/shepherd

Shepherd

Shepherd PRs for: "$ARGUMENTS"

Workflow Position

/exarchos:synthesize → /exarchos:shepherd (assess → fix → resubmit → loop) → /exarchos:cleanup
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This command operates as an iteration loop within the synthesize phase. The workflow phase remains synthesize throughout.

Skill Reference

Follow the shepherd skill: @skills/shepherd/SKILL.md

Prerequisites

• Active workflow with PRs published
• PRs created via gh pr create (artifacts.pr exists in state)
• GitHub MCP tools available or gh CLI authenticated

Idempotency

Before shepherding, check shepherd status:

1. Read shepherd.currentIteration from state — resume from last iteration
2. If shepherd.approvalRequested is true, skip to approval wait
3. If workflow phase is completed, no action needed

Process

Step 0: Surface Quality Signals

mcp__plugin_exarchos_exarchos__exarchos_view({ action: "code_quality", workflowId: "<featureId>" })

Check for regressions and degrading gate pass rates before assessing PRs.

Step 1: Assess Stack

mcp__plugin_exarchos_exarchos__exarchos_orchestrate({
  action: "assess_stack",
  featureId: "<featureId>",
  prNumbers: [123]
})

Act on the recommendation:

• fix-and-resubmit — Proceed to Step 2
• request-approval — Skip to Step 4
• wait — Inform user, pause, re-assess after delay
• escalate — Report to user with escalation context

Step 2: Fix Issues

Address each actionItem from the assessment:

• ci-fix — Read CI logs, reproduce locally, fix, commit
• comment-reply — Read context, compose response, post via GitHub MCP
• review-address — Fix code for CHANGES_REQUESTED, reply to each thread
• restack — git rebase origin/<base>, verify with gh pr list

Step 3: Resubmit

git push --force-with-lease
gh pr merge <number> --auto --squash

Return to Step 1. Max 5 iterations — escalate if limit reached.

Step 4: Request Approval

When all checks green and comments addressed:

1. Request review via GitHub MCP or gh pr edit <number> --add-reviewer <approver>
2. Update state:

mcp__plugin_exarchos_exarchos__exarchos_workflow({
  action: "set",
  featureId: "<featureId>",
  updates: { "shepherd": { "approvalRequested": true } }
})

State Management

Initialize shepherd tracking on first run:

mcp__plugin_exarchos_exarchos__exarchos_workflow({
  action: "set",
  featureId: "<featureId>",
  updates: {
    "shepherd": {
      "startedAt": "<ISO8601>",
      "currentIteration": 0,
      "maxIterations": 5,
      "approvalRequested": false
    }
  }
})

Update currentIteration after each assess cycle.

Output

When approval requested:

## Ready for Approval

All CI checks pass. All review comments addressed.
Approval requested from: <approvers>

PRs:
- #123: <url>

Run `/exarchos:cleanup` after merge completes.

Error Handling

• CI keeps failing after fixes: Escalate to user after 5 iterations with failure context
• Workflow not found: "No active workflow found. Run /exarchos:rehydrate to restore state."
• No PRs in state: "No PRs found in artifacts. Run /exarchos:synthesize first."

Auto-Chain

After approval requested:

1. Output: "All CI checks pass. Approval requested."
2. PAUSE for user input — this is within the synthesize human checkpoint
3. On merge confirmed → Run /exarchos:cleanup