Fix DVD extraction path error on Windows root drives, bump to 0.9.3

Path::file_name() returns None for Windows root paths like "D:\",
causing the full path (including colon) to be embedded in the temp
filename. Strip illegal characters in both the Rust worker and Dart UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Update Windows deps SHA256/size, add deps-version.json step to releas…

…e checklist

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Update Windows deps SHA256/size, add deps-version.json step to releas…

…e checklist

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Bump version to 0.9.1

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Make 30 advanced QTGMC parameters optional and fix missing template b…

…locks

Parameters like TrueMotion, GlobalMotion, DCT, SubPelInterp, ThSAD1/2,
ThSCD1/2, and 22 others were always passed to QTGMC even when the user
hadn't touched them. Tools like Hybrid don't expose these at all — they
should be optional so QTGMC uses its own preset-driven defaults.

- Mark 30 QTGMC parameters as optional in deinterlace.json schema
- Add 5 missing template blocks (Str, Amp, FastMA, ESearchP, RefineMotion)
  to pipeline_template.vpy — these params had no template substitution
- Add corresponding process_optional_* calls in script_generator.rs
- Fix OpenCL vapoursynth.name casing (OpenCL→opencl) to match template

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Add display aspect ratio correction for anamorphic DVD previews

Compute DAR from SAR metadata (e.g. 32:27 for anamorphic DVDs) and
pass it to the before/after comparison widget, which uses FittedBox
to stretch the preview to the correct display aspect ratio.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Streamline README for end users, move technical docs to docs/

README now focuses on download/install, features, and usage.
Build instructions moved to docs/BUILDING.md. Custom filter
schema was already in docs/FILTER_SCHEMA.md. Updated feature
list with subtitles, batch queue, hardware encoding, etc.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Fix false telecine detection on VHS tapes, bump version to 0.7.1

Scan type detection was misclassifying interlaced PAL VHS content as hard
telecine because any single repeated field (repeatedFields > 0) triggered
telecine. VHS tapes produce stray repeated fields from tracking instability,
especially at the start. Now requires >= 15% repeated fields ratio, matching
real 3:2 pulldown (~40%) while filtering out VHS noise. Also skips the first
2s of longer videos to avoid unstable VHS leader sections.

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Fix package-macos.sh: find worker binary in arch-specific target dire…

…ctory

Co-Authored-By: Claude Opus 4.6 <[email protected]>

Remove zip packaging step from macOS build

The DMG is the distribution artifact; wrapping it in a zip is unnecessary. Updated step counts accordingly.