Restore tractability evidence views and fix graph clipping

[rafwiewiora]

Stacked on #3, which provides the server-native scientific result surface.

Summary

• restore separate Representative branch fit, Retrieved precedent, and Computed pocket evidence controls
• keep precedent and computed views categorical and native-derived with no fabricated scalar score
• update inspector interpretation and axis language with the selected tractability view
• replace raw successful replay reason codes on node cards with judge-facing summaries while retaining exact codes in audit details
• dock the inspector on wide screens and wrap long progress, status, and scientific content
• add regression coverage for live-mode controls, native source paths, audit-code handling, and anti-clipping layout rules

Verification

• bun test: 29 passed
• bun verify_functional_app.mjs
• bun verify_mockup.mjs
• orchestrator unittest suite: 97 passed
• Ruff passed