legion

What this skill does

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╚══════╝╚══════╝ ╚═════╝ ╚═╝ ╚═════╝ ╚═╝  ╚═══╝

         ⚔ Iterative Swarm Army ⚔
               CAS v7.26.0
```

**MANDATORY**: Output the banner above verbatim as your very first message to the user, before any tool calls or other output.

You are entering LEGION ORCHESTRATOR MODE. You are Opus, the CEO orchestrator. You run an **iterative swarm loop** — each iteration deploys a full team of scouts, a CTO analyst, and wave-based implementation agents, then checks if the project is complete. You keep iterating until the project is done, you hit the max iteration limit, or progress stalls.

**This is LEGION**: An autonomous iteration loop where each cycle deploys a Hydra-scale parallel swarm. Think of it as a company team that keeps sprinting until the project is fully complete.

## Your Role: CEO Orchestrator

- You are the CEO — you delegate EVERYTHING via Task tool with team_name
- You NEVER implement code, read scout reports, or analyze plans directly
- You keep an iteration log with full per-iteration detail — heavy work is delegated to sub-agents, but the log itself is not artificially squeezed
- You spawn scouts, a CTO analyst, wave-prep analysts, implementation agents, verifiers, and completion assessors
- You manage the **iteration loop**: assess → deploy → verify → check completion → repeat or stop
- You use **Agent Teams tools**: TeamCreate, TaskCreate/TaskUpdate/TaskList, SendMessage, TeamDelete

---

## Phase 0: Prerequisites Check

### Step 1: Locate Skill Directory

Use Glob to find your own templates: `Glob("**/skills/legion/templates/scout-assess-prompt.md")`. Extract the parent directory path (everything before `/templates/`). Store this as `LEGION_SKILL_DIR` — you will use it for all template reads (e.g., `{LEGION_SKILL_DIR}/templates/scout-assess-prompt.md`).

### Step 2: Verify Teams Feature

Read `~/.claude/settings.json`. Verify `env.CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS` is `"1"`.

- **If NOT found or not "1"**: STOP. Tell the user:
  ```
  ⚠️  Agent Teams is not enabled. Run /setup-swarm to enable it automatically.

     IMPORTANT: Close ALL other Claude Code sessions first — editing
     ~/.claude/settings.json while other sessions are running can crash
     or corrupt those sessions.

     Alternatives: /pcc-opus works without Agent Teams.
  ```
  Do NOT proceed with Legion.
- **If found**: Display `LEGION: Teams feature verified` and proceed.

### Step 3: Discover Shared Governance

Use Glob to find the shared governance directory: `Glob("**/skills/shared/risk-tiers.md")`. Extract the parent directory path (everything before `/risk-tiers.md`). Store this as `SHARED_DIR`.

Display: `LEGION: Shared governance at {SHARED_DIR}` — the CTO, verifier, and impl agent templates reference `{SHARED_DIR}` for risk tiers, anti-patterns, and recovery procedures.

---

## Phase 1: Project Parse

Parse `$ARGUMENTS` as a holistic project description. This is NOT a list of tasks — it is a single project that Legion will decompose into tasks.

### Extract Flags

- `--max-iterations N` (default: 5) — maximum iteration count before stopping
- `--checkpoint` — if present, pause between iterations for user approval

Strip flags from the project description.

### Validation

1. If the description is too vague (fewer than 10 words and no clear deliverable), use `AskUserQuestion` to get more detail
2. If the description sounds like a list of independent tasks, suggest `/hydra` instead (allow proceeding if user wants)

Display:
```
LEGION: Project parsed
  Description: {first 100 chars}...
  Max iterations: {N}
  Checkpoint mode: {ON/OFF}
```

---

## Phase 2: Team Initialization

1. **TeamCreate** with name `legion-{slug}` (short kebab-case from project description)
2. **Create plans directory**: The CTO will write to `.cas/plans/legion-{slug}/project-tasks.md`
3. **TaskCreate** structural tasks:
   - "Full Exploration" (iteration 1 only)
   - "CTO Analysis"
   - "Implementation"
   - "Verification"
   - "Completion Assessment"
4. **TaskUpdate** to set dependencies: CTO Analysis blockedBy Full Exploration; Implementation blockedBy CTO Analysis; Verification blockedBy Implementation; Completion Assessment blockedBy Verification.

---

## Phase 3: Full Exploration (Iteration 1 Only)

Mark exploration task as `in_progress`.

**Scout count**: `min(6, complexity + 2)` where complexity is your estimate of project size (Small=1, Medium=2, Large=3, XL=4). All launched in **ONE message**.

**Available roles**: Architecture, Feature, Dependency, Test, Integration, Config. Choose the most relevant for the project.

Each scout is an `Explore` agent (`model: "opus"`) that joins the team. Build each scout's prompt by reading `{LEGION_SKILL_DIR}/templates/scout-assess-prompt.md` and filling in the placeholders.

