feat(skills): add verified skill fast-path

[senoldogann]

Scope

Implements #75 and the approved Sovereign design §7: a conservative verified-skill fast-path that eliminates model decision turns only when a skill is proven, exact-match, environment-compatible, and composed entirely of coordinate-free semantic instructions.

Current stage: TDD RED.

Safety invariants:

• reuse the existing OodaRunner; no second physical executor
• no stored coordinate or mark-index replay
• semantic clicks must resolve against the current AX surface
• any mismatch/error falls back to the normal provider
• permission, kill-switch, focus/staleness, bounds, verification, recovery, and completion-audit gates remain authoritative

Implementation plan: docs/superpowers/plans/2026-09-08-verified-skill-fast-path.md

RED regressions currently cover confidence/environment eligibility, outcome history, coordinate-free distillation, exact AX target resolution, zero-fallback-call success, and mismatch/error fallback.