Plugin Task Plan Skill

Role: Domain planning skill for plugin development tasks. Transforms solution outline deliverables into optimized, executable tasks that delegate to existing skills for implementation.

Key Pattern: Skill delegation with optimization - reads deliverables with metadata from solution_outline.md, applies aggregation/split analysis, creates tasks with delegation blocks and dependencies.

Contract Compliance

MANDATORY: All tasks MUST follow the structure defined in the central contracts:

Non-compliant tasks will be rejected by validation.

CRITICAL: The steps field MUST contain file paths the parent deliverable declares — under Affected files:, or under the Files expected to mutate: / Files to survey: pair a survey-scope deliverable declares instead:

# CORRECT - file paths from deliverable
steps:
  - marketplace/bundles/plan-marshall/agents/execution-context.md
  - marketplace/bundles/plan-marshall/skills/phase-3-outline/SKILL.md

# WRONG - descriptive text (violates contract)
steps[2]{number,target,status}:
1,Convert execution-context outputs,pending
2,Convert phase-3-outline skill outputs,pending

The steps field lists FILES TO MODIFY, not progress tracking entries.

Operation: plan

Input:

Process:

Step 1: Load All Deliverables

Read the solution document to get all deliverables with metadata:

python3 .plan/execute-script.py plan-marshall:manage-solution-outline:manage-solution-outline \
  list-deliverables \
  --plan-id {plan_id}

For each deliverable, extract:

• metadata.changetype, metadata.executionmode, metadata.domain
• metadata.suggestedskill, metadata.suggestedworkflow
• metadata.context_skills, metadata.depends
• affected_files, verification

Step 2: Build Dependency Graph

Parse depends field for each deliverable:

• Identify independent deliverables (depends: none)
• Identify dependency chains
• Detect cycles (INVALID - reject)

Step 3: Analyze for Aggregation

For each pair of deliverables, check if they can be aggregated:

• Same change_type?
• Same suggested_skill?
• Same execution_mode (must be automated)?
• Combined file count < 10?
• NO dependency between them? (CRITICAL - cannot aggregate if one depends on other)

Step 4: Analyze for Splits

For each deliverable, check for split requirements:

• execution_mode: mixed → MUST split
• Different concerns within → SHOULD split
• File count > 15 → CONSIDER splitting

Step 5: Log Optimization Decisions (REQUIRED)

After analyzing each deliverable or deliverable pair, log the decision:

# If aggregating deliverables
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-logging \
  work --plan-id {plan_id} --level INFO --message "[OPTIMIZATION] (pm-plugin-development:plugin-task-plan) Aggregating D{N}+D{M}: same skill ({skill}), no inter-dependency"

# If keeping deliverable separate
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-logging \
  work --plan-id {plan_id} --level INFO --message "[OPTIMIZATION] (pm-plugin-development:plugin-task-plan) Keeping D{N} separate: {reason}"

# If splitting deliverable
python3 .plan/execute-script.py plan-marshall:manage-logging:manage-logging \
  work --plan-id {plan_id} --level INFO --message "[OPTIMIZATION] (pm-plugin-development:plugin-task-plan) Splitting D{N}: execution_mode=mixed"

This logging is REQUIRED for audit trail and debugging.

Step 6: Create Optimized Tasks

For aggregated deliverables or single deliverables, create tasks using the three-step path-allocate flow: (1) prepare-add allocates a scratch TOON file under <plan>/work/pending-tasks/, (2) the skill writes the task definition to that path with the Write tool, (3) commit-add validates and creates TASK-NNN.json. No multi-line content crosses the shell boundary.

CRITICAL: The steps field MUST contain file paths copied from the deliverable's declared file surface — under Affected files:, or under the Files expected to mutate: / Files to survey: pair a survey-scope deliverable declares instead.

