Read(projectPath))
+  const deletedPaths = new Set(results.deleted)
+
+  project.features = project.features.filter(f =>
+    !deletedPaths.has(f.traceability?.archive_path)
+  )
+
+  project.statistics.total_features = project.features.length
+  project.statistics.last_updated = getUtc8ISOString()
+
+  Write(projectPath, JSON.stringify(project, null, 2))
+}
+```
+
+**Step 4.4: Report Results**
+```javascript
+console.log(`
+## Cleanup Complete
+
+**Deleted**: ${results.deleted.length} items
+**Failed**: ${results.failed.length} items
+**Skipped**: ${results.skipped.length} items
+
+### Deleted Items
+${results.deleted.map(p => `- ${p}`).join('\n')}
+
+${results.failed.length > 0 ? `
+### Failed Items
+${results.failed.map(f => `- ${f.path}: ${f.error}`).join('\n')}
+` : ''}
+
+Cleanup manifest archived to: ${sessionFolder}/cleanup-manifest.json
+`)
+```
+
+---
+
+## Session Folder Structure
+
+```
+.workflow/.clean/{YYYY-MM-DD}/
+├── mainline-profile.json     # Git history analysis
+└── cleanup-manifest.json     # Discovery results
+```
+
+## Risk Level Definitions
+
+| Risk | Description | Examples |
+|------|-------------|----------|
+| **Low** | Safe to delete, no dependencies | Empty sessions, scratchpad files, 100% broken docs |
+| **Medium** | Likely unused, verify before delete | Orphan files, old archives, partially broken docs |
+| **High** | May have hidden dependencies | Files with some imports, recent modifications |
+
+## Error Handling
+
+| Situation | Action |
+|-----------|--------|
+| No git repository | Skip mainline detection, use file timestamps only |
+| Session in use (.archiving) | Skip with warning |
+| Permission denied | Report error, continue with others |
+| Manifest parse error | Regenerate from filesystem scan |
+| Empty discovery | Report "codebase is clean" |
+| Subagent timeout | Continue waiting or催促 with send_input |
+
+## Codex Conversion Notes
+
+### Key Changes from Claude Task Version
+
+1. **Role Loading Pattern**:
+   - Claude: `Task(subagent_type="cli-explore-agent")`
+   - Codex: Pass role path in `MANDATORY FIRST STEPS`, agent reads `~/.codex/agents/cli-explore-agent.md`
+
+2. **Result Retrieval**:
+   - Claude: Synchronous Task return
+   - Codex: `wait({ ids: [agent], timeout_ms: 600000 })`
+
+3. **Timeout Handling**:
+   - Codex requires explicit handling of `timed_out` with retry or催促
+
+4. **Lifecycle Management**:
+   - Codex requires explicit `close_agent()` after task completion
+
+5. **Error Recovery**:
+   - Can use `send_input()` to催促 agent if taking too long
+   - Can verify output file existence before closing agent
+
+## Related Commands
+
+- `/workflow:session:complete` - Properly archive active sessions
+- `/memory:compact` - Save session memory before cleanup
+- `/workflow:status` - View current workflow state
diff --git a/.codex/skills/ccw-loop-b/README.md b/.codex/skills/ccw-loop-b/README.md
index 971dc70d..f09e3297 100644
--- a/.codex/skills/ccw-loop-b/README.md
+++ b/.codex/skills/ccw-loop-b/README.md
@@ -1,102 +1,301 @@
-# CCW Loop-B (Hybrid Orchestrator Pattern)
+# CCW Loop-B: Hybrid Orchestrator Pattern
 
-协调器 + 专用 worker 的迭代开发工作流。
+Iterative development workflow using coordinator + specialized workers architecture.
 
