SeekQuote Web v0.1.14

- Adds server-side FFmpeg finalisation through normalize-video.php.
- Browser recording is now only an intermediate visual source.
- Final MP4 target is based on the known-good SeekQuote extension output:
  audio first (AAC-LC 44.1 kHz stereo ~126 kb/s), video second
  (H.264 High, yuv420p, 30fps, ~2.5 Mb/s, video timebase 1/600).
- Forces ~29-frame keyframe cadence observed in the working plugin file.
- Patches MP4 ftyp branding to mp42 / minor 1 / isom+mp41+mp42.
- Final movie remains silent so music can still be added inside TikTok.
- Retains RiK profile persistence and cross-version script history.
