v1.4.14

Automated release: version and notes generated from pull requests merged since 1.4.13.

• Boundary sweep (561 runs, 42 tools × 23 inputs). Two runs writing the same output at once both reported completed while one of them described the other's file: run() now holds a lock file (.<name>.ffskill-lock, pid inside) next to the output and the second run is refused as kind: input; a lock whose pid is dead or older than an hour is taken over.
• Odd source dimensions (641x359 screen captures, 4:4:4 masters) failed 15 tools with "width not divisible by 2": run() retries the encode with an even-dimension scale in front of the filter chain; a -filter_complex graph that cannot take it is refused as kind: input with the fix named.
• cut.py's re-encode path and pad.py --start stream-copied a subtitle track whose cues then fired early (cut's container grew to 2 s for a 1 s cut): both drop it and report dropped_non_av_streams, as fit/freeze already did. cut.py counts a keyframe snap of exactly the tolerance as outside it.
• render.py --dry-run planned ten commands for a clip whose source does not exist; the source is checked first. render.py and report.py answered an unwritable output directory with a traceback; an unwritable directory is now refused as kind: input by every writing tool before ffmpeg runs. verify.py --json printed two JSON documents for a non-media input.
• color.py --correct / --lut on an HDR source tagged PQ/HLG pixels as BT.709 without a tone map: refused as kind: input naming --to-sdr (--force grades the raw values anyway). redact.py --mode blur failed on regions under 40 px with the default radius (clamped, chroma planes get their own). loudness.py --measure-only --json prints the contract's document shