maestro-overlay

• Default (intent) — turn a natural-language instruction into one overlay interactively.
• --amend — signal-driven auto-generation: collect workflow deficiency signals from multiple sources, diagnose which commands need amendment, batch-generate targeted overlays.

Both modes use the same overlay system (~/.maestro/overlays/*.json) — non-invasive, idempotent, survives reinstall.

Overlay model:

• JSON file: name, targets[] (command names), patches[]
• Patch: section (XML tag), mode (append/prepend/replace/new-section), content
• Apply: hashed HTML-comment markers (idempotent, surgical removal)