plan-creation

name	plan-creation
description	Create structured implementation plans via a 4-role scrum team (Product Owner, Architect, Eng/Delivery Lead, QA/Critic) with optional Agent Teams peer debate mode.
when_to_use	Use when the user asks to design, plan, scope, or break down an implementation, feature, refactor, or system change. Also invoked by orchestrator pipelines (e.g., new-feature) that need a structured plan before execution.
user-invocable	true
argument-hint	<topic, filepath, or directory> [--doc <path>] [--research <synthesis-file>]
skills	["subagent-prompting"]
allowed-tools	["AskUserQuestion","Bash","Edit","Glob","Grep","Read","Skill","Task","Write"]
version	1.0.2
author	Ashay Kubal @ Qball Inc.

Plan Creation

Create structured implementation plans through a 4-role collaborative scrum team: Product Owner, Technical Architect, Engineering & Delivery Lead, and QA/Critic. The Product Owner explores the codebase first, then Architect and Eng Lead analyze in parallel, and the QA/Critic challenges everything last. The orchestrator synthesizes all outputs into a hybrid Markdown + YAML plan.

---

When to Use This Skill

Load this skill when the user request matches ANY of these patterns:

Trigger Pattern	Example User Request
Implementation planning	"Create an implementation plan for X"
Feature planning	"Plan how we'd build X"
Project scoping	"Break down X into phases and workpackages"
Post-research planning	"We've researched X, now create a plan"
Task brief creation	"Create a task brief for X"

DO NOT use for:

• Initial topic research (use bulwark-research first)
• Feasibility brainstorming (use bulwark-brainstorm)
• Quick technical questions (ask directly)
• Code review or debugging (use code-review or issue-debugging)

---

Dependencies

Category	Files	Requirement	When to Load
Plan output template	templates/plan-output.md	REQUIRED	Load at Stage 5 for plan structure
Critic output template	templates/critic-output.md	REQUIRED	Include in QA/Critic agent prompt
Synthesis template	templates/synthesis-output.md	REQUIRED	Use when writing synthesis
Diagnostic template	templates/diagnostic-output.yaml	REQUIRED	Use at Stage 6
Role output reference	templates/role-output.md	OPTIONAL	Reference for parsing agent outputs
Subagent prompting	subagent-prompting skill	REQUIRED	Load at Stage 1 for 4-part prompt template
Research synthesis	--research <file>	OPTIONAL	If provided, include in all agent prompts

Fallback behavior:

• If an agent fails to spawn: Re-spawn once. If still fails, skip that role and document in synthesis under "Incomplete Coverage"
• If PO fails: STOP — all downstream agents depend on PO output. Inform user.
• If output template is missing: Use the schema from this SKILL.md directly
• If research synthesis not provided: Agents work from problem statement alone (warn user that quality may be lower)

---

Mandatory Execution Checklist (BINDING)

Every item below is mandatory. No deviations. No substitutions. No skipping.

This skill uses a multi-stage pipeline. You are the orchestrator. Follow every item in order. Do NOT return to the user until all applicable items are checked.

