[blessdyb]

Summary

• resolve all first-party Swift warnings reported by the App Store build
• make Store warnings fatal and add a log gate for diagnostics Xcode does not promote
• preserve report navigation, cross-queue delivery, session rules, and PEM/DER plugin trust behavior with focused tests
• bump Flowlight to 0.15.9 build 56 while keeping the unchanged system extension at 0.15.4 build 26
• publish the 0.15.9 release notes and regenerated site

Verification

• 825 tests, 0 failures
• warning-fix focused suites: 152 tests, 0 failures
• direct Release and App Store builds succeeded with no first-party Swift warnings
• Xcode project drift, warning fixtures, notarization fixtures, localization, signed catalog, release notes, and site checks passed
• independent high-effort code review: no findings

🤖 Generated with Claude Code