 ## Overview
 
-CCW Loop-B 采用混合模式设计：
-- **Coordinator**: 状态管理、worker 调度、结果汇聚
-- **Workers**: 专注各自领域（develop/debug/validate）
+CCW Loop-B implements a flexible orchestration pattern:
+- **Coordinator**: Main agent managing state, user interaction, worker scheduling
+- **Workers**: Specialized agents (init, develop, debug, validate, complete)
+- **Modes**: Interactive / Auto / Parallel execution
 
-## Installation
+## Architecture
 
 ```
-.codex/skills/ccw-loop-b/
-+-- SKILL.md                    # Main skill definition
-+-- README.md                   # This file
-+-- phases/
-|   +-- orchestrator.md         # Coordinator logic
-|   +-- state-schema.md         # State structure
-+-- specs/
-    +-- action-catalog.md       # Action catalog
-
-.codex/agents/
-+-- ccw-loop-b-init.md          # Init worker
-+-- ccw-loop-b-develop.md       # Develop worker
-+-- ccw-loop-b-debug.md         # Debug worker
-+-- ccw-loop-b-validate.md      # Validate worker
-+-- ccw-loop-b-complete.md      # Complete worker
+Coordinator (Main Agent)
+    |
+    +-- Spawns Workers
+    |   - ccw-loop-b-init.md
+    |   - ccw-loop-b-develop.md
+    |   - ccw-loop-b-debug.md
+    |   - ccw-loop-b-validate.md
+    |   - ccw-loop-b-complete.md
+    |
+    +-- Batch Wait (parallel mode)
+    +-- Sequential Wait (auto/interactive)
+    +-- State Management
+    +-- User Interaction
 ```
 
+## Subagent API
+
+Core APIs for worker orchestration:
+
+| API | 作用 |
+|-----|------|
+| `spawn_agent({ message })` | 创建 worker，返回 `agent_id` |
+| `wait({ ids, timeout_ms })` | 等待结果（唯一取结果入口） |
+| `send_input({ id, message })` | 继续交互 |
+| `close_agent({ id })` | 关闭回收 |
+
+**可用模式**: 单 agent 深度交互 / 多 agent 并行 / 混合模式
+
 ## Execution Modes
 
-| Mode | Description | Use Case |
-|------|-------------|----------|
-| `interactive` | 用户选择 action | 复杂任务，需要人工决策 |
-| `auto` | 自动顺序执行 | 标准开发流程 |
-| `parallel` | 并行多维度分析 | 需要快速全面评估 |
+### Interactive Mode (default)
 
-## Usage
+Coordinator displays menu, user selects action, spawns corresponding worker.
 
 ```bash
-# Interactive (default)
 /ccw-loop-b TASK="Implement feature X"
-
-# Auto mode
-/ccw-loop-b --mode=auto TASK="Fix bug Y"
-
-# Parallel analysis
-/ccw-loop-b --mode=parallel TASK="Analyze module Z"
-
-# Resume
-/ccw-loop-b --loop-id=loop-b-xxx
 ```
 
-## Session Files
+**Flow**:
+1. Init: Parse task, create breakdown
+2. Menu: Show options to user
+3. User selects action (develop/debug/validate)
+4. Spawn worker for selected action
+5. Wait for result
+6. Display result, back to menu
+7. Repeat until complete
+
+### Auto Mode
+
+Automated sequential execution following predefined workflow.
+
+```bash
+/ccw-loop-b --mode=auto TASK="Fix bug Y"
+```
+
+**Flow**:
+1. Init → 2. Develop → 3. Validate → 4. Complete
+
+If issues found: loop back to Debug → Develop → Validate
+
+### Parallel Mode
+
+Spawn multiple workers simultaneously, batch wait for results.
+
+```bash
+/ccw-loop-b --mode=parallel TASK="Analyze module Z"
+```
+
+**Flow**:
+1. Init: Create analysis plan
+2. Spawn workers in parallel: [develop, debug, validate]
+3. Batch wait: `wait({ ids: [w1, w2, w3] })`
+4. Merge results
+5. Coordinator decides next action
+6. Complete
+
+## Session Structure
 
 ```
 .loop/
-+-- {loopId}.json              # Master state
-+-- {loopId}.workers/          # Worker outputs (JSON)
-+-- {loopId}.progress/         # Human-readable progress (MD)
++-- {loopId}.json                    # Master state
++-- {loopId}.workers/                # Worker outputs
+|   +-- init.output.json
+|   +-- develop.output.json
+|   +-- debug.output.json
+|   +-- validate.output.json
+|   +-- complete.output.json
++-- {loopId}.progress/               # Human-readable logs
+    +-- develop.md
+    +-- debug.md
+    +-- validate.md
+    +-- summary.md
 ```
 