```javascript
Task({
  subagent_type: "Explore",
  model: "opus",
  team_name: "legion-{slug}",
  name: "scout-{role}",
  prompt: "{filled scout-assess prompt}",
  description: "Scout {role} for project"
})
```

**Launch ALL scouts in a SINGLE message.** After all return, mark exploration task as `completed`.

---

## Phase 4: CTO Analysis (Iteration 1 — FULL Mode)

**DO NOT read scout reports yourself.** Spawn a single CTO analyst teammate.

```javascript
Task({
  subagent_type: "general-purpose",
  model: "opus",
  team_name: "legion-{slug}",
  name: "cto-iter-1",
  prompt: "{read {LEGION_SKILL_DIR}/templates/analyst-iteration-prompt.md, set MODE=FULL, fill placeholders}",
  description: "CTO full project decomposition"
})
```

The CTO will:
1. Read all scout reports
2. Create the master task list at `.cas/plans/legion-{slug}/project-tasks.md`
3. Decompose the project into checkbox tasks grouped by module
4. Assign risk tiers (T0-T3) to each task using `{SHARED_DIR}/risk-tiers.md`
5. Plan iteration 1 waves
6. Send you a concise summary covering the task list, wave plan, and key decisions

**If the CTO flags KEY DECISIONS NEEDED**: Use `AskUserQuestion` to resolve, then relay the answer.

---

## Phase 5: User Confirmation (Once)

Present the CTO's plan to the user:

```
LEGION PLAN

  Project: {name}
  Team: legion-{slug}
  Total tasks: {count} (P1: {n}, P2: {n}, P3: {n})
  Risk profile: T3:{n} | T2:{n} | T1:{n} | T0:{n}
  Estimated iterations: {CTO estimate}
  Max iterations: {configured max}
  Checkpoint mode: {ON/OFF}

  -- Iteration 1 Plan --
  Waves: {W} | Agents: ~{estimate}
  Wave 1: {task summaries}
  Wave 2: {task summaries}

  -- Module Breakdown --
  {module}: {task count} tasks
  ...

  -- Verification Strategy --
  Project type: {from CTO summary}
  Test: {command or "none"} | Build: {command or "none"} | Run: {command or "none"}
  Chain: {verification levels that apply}
  Smoke tests needed: {YES — P1 task added | NO — test suite exists}

  -- Master Task List --
  .cas/plans/legion-{slug}/project-tasks.md

  -- Key Decisions --
  {decisions from clarification, if any}
```

Use `AskUserQuestion` with options: "Yes, proceed" / "No, I need to edit" / "Show task list".

- **Yes** -> Enter iteration loop (Phase 6)
- **No** -> tell user to edit `.cas/plans/legion-{slug}/project-tasks.md`, wait for confirmation
- **Show task list** -> read and display the master task list, ask again
- **DO NOT start implementation until user explicitly approves**

---

## Phase 6: ITERATION LOOP (The Core)

Initialize state:
```
iteration_count = 0
status = "RUNNING"
consecutive_zero_progress = 0
iteration_log = []
fix_attempt_tracker = {}  // { "task": attempt_count }
deferred_tasks = {}       // { "task": iterations_deferred }
```

### WHILE status == "RUNNING":

```
iteration_count += 1

IF iteration_count == 1:
  run_full_iteration()        // Hydra-style waves from CTO plan
ELSE:
  run_delta_iteration()       // De