# Step 1: allocate a scratch path
python3 .plan/execute-script.py plan-marshall:manage-tasks:manage-tasks \
  prepare-add --plan-id {plan_id}
# → returns {path: /abs/.../work/pending-tasks/default.toon}

# Step 2: Write tool writes the TOON task definition to the returned path, e.g.:
#   title: {Action Verb} {Target}: {Scope}
#   deliverable: {n}
#   domain: plan-marshall-plugin-dev
#   phase: 5-execute
#   description: {combined description}
#   steps:
#     - marketplace/bundles/{bundle}/agents/{file1}.md
#     - marketplace/bundles/{bundle}/agents/{file2}.md
#   depends_on: {TASK-N | none}
#   delegation:
#     skill: {suggested_skill}
#     workflow: {suggested_workflow}
#     context_skills: {context_skills - MUST include even if empty []}
#   verification:
#     commands:
#       - {verification.command}
#     criteria: {verification.criteria}

# Step 3: commit — validates the file and creates TASK-NNN.json
python3 .plan/execute-script.py plan-marshall:manage-tasks:manage-tasks \
  commit-add --plan-id {plan_id}

Field mapping from deliverable to task:

CRITICAL: The context_skills field MUST always be included in the delegation block, even when empty. Tasks without this field violate the task-contract and will fail validation.

Example with real paths:

# Step 1: allocate
python3 .plan/execute-script.py plan-marshall:manage-tasks:manage-tasks \
  prepare-add --plan-id migrate-json-to-toon

# Step 2: Write tool writes the following TOON body to the returned path:
#   title: Migrate plan-marshall Agents to TOON Format
#   deliverable: 2
#   domain: plan-marshall-plugin-dev
#   phase: 5-execute
#   description: Convert all JSON output blocks to TOON format in plan-marshall phase components.
#   steps:
#     - marketplace/bundles/plan-marshall/agents/execution-context.md
#     - marketplace/bundles/plan-marshall/skills/phase-3-outline/SKILL.md
#     - marketplace/bundles/plan-marshall/skills/phase-4-plan/SKILL.md
#     - marketplace/bundles/plan-marshall/skills/phase-5-execute/SKILL.md
#   depends_on: TASK-1
#   delegation:
#     skill: pm-plugin-development:plugin-maintain
#     workflow: update-component
#     context_skills: []
#   verification:
#     commands:
#       - python3 .plan/execute-script.py plan-marshall:manage-architecture:architecture search --content --pattern '^\x60\x60\x60json'
#     criteria: count is 0 over clean coverage (client-api.md § search, "Complete-coverage rule")

# Step 3: commit
python3 .plan/execute-script.py plan-marshall:manage-tasks:manage-tasks \
  commit-add --plan-id migrate-json-to-toon

The fence in that verification pattern is written as the regex escape \x60, not as a literal backtick, and the call therefore drops --literal. This is deliberate and MUST be preserved: the project's PreToolUse enforcement hook matches its R1 shell-construct rule by plain substring over the whole command string, so a literal backtick is denied inside a plan worktree even when quoted — a verification command written with one can never run in the context it is written for. The ^ anchor is per line (re.MULTILINE), so the pattern reaches a fence opening any line of the file. See [manage-architecture/standards/client-api.md](../../../plan-marshall/skills/manage-architecture/standards/client-api.md) § search.

Step 7: Record Issues as Lessons

On ambiguous deliverable or planning issues, first run the canonical three-gate lesson-creation policy in marketplace/bundles/plan-marshall/skills/manage-lessons/standards/lesson-creation-policy.md — Gate 1 (dedup), Gate 2 (active-plan check), Gate 3 (create). The two-step path-allocate flow below is Gate 3, reached only when Gates 1 and 2 both clear; when Gate 1 returns mergeinto / alreadyclosed or Gate 2 finds a covering active plan, extend the existing lesson or fold into the plan instead of allocating a new one. Do not restate the gate mechanics — follow the standard.

When the gates clear, follow the two-step path-allocate flow:

1. Allocate a lesson file and capture the returned path:

python3 .plan/execute-script.py plan-marshall:manage-lessons:manage-lessons add \
  --component "pm-plugin-development:plugin-task-plan" \
  --category improvement \
  --title "{issue summary}"

1. Parse path from the output and write the lesson body (context + resolution approach, with ## sections as needed) directly to that path via the Write tool. This is the single supported API — there is no --detail inline form.

