feat: Production-grade Polaris scan reliability#4
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- Harden Gemini integration: pinned SDK, JSON Schema output, 30s timeout,
90s total AI budget, gemini-2.5-flash fallback, sanitized error codes
- Graceful degradation: Gemini failure completes deterministic scan with
warning instead of failing the entire scan
- Strict AI evidence: AI findings require existing file, changed line,
exact redacted evidence, and verification agent approval
- Content protection: secrets redacted before Gemini, changed hunks only
- Trustworthy fixes: require exact unified diff, clean application,
syntax parsing, finding removal verification
- Secure apply: stale scan 409, concurrent apply idempotent
- Improved reporting: pending/success/failure/error lifecycle, coverage
and AI mode in summaries
- Retry support: POST /scans/{scan_id}/retry with auth
- Changed-line filtering and diff parsing
- Rule metadata with remediation guidance
- 21 new reliability tests, golden fixtures for all 4 formats
- CI workflow for backend tests, frontend checks, dep pinning
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Summary
Production-grade reliability overhaul for the Polaris scanner pipeline. Makes the system deterministic-first, evidence-driven, and resilient to AI failures.
Key Changes
Gemini Integration Hardening
google-genai==1.72.0, JSON Schema output, 30s per-call timeoutgemini-2.5-flashfallbackAI_RATE_LIMIT,AI_TIMEOUT,AI_INVALID_OUTPUT)Graceful Degradation
Strict AI Evidence Gate
Content Protection
Trustworthy Fixes
Improved Reporting
Retry Support
POST /scans/{scan_id}/retrywith authTests