arch-skill

This skill runs alongside the existing /prompts:* commands:

• Use it to decide which prompt to run next and to enforce the workflow invariants.
• Then invoke the prompt directly (preferred) or load its markdown procedure on demand.

When to Use

• User asks for architecture planning, a phased plan, a call-site audit, or "arch_skill flow".
• Work needs a single plan doc + worklog and minimal, credible verification.
• You want to route the user to the correct /prompts:* command (and keep the process consistent).

Non‑Negotiables (Workflow Invariants)

• Single-document rule (SSOT): exactly one plan doc under docs/ is authoritative. Worklog is derived from it.
• Code is ground truth: anchor claims in file paths/symbols/commands; do not speculate.
• Minimal verification: prefer existing tests/commands; avoid inventing new harnesses by default.
• No fallbacks: do not propose or implement runtime fallbacks/shims/placeholder behavior unless explicitly approved in the plan doc (fallback_policy: approved + Decision Log entry).
• Question policy (strict): only ask questions that cannot be answered by searching the repo/docs/fixtures or running existing tooling.
• Output format: when you invoke a prompt, follow that prompt's output format (don't restate style rules here).