Plugin Plan Implement Skill

Role: Implement plugin-domain tasks by iterating through steps (file paths) and applying changes.

Execution Pattern: Load task → Load skills → Iterate steps → Apply changes → Verify → Return result

Scripts

Script	Purpose
`pm-workflow:manage-tasks:manage-tasks`	Task retrieval and progress tracking
`plan-marshall:manage-logging:manage-log`	Work log entries
`plan-marshall:manage-plan-marshall-config:plan-marshall-config`	Domain skill retrieval

Standards (Load On-Demand)

Step Execution

code

Read standards/step-execution.md

Contains: How to execute each step type (modify, create, etc.)

Input

Parameter	Type	Required	Description
`plan_id`	string	Yes	Plan identifier
`task_number`	number	Yes	Task to execute

Workflow

Step 1: Load Task Details

bash

python3 .plan/execute-script.py pm-workflow:manage-tasks:manage-tasks get \
  --plan-id {plan_id} \
  --number {task_number}

Extract from response:

•title: Task title for logging
•description: What changes to apply
•delegation.domain: For loading default skills
•delegation.context_skills: Additional skills
•steps[]: File paths to process
•verification: Commands and criteria

Step 2: Load Domain Skills

2a. Get Domain Defaults

bash

python3 .plan/execute-script.py plan-marshall:manage-plan-marshall-config:plan-marshall-config \
  skill-domains get-defaults \
  --domain {delegation.domain}

2b. Load Default Skills

code

Skill: {default_skill_1}
Skill: {default_skill_2}

2c. Load Context Skills

From task delegation block:

code

Skill: {delegation.context_skills[0]}
Skill: {delegation.context_skills[1]}

Step 3: Log Task Start

bash

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work {plan_id} INFO "[TASK] (pm-plugin-development:plugin-plan-implement) Starting task {task_number}: {title}"

Step 4: Execute Steps

For each step WHERE status == pending:

4a. Execute Step

The step title is a file path. Apply changes based on:

•Task description - overall change guidance
•Loaded skills - implementation patterns
•File type - markdown with YAML frontmatter for plugins

For plugin files (agents, commands, skills):

•Read the file
•Identify sections to update
•Apply changes per task description
•Write updated content

Load step execution patterns if needed:

code

Read standards/step-execution.md

4b. Log Step Progress

bash

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work {plan_id} INFO "[STEP] (pm-plugin-development:plugin-plan-implement) Completed step {step_number}: {file_path}"

4c. Finalize Step

bash

python3 .plan/execute-script.py pm-workflow:manage-tasks:manage-tasks finalize-step \
  --plan-id {plan_id} \
  --task {task_number} \
  --step {step_number} \
  --outcome done

Step 5: Run Verification

After all steps complete:

bash

# Execute each verification command
{verification.commands[0]}
{verification.commands[1]}

Log result:

bash

python3 .plan/execute-script.py plan-marshall:manage-logging:manage-log \
  work {plan_id} INFO "[VERIFY] (pm-plugin-development:plugin-plan-implement) Verification {passed|failed}: {criteria}"

Step 6: Return Result

Success Output:

toon

status: success
plan_id: {plan_id}
task_number: {task_number}

execution_summary:
  steps_completed: {N}
  steps_total: {M}
  files_modified[N]:
    - {path1}
    - {path2}

verification:
  passed: true
  command: "{verification command}"

next_action: task_complete

Error Output:

toon

status: error
plan_id: {plan_id}
task_number: {task_number}

execution_summary:
  steps_completed: {N}
  steps_failed: {M}

failure:
  step: {step_number}
  file: "{file path}"
  error: "{error message}"
  recoverable: true

next_action: requires_attention

Error Handling

Step Failure

If a step fails:

•Log error to work-log
•Do NOT mark step as done
•Continue to next step OR stop (based on severity)
•Include failure in result

Verification Failure

If verification fails:

•Log what failed
•Return error status with recoverable: true
•Task remains in_progress for retry

Constraints

File Access

•.plan/ files: ONLY via execute-script.py
•Marketplace files: Use Read/Write/Edit as needed

Progress Tracking

•Execute step
•Mark finalize-step AFTER success (outcome: done or skipped)
•Log progress at each step

Integration

Called By

•pm-plugin-development:plugin-plan-implement-agent - Thin wrapper agent

Uses

•pm-plugin-development:plugin-architecture - Architecture principles
•pm-workflow:manage-tasks - Task and step management
•plan-marshall:manage-logging:manage-log - Work logging
•Context skills from task delegation (loaded dynamically)

Related Skills

•pm-workflow:phase-5-execute - Generic plan execution orchestrator
•pm-plugin-development:plugin-maintain - Plugin maintenance operations