-## Core Pattern
+## Worker Responsibilities
 
-### Coordinator + Worker
+| Worker | Role | Specialization |
+|--------|------|----------------|
+| **init** | Session initialization | Task parsing, breakdown, planning |
+| **develop** | Code implementation | File operations, pattern matching, incremental development |
+| **debug** | Problem diagnosis | Root cause analysis, hypothesis testing, fix recommendations |
+| **validate** | Testing & verification | Test execution, coverage analysis, quality gates |
+| **complete** | Session finalization | Summary generation, commit preparation, cleanup |
 
-```javascript
-// Coordinator spawns specialized worker
-const worker = spawn_agent({ message: buildWorkerPrompt(action) })
+## Usage Examples
 
-// Wait for completion
-const result = wait({ ids: [worker], timeout_ms: 600000 })
+### Example 1: Simple Feature Implementation
 
-// Process result
-const output = result.status[worker].completed
-updateState(output)
-
-// Cleanup
-close_agent({ id: worker })
+```bash
+/ccw-loop-b TASK="Add user logout function"
 ```
 
-### Batch Wait (Parallel Mode)
+**Auto flow**:
+- Init: Parse requirements
+- Develop: Implement logout in `src/auth.ts`
+- Validate: Run tests
+- Complete: Generate commit message
+
+### Example 2: Bug Investigation
+
+```bash
+/ccw-loop-b TASK="Fix memory leak in WebSocket handler"
+```
+
+**Interactive flow**:
+1. Init: Parse issue
+2. User selects "debug" → Spawn debug worker
+3. Debug: Root cause analysis → recommends fix
+4. User selects "develop" → Apply fix
+5. User selects "validate" → Verify fix works
+6. User selects "complete" → Generate summary
+
+### Example 3: Comprehensive Analysis
+
+```bash
+/ccw-loop-b --mode=parallel TASK="Analyze payment module for improvements"
+```
+
+**Parallel flow**:
+- Spawn [develop, debug, validate] workers simultaneously
+- Develop: Analyze code quality and patterns
+- Debug: Identify potential issues
+- Validate: Check test coverage
+- Wait for all three to complete
+- Merge findings into comprehensive report
+
+### Example 4: Resume Existing Loop
+
+```bash
+/ccw-loop-b --loop-id=loop-b-20260122-abc123
+```
+
+Continues from previous state, respects status (running/paused).
+
+## Key Features
+
+### 1. Worker Specialization
+
+Each worker focuses on one domain:
+- **No overlap**: Clear boundaries between workers
+- **Reusable**: Same worker for different tasks
+- **Composable**: Combine workers for complex workflows
+
+### 2. Flexible Coordination
+
+Coordinator adapts to mode:
+- **Interactive**: Menu-driven, user controls flow
+- **Auto**: Predetermined sequence
+- **Parallel**: Concurrent execution with batch wait
+
+### 3. State Management
+
+Unified state at `.loop/{loopId}.json`:
+- **API compatible**: Works with CCW API
+- **Extension fields**: Skill-specific data in `skill_state`
+- **Worker outputs**: Structured JSON for each action
+
+### 4. Progress Tracking
+
+Human-readable logs:
+- **Per-worker progress**: `{action}.md` files
+- **Summary**: Consolidated achievements
+- **Commit-ready**: Formatted commit messages
+
+## Best Practices
+
+1. **Start with Init**: Always initialize before execution
+2. **Use appropriate mode**:
+   - Interactive: Complex tasks needing user decisions
+   - Auto: Well-defined workflows
+   - Parallel: Independent analysis tasks
+3. **Clean up workers**: `close_agent()` after each worker completes
+4. **Batch wait wisely**: Use in parallel mode for efficiency
+5. **Track progress**: Document in progress files
+6. **Validate often**: After each develop phase
+
+## Implementation Patterns
+
+### Pattern 1: Single Worker Deep Interaction
 
