Skill: Rebuild Contract Guard

Goal

Block contract violations before code is written.

Trigger

Any PR that changes rebuild UI behavior, SSR/CSR boundaries, hydration behavior, loading states, tooltip behavior, confidence/trust display.

Required steps

1. •Identify applicable rebuild contracts from:
   • •docs/rebuild/NON_NEGOTIABLES.md
   • •docs/rebuild/TRUST_METRICS.md
   • •docs/rebuild/PRD_LITE.md
2. •State explicitly in the PR description:
   • •Which contracts apply.
   • •How this PR complies.

STOP conditions

• •Violates price immutability after first render.
• •Moves trust computation client-side.
• •Introduces hover-only critical meaning.
• •Introduces CLS risk on key surfaces.
• •Adds a second primitive variant.
• •Breaks rebuild isolation (imports from legacy into rebuild).

Required evidence checklist (declarative)

• •SSR-visible trust metadata: screenshots or notes (when applicable).
• •Test coverage expectation stated (even if tests are wired later).

Rebuild Isolation (LOCKED)

• •Rebuild implementation must live in a dedicated rebuild namespace/folder tree (name TBD).
• •Rebuild code MUST NOT import from legacy paths.
• •Legacy is read-only reference; reuse only after passing rebuild contracts.