Agent Skills: Implementing

Implementing

You are implementing an approved technical plan, executing it phase by phase with verification at each step. Each phase is executed as a background sub-agent via desplega:phase-running — the main session acts as an orchestrator.

Working Agreement

All user-facing questions go through AskUserQuestion — see desplega:ask-user for conventions. Never ask in chat as plain bullets.

All read/research/validation work goes through sub-agents — keep raw tool output out of the main session. Default to run_in_background: true.

The autonomy mode (below) controls how often you check in. AskUserQuestion is always the mechanism.

File-review is on by default — when significant changes land in a phase, invoke /file-review:file-review <path> for inline feedback (skip only if Autopilot).

When to Use

This skill activates when:

• User invokes /implement-plan command
• Another skill references **REQUIRED SUB-SKILL:** Use desplega:implementing
• User asks to execute or implement an existing plan

Autonomy Mode

Adapt your behavior based on the autonomy mode:

| Mode | Behavior | |------|----------| | Autopilot | Execute all phases, pause only for manual verification or blockers | | Critical (Default) | Pause between phases for approval, ask when mismatches found | | Verbose | Check in frequently, confirm before each major change |

The autonomy mode is passed by the invoking command. If not specified, default to Critical.

Initial Setup Questions

After establishing user preferences, use AskUserQuestion to gather implementation-specific details:

1. Branch/Worktree Setup

First, check the current branch: git branch --show-current

Then check if the wts plugin is available (look for wts:wts in available skills).

If wts plugin is installed, use AskUserQuestion with these options:

| Question | Options | |----------|---------| | "You're currently on branch <current-branch>. Where would you like to implement?" | 1. Continue on current branch, 2. Create a new branch, 3. Create a wts worktree |

If wts plugin is NOT installed, use AskUserQuestion with:

| Question | Options | |----------|---------| | "You're currently on branch <current-branch>. Where would you like to implement?" | 1. Continue on current branch, 2. Create a new branch |

2. Commit Strategy

Use AskUserQuestion with these options:

| Question | Options | |----------|---------| | "How would you like to handle commits during implementation?" | 1. Commit after each phase (Recommended for complex plans), 2. Commit at the end (Single commit for all changes), 3. Let me decide as I go |

If "Commit after each phase" is selected:

• After completing each phase's verification, create a commit with message: [Phase N] <phase name>
• Use the plan's phase descriptions for commit messages

Store these preferences and apply them throughout the implementation.

Prior Learning Recall

OPTIONAL SUB-SKILL: If ~/.agentic-learnings.json exists, run /learning recall <current topic> to check for relevant prior learnings before proceeding.

Getting Started

When given a plan path:

1. Read the plan completely
2. Check for existing checkmarks (- [x])
3. Set plan status to status: in-progress by editing the frontmatter status field. This signals to progress-tracking hooks which plan is active.
4. Read files fully - never use limit/offset parameters
5. Think deeply about how the pieces fit together
6. Create a todo list to track progress
7. Start implementing if you understand what needs to be done

If no plan path provided, ask for one.

Implementation Philosophy

Plans are carefully designed, but reality can be messy. Your job is to:

• Follow the plan's intent while adapting to what you find
• Implement each phase fully before moving to the next
• Verify your work makes sense in the broader codebase context
• Update checkboxes in the plan as you complete sections

When things don't match the plan exactly, think about why and communicate clearly.

Handling Mismatches

If you encounter a mismatch (and autonomy mode is not Autopilot):

• STOP and think deeply about why the plan can't be followed
• Use AskUserQuestion to present the issue and get direction:

| Question | Options | |----------|---------| | "Issue in Phase [N]: Expected [what the plan says], Found [actual situation]. Why this matters: [explanation]. How should I proceed?" | 1. Adapt plan to match reality, 2. Proceed as originally planned, 3. Stop and discuss |

In Autopilot mode, use best judgment and document decisions in comments.

Verification Approach

Each phase is executed via a background sub-agent running desplega:phase-running:

1. Read the phase overview in the main session (minimal context usage)
2. Spawn a desplega:phase-running agent in background with plan path + phase number:
   • Use the Agent tool with run_in_background: true
   • Pass the plan path and phase number as context
3. Wait for agent completion — you'll be notified when it finishes
4. Review the agent's report — check status (completed/blocked/failed), changed files, verification results
5. Check QA Doc status — if the phase agent reports QA Doc: <path>, the linked QA doc has scenarios that need execution. Invoke desplega:qa against the QA doc path. (For QA: n/a, proceed normally.) Note: Automated QA items inside the phase's Success Criteria block are already handled by the phase agent — only the linked QA doc needs separate orchestration here.
6. Handle manual verification with the user — present the manual verification items from the phase
7. Proceed to next phase after user confirms

The implementing skill is an orchestrator — it coordinates phases, handles human checkpoints, and manages cross-phase decisions, but delegates actual implementation work to phase-runner sub-agents.

Pause for Human Verification (if not Autopilot or executing multiple phases)

Phase [N] Complete - Ready for Manual Verification

Automated verification passed:
- [List automated checks that passed]

Please perform the manual verification steps listed in the plan:
- [List manual verification items from the plan]

Let me know when manual testing is complete so I can proceed to Phase [N+1].

If instructed to execute multiple phases consecutively, skip the pause until the last phase.

Do not check off manual testing items until confirmed by the user.

If You Get Stuck

When something isn't working as expected:

1. Make sure you've read and understood all relevant code
2. Consider if the codebase has evolved since the plan was written
3. Present the mismatch clearly and ask for guidance (unless Autopilot)
4. Use sub-tasks sparingly for targeted debugging

Resuming Work

If the plan has existing checkmarks:

• Trust that completed work is done
• Pick up from the first unchecked item
• Verify previous work only if something seems off

Learning Capture

OPTIONAL SUB-SKILL: If significant insights, patterns, gotchas, or decisions emerged during this workflow, consider using desplega:learning to capture them via /learning capture. Focus on learnings that would help someone else in a future session.

Completing Implementation

When all phases are complete and verified:

1. Set the plan frontmatter status field to completed.
2. Ensure automated verification checkboxes are updated.
3. Leave manual verification checkboxes unchecked until the user confirms completion.
4. Offer post-implementation auditing: "Would you like me to run /verify-plan for a post-implementation audit, then /review for a final quality check?"

Remember: You're implementing a solution, not just checking boxes. Keep the end goal in mind.

Review Integration

File-review is on by default (unless Autopilot):

• After significant code changes in each phase, invoke /file-review:file-review <changed-file-path> for inline human comments
• Process feedback with the file-review:process-review skill before moving to the next phase