Continue breaking down StreamProcess::startStream:
- extract resolveProbeSettings() (ffprobe/analysis timing) and
rotateSourcesPastCurrent() (source-failover ordering) as private static
helpers, with unit tests locking in their behaviour;
- simplify 15 inverted empty-if/else blocks across the class into a single
positive condition (no behaviour change).
Also fix the latent undefined-variable bugs the refactor surfaced under PHPStan:
startStream assembles the ffmpeg command from state produced inside the source
failover loop (which closes before the command is built) and inside the
non-custom_ffmpeg branch. On an empty source list, or when a custom ffmpeg line
is used, several variables were read while possibly undefined -- masked at
runtime only by ternary guards and suppressed in the PHPStan baseline. Default
them at the two scopes that own them:
- loop-scoped, read after the loop: $rSource, $rRealSource, $rStreamSource,
$rProtocol, $rFFProbeOutput
- non-custom_ffmpeg-branch-scoped, read in the {MAP}/{GEN_PTS}/{READ_NATIVE}
substitution and delay sleep: $rMap, $rGenPTS, $rReadNative, $rSleepTime
and drop the 9 now-obsolete entries from phpstan-baseline.neon.
Behaviour is unchanged on the happy path (the loop/branch overwrite the
defaults) and the defaults match the existing runtime ternary-guard results.
Verified: phpstan level 5 green (whole project, entries un-suppressed),
phpunit 369/369, make gates green.
Divarion_D