• Stage 1 — Pre-Flight: Topic parsed (from argument, --doc, or AskUserQuestion)
• Stage 1 — Pre-Flight: subagent-prompting skill loaded
• Stage 1 — Pre-Flight: If topic is ambiguous or under-specified, AskUserQuestion interview conducted (2-3 questions per round)
• Stage 1 — Pre-Flight: If --research not provided, user warned via displayed message AND asked to confirm proceeding
• Stage 1 — Mode Detection: $CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS env var checked — you MUST check this, no exceptions
• Stage 1 — Mode Detection: If env var is SET, user offered choice via AskUserQuestion (Agent Teams vs Task tool) — you MUST NOT default silently
• Stage 1 — Mode Detection: If user selects Agent Teams, AT Confirmation Flow executed (RED banner + model class choice)
• Stage 2 — Product Owner: PO spawned via Task tool (plan-creation-po, Opus) and output read
• Stage 3A or 3B: Correct mode executed based on user's Stage 1 choice
• Stage 3A (Task tool): Architect + Eng Lead spawned in parallel via Task tool with all prior outputs
• Stage 3B (Agent Teams): Agent files read, delegate mode entered, 3 teammates spawned with correct model class
• Stage 3B (Agent Teams): Lead enforces Work-Complete Confirmation Gate, Re-Entry Gate, and Shutdown Gate (rendezvous before synthesis) — synthesis MUST NOT begin until all teammates have explicit YES confirmation AND 30s quiet period has elapsed
• Stage 4 — QA / Critic: (Task tool mode 3A only — in 3B mode the critic is embedded in the team) QA/Critic spawned with all 3 prior outputs and output read
• Stage 5 — Synthesis: ALL role outputs read, synthesis written, plan drafted using template
• Stage 5 — Consistency: Before writing the plan, verify executive_summary.workpackage_count == sum(phase.workpackages.length for phase in phases). If counts disagree, re-derive the executive summary count from the structured phase blocks and emit a process_notes entry in the Stage 6 diagnostic flagging the drift.
• Stage 5 — Approval: Plan presented to user via AskUserQuestion — you MUST NOT write the final plan without user approval
• Stage 5 — Plan Written: Final plan written to plans/{slug}/plan_v{N}.md
• Stage 6 — Diagnostics: Diagnostic YAML written to $PROJECT_DIR/logs/diagnostics/

---

Usage

/plan-creation <topic-or-prompt> [--research <synthesis-file>]
/plan-creation --doc <path-to-document> [--research <synthesis-file>]

Arguments:

• <topic-or-prompt> - Free-text topic description or problem statement
• --doc <path> - Use a document as the topic source
• --research <synthesis-file> - Path to research synthesis (from bulwark-research or bulwark-brainstorm). Strongly recommended.

Examples:

• /plan-creation "add user authentication" --research logs/research/auth/synthesis.md
• /plan-creation --doc plans/proposal.md
• /plan-creation "migrate database to PostgreSQL"

Plan Versioning:

Plans are written to plans/{slug}/plan_v{N}.md with automatic version detection:

Scenario	Version	Example
First plan for a topic	v1	plans/add-auth/plan_v1.md
Minor revision (user iterates on current plan)	v1.1, v1.2	Approval gate feedback → revision
Major version (full re-run or pivot)	v2, v3	New invocation for same slug

The skill checks for existing plans/{slug}/plan_v*.md files before writing. When ambiguous (re-run vs revision), it asks the user.

---

Stages

Stage 1: Pre-Flight

Stage 1: Pre-Flight
├── Read problem statement / document
├── Load research synthesis if --research provided
├── AskUserQuestion if ambiguous (iterative, 2-3 questions per round)
├── Slugify topic for output directory
├── Create output directory: $PROJECT_DIR/logs/plan-creation/{slug}/
├── Load subagent-prompting skill
├── Detect mode: Task tool (default) or Agent Teams (opt-in)
└── Token budget check (warn if >30% consumed)

AskUserQuestion Protocol (Pre-Spawn):

If the problem statement is ambiguous, under-specified, or could benefit from scope boundaries:

1. Ask 2-3 clarifying questions using AskUserQuestion
2. Assess whether the answers provide sufficient clarity to construct high-quality prompts
3. If not, ask up to 3 more questions in a follow-up round
4. Repeat until clarity is achieved (no hard cap on rounds, but each round is 2-3 questions max)
5. If the problem statement is clear and well-scoped from the start, skip this step and note in diagnostics: pre_flight_interview: skipped (problem statement sufficient)

If --research was not provided, warn the user: "No research synthesis provided. Plan quality is significantly higher when preceded by /bulwark-research or /bulwark-brainstorm. Proceed without research?"

Mode Detection:

1. Check $CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS env var
2. If env var is SET: offer user choice via AskUserQuestion — "Agent Teams enhanced mode is available. Use Agent Teams or Task tool?" Default to Task tool if user doesn't specify.
3. If env var is NOT SET: use Task tool mode. If user explicitly requested Agent Teams, notify: "Agent Teams requires CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1. Using Task tool mode."

