Require explicit safe-output completion in Code Simplifier workflow

[Copilot]

Code Simplifier can complete with a successful agent job but no safe outputs, which leaves runs in a non-actionable “no output generated” state. This change tightens the workflow prompt so terminal paths always emit an explicit safe-output signal.

• Prompt completion contract

  • Replaced ambiguous “exit with message” instructions with explicit noop tool calls for both:
    • no candidate files in last 24h
    • no beneficial simplifications after analysis
  • Added a hard rule: finish by calling exactly one safe-output tool.

• Terminal action matrix

  • Clarified valid terminal outcomes:
    • noop (no recent code changes)
    • noop (no simplifications needed)
    • create_pull_request (validated meaningful simplifications)
    • report_incomplete (infrastructure/tooling blockers)
  • Explicitly disallowed plain-text-only completion.

• Compiled workflow artifact update

  • Regenerated code-simplifier.lock.yml metadata to reflect the updated prompt body.

## Output Requirements

You MUST finish by calling exactly one safe-output tool:

1. `noop` with the no-recent-code-changes message above
2. `noop` with the no-beneficial-simplifications message above
3. `create_pull_request` when meaningful validated simplifications are ready
4. `report_incomplete` when blocked by infrastructure/tooling failures

Do not finish with plain text only. The safe-output tool call is required.

[Copilot]

Pull request overview

This PR tightens the Code Simplifier agent’s completion contract to ensure every successful run emits an explicit safe-output signal (instead of sometimes ending with plain text and producing “no output generated”).

Changes:

• Replaced ambiguous “exit with …” terminal instructions with explicit noop safe-output tool calls for the two “no action” paths.
• Added a strict output requirement: the agent must finish by calling exactly one safe-output tool (noop, create_pull_request, or report_incomplete depending on outcome).
• Regenerated the compiled workflow artifact (code-simplifier.lock.yml) to reflect the updated prompt body.

Show a summary per file

File	Description
.github/workflows/code-simplifier.md	Updates terminal-path instructions to require explicit safe-output tool completion (noop/create_pull_request/report_incomplete).
.github/workflows/code-simplifier.lock.yml	Updates compiled metadata (body hash) to match the prompt changes.

Copilot's findings

Tip

Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

• Files reviewed: 2/2 changed files
• Comments generated: 0