csharp-change-budget-router

name	csharp-change-budget-router
description	Budget-first routing contract for C# work: estimate production-file scope, choose small vs large path, enforce orchestration-first routing for larger changes, and use the VS Code extension command surface for promotion lifecycle steps when available.

C# Change Budget Router

Canonical guidance for deciding whether work should stay on the small path or escalate to the full C# orchestration workflow.

When to Use This Skill

Use this skill when:

• Intake starts from a natural-language C# request.
• An agent must decide the execution path before planning or implementation.
• A direct-mode route must reject over-budget requests and switch to orchestrated flow.

Canonical Routing Rules

1. Estimate rough change budget first based on likely production C# files touched.
2. Route:

• 1-3 production files (+ corresponding tests) → small path (csharp-typed-engineer direct mode).
• >3 production files or >3 test files → large path (orchestration workflow with promotion/research/spec/planning/execution/review).

Orchestrated Small-Path Requirements

When routed through csharp-orchestrator, small path still requires lifecycle scaffolding before implementation:

• route promotion and active-folder lifecycle steps through repo-automation-adapter,
• promote potential item to GitHub issue with --work-mode minor-audit,
• create active feature folder with --work-mode minor-audit,
• delegate minimal-audit plan creation to atomic_planner with DIRECTIVE: MINIMAL-AUDIT PLAN REQUIRED,
• require atomic_executor preflight until PREFLIGHT: ALL CLEAR,
• execute Phase 0 only via atomic_executor before branching,
• run reduced small-audit after implementation and QC.

Direct invocation of csharp-typed-engineer remains implementation-focused and does not replace orchestrator lifecycle steps.

Direct-Mode Rejection Rule

If direct implementation is requested but estimated scope is >3 production files:

• Stop before implementation.
• Return explicit routing instruction to invoke csharp-orchestrator.

Documentation Expectations

Record in response/logs:

• estimated production file count,
• chosen path (small/large),
• rationale summary (1-3 bullets).