fn-9.5 Run discovery lib

fn-9.5 Run discovery lib

Description

Create run discovery library to find and manage Ralph runs.

File

src/lib/runs.ts

Functions

// Scan runs directory for all runs
async function discoverRuns(): Promise<Run[]>

// Detect if run is active (check progress.txt for COMPLETE)
async function isRunActive(runPath: string): Promise<boolean>

// Get latest run (by date-based ID)
function getLatestRun(runs: Run[]): Run | undefined

// Get run details (iteration, epic, etc)
async function getRunDetails(runPath: string): Promise<RunDetails>

Run directory structure

scripts/ralph/runs/<run-id>/
├── progress.txt     # Check for COMPLETE marker
├── iter-*.log       # Count for iteration number
├── attempts.json
├── branches.json
└── receipts/

Active detection

Parse progress.txt, look for line containing promise=COMPLETE or <promise>COMPLETE</promise>.

Receipts access

// Get receipt status for a task
async function getReceiptStatus(runPath: string, taskId: string): Promise<{plan?: boolean, impl?: boolean}>

Receipts live in runs/<id>/receipts/. Files: plan-<task-id>.json, impl-<task-id>.json.

Block reason

// Get block reason if task is blocked
async function getBlockReason(taskId: string): Promise<string | null>

Block reason files: .flow/blocks/block-<task-id>.md or runs/<id>/block-<task-id>.md.

Run validation

--run <id> validation rules:

• Exact match required on run ID
• If not found: error "Run '' not found. Available: "
• If corrupt (missing progress.txt): warn but allow

Acceptance

• discoverRuns() returns Run[] sorted by date (newest first)
• isRunActive() correctly detects COMPLETE marker
• getLatestRun() returns most recent run
• Handles missing runs directory gracefully
• Handles empty runs directory
• getReceiptStatus() returns receipt state for task
• getBlockReason() returns block reason or null
• Run validation returns clear error for invalid run ID

Done summary

• Added run discovery library with discoverRuns(), isRunActive(), getLatestRun()
• Added getRunDetails() for detailed run information
• Added getReceiptStatus() and getBlockReason() for receipts/blocks
• Added validateRun() with clear error messages for invalid run IDs

Why:

• TUI needs to find and display Ralph runs
• Receipt/block status needed for task detail panel

Verification:

• 23 tests pass covering all functions
• Lint clean

Evidence

• Commits: f2bcbc2e51ad40985f9b7f9bce17b738d9b8a087
• Tests: bun test
• PRs: