v1.4.10

Automated release: version and notes generated from pull requests merged since 1.4.9.

• loudness.py holds its --tp ceiling in the file it writes, not just in loudnorm's float output: the written file is measured and, when a lossy encoder overshot (ffmpeg's AAC at 192k turned one transient of a 12-minute film from -2.4 to +3.7 dBFS, so --tp -1 delivered +1.2 dBTP and check.py's fix hint looped back), it re-encodes at 256k then 320k when --audio-bitrate was not pinned, then with the ceiling lowered by the overshoot. result carries tp_ceiling_used, audio_bitrate_used, encodes and a note when the loudness moved more than 1 LU.
• SIGINT/SIGTERM stop the running ffmpeg (or sibling script), remove its partial output and exit with a failure document (kind: interrupted, exit 130/143). Before, SIGTERM killed only the Python parent and ffmpeg carried on as an orphan finishing a file nobody verified; SIGINT was a traceback with the partial left on disk.
• A path with an apostrophe (Ryo's Mac/cues.srt, lu't.cube) reaches subtitles=, ass=, lut3d= and fontsdir= intact: escape_filter_path now writes the three backslashes the two-level filter parser needs for ' (one was consumed as a quote, so ffmpeg opened Ryos Mac/cues.srt).
• fix: loudness holds --tp in the written file; SIGINT/SIGTERM stop ffmpeg cleanly; apostrophes in filter paths (#184)

What's Changed

• fix: loudness holds --tp in the written file; SIGINT/SIGTERM stop ffmpeg cleanly; apostrophes in filter paths by @claude[bot] in #184

Full Changelog: v1.4.9...v1.4.10