v2.33.86

Fixed

• macOS setup couldn't build dump1090 from source. The build relied on pkg-config to find librtlsdr; when it didn't, linking failed with "symbol(s) not found". Setup now points the build at Homebrew's librtlsdr directly. The ADS-B install hint also names dump1090-fa instead of the renamed dump1090-mutability. (#419)

Changed

• Lower memory use and faster correlation: the waterfall's IQ conversion uses about a third of the memory (#442), Sub-GHz Inspect's envelope view 84% less on 2 s windows (#443), and TSCM correlation is about 2.9x faster (#444). Thanks @dexhunter.
• Dependency minimums raised (scipy 1.15.3, gunicorn 26.2.0, flask 3.1.3, bleak 3.1.0, meshtastic 2.7.11, qrcode 8.2, cryptography 48.0.1, and dev tools), and CI actions updated (Docker actions v4, setup-python v7, Release Drafter v7). (#447–#461)