AT Confirmation Flow (if user selects Agent Teams):

Execute this confirmation flow BEFORE spawning any teammates:

Step 1 — Display RED warning banner using ANSI color \033[38;2;255;154;150m (#FF9A96):

⚠️  NOTICE: Claude Code's Agent Teams is an experimental feature. Unexpected
issues like teammates being stuck or unresponsive may occur. Agent Teams mode
is also significantly more token-expensive than Task tool mode (4 concurrent
agents vs sequential sub-agents).

If you run into issues, start a new session and re-run /plan-creation.
If the final output does not match expectations, re-run with Task tool mode.

Step 2 — AskUserQuestion: model class + mode confirmation

Present a single question with 3 options:

Option	Label	Description
1	Opus agents (Recommended)	Higher quality analysis, highest token cost. Opus-class agents for all roles.
2	Sonnet agents	Good quality, lower token cost. Sonnet-class agents for all roles.
3	Switch to Task tool mode	Cancel Agent Teams and use sequential sub-agents instead.

• Option 1: proceed with Opus agents in AT mode (Stage 3B)
• Option 2: proceed with Sonnet agents in AT mode (Stage 3B)
• Option 3: fall back to Task tool mode (Stage 3A), skip AT entirely

Stage 2: Product Owner (Opus, Sequential — First)

Stage 2: Product Owner
├── Construct prompt using 4-part template
│   ├── GOAL: Explore codebase and produce requirements analysis for {topic}
│   ├── CONSTRAINTS: Do not make architectural decisions or estimate effort
│   ├── CONTEXT: Problem statement + research synthesis (if available)
│   └── OUTPUT: $PROJECT_DIR/logs/plan-creation/{slug}/01-product-owner.md
├── Spawn plan-creation-po agent via Task tool
│   ├── subagent_type: plan-creation-po
│   ├── model: opus (specified in agent frontmatter)
│   ├── Agent autonomously explores codebase (Glob, Grep, Read)
│   └── NO hardcoded document paths — agent discovers what's relevant
├── Read PO output from logs/plan-creation/{slug}/01-product-owner.md
└── Token budget check

CRITICAL — PO Autonomy: The PO agent MUST NOT receive hardcoded project document paths. Instead:

• PO receives the problem statement and (optionally) research synthesis
• PO is spawned as plan-creation-po subagent type
• PO autonomously explores the codebase using Glob, Grep, Read
• PO output documents which files it read and why

This makes the skill portable across any project.

Stage 3A: Scrum Team — Task Tool Mode

Stage 3A: Scrum Team (Task Tool Mode)
├── Read PO output in full
├── Construct 2 prompts using 4-part template:
│   ├── Technical Architect:
│   │   ├── GOAL: Analyze system design, components, integration, trade-offs for {topic}
│   │   ├── CONSTRAINTS: Do not estimate effort or sequence work
│   │   ├── CONTEXT: Problem statement + research synthesis + PO output (full text)
│   │   └── OUTPUT: $PROJECT_DIR/logs/plan-creation/{slug}/02-technical-architect.md
│   └── Engineering & Delivery Lead:
│       ├── GOAL: Produce WBS, estimates, dependencies, milestones, risk register for {topic}
│       ├── CONSTRAINTS: Do not redesign architecture — work with Architect's design
│       ├── CONTEXT: Problem statement + research synthesis + PO output (full text)
│       └── OUTPUT: $PROJECT_DIR/logs/plan-creation/{slug}/03-eng-delivery-lead.md
├── Spawn BOTH agents in parallel via Task tool (single message, 2 Task tool calls)
│   ├── subagent_type: plan-creation-architect (opus)
│   └── subagent_type: plan-creation-eng-lead (sonnet)
├── Read both outputs
└── Token budget check (checkpoint if >55%)

CRITICAL: Spawn both agents in a single message with 2 Task tool calls. Do NOT spawn sequentially.

Note: Both Architect and Eng Lead receive the PO output directly in their prompt CONTEXT. They do NOT read each other's output — they work independently in parallel. The QA/Critic cross-references their outputs in Stage 4.

Stage 3B: Scrum Team — Agent Teams Mode (Enhanced, Opt-In)

Pre-condition: User selected Agent Teams in Pre-Flight AND confirmed model class in AT Confirmation Flow.

