Ledger Tasks Yylo

---
name: ledger-tasks-yylo
description: Comprehensive guide for using YYLO Ledger task management without bypassing controller routing, lifecycle state, or mutation receipts. Covers task commands, dependency management, best practices, and workflow patterns. Use when you need to interact with the YYLO Ledger board.
version: 1.0.0
license: MIT
argument-hint: "[command or workflow question]"
enable-shell-directives: true
---

## YYLO Ledger CLI Reference

Use `yy ledger` for all commands. Before any operation, run `yy ledger --version` and `yy ledger --help`; the installed runtime's help is authoritative. Read the current task/board state before mutation, preserve the returned mutation receipt when offered, and never edit Markdown/store files directly to bypass controller routing or lifecycle state. If the required command group is absent, stop and request a Ledger upgrade rather than guessing or invoking mutable source code. Ledger 0.3.x exposes both the compatible flat task commands and the native ID-first `record|task|wiki|workflow|artifact` groups. `yy kanban` is a labelled compatibility alias for the same controller-routed task runtime.

### Supported task contract

- Preflight installed `yy ledger --version` and `yy ledger --help`; command help is authoritative for the selected runtime.
- Use the flat task surface for lifecycle task management. Use the dedicated native skills for wiki, workflow, and artifact Records rather than guessing their arguments.
- New operational PDRs, contracts, plans, reports, receipts, and evidence belong in typed Artifact Records, not product documentation, task bodies/responses, or new `.juno_task/specs` files.
- If a required native group is absent, fail closed and request a Ledger upgrade. Never invoke mutable source directly or write Ledger store files by hand.
- Read current task state before mutation, preserve mutation receipts where offered, and never bypass controller routing or lifecycle state with direct file edits.
- Normal discovery is hot-only unless an explicit cold-archive command is used.

### Opt-in cross-project routing

Cross-project access is disabled by default. The source `.juno_task/config.json` must set `kanbanRegistry.enabled: true` and explicitly list `allowedProjects`; environment overrides are `YYLO_LEDGER_REGISTRY_ENABLED` and `YYLO_LEDGER_REGISTRY_ALLOWED_PROJECTS`. Register with `yy ledger project add ALIAS --path /absolute/project`, then route any command with `--project ALIAS`. The destination wrapper/runtime remains authoritative, and routing failures never fall back to the source board.

### Legacy Task compatibility commands

**CREATE** — Add a new task
```bash
yy ledger create "Task description here" --status backlog --tags feature,backend
```
Options: `--status` (backlog|todo|in_progress|done), `--tags` (comma/space-separated), `--blocked-by` (task IDs), `--related-tasks` (task IDs)

**LIST** — Browse tasks with summary stats
```bash
yy ledger list --limit 5 --sort asc
yy ledger list --status todo --sort asc
yy ledger list --status todo,in_progress --limit 10
```

**SEARCH** — Find tasks by criteria
```bash
yy ledger search --status todo --tag backend --limit 10
yy ledger search --body "OAuth" --open
yy ledger search --commit abc123
```
Filters: `--status`, `--tag`, `--body`, `--response`, `--commit`, `--open` (no agent_response), `--recent`, `--exclude` (exclude tags)

**GET** — Full task details (including dependency info and related task details)
```bash
yy ledger get TASK_ID
```

**MARK** — Update status with required response message
```bash
yy ledger mark in_progress --id TASK_ID --response "Starting work on this"
yy ledger mark done --id TASK_ID --response "Completed: implemented X, tested Y" --commit abc123def
yy ledger mark todo --id TASK_ID --response "Reopening: found regression"
```
Required: `--id` and `--response`. Optional: `--commit` (recommended for done).

**UPDATE** — Modify task fields
```bash
yy ledger update TASK_ID --status todo --tags backend,urgent
yy ledger update TASK_ID --commit abc123def
yy ledger update TASK_ID --response "Additional context"
```

**ARCHIVE** — Soft delete (preserves data, sets status to archive)
```bash
yy ledger archive TASK_ID
```

### Immutable cold archive packs

Normal `list`, `search`, `ready`, and `order` are deliberately hot-only. Exact `get TASK_ID` transparently resolves a hot task or a read-only archived task; use `history TASK_ID` explicitly for its ledger. Discover cold tasks only with bounded, projected `archive-search` output:

```bash
yy ledger archive-search --tag backend --before 2026-01-01 --limit 20 --projection metadata
```

Before archive maintenance, preflight the installed version/help and obtain explicit owner authorization. The repository and index must be clean, and reports must be durable new paths outside the repository:

```bash
yy ledger --version
yy ledger archive-pack plan --status done,archive --older-than 90d --max-tasks 1000 --target-bytes 26214400 --hard-max-bytes 47185920 --report /external/receipts/archive-plan.json
# Independently inspect selected IDs, revisions, source HEAD, policy, and plan hash.
yy ledger archive-pack create --plan /external/receipts/archive-plan.json --report /external/receipts/archive-create.json
yy ledger archive-pack doctor
yy ledger doctor
```

A stale plan or selected-task/worktree conflict must fail closed: discard the plan, resolve the conflict, and plan again. Never automate archival, edit/append packs or manifests, restore/reopen an archived ID, use force/lossy controls, or enumerate archive files directly. Create follow-up work as a new hot task related to the archived ID. Production archival, push/deploy, and post-deploy E2E each require separate authorization; agents must not infer it from implementation approval.

