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v1.10.0
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# Architecture
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> Part of [AGENTS.md](../AGENTS.md) — project guidance for AI coding agents.
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## Directory Structure
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```
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plan2code/
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├── src/ # Source workflow prompts (8 markdown files)
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├── plan2code-loop/ # Autonomous loop CLI tool (Node.js/TypeScript)
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│ ├── src/ # TypeScript source
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│ └── dist/ # Built output (tsup)
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├── plan2code-metrics/ # Recursive self-improvement toolchain
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│ ├── src/ # TypeScript source
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│ │ └── prompts/ # Internal AI prompt templates (no char limit)
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│ └── dist/ # Built output (tsup)
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├── scripts/ # Development scripts
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│ └── validate-char-count.js # Pre-commit character count validator
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├── dist/ # Generated distribution files (auto-generated)
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│ ├── global-commands/ # For global installation (~/.claude/, etc.)
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│ └── local-commands/ # For per-project installation (.claude/, etc.)
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├── .husky/ # Git hooks (husky)
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│ └── pre-commit # Runs character count validation
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├── docs/ # Documentation and assets
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├── specs/ # Feature specs (if any in-progress)
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├── install.js # Interactive installer (Node.js)
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├── package.json # Root package (husky only, private: true)
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├── version.json # Version metadata
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└── README.md # User documentation
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```
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## Key Files
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| File | Purpose |
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|------|---------|
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| `install.js` | Main installer - generates and installs workflow files to AI tool directories |
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| `src/plan2code-*.md` | Source workflow prompts (the "source of truth") |
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| `scripts/validate-char-count.js` | Pre-commit validator ensuring all source prompts ≤ 11,000 chars |
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| `version.json` | Version metadata (name, version, description) |
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| `QUICK-REFERENCE.md` | User quick-reference card |
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## Workflow Prompts (in `src/`)
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| File | Step | Purpose |
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|------|------|---------|
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| `plan2code---init.md` | Init | Generate AGENTS.md as index + `.agents-docs/` section files (progressive discovery) |
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| `plan2code---init-update.md` | Update | Update AGENTS.md with learnings; detects and routes edits to `.agents-docs/` files |
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| `plan2code---quick-task.md` | 0 | Lightweight planning for small tasks |
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| `plan2code-1--plan.md` | 1 | Requirements analysis & architecture |
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| `plan2code-1b--revise-plan.md` | 1b | Mid-implementation revisions |
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| `plan2code-2--document.md` | 2 | Create implementation specs |
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| `plan2code-3--implement.md` | 3 | Execute implementation (phase by phase) |
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| `plan2code-4--finalize.md` | 4 | Validate, summarize, feedback, archive (7 steps) |
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## Naming Convention
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Workflow files follow a strict naming pattern:
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- **Utilities:** `plan2code---<name>.md` (triple dash)
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- **Numbered steps:** `plan2code-<N>--<name>.md` (single dash, number, double dash)
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Examples:
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- `plan2code---init.md` (utility)
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- `plan2code-1--plan.md` (step 1)
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- `plan2code-1b--revise-plan.md` (step 1b)
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# Code Style & Gotchas
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> Part of [AGENTS.md](../AGENTS.md) — project guidance for AI coding agents.
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## Code Style
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- **install.js:** CommonJS, Node.js built-ins only (no external deps), ANSI colors via `COLORS` constant, readline-based prompts
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- **plan2code-loop & plan2code-metrics:** TypeScript + ESM, built with tsup (target ES2022, moduleResolution: bundler)
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- External deps: `@inquirer/prompts`, `chalk`, `execa`, `ora`
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- Interactive CLI via `@inquirer/prompts` (select, input, confirm)
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- **File operations:** Synchronous fs in all packages
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## Gotchas / Pitfalls
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- **Version sync:** When adding a new version to `CHANGELOG.md`, also update `version.json` and `package.json` to match. The installer displays the version from `version.json` in its header.
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- **Loop `.gitignore` setup:** `ensureGitignore()` runs at startup in `Controller.run()` as a pre-flight step, not just inside `createTaskCommit()`. This is critical for phase mode where the Node controller doesn't handle commits — without it, `git add -A` would stage spec files.
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- **Workflow file character limit:** All `src/plan2code-*.md` files must be ≤ 11,000 characters. A husky pre-commit hook enforces this. The 11,000 limit leaves buffer for platform-specific YAML headers (106-142 chars) to stay under Windsurf's 12,000 char limit.
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- **Metrics internal prompts have no char limit:** Files in `plan2code-metrics/src/prompts/` are NOT subject to the 11,000 char limit — only `src/plan2code-*.md` consumer-facing prompts are.
