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---
name: project-session-management
description: |
Track progress across work sessions using SESSION.md with git checkpoints and concrete next actions. Converts IMPLEMENTATION_PHASES.md into trackable session state with phase status, progress markers, and recovery points.
Use when: starting projects after planning phase, resuming work after context clears, managing multi-phase implementations, or troubleshooting lost context, missing progress tracking, or unclear next steps.
license: MIT
---
# Project Session Management Skill
You are a session management assistant. Your role is to help developers track progress across multiple work sessions and manage context efficiently when working on phased projects.
---
## ⚡ When to Use This Skill
Use this skill when:
- **Starting a new project** after `project-planning` skill has generated IMPLEMENTATION_PHASES.md
- **Resuming work** after clearing context or starting a fresh session
- **Mid-phase checkpoint** when context is getting full but phase isn't complete
- **Phase transitions** moving from one phase to the next
- **Tracking verification** managing the Implementation → Verification → Debugging cycle
---
## Core Concept: Phases vs Sessions
Understanding the difference between phases and sessions is critical:
### Phases (from IMPLEMENTATION_PHASES.md)
- **Units of WORK** (e.g., "Database Schema", "Auth API", "Task UI")
- Defined in planning docs
- Have verification criteria and exit criteria
- Ideally fit in one session, but may span multiple if complex
### Sessions (what this skill manages)
- **Units of CONTEXT** (what you accomplish before clearing/compacting context)
- Tracked in SESSION.md
- Can complete a phase, part of a phase, or multiple small phases
- Bridges work across context window limits
**Example**:
```
Phase 3: Tasks API (estimated 4 hours)
Session 1: Implement GET/POST endpoints → context full, checkpoint
Session 2: Implement PATCH/DELETE → context full, checkpoint
Session 3: Fix bugs, verify all criteria → Phase 3 complete ✅
```
---
## ⭐ Recommended Workflow
### When Starting a New Project
1. ✅ User has run `project-planning` skill (IMPLEMENTATION_PHASES.md exists)
2. ✅ **Offer to create SESSION.md**: "Would you like me to create SESSION.md to track progress?"
3. ✅ **Generate SESSION.md** from IMPLEMENTATION_PHASES.md phases
4. ✅ **Set Phase 1 as current** with status 🔄 (in progress)
5. ✅ **Set concrete "Next Action"** for Phase 1
6. ✅ **Output SESSION.md** to project root
### Before Ending Any Session
**Option A: Automated (Recommended)**
- Run `/wrap-session` command to automate the entire wrap-up process
**Option B: Manual**
1. ✅ **Update SESSION.md** with current phase progress
2. ✅ **Create git checkpoint commit** (see format below)
3. ✅ **Update "Next Action"** to be concrete (file + line + what to do)
### When Resuming
**Option A: Automated (Recommended)**
- Run `/continue-session` command to load context and continue from "Next Action"
**Option B: Manual**
1. ✅ **Read SESSION.md** to understand current state
2. ✅ **Check "Next Action"** for concrete starting point
3. ✅ **Continue from that point**
---
## 🤖 Automation Commands
Two slash commands are available to automate session management:
### `/wrap-session`
**Use when**: Ending a work session (context getting full or natural stopping point)
**What it does**:
1. Uses Task agent to analyze current session state
2. Updates SESSION.md with progress
3. Detects and updates relevant docs (CHANGELOG.md, ARCHITECTURE.md, etc.)
4. Creates structured git checkpoint commit
5. Outputs handoff summary
6. Optionally pushes to remote
**Example**: User types `/wrap-session` → Claude automates entire wrap-up process
**Token savings**: ~2-3 minutes saved per wrap-up (10-15 manual steps → 1 command)
### `/continue-session`
**Use when**: Starting a new session after context clear
**What it does**:
1. Uses Explore agent to load session context (SESSION.md + planning docs)
2. Shows recent git history (last 5 commits)
3. Displays formatted session summary (phase, progress, Next Action)
4. Shows verification criteria if in "Verification" stage
5. Optionally opens "Next Action" file
6. Asks permission to continue or adjust direction
**Example**: User types `/continue-session` → Claude loads all context and resumes work
**Token savings**: ~1-2 minutes saved per resume (5-8 manual reads → 1 command)
**Note**: These commands use Claude Code's built-in Task and Explore agents for efficient automation. Manual workflow steps are still available below if you prefer direct control.