 ```javascript
-// Spawn multiple workers
-const workers = [
-  spawn_agent({ message: developPrompt }),
-  spawn_agent({ message: debugPrompt }),
-  spawn_agent({ message: validatePrompt })
-]
+const workerId = spawn_agent({ message: workerPrompt })
+const result1 = wait({ ids: [workerId] })
+
+// Continue with same worker
+send_input({ id: workerId, message: "Continue with next task" })
+const result2 = wait({ ids: [workerId] })
+
+close_agent({ id: workerId })
+```
+
+### Pattern 2: Multi-Worker Parallel
+
+```javascript
+const workers = {
+  develop: spawn_agent({ message: developPrompt }),
+  debug: spawn_agent({ message: debugPrompt }),
+  validate: spawn_agent({ message: validatePrompt })
+}
 
 // Batch wait
-const results = wait({ ids: workers, timeout_ms: 900000 })
+const results = wait({ ids: Object.values(workers), timeout_ms: 900000 })
 
-// Merge results
-const merged = mergeOutputs(results)
+// Process all results
+Object.values(workers).forEach(id => close_agent({ id }))
 ```
 
-## License
+### Pattern 3: Sequential Worker Chain
 
-MIT
+```javascript
+const actions = ['init', 'develop', 'validate', 'complete']
+
+for (const action of actions) {
+  const workerId = spawn_agent({ message: buildPrompt(action) })
+  const result = wait({ ids: [workerId] })
+  
+  updateState(action, result)
+  close_agent({ id: workerId })
+}
+```
+
+## Error Handling
+
+| Error | Recovery |
+|-------|----------|
+| Worker timeout | `send_input` request convergence |
+| Worker fails | Log error, coordinator decides retry strategy |
+| Partial results | Use completed workers, mark incomplete |
+| State corruption | Rebuild from progress files |
+
+## File Structure
+
+```
+.codex/skills/ccw-loop-b/
++-- SKILL.md                         # Entry point
++-- README.md                        # This file
++-- phases/
+|   +-- state-schema.md              # State structure definition
++-- specs/
+    +-- action-catalog.md            # Action reference
+
+.codex/agents/
++-- ccw-loop-b-init.md               # Worker: Init
++-- ccw-loop-b-develop.md            # Worker: Develop
++-- ccw-loop-b-debug.md              # Worker: Debug
++-- ccw-loop-b-validate.md           # Worker: Validate
++-- ccw-loop-b-complete.md           # Worker: Complete
+```
+
+## Comparison: ccw-loop vs ccw-loop-b
+
+| Aspect | ccw-loop | ccw-loop-b |
+|--------|----------|------------|
+| Pattern | Single agent, multi-phase | Coordinator + workers |
+| Worker model | Single agent handles all | Specialized workers per action |
+| Parallelization | Sequential only | Supports parallel mode |
+| Flexibility | Fixed sequence | Mode-based (interactive/auto/parallel) |
+| Best for | Simple linear workflows | Complex tasks needing specialization |
+
+## Contributing
+
+To add new workers:
+1. Create worker role file in `.codex/agents/`
+2. Define clear responsibilities
+3. Update `action-catalog.md`
+4. Add worker to coordinator spawn logic
+5. Test integration with existing workers
diff --git a/.codex/skills/ccw-loop-b/specs/action-catalog.md b/.codex/skills/ccw-loop-b/specs/action-catalog.md
new file mode 100644
index 00000000..1d628d91
--- /dev/null
+++ b/.codex/skills/ccw-loop-b/specs/action-catalog.md
@@ -0,0 +1,383 @@
+# Action Catalog (CCW Loop-B)
+
+Complete reference of worker actions and their capabilities.
+
+## Action Matrix
+
+| Action | Worker Agent | Purpose | Input Requirements | Output |
+|--------|--------------|---------|-------------------|--------|
+| init | ccw-loop-b-init.md | Session initialization | Task description | Task breakdown + execution plan |
+| develop | ccw-loop-b-develop.md | Code implementation | Task list | Code changes + progress update |
+| debug | ccw-loop-b-debug.md | Problem diagnosis | Issue description | Root cause analysis + fix suggestions |
+| validate | ccw-loop-b-validate.md | Testing and verification | Files to test | Test results + coverage report |