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- **User Feedback table format:** The `## User Feedback` markdown table in `overview.md` has a strict format the collector regex depends on. Field names must be exactly `Rating`, `Reason`, `Went Well`, `Went Poorly`. Pipe characters in values must be escaped as `\|`.
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# Development Commands
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> Part of [AGENTS.md](../AGENTS.md) — project guidance for AI coding agents.
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## Common Commands
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```bash
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# Install dev dependencies (sets up husky pre-commit hooks)
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npm install
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# Run the interactive installer (always interactive — any CLI args are silently ignored)
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node install.js
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# Plan2Code Loop
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cd plan2code-loop && npm install # First time setup
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cd plan2code-loop && npm run build # Build the CLI
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# Plan2Code Metrics
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cd plan2code-metrics && npm install # First time setup
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cd plan2code-metrics && npm run build # Build the CLI
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```
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## Installer Menu Options
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**Main menu:**
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| Option | Action |
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|--------|--------|
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| `I` | Install Plan2Code for all platforms + loop CLI |
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| `U` | Uninstall Plan2Code files + loop CLI (confirmation required) |
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| `C` | Open CUSTOM sub-menu |
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| `Q` | Quit |
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**CUSTOM sub-menu (`C`):**
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| Option | Action |
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|--------|--------|
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| `L` | Show local (per-project) install instructions |
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| `O` | Install plan2code-loop CLI only |
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| `M` | Install plan2code-metrics CLI only |
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| `Q` | Return to main menu |
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## How the Installer Works
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1. **Reads source prompts** from `src/plan2code-*.md`
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2. **Generates platform-specific files** with appropriate headers (YAML frontmatter for some platforms)
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3. **Writes to `dist/`** subdirectories organized by destination type
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4. **Copies to target directories** (global: `~/.claude/commands/`, etc.)
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## Platform-Specific File Formats
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| Platform | Extension / File | Local Dir | Global Dir | Header |
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|----------|-----------------|-----------|------------|--------|
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| Claude Code | `.md` | — | — | None |
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| Cursor | `.md` | — | — | None |
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| Copilot CLI | `.md` | — | — | YAML frontmatter |
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| Continue | `.prompt.md` | — | — | YAML frontmatter |
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| Windsurf | `.md` | — | — | YAML frontmatter |
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| VS Code Copilot | `.prompt.md` | — | — | YAML frontmatter |
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| Codeium | `.md` | — | — | YAML frontmatter |
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| Claude Code (Skills) | `SKILL.md` in subdir | `.claude/skills/<skill-name>/` | `~/.claude/skills/<skill-name>/` | YAML frontmatter + `disable-model-invocation: true` |
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| Agent Skills (Amp · Gemini CLI · OpenCode) | `SKILL.md` in subdir | `.agents/skills/<skill-name>/` | `~/.agents/skills/<skill-name>/` | YAML frontmatter (no disable flag) |
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| Crush | `SKILL.md` in subdir | — (global only) | `~/.config/crush/skills/<skill-name>/` (Unix) / `%LOCALAPPDATA%\crush\skills\<skill-name>\` (Windows) | YAML frontmatter |
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| Gemini CLI (TOML) | `.toml` | `.gemini/commands/` | `~/.gemini/commands/` | None (TOML fields: `description`, `prompt`) |
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| Pi (pi.dev) | `.md` | `.pi/prompts/` | `~/.pi/agent/prompts/` | YAML frontmatter (`description`) |
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## Editing Workflow Prompts
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When modifying workflow prompts in `src/`:
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1. Edit the source file in `src/`
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2. Run `node install.js` to regenerate distribution files
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3. Test the workflow in your AI tool of choice
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4. The `dist/` folder is regenerated automatically — don't edit files there directly
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# Plan2Code Loop
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> Part of [AGENTS.md](../AGENTS.md) — project guidance for AI coding agents.
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A separate Node.js CLI tool that autonomously implements specs by looping through tasks.
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## Loop Architecture
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The loop uses an **LLM-driven discovery** approach:
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- Node app just orchestrates iterations and parses completion markers
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- The LLM reads spec files (`overview.md`, `phase-X.md`) to discover tasks
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- The LLM finds unchecked checkboxes, implements ONE task per iteration, marks it complete
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- No regex parsing of markdown in Node - the AI handles all task discovery
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## Loop Commands
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```bash
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# Build the loop CLI
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cd plan2code-loop && npm run build
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# Run the loop (after linking) - fully interactive
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plan2code-loop
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```
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The CLI auto-detects specs in `./specs/`, prompts for selection if multiple found, and handles session continuation interactively. Session state is stored per-spec in `specs/<feature>/.plan2code-loop/`.
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## Loop Modes
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The CLI asks users to choose a loop mode:
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- **One task per loop** (default) - Each agent invocation implements exactly one task. The Node controller handles git commits.
