Agentic Development

Agentic Development

Structured workflow for maintaining progress across multiple AI coding sessions, preventing common failure modes: one-shotting (attempting too much), premature completion (declaring victory early), and broken handoffs (leaving work in unusable state).

Core Files

features.json

Structured feature tracking with explicit pass/fail states:

{
  "meta": {
    "project": "project-name",
    "currentPhase": 1,
    "lastUpdated": "YYYY-MM-DD"
  },
  "features": [
    {
      "id": "p1-feature-name",
      "phase": 1,
      "category": "category-name",
      "description": "Feature description",
      "priority": "high|medium|low",
      "dependencies": [],
      "verification": ["Step 1", "Step 2", "Step 3"],
      "passes": false
    }
  ]
}

Rules:

• Only modify passes field during development
• Never remove or edit verification steps mid-session
• Use currentPhase in meta for phase detection
• Feature IDs prefixed with phase: p1-, p2-, etc.
• JSON format reduces accidental overwrites

claude-progress.txt

Session handoff file:

=== Project Name - Development Progress ===

Last Updated: YYYY-MM-DD
Current Phase: N (Phase Name)
Total Features: X
Passing: Y

---

=== Session: YYYY-MM-DD ===

COMPLETED:
- [feature-id]: Brief description

IN PROGRESS:
- None (clean state preferred)

BLOCKERS:
- Any issues preventing progress

NEXT PRIORITY:
- [feature-id] from features.json

GIT COMMITS THIS SESSION:
- [hash]: [message]

NOTES:
- Context for next session

init.sh

Startup script for consistent session initialization:

#!/bin/bash
set -e

# Verify directory
if [ ! -f "package.json" ]; then
  echo "ERROR: Not in project root"
  exit 1
fi

# Show progress
head -40 claude-progress.txt

# Show feature status
passing=$(grep -c '"passes": true' features.json || echo 0)
total=$(grep -c '"passes":' features.json || echo 0)
echo "Features: $passing / $total passing"

# Start dev server
npm run dev &

Session Protocol

Session Start

1. Run pwd to confirm working directory
2. Read claude-progress.txt for recent context
3. Read features.json to identify next incomplete feature
4. Check git log --oneline -10 for recent changes
5. Run dev server, verify basic functionality works

During Session

• Work on ONE feature at a time
• Commit after each working feature
• Update progress file incrementally

Session End

1. Ensure code compiles and runs
2. Write descriptive git commit
3. Update claude-progress.txt
4. Mark features "passes": true only after verification
5. Leave codebase in clean, working state

Verification Protocol

Features are not complete until verified. Two approaches:

Manual Verification

Feature: [description]
1. Start dev server
2. Navigate to feature
3. Execute each verification step from features.json
4. Confirm expected behavior
5. Only then mark passes: true

Automated Verification (Playwright MCP)

Use the playwright-verification skill for browser-based automated verification:

# In Claude Code CLI
claude
> /project:verify p1-feature-name    # Single feature
> /project:verify-all                 # All incomplete

See skills/playwright-verification/SKILL.md for full documentation.

Never mark passing based solely on:

• Code compiling
• Unit tests passing
• "It should work"

Dependency Management

Features can declare dependencies:

{
  "id": "p1-search",
  "dependencies": ["p1-list"],
  "passes": false
}

Rules:

• Don't start a feature until dependencies pass
• Verification skips features with unmet dependencies
• Dependency graph shown in claude-progress.txt

Phase Transitions

When all features in a phase pass:

1. Update currentPhase in features.json meta
2. Add new phase features to features.json
3. Update claude-progress.txt with phase summary
4. Commit: "Complete phase N, begin phase N+1"

File Structure

project/
├── .claude/
│   ├── settings.json          # MCP config (if using Playwright)
│   └── commands/
│       ├── verify.md          # Single feature verification
│       └── verify-all.md      # Batch verification
├── features.json              # Feature tracking
├── claude-progress.txt        # Session handoff
├── init.sh                    # Dev startup script
└── skills/
    └── playwright-verification/
        └── SKILL.md           # Verification skill docs

Common Failure Modes

One-Shotting

Problem: Attempting entire phase in single session Solution: Work on ONE feature, verify, commit, repeat

Premature Completion

Problem: Marking features passing without verification Solution: Run verification steps explicitly, document results

Broken Handoffs

Problem: Leaving code in non-working state Solution: Always commit working code, update progress file

Dependency Violations

Problem: Starting features before dependencies pass Solution: Check dependency graph before starting work

Templates

See assets/ for starter templates:

• features-template.json - Empty feature list structure
• progress-template.txt - Session handoff template
• init-template.sh - Dev session startup script

Integration with Other Skills

Quick Reference

# Session start
./init.sh

# Check status
grep -c '"passes": true' features.json  # Count passing
head -50 claude-progress.txt            # Recent context

# After implementing feature
claude
> /project:verify p1-feature-name

# Session end
git add -A
git commit -m "feat: implement p1-feature-name"
# Update claude-progress.txt