### Dependency Management

**DEPS** — View, add, or remove task dependencies
```bash
# View dependency info (blockers, dependents, priority score)
yy ledger deps TASK_ID

# Add blockers (TASK_ID cannot start until BLOCKER1 and BLOCKER2 are done)
yy ledger deps add --id TASK_ID --blocked-by BLOCKER1 BLOCKER2

# Remove a blocker
yy ledger deps remove --id TASK_ID --blocked-by BLOCKER1
```
Cycle detection prevents circular dependencies automatically.

**READY** — Tasks with all blockers satisfied (safe to work on)
```bash
yy ledger ready
yy ledger ready --tag backend --limit 5
```
Returns tasks where status is backlog/todo/in_progress AND all `blocked_by` tasks are done/archive.

**ORDER** — Topological sort of open tasks respecting dependencies
```bash
yy ledger order
yy ledger order --scores
```
Use for determining safe parallel execution order.

### Body Markup for Inline Dependencies

Declare dependencies and relations directly in task body text:

```
[blocked_by]TASK_ID[/blocked_by]          — This task is blocked by TASK_ID
[blocked_by]ID1, ID2[/blocked_by]         — Blocked by multiple tasks
[task_id]RELATED_ID[/task_id]             — Reference a related task
[task_id]ID1 ID2[/task_id]                — Multiple related tasks
```

These are parsed automatically when the task is created/updated.

### Merge (Multi-Directory Consolidation)

When tasks get scattered across subdirectories:
```bash
# First produce and review a deterministic plan
yy ledger merge ./sub1/.juno_task ./sub2/.juno_task --into ./.juno_task \
  --dry-run --plan-file /external/ledger-merge-plan.json

# Apply only that reviewed plan and retain its receipt
yy ledger merge ./sub1/.juno_task ./sub2/.juno_task --into ./.juno_task \
  --apply-plan /external/ledger-merge-plan.json \
  --receipt-file /external/ledger-merge-receipt.json
```

### Output Formats

All commands support: `-f json`, `-f ndjson` (default), `-f xml`, `-f table`
Add `--raw` for compact output. Add `-p` for pretty print.

### Best Practices

1. **Task sizing**: Create tasks small enough to complete in one iteration without filling the context window
2. **Status flow**: backlog → todo → in_progress → done (or archive for abandoned tasks)
3. **Always include `--response`** when using `mark` — document what you did and how you tested it
4. **Attach commits**: Use `--commit HASH` when marking done, then `update TASK_ID --commit HASH` to link the git history
5. **Use `ready`** before starting work to find unblocked tasks
6. **Use `order --scores`** to plan parallel execution pipelines
7. **Use `[blocked_by]` markup** in task body when creating tasks that depend on others
8. **Use `[task_id]` markup** in task body to cross-reference related tasks
9. **Use `get TASK_ID`** to see full task details including resolved dependency and related task info
10. **Concurrent features are supported** — start each selected task with `yy task start TASK_ID`; each gets a dedicated product worktree, while `yy merge` serializes only target updates

### Canonical Controller Routing

YYLO Ledger mutation resolves the controller in this order: explicit `JUNO_TASK_ROOT`, repository-local registration, then the current project root. Diagnose before orchestration with `.juno_task/scripts/controller_resolver.py --cwd "$PWD" --operation kanban`. The resolver may bootstrap or idempotently confirm a registration, but changing an existing controller requires `yy migrate registration plan` followed by a separately authorized apply. Explicit/registered path or branch errors fail closed—YYLO Ledger never switches Git branches or falls back silently.

Run YYLO Ledger and workflows from the controller. A task checkout may implement/test but routes task/session writes to that controller. An integration-owner checkout stays clean and refuses Kanban/orchestration/session writes in strict mode; launch from the controller and pass the product checkout separately as `TASK_ROOT`.

### Environment Variables

- `JUNO_TASK_ROOT` — Explicit canonical controller/task-storage root (not the product `TASK_ROOT`)
- `JUNO_CONTROLLER_BRANCH` — Expected controller branch for environment-based routing
- `JUNO_WORKSPACE_ROLE` — `controller`, `task`, or `integration-owner`
- `JUNO_WORKSPACE_ENFORCEMENT` — `off`, `warn`, or `strict`
- `JUNO_DEBUG=true` — Show diagnostic messages
- `JUNO_VERBOSE=true` — Show informational messages
- `JUNO_KANBAN_LIST_BODY_TRUNCATE_CHARS=N` — Override list body truncation (default: 1200)

$ARGUMENTS