gemini-review

Invoke Gemini for design/code review. PROACTIVE: (1) BEFORE proposing new features/architecture, (2) AFTER >100 lines or >3 files changed (before tests), (3) AFTER security/perf changes, (4) ON SESSION RESUME - check thresholds first. Triggers on "new feature", "architectural decision", "security review", "performance review", "code review", "gemini review", "debug", "cross-service", "data flow", "frontend backend", "analysis", "implementation complete", "run the tests", "commit these", "modified multiple files", "session resumed", "context compaction", "left off", "I've implemented", "I've added", "I've modified", "changes are done", "done implementing", "finished implementing", "implementation is complete", "let me run", "now let me test", "rebuild", "make rebuild", "pytest", "all tests pass", "tests pass", "fixed the", "added the", "updated the".