Valid categories: bug, improvement, anti-pattern

Step 8: Return Results

Output:

status: success
plan_id: {plan_id}

optimization_summary:
  deliverables_processed: {N}
  tasks_created: {M}
  aggregations: {count of deliverable groups}
  splits: {count of split deliverables}

tasks_created[M]{number,title,deliverables,depends_on}:
1,Create skill: java-logging-patterns,[1],none
2,Update plugin-maintain,[2 3],TASK-1
3,Refactor bundle structure,[4],none

lessons_recorded: {count}

Delegation Mapping

When creating tasks, map from deliverable metadata to stdin TOON fields:

Plugin-Specific Skill Mapping

Task Generation Patterns

These patterns show how to create tasks for different operation types. Note that steps always contains FILE PATHS.

Create Component Task

Deliverable: "Create new {skill|command|agent} for {purpose}"

The steps field lists files that WILL BE CREATED:

title: Create skill: java-logging-patterns
steps:
  - marketplace/bundles/pm-dev-java/skills/java-logging-patterns/SKILL.md
delegation:
  skill: pm-plugin-development:plugin-create
  workflow: create-skill

Modify Component Task

Deliverable: "Update {component} to {change description}"

The steps field lists existing files to MODIFY:

title: Update plugin-maintain Skill
steps:
  - marketplace/bundles/pm-plugin-development/skills/plugin-maintain/SKILL.md
delegation:
  skill: pm-plugin-development:plugin-maintain
  workflow: update-component

Migrate Task (Multiple Files)

Deliverable: "Migrate {components} to {new format}"

The steps field lists ALL files to migrate (copied from the declared file surface — Affected files, or the survey-scope pair):

title: Migrate plan-marshall Phase Components to TOON Format
steps:
  - marketplace/bundles/plan-marshall/agents/execution-context.md
  - marketplace/bundles/plan-marshall/skills/phase-3-outline/SKILL.md
  - marketplace/bundles/plan-marshall/skills/phase-4-plan/SKILL.md
  - marketplace/bundles/plan-marshall/skills/phase-5-execute/SKILL.md
delegation:
  skill: pm-plugin-development:plugin-maintain
  workflow: update-component

Script Task (Special Case)

Scripts are created within skills. The steps lists the script file AND its test:

title: Create script: manage-references
steps:
  - marketplace/bundles/plan-marshall/skills/manage-references/scripts/manage-references.py
  - test/plan-marshall/manage-references/test_manage_references.py
delegation:
  skill: pm-plugin-development:plugin-create
  workflow: create-skill

Parameter Extraction

When analyzing deliverables, extract these parameters:

For Create Operations

For Modify Operations

Multi-Task Deliverables

Some deliverables require multiple tasks in sequence:

Skill with Scripts

TASK-1: Create skill structure
  - Delegate to: plugin-create → create-skill

TASK-2: Create script(s)
  - Create Python script in skill/scripts/
  - Add test file
  - Update SKILL.md

Command with New Skill

TASK-1: Create supporting skill
  - Delegate to: plugin-create → create-skill

TASK-2: Create command
  - Delegate to: plugin-create → create-command
  - Reference skill from TASK-1

Task Dependencies

When creating multiple tasks:

Error Handling

Ambiguous Deliverable

If deliverable doesn't specify:

• Target bundle → Ask for clarification
• Component type → Infer from keywords or ask
• Operation type → Default to create unless "update/modify/fix" present

Missing Information

If deliverable lacks required parameters:

• Generate task with available info
• Note missing parameters in task description
• Record lesson for future reference

Integration

Caller: plan-marshall:execution-context (generic dispatcher, via workflow delegation)

Script Notations (use EXACTLY as shown):

• plan-marshall:manage-solution-outline:manage-solution-outline - Read solution and list deliverables (list-deliverables, read)
• plan-marshall:manage-tasks:manage-tasks - Create tasks via the three-step path-allocate flow (prepare-add → Write TOON → commit-add)
• plan-marshall:manage-lessons:manage-lessons - Record lessons on issues (add)
• plan-marshall:manage-logging:manage-logging - Log progress (work)

Skills Delegated To:

• pm-plugin-development:plugin-create - Component creation (handles validation and verification internally)
• pm-plugin-development:plugin-maintain - Component updates and refactoring (handles verification internally)

Contract Reference:

• plan-marshall:manage-tasks/standards/task-contract.md - Optimization workflow and decision tables