taskgraph_ts/AGENTS.md

Memory Tools (via @alkdev/open-memory plugin)

You have access to two tools for managing your context and accessing session history:

memory({tool: "...", args: {...}})

Read-only tool for introspecting your session history and context state. Available operations:

• memory({tool: "help"}) — full reference with examples
• memory({tool: "summary"}) — quick counts of projects, sessions, messages, todos
• memory({tool: "sessions"}) — list recent sessions (useful for finding past work)
• memory({tool: "children", args: {sessionId: "ses_..."}}) — list sub-agent sessions spawned from a parent
• memory({tool: "messages", args: {sessionId: "..."}}) — read a session's conversation
• memory({tool: "messages", args: {sessionId: "...", role: "assistant"}}) — read only assistant messages
• memory({tool: "messages", args: {sessionId: "...", showTools: true}}) — include tool-call output
• memory({tool: "message", args: {messageId: "msg_..."}}) — read a single message by ID
• memory({tool: "search", args: {query: "..."}}) — search across all conversations
• memory({tool: "compactions", args: {sessionId: "..."}}) — view compaction checkpoints
• memory({tool: "context"}) — check your current context window usage

memory_compact()

Trigger compaction on the current session. This summarizes the conversation so far to free context space.

When to use memory_compact:

• When context is above 80% (check with memory({tool: "context"}))
• When you notice you're losing track of earlier conversation details
• At natural breakpoints in multi-step tasks (after completing a subtask, before starting a new one)
• When the system prompt shows a yellow/red/critical context warning
• Proactively, rather than waiting for automatic compaction at 92%

When NOT to use memory_compact:

• When context is below 50% (it wastes a compaction cycle)
• In the middle of a complex edit that you need immediate context for
• When the task is nearly complete (just finish the task instead)

Compaction preserves your most important context in a structured summary — you will continue the session with the summary as your starting point.

Worktree Tool (via @alkimiadev/open-coordinator plugin)

You have access to the worktree tool for git worktree management and session coordination. Call with {action, args}:

Coordinator Operations (available when session is not spawned by another session)

• worktree({action: "list"}) — List git worktrees
• worktree({action: "dashboard"}) — Worktree dashboard with session info
• worktree({action: "spawn", args: {tasks: [...], prompt: "..."}}) — Spawn parallel worktrees + sessions
• worktree({action: "sessions"}) — Query spawned session status
• worktree({action: "message", args: {sessionID: "...", message: "..."}}) — Message a session
• worktree({action: "abort", args: {sessionID: "..."}}) — Abort a session
• worktree({action: "cleanup", args: {action: "remove", pathOrBranch: "..."}}) — Remove worktree
• worktree({action: "help"}) — Show all available operations

Implementation Operations (available when session is spawned by a coordinator)

• worktree({action: "current"}) — Show your worktree mapping
• worktree({action: "notify", args: {message: "...", level: "info|blocking"}}) — Report to coordinator
• worktree({action: "status"}) — Show worktree git status

The plugin auto-injects workdir for bash commands when the session is mapped to a worktree.

Project: @alkdev/taskgraph

Pure TypeScript library for DAG task graph analysis, risk scoring, cost-benefit math, and YAML frontmatter parsing. Built on graphology. Dual-licensed MIT / Apache-2.0.

Commands

• npm run build — Build with tsup (ESM + CJS + declarations)
• npm run lint — Type-check with tsc --noEmit
• npm test — Run tests with vitest
• npm run test:watch — Watch mode
• npm run test:coverage — Coverage report (v8)

Architecture

See docs/architecture/ for the full SDD. Key points:

• Public API boundary: src/index.ts is the sole entry point. Internal graphology details are not re-exported. Only add exports to index.ts — never import from internal paths.
• Edge convention: prerequisite → dependent (if B depends on A, edge is A → B).
• Edge keys: deterministic ${source}->${target} per ADR-006.
• Schemas: TypeBox via @alkdev/typebox. All runtime schemas and types are defined in src/schema/. No Zod.
• Validation: throws on construction errors (duplicates, missing nodes). validate*() methods return error arrays instead of throwing.
• No comments in source: Do not add comments to code unless explicitly asked.

Source Layout

src/
  index.ts          — Public API surface (all exports)
  graph/
    construction.ts — TaskGraph class
    queries.ts      — Internal query helpers
    mutation.ts     — Internal mutation helpers
    validation.ts   — Internal validation helpers
  analysis/
    critical-path.ts, bottleneck.ts, parallel-groups.ts
    risk.ts, cost-benefit.ts, decompose.ts, defaults.ts
  frontmatter/
    parse.ts, serialize.ts, file-io.ts (Node.js only)
  schema/
    enums.ts, task.ts, graph.ts, results.ts
  error/
    index.ts        — Error classes + validation types

Dependencies

Runtime: graphology, graphology-*, yaml, @alkdev/typebox. No native addons. Dev: tsup, typescript, vitest, @vitest/coverage-v8.