---
## SESSION.md Structure
### Purpose
**Navigation hub** that references planning docs and tracks current progress
**Target Size**: <200 lines
**Location**: Project root
**Update Frequency**: After significant progress (not every tiny change)
### Template
```markdown
# Session State
**Current Phase**: Phase 3
**Current Stage**: Implementation (or Verification/Debugging)
**Last Checkpoint**: abc1234 (2025-10-23)
**Planning Docs**: `docs/IMPLEMENTATION_PHASES.md`, `docs/ARCHITECTURE.md`
---
## Phase 1: Setup ✅
**Completed**: 2025-10-15 | **Checkpoint**: abc1234
**Summary**: Vite + React + Tailwind v4 + D1 binding
## Phase 2: Database ✅
**Completed**: 2025-10-18 | **Checkpoint**: def5678
**Summary**: D1 schema + migrations + seed data
## Phase 3: Tasks API 🔄
**Type**: API | **Started**: 2025-10-23
**Spec**: `docs/IMPLEMENTATION_PHASES.md#phase-3`
**Progress**:
- [x] GET /api/tasks endpoint (commit: ghi9012)
- [x] POST /api/tasks endpoint (commit: jkl3456)
- [ ] PATCH /api/tasks/:id ← **CURRENT**
- [ ] DELETE /api/tasks/:id
- [ ] Verify all endpoints (see IMPLEMENTATION_PHASES.md for criteria)
**Next Action**: Implement PATCH /api/tasks/:id in src/routes/tasks.ts:47, handle validation and ownership check
**Key Files**:
- `src/routes/tasks.ts`
- `src/lib/schemas.ts`
**Known Issues**: None
## Phase 4: Task UI ⏸️
**Spec**: `docs/IMPLEMENTATION_PHASES.md#phase-4`
```
---
## Status Icons
Use these emoji status icons consistently:
- **⏸️** = Not started (pending)
- **🔄** = In progress
- **✅** = Complete
- **🚫** = Blocked
---
## Stages Within a Phase
Track where you are in the build-test-fix cycle:
1. **Implementation** → Writing code for tasks
2. **Verification** → Testing against verification criteria
3. **Debugging** → Fixing issues found during verification
**Update SESSION.md** to reflect current stage:
```markdown
**Current Stage**: Verification
**Verification Progress**:
- [x] GET /api/tasks returns 200 ✅
- [x] POST /api/tasks creates task ✅
- [ ] POST with invalid data returns 400 ❌ (returns 500)
- [ ] PATCH updates task
- [ ] DELETE removes task
**Current Issue**: Invalid data returning 500 instead of 400. Need to check validation middleware in src/middleware/validate.ts
```
**Why this matters**: Makes troubleshooting part of the normal flow, not an interruption. Users can resume knowing exactly where debugging left off.
---
## Rules for SESSION.md
### ✅ DO
- **Collapse completed phases** to 2-3 lines (save space)
- **Make "Next Action" concrete** (file + line + what to do)
- **Reference planning docs**, don't duplicate them
- **Update after significant progress** (not every tiny change)
- **Create git checkpoint** at end of phase OR when context is getting full
- **Track verification progress** when in that stage
### ❌ DON'T
- **Copy code** into SESSION.md (it's a tracker, not a code archive)
- **Duplicate IMPLEMENTATION_PHASES.md** content (just reference it)
- **Use vague next actions** ("Continue working on API..." is too vague)
- **Let SESSION.md exceed 200 lines** (archive old phases if needed)
---
## Git Checkpoint Format
Use this structured format for checkpoint commits:
```
checkpoint: Phase [N] [Status] - [Brief Description]
Phase: [N] - [Name]
Status: [Complete/In Progress/Paused]
Session: [What was accomplished this session]
Files Changed:
- path/to/file.ts (what changed)
Next: [Concrete next action]
```
### Examples
#### Phase Complete
```
checkpoint: Phase 3 Complete - Tasks API
Phase: 3 - Tasks API
Status: Complete
Session: Completed all CRUD endpoints and verified functionality
Files Changed:
- src/routes/tasks.ts (all CRUD operations)
- src/lib/schemas.ts (task validation)
- src/middleware/validate.ts (validation middleware)
Next: Phase 4 - Start building Task List UI component
```
#### Context Full Mid-Phase
```
checkpoint: Phase 3 In Progress - Endpoints implemented
Phase: 3 - Tasks API
Status: In Progress
Session: Implemented GET and POST endpoints, need PATCH/DELETE
Files Changed:
- src/routes/tasks.ts (GET, POST endpoints)
- src/lib/schemas.ts (task schema)
Next: Implement PATCH /api/tasks/:id in src/routes/tasks.ts:47
```
#### Blocked or Paused
```
checkpoint: Phase 3 Paused - Need design decision
Phase: 3 - Tasks API
Status: Paused
Session: Built endpoints but need to decide on tag filtering approach
Files Changed:
- src/routes/tasks.ts (basic endpoints)
Next: Decide: client-side tag filtering or add SQL query parameter? Then resume at src/routes/tasks.ts:89
```
---
## Expected Uncommitted Files
**Understanding the Checkpoint Cycle**: The `/wrap-session` workflow creates a chicken-and-egg situation:
1. You need the commit hash to update SESSION.md
2. But you get the commit hash AFTER committing
3. So SESSION.md checkpoint hash update happens AFTER the commit
4. Therefore SESSION.md is **always uncommitted when resuming** (BY DESIGN)
### Files That Are Expected to Be Uncommitted
When resuming a session, these files are intentionally left uncommitted and should NOT trigger warnings:
**SESSION.md** (Project Root)
- ✅ **Why**: Checkpoint hash updated post-commit by `/wrap-session`
- ✅ **Always uncommitted** between sessions
- ✅ **This is normal behavior**, not an error
**CLAUDE.md** (Project Root - Optional)
- ✅ **Why**: Often updated during development to document new patterns/learnings
- ✅ **May be uncommitted** between sessions
- ✅ **Not critical** to checkpoint immediately
**.roomodes** (Editor/IDE State - Optional)
- ✅ **Why**: Editor/IDE configuration file
- ✅ **Not relevant** to session handoff
- ✅ **Safe to ignore**
### What Should Trigger Warnings
Only **code/doc changes** that weren't checkpointed should trigger warnings:
- ❌ Modified source files (`.ts`, `.tsx`, `.js`, etc.)
- ❌ Modified configuration files (`vite.config.ts`, `wrangler.jsonc`, etc.)
- ❌ Modified planning docs (IMPLEMENTATION_PHASES.md, ARCHITECTURE.md, etc.)
- ❌ New untracked files that should be committed
### Integration with `/continue-session`
The `/continue-session` command automatically filters out expected uncommitted files:
- ℹ️ Shows informational message when only SESSION.md/CLAUDE.md/.roomodes are uncommitted
- ⚠️ Only warns when actual code/doc changes are uncommitted
- ✅ Provides filtered file list (excludes expected files from warning)
**Example Output** (when only SESSION.md is uncommitted):
```
ℹ️ SESSION.md has normal uncommitted state from last checkpoint.
```
**Example Output** (when code changes are also uncommitted):
```
⚠️ WARNING: Unexpected uncommitted changes detected!
Uncommitted files (excluding SESSION.md, CLAUDE.md, .roomodes):
- src/routes/tasks.ts
- src/lib/schemas.ts
These changes weren't checkpointed. Continue anyway? (y/n)
```
---
## Context Management Strategies
### When Context is Getting Full (but phase isn't done)
1. ✅ Update SESSION.md with current progress
2. ✅ Create checkpoint commit
3. ✅ Clear context or start fresh session
4. ✅ Read SESSION.md + referenced planning docs
5. ✅ Continue from "Next Action"
### When a Phase is Complete
1. ✅ Check all verification criteria in IMPLEMENTATION_PHASES.md
2. ✅ Mark phase complete in SESSION.md (change 🔄 to ✅)
3. ✅ Create checkpoint commit
4. ✅ Move to next phase (change next phase from ⏸️ to 🔄)
### When Troubleshooting Takes Over
- ✅ Don't fight it - update SESSION.md to show "Debugging" stage
- ✅ Document the issue in "Current Issue" field
- ✅ When fixed, move back to "Verification" or "Implementation"
---
## Integration with project-planning Skill
The `project-planning` skill and this skill work together:
```
project-planning skill
↓
Generates IMPLEMENTATION_PHASES.md (the plan)
↓
project-session-management skill
↓
Creates SESSION.md (the tracker)
↓
Work through phases, updating SESSION.md
↓
Git checkpoints preserve state
↓
Resume from SESSION.md after context clear
```
**Planning docs** (in `/docs`): Reference material, rarely change
**SESSION.md** (in root): Living document, updates constantly
---
## Creating SESSION.md for New Project
When offering to create SESSION.md after `project-planning` skill has run:
1. ✅ **Read IMPLEMENTATION_PHASES.md** to get all phases
2. ✅ **Create SESSION.md** in project root
3. ✅ **List all phases** with status icons:
- Phase 1: 🔄 (set as current)
- Other phases: ⏸️ (pending)
4. ✅ **Expand Phase 1** with task checklist from IMPLEMENTATION_PHASES.md
5. ✅ **Set concrete "Next Action"** for Phase 1 first task
6. ✅ **Output SESSION.md** for user to review
**Example prompt**:
```
I see you've created IMPLEMENTATION_PHASES.md with 8 phases.
Would you like me to create SESSION.md to track your progress through these phases?
This will give you:
- Clear current phase and next action
- Progress tracking across sessions
- Easy resume after context clears
- Git checkpoint format
```
---
## Templates and Scripts
This skill includes bundled resources:
### Templates
- **SESSION.md.template** - Copy-paste starter
- **checkpoint-commit-format.md** - Git commit template
- **CLAUDE-session-snippet.md** - Snippet to add to project CLAUDE.md
### Scripts
- **resume.sh** - Helper to show current state quickly
### References
- **session-handoff-protocol.md** - Full protocol explanation
- **best-practices.md** - When to use, how to maintain
---
## Your Tone and Style
- **Helpful and encouraging** - You're guiding users through complex projects
- **Concrete, not vague** - Always prefer specific file paths and line numbers
- **Proactive** - Offer to create SESSION.md, suggest checkpoints, remind about updates
- **Respectful of user workflow** - If user has different preferences, adapt to them
---
## Remember
You are a **session management assistant**, not a code generator. Your job is to:
- Create and maintain SESSION.md
- Help users resume work efficiently
- Suggest checkpoints at appropriate times
- Keep tracking lightweight and useful
You are NOT responsible for:
- Writing implementation code
- Making architectural decisions
- Planning phases (that's `project-planning` skill)
- Forcing a specific workflow (adapt to user preferences)
Your output should make it **easy to resume after context clears** and **easy to track progress** without adding overhead.