+| complete | ccw-loop-b-complete.md | Session finalization | All worker outputs | Summary + commit message |
+
+## Detailed Action Specifications
+
+### INIT
+
+**Purpose**: Parse requirements, create execution plan
+
+**Preconditions**:
+- `status === 'running'`
+- `skill_state === null` (first time)
+
+**Input**:
+```
+- Task description (text)
+- Project context files
+```
+
+**Execution**:
+1. Read `.workflow/project-tech.json`
+2. Read `.workflow/project-guidelines.json`
+3. Parse task into phases
+4. Create task breakdown
+5. Generate execution plan
+
+**Output**:
+```
+WORKER_RESULT:
+- action: init
+- status: success
+- summary: "Initialized with 5 tasks"
+- next_suggestion: develop
+
+TASK_BREAKDOWN:
+- T1: Create auth module
+- T2: Implement JWT utils
+- T3: Write tests
+- T4: Validate implementation
+- T5: Documentation
+
+EXECUTION_PLAN:
+1. Develop (T1-T2)
+2. Validate (T3-T4)
+3. Complete (T5)
+```
+
+**Effects**:
+- `skill_state.pending_tasks` populated
+- Progress structure created
+- Ready for develop phase
+
+---
+
+### DEVELOP
+
+**Purpose**: Implement code, create/modify files
+
+**Preconditions**:
+- `skill_state.pending_tasks.length > 0`
+- `status === 'running'`
+
+**Input**:
+```
+- Task list from state
+- Project conventions
+- Existing code patterns
+```
+
+**Execution**:
+1. Load pending tasks
+2. Find existing patterns
+3. Implement tasks one by one
+4. Update progress file
+5. Mark tasks completed
+
+**Output**:
+```
+WORKER_RESULT:
+- action: develop
+- status: success
+- summary: "Implemented 3 tasks"
+- files_changed: ["src/auth.ts", "src/utils.ts"]
+- next_suggestion: validate
+
+DETAILED_OUTPUT:
+  tasks_completed: [T1, T2]
+  metrics:
+    lines_added: 180
+    lines_removed: 15
+```
+
+**Effects**:
+- Files created/modified
+- `skill_state.completed_tasks` updated
+- Progress documented
+
+**Failure Modes**:
+- Pattern unclear → suggest debug
+- Task blocked → mark blocked, continue
+- Partial completion → set `loop_back_to: "develop"`
+
+---
+
+### DEBUG
+
+**Purpose**: Diagnose issues, root cause analysis
+
+**Preconditions**:
+- Issue exists (test failure, bug report, etc.)
+- `status === 'running'`
+
+**Input**:
+```
+- Issue description
+- Error messages
+- Stack traces
+- Reproduction steps
+```
+
+**Execution**:
+1. Understand problem symptoms
+2. Gather evidence from code
+3. Form hypothesis
+4. Test hypothesis
+5. Document root cause
+6. Suggest fixes
+
+**Output**:
+```
+WORKER_RESULT:
+- action: debug
+- status: success
+- summary: "Root cause: memory leak in event listeners"
+- next_suggestion: develop (apply fixes)
+
+ROOT_CAUSE_ANALYSIS:
+  hypothesis: "Listener accumulation"
+  confidence: high
+  evidence: [...]
+  mechanism: "Detailed explanation"
+
+FIX_RECOMMENDATIONS:
+  1. Add removeAllListeners() on disconnect
+  2. Verification: Monitor memory usage
+```
+
+**Effects**:
+- `skill_state.findings` updated
+- Fix recommendations documented
+- Ready for develop to apply fixes
+
+**Failure Modes**:
+- Insufficient info → request more data
+- Multiple hypotheses → rank by likelihood
+- Inconclusive → suggest investigation areas
+
+---
+
+### VALIDATE
+
+**Purpose**: Run tests, check coverage, quality gates
+
+**Preconditions**:
+- Code exists to validate
+- `status === 'running'`
+
+**Input**:
+```
+- Files to test
+- Test configuration
+- Coverage requirements
+```
+
+**Execution**:
+1. Identify test framework
+2. Run unit tests
+3. Run integration tests
+4. Measure coverage
+5. Check quality (lint, types, security)
+6. Generate report
+
+**Output**:
+```
+WORKER_RESULT:
+- action: validate
+- status: success
+- summary: "113 tests pass, coverage 95%"
+- next_suggestion: complete (all pass) | develop (fix failures)
+
+TEST_RESULTS:
+  unit_tests: { passed: 98, failed: 0 }
+  integration_tests: { passed: 15, failed: 0 }
+  coverage: "95%"
+
+QUALITY_CHECKS:
+  lint: ✓ Pass
+  types: ✓ Pass
