Seer SnowBrowser v2.2.0

Highlights

• Adds the audited Douyin favorites batch extension (1.1.0).
• Adds the bounded configured-extension runtime used by SeerApp.
• Enforces LF checkout bytes for the pinned extension so integrity hashes remain stable on Windows.
• Preserves fail-closed extension loading, bounded execution, and exact cleanup ownership.

Verification

• Release-scope tests: 80/80 passed.
• Real Chrome cross-repository smoke: plugin 1.1.0 loaded under SnowBrowser 2.2.0 with fingerprint 2368ce76df7eec3dd24783b4ed31f3ba719757dad255441f73c89410f428bde1; external writes remained disabled.
• Full suite: 989 passed; 9 Playwright-only tests were unavailable because the optional playwright package is not installed in this environment.