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- **One phase per loop** - Each agent invocation implements all remaining tasks in the current phase. The LLM handles git commits (with JIRA ticket ID if provided). The controller parses multiple completion markers from a single iteration.
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## Completion Markers
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The LLM must output one of these formats:
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- `TASK_COMPLETE: 1.1 - Task description` - Task done successfully
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- `TASK_BLOCKED: 1.1 - Reason` - Cannot complete task
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- `PHASE_COMPLETE` - Current phase finished (phase mode only)
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- `LOOP_COMPLETE` - All phases finished
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## Key Source Files
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| File | Purpose |
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|------|---------|
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| `plan2code-loop/src/controller.ts` | Main loop orchestrator |
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| `plan2code-loop/src/prompt/templates.ts` | Prompt templates for both loop modes |
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| `plan2code-loop/src/utils/git.ts` | `createTaskCommit()` — handles task-mode commits with footer |
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| `plan2code-loop/src/cli.ts` | Interactive CLI entry point |
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# Plan2Code Metrics
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> Part of [AGENTS.md](../AGENTS.md) — project guidance for AI coding agents.
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A recursive self-improvement toolchain for plan2code contributors. Collects run metrics, aggregates by prompt generation, diagnoses weak steps via AI, and proposes surgical prompt edits.
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## Metrics Data Flow
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```
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Collect → Aggregate → Analyze → Improve → Apply
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```
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1. **Collector** reads project artifacts (`specs/<feature>/`) → writes `RunMetrics` JSON per run
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2. **Aggregator** groups runs by prompt SHA fingerprint (cohorts) → `aggregated.json`
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3. **Analyzer** invokes AI with aggregated metrics + prompt contents → diagnosis markdown
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4. **Improver** invokes AI with diagnosis → validated `PromptEdit[]` proposals (char limit + verbatim checks)
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5. **Applier** shows interactive diffs → patches `src/plan2code-*.md` files
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## Metrics Commands
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```bash
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cd plan2code-metrics && npm run build # Build the CLI
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plan2code-metrics # Run (fully interactive, no flags)
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```
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## Metrics CLI Menu
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| Option | Action |
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|--------|--------|
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| Collect | Read spec artifacts → run JSON |
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| Import | Copy run JSON from another project |
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| View | Display cohort metrics with health indicators |
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| Analyze | AI diagnosis of weak metrics |
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| Propose | AI improvement proposals with validation |
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| Apply | Interactive diff review + file patching |
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## Key Source Files
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| File | Purpose |
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|------|---------|
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| `types.ts` | All interfaces (`RunMetrics`, `UserFeedback`, `CohortMetrics`, etc.) + `METRIC_TARGETS` |
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| `collector.ts` | Reads project artifacts → run JSON (parses plan drafts, overview.md, loop logs) |
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| `aggregator.ts` | Merges runs by prompt generation (SHA cohort) → `aggregated.json` |
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| `analyzer.ts` | AI diagnosis via `prompts/analyze.md` template |
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| `improver.ts` | AI proposals via `prompts/improve.md` + validation (char count, old_text match) |
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| `applier.ts` | Interactive diff review + file patching |
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| `cli.ts` | Menu-driven interactive CLI (100% prompts, no flags) |
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| `invoke-llm.ts` | Unified LLM interface (Claude Code or Copilot CLI) |
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## User Feedback
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The collector parses an optional `## User Feedback` table from `overview.md`:
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```markdown
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## User Feedback
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| Field | Value |
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|-------|-------|
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| Rating | 8 |
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| Reason | Smooth workflow |
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| Went Well | Planning was thorough |
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| Went Poorly | Some tasks unclear |
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```
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Feedback is collected during finalize (Step 5) or retroactively via the CLI. Pipe characters in values are escaped as `\|`. The aggregator computes `avg_user_rating` and `feedback_count` per cohort.
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## Supported AI Agents
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- **Claude Code** (recommended): `claude` CLI with `--inputFile` for prompt delivery
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- **GitHub Copilot CLI**: `copilot` CLI with stdin prompt delivery
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## Metric Targets
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| Metric | Target | Direction |
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|--------|--------|-----------|
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| `avg_confidence` | ≥ 90 | higher is better |
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| `avg_task_completion_rate` | ≥ 0.95 | higher is better |
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| `avg_blocker_count` | ≤ 1.5 | lower is better |
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| `avg_completion_marker_success_rate` | ≥ 0.95 | higher is better |
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| `avg_verification_failures_found` | ≤ 1.0 | lower is better |
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| `archival_success_rate` | ≥ 0.99 | higher is better |
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| `avg_user_rating` | ≥ 7.0 | higher is better |
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Data stored in `.plan2code-metrics/` (runs/, aggregated.json, proposals/).
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