Sharpen demo delivery screenshots

[veil-chow-fyaic]

Outcome

Replaces every blurry delivery screenshot with a genuine high-resolution lossless PNG and publishes the documentation-only repair as 0.1.0a6. Screening behavior is unchanged from alpha.5.

Root cause

The first four files used a .png extension but contained 1425×1039 lossy JPEG data. GitHub scaled those images again in README rendering, making small CRM evidence text visibly soft.

Changes

• recapture four real CRM states from the running alpha stack at 2.5K-class resolution;
• rebuild the REST/CLI/MCP parity visual at 2560×1600;
• make every README and walkthrough image clickable to its lossless original;
• regenerate the 14-page Chinese PDF with the sharp assets;
• add a documentation gate that rejects missing, non-PNG, or undersized delivery images;
• align package, API, Compose, release, and handoff metadata to 0.1.0a6.

Validation

• all five delivery assets are genuine PNGs; CRM captures are 2295×1600 and the parity visual is 2560×1600;
• live CRM states were verified as EU FSF candidate RED/HOLD, 3A001 MATCHED, and CHPL TIER_3_A evidence request;
• updated PDF: 14 A4 pages, rendered and visually inspected as a complete contact sheet plus critical screenshot pages;
• ./scripts/check.sh: 2,088 passed, 100% statement/branch coverage, contracts/docs/OpenAPI/build/dependency gates passed.