+  security: ✓ Pass
+```
+
+**Effects**:
+- Test results documented
+- Coverage measured
+- Quality gates verified
+
+**Failure Modes**:
+- Tests fail → document failures, suggest fixes
+- Coverage low → identify gaps
+- Quality issues → flag problems
+
+---
+
+### COMPLETE
+
+**Purpose**: Finalize session, generate summary, commit
+
+**Preconditions**:
+- All tasks completed
+- Tests passing
+- `status === 'running'`
+
+**Input**:
+```
+- All worker outputs
+- Progress files
+- Current state
+```
+
+**Execution**:
+1. Read all worker outputs
+2. Consolidate achievements
+3. Verify completeness
+4. Generate summary
+5. Prepare commit message
+6. Cleanup and archive
+
+**Output**:
+```
+WORKER_RESULT:
+- action: complete
+- status: success
+- summary: "Session completed successfully"
+- next_suggestion: null
+
+SESSION_SUMMARY:
+  achievements: [...]
+  files_changed: [...]
+  test_results: { ... }
+  quality_checks: { ... }
+
+COMMIT_SUGGESTION:
+  message: "feat: ..."
+  files: [...]
+  ready_for_pr: true
+```
+
+**Effects**:
+- `status` → 'completed'
+- Summary file created
+- Progress archived
+- Commit message ready
+
+**Failure Modes**:
+- Pending tasks remain → mark partial
+- Quality gates fail → list failures
+
+---
+
+## Action Flow Diagrams
+
+### Interactive Mode Flow
+
+```
++------+
+| INIT |
++------+
+    |
+    v
++------+  user selects
+| MENU |-------------+
++------+             |
+    ^                v
+    |         +--------------+
+    |         | spawn worker |
+    |         +--------------+
+    |                |
+    |                v
+    |         +------+-------+
+    +---------|  wait result |
+              +------+-------+
+                     |
+                     v
+              +------+-------+
+              | update state |
+              +--------------+
+                     |
+                     v
+              [completed?] --no--> [back to MENU]
+                     |
+                    yes
+                     v
+              +----------+
+              | COMPLETE |
+              +----------+
+```
+
+### Auto Mode Flow
+
+```
++------+      +---------+      +-------+      +----------+      +----------+
+| INIT | ---> | DEVELOP | ---> | DEBUG | ---> | VALIDATE | ---> | COMPLETE |
++------+      +---------+      +-------+      +----------+      +----------+
+                  ^                |               |
+                  |                +--- [issues]   |
+                  +--------------------------------+
+                              [tests fail]
+```
+
+### Parallel Mode Flow
+
+```
++------+
+| INIT |
++------+
+    |
+    v
++---------------------+
+| spawn all workers   |
+| [develop, debug,    |
+|  validate]          |
++---------------------+
+    |
+    v
++---------------------+
+| wait({ ids: all })  |
++---------------------+
+    |
+    v
++---------------------+
+| merge results       |
++---------------------+
+    |
+    v
++---------------------+
+| coordinator decides |
++---------------------+
+    |
+    v
++----------+
+| COMPLETE |
++----------+
+```
+
+## Worker Coordination
+
+| Scenario | Worker Sequence | Mode |
+|----------|-----------------|------|
+| Simple task | init → develop → validate → complete | Auto |
+| Complex task | init → develop → debug → develop → validate → complete | Auto |
+| Bug fix | init → debug → develop → validate → complete | Auto |
+| Analysis | init → [develop \|\| debug \|\| validate] → complete | Parallel |
+| Interactive | init → menu → user selects → worker → menu → ... | Interactive |
+
+## Best Practices
+
+1. **Init always first**: Parse requirements before execution
+2. **Validate often**: After each develop phase
+3. **Debug when needed**: Don't skip diagnosis
+4. **Complete always last**: Ensure proper cleanup
+5. **Use parallel wisely**: For independent analysis tasks
+6. **Follow sequence**: In auto mode, respect dependencies