Stage 3B: Scrum Team (Agent Teams Mode)
├── Read PO output in full (from Stage 2)
├── Read agent definition files from .claude/agents/:
│   ├── .claude/agents/plan-creation-architect.md
│   ├── .claude/agents/plan-creation-eng-lead.md
│   └── .claude/agents/plan-creation-qa-critic.md
├── YOU (the orchestrator) become the delegate-mode Scrum Lead
│   └── Your role: coordination ONLY — do not perform analysis yourself
├── Enter delegate mode with 3 teammates
├── Create shared task list with initial tasks:
│   ├── "[Architect] Analyze system design for {topic}"
│   ├── "[Eng Lead] Produce WBS and delivery plan for {topic}"
│   └── "[QA/Critic] Adversarially review all analyses for {topic}"
├── Spawn 3 teammates using agent file content as system prompts:
│   ├── Technical Architect (model: user's choice from AT Confirmation)
│   ├── Engineering & Delivery Lead (model: user's choice from AT Confirmation)
│   └── QA / Critic (model: user's choice from AT Confirmation)
├── Each teammate prompt MUST include (in addition to agent file content):
│   ├── Problem statement + research synthesis (if available)
│   ├── PO output (full text)
│   ├── Dual-output contract (see below)
│   ├── CC-ALL instruction (see below)
│   ├── Task list coordination instruction (see below)
│   └── Rendezvous instruction (see below)
├── Use in-process display mode (WSL2 safe — no tmux)
├── Shutdown gate: see below
└── Token budget check

Dual-Output Contract (include in EVERY teammate prompt):

You MUST produce two outputs:

1. Full analysis → Write to $PROJECT_DIR/logs/plan-creation/{slug}/{NN}-{role-name}.md using the Write tool. This is your SA2-compliant artifact. Include all analysis, tables, and findings.
2. Coordination summary → Send a 3-5 sentence summary of your key findings and conclusions to the Scrum Lead via mailbox. This is for coordination only — the full analysis is in the log file.

CC-ALL Instruction (include in EVERY teammate prompt):

When sending peer DMs with work instructions, challenges, or significant findings, you MUST CC every other teammate (including the Scrum Lead). Peer DMs without full-team CC are invisible to non-recipients and will be treated as stalled work. Format: include CC: <Teammate-A>, <Teammate-B>, Scrum-Lead at the top of the message. The CC-ALL convention replaces the prior CC-to-Lead pattern — every participant sees every cross-cutting peer message in real time.

Task List Coordination Instruction (include in EVERY teammate prompt):

When you receive work from a peer via DM (e.g., "review this section", "stress-test this estimate"), create a new task in the shared task list describing the peer-dispatched work before starting it. Mark it in_progress immediately. This gives the Scrum Lead visibility into peer-coordinated work.

Rendezvous Instruction (include in EVERY teammate prompt):

Your FINAL action before going idle is to send the Scrum Lead: "WORK COMPLETE — all tasks done, log written to {path}". Do NOT go idle without sending this message.

Work-Complete Confirmation Gate (MANDATORY) — Scrum Lead logic — YOU enforce this:

When a teammate sends WORK COMPLETE, do NOT mark them terminal. Instead:

1. Send the following DM to that teammate, CC all other teammates:

   "Confirm: have you incorporated ALL inbound debate feedback from this round? Reply YES when fully complete, NO if still iterating."

2. Await explicit YES response.
3. Only after receiving YES mark the teammate as terminal.
4. If the teammate replies NO or does not respond within the timeout, treat them as active — do NOT begin synthesis.

Reason: teammates often send WORK COMPLETE at initial draft, then iterate on peer feedback. Without this gate, synthesis excludes post-debate outcomes.

Re-Entry Gate (MANDATORY) — extends the Confirmation Gate:

If a teammate who previously confirmed YES sends any new peer DM, new WORK COMPLETE signal, or new content, mark them as re-active and require a fresh confirmation handshake (repeat the Confirmation Gate procedure). The previous confirmation is invalidated.

Reason: a teammate may confirm done, then re-engage after receiving a late peer DM. Without re-entry handling, the late iteration is missed.

Shutdown Gate (rendezvous before synthesis):

The Scrum Lead (you, the orchestrator) MUST NOT call requestShutdown for ANY teammate AND MUST NOT begin Stage 5 synthesis until ALL of the following are true:

1. All shared task list tasks are in terminal state (completed or blocked)
2. WORK COMPLETE + explicit YES confirmation received from ALL 3 teammates (per Confirmation Gate above)
3. All 3 log files exist and are non-empty:
   • logs/plan-creation/{slug}/02-technical-architect.md
   • logs/plan-creation/{slug}/03-eng-delivery-lead.md
   • logs/plan-creation/{slug}/04-qa-critic.md
4. Quiet period of 30 seconds with NO new peer DM activity AND NO re-active teammates (per Re-Entry Gate). If any new activity lands during the quiet period, reset the 30s timer and re-evaluate the Confirmation Gate for any re-active teammate.

If a teammate appears idle but has NOT sent WORK COMPLETE:

• Check the shared task list for in-progress tasks assigned to that teammate
• Send a status check message: "Status update? Are you still working on [task]?"
• Do NOT send requestShutdown — they may be executing a long tool call

AT Completion Banner (display after ALL teammates shut down):

After Agent Teams execution completes successfully, display an AMBER banner using ANSI color \033[38;2;255;244;176m (#FFF4B0):

ℹ️  Agent Teams is an experimental feature. If the final plan does not match
your expectations, try re-running /plan-creation with Task tool mode
(sequential sub-agents). Individual role outputs are preserved in
logs/plan-creation/{slug}/ for inspection.

Then proceed to Stage 5 (Synthesis) — Stage 4 is skipped in AT mode.

CRITICAL — Agent File Reuse: The 3 agent files in .claude/agents/ contain the role expertise (system prompts, output formats, tool constraints). For AT mode, read each file's content and use it as the teammate's system prompt. This keeps a single source of truth per role — the agent files serve both Task tool mode (via subagent_type) and AT mode (content embedded in teammate prompts).

Note: In AT mode, the QA/Critic participates throughout — it can challenge the Architect and Eng Lead via peer DMs during their analysis, not just after. This is the primary quality advantage over Task tool mode.

---

Stage 4: QA / Critic (Sonnet, Sequential — Last, Task Tool Mode ONLY)

Stage 4: QA / Critic
├── Load templates/critic-output.md
├── Read ALL 3 prior output files:
│   ├── 01-product-owner.md
│   ├── 02-technical-architect.md
│   └── 03-eng-delivery-lead.md
├── Construct prompt using 4-part template
│   ├── GOAL: Adversarially review all prior analyses — challenge assumptions, identify gaps, stress-test estimates, produce APPROVE/MODIFY/REJECT verdict
│   ├── CONSTRAINTS: Do not redesign or re-plan — only challenge and validate
│   ├── CONTEXT: Problem statement + research synthesis + ALL 3 prior outputs (full text) + critic-output.md template
│   └── OUTPUT: $PROJECT_DIR/logs/plan-creation/{slug}/04-qa-critic.md
├── Spawn plan-creation-qa-critic agent via Task tool
│   ├── subagent_type: plan-creation-qa-critic
│   └── model: sonnet (specified in agent frontmatter)
├── Read Critic output
└── Token budget check

CRITICAL: The QA/Critic MUST receive ALL 3 prior outputs in full. This is the entire point — the Critic cross-references PO requirements against Architect components against Eng Lead workpackages to find gaps.

Skip condition: If Agent Teams mode was used (Stage 3B), skip Stage 4 entirely — the QA/Critic already participated throughout Stage 3B via peer debate. Proceed directly to Stage 5.

Stage 5: Synthesis & Plan Output (SHARED — Mode-Aware)

Stage 5: Synthesis
├── Read ALL 4 agent output files (MANDATORY — do not skip any):
│   ├── logs/plan-creation/{slug}/01-product-owner.md
│   ├── logs/plan-creation/{slug}/02-technical-architect.md
│   ├── logs/plan-creation/{slug}/03-eng-delivery-lead.md
│   └── logs/plan-creation/{slug}/04-qa-critic.md
├── If Agent Teams mode: also review lead coordination notes from the AT session
├── If any output is missing or empty → re-spawn that agent once (max 1 retry)
│   └── In AT mode: re-spawning is NOT possible — document gap in "Incomplete Coverage"
├── If retry fails → document gap in synthesis under "Incomplete Coverage"
├── Load templates/synthesis-output.md
├── Load templates/plan-output.md
├── Write synthesis to $PROJECT_DIR/logs/plan-creation/{slug}/synthesis.md
├── Compose plan draft:
│   ├── Executive Summary from synthesis consensus + PO problem statement
│   ├── YAML body from:
│   │   ├── Phases and workpackages: Eng Lead's WBS + Architect's component structure
│   │   ├── Milestones: Eng Lead's milestones
│   │   ├── Dependency graph: Eng Lead's dependency analysis + Architect's integration order
│   │   ├── Risks: Consolidated from all roles, prioritized by Critic
│   │   └── Kill criteria: From Critic's verdict
│   └── Apply Critic's MODIFY requirements (if verdict was MODIFY)
├── Present draft plan to user via AskUserQuestion approval gate
├── Critical Evaluation Gate (see below)
├── Determine plan version:
│   ├── Glob for existing plans/{slug}/plan_v*.md
│   ├── If none found: version = v1 (first plan)
│   ├── If user is iterating on the current plan (minor revision): bump minor (v1 → v1.1, v1.1 → v1.2)
│   ├── If user is starting fresh or pivoting: bump major (v1 → v2, v2 → v3)
│   └── When ambiguous, ask user: "This is a revision of the existing plan (v1.1) or a new plan (v2)?"
├── On approval: write final plan to plans/{slug}/plan_v{N}.md
├── Emit Stage 5 opt-in hint (see below) — discoverability for plan-to-tasks
└── Token budget check (must be <65% after synthesis)

Enforcement: Do NOT begin writing synthesis until ALL available agent outputs have been read. The orchestrator must reference every agent's output at least once in the synthesis.

Stage 5 opt-in hint (P10.5) — after writing the plan, emit this 3-line hint to the user:

Next step (optional): To generate executable task structure from this plan, run:

/plan-to-tasks plans/{slug}/plan_v{N}.md

The skill will produce a structured tasks.yaml (workpackage index) and per-workpackage YAML files for execution-ready task tracking. No-op cost when ignored; discoverable when needed.

Critical Evaluation Gate (Post-User Q&A)

After each AskUserQuestion round, do NOT blindly incorporate user responses. Instead:

Step 1 — Classify each user response:

Classification	Definition	Action
Preference	Scope, priority, or UX choice (e.g., "I'd prefer v1 to focus on X", "Let's defer Y")	Incorporate directly. These are user decisions — no validation needed.
Technical Claim	Assertion about a technology, library, or API (e.g., "Library X supports this", "That API has rate limits")	Do NOT incorporate. Trigger Step 2.
Architectural Suggestion	Proposed structural approach (e.g., "What if we structure it as a plugin?", "We could use event sourcing")	Do NOT incorporate. Trigger Step 2.

Step 2 — For Technical Claims and Architectural Suggestions, present to user:

"Your suggestion about [X] involves a technical claim / architectural approach that hasn't been validated against the codebase and research. I recommend a targeted follow-up with 2 focused agents (Technical Architect + QA/Critic) to verify feasibility and stress-test the approach.

This will spawn 2 agents and consume additional token budget.

[Run follow-up validation / Incorporate as-is with LOW confidence caveat]"

Step 3 — If follow-up validation approved:

1. Spawn 2 agents in parallel (single message, 2 Task tool calls):
   • Technical Architect (plan-creation-architect) — validates the suggestion against the codebase and research
   • QA/Critic (plan-creation-qa-critic) — stress-tests the suggestion
2. Use the same 4-part prompt template (GOAL/CONSTRAINTS/CONTEXT/OUTPUT)
3. Provide both agents with: original research synthesis, PO output, and the specific user suggestion
4. Output to: $PROJECT_DIR/logs/plan-creation/{slug}/followup-{NN}-architect.md and followup-{NN}-critic.md
5. Read both outputs, then update plan with validated findings
6. Tag follow-up findings in plan with: [Follow-up: validated] or [Follow-up: refuted] or [Follow-up: mixed — see details]

Step 4 — If user declines follow-up:

Incorporate the user's suggestion into the plan with an explicit caveat:

[Unvalidated — user suggestion, not verified against codebase or research]: {suggestion}

Repeat: After updating the plan, ask if user has additional input. Apply the same classification gate to each round. Each round with Technical Claim / Architectural Suggestion input that triggers validation consumes ~10-15% token budget (2 agents) — warn user if approaching 55%.

Stage 6: Diagnostics (REQUIRED)

Stage 6: Diagnostics
├── Write diagnostic YAML to $PROJECT_DIR/logs/diagnostics/plan-creation-{YYYYMMDD-HHMMSS}.yaml
└── Verify Mandatory Execution Checklist (top of skill)

---

Execution Flow (F# Pipeline)

// Task tool mode (default)
ProductOwner(topic, research?)                          // Stage 2: Opus, solo
|> [Architect, EngDeliveryLead](po_output)              // Stage 3A: parallel Task tool
|> QACritic(all_prior_outputs)                          // Stage 4: sequential Task tool
|> Synthesis |> ApprovalGate |> PlanOutput(plan_v{N})   // Stage 5: versioned output

// Agent Teams mode (enhanced, opt-in)
ProductOwner(topic, research?)                          // Stage 2: Opus, Task tool (solo)
|> AgentTeam[Architect, EngDeliveryLead, QACritic](po_output)  // Stage 3B: peer debate
|> Synthesis |> ApprovalGate |> PlanOutput(plan_v{N})   // Stage 5: versioned output
// Note: Stage 4 skipped in AT mode — QA/Critic participates throughout Stage 3B

---

Token Budget Management

Checkpoint	Threshold	Action
After constructing PO prompt	>30% consumed	Warn user: "4 agents will consume significant context"
After reading Stage 3A outputs	Running tally	If approaching 55%, checkpoint with user
After synthesis	Must be <65%	Leave room for plan approval + session closing
Synthesis complete at >65%	Immediate	Write plan as-is, create handoff, do not start additional work

If token budget is insufficient to complete all 4 agents + synthesis, inform the user and suggest splitting (e.g., "PO + Architect/Eng Lead this session, Critic + synthesis next session").

---

Error Handling

Both modes:

Scenario	Action
Agent returns empty output	Re-spawn once. If still empty, document gap in synthesis.
Agent returns truncated output	Accept as-is, note in diagnostics.
Agent fails to spawn	Re-spawn once. If still fails, skip role, document.
PO fails	STOP — subsequent agents depend on PO. Inform user.
Token budget exceeded mid-session	Stop spawning, synthesize from available outputs, note incomplete.
Research synthesis not provided	Warn user, proceed with lower quality.
User rejects plan draft	Ask what needs to change, re-enter Critical Evaluation Gate.

Agent Teams mode only:

Scenario	Action
Teammate appears stuck (no WORK COMPLETE, no task updates)	Send status check via mailbox. Wait for response before any shutdown attempt.
Teammate never sends WORK COMPLETE	After status check + 1 follow-up, check if log file was written. If log exists and is non-empty, treat as implicit completion. Document in diagnostics.
Peer DM traffic invisible to non-recipients	Mitigated by CC-ALL convention — every peer DM must CC all teammates including the Scrum Lead. Rely on CC-ALL message stream and task list state.
One teammate fails, others succeed	Document gap. Do NOT shut down working teammates — let them complete. Synthesize from available outputs.
AT env var absent but user requested AT	Notify user, fall back to Task tool mode (Stage 3A).
User selects "Switch to Task tool" in AT Confirmation	Execute Stage 3A instead. No AT infrastructure spawned.

---

Diagnostic Output (REQUIRED)

MANDATORY: You MUST write diagnostic output after every invocation. This is Stage 6 and cannot be skipped.

Write to: $PROJECT_DIR/logs/diagnostics/plan-creation-{YYYYMMDD-HHMMSS}.yaml

Template: Use templates/diagnostic-output.yaml for the schema. Fill in actual values from the session.

---

Do NOT return to user until all applicable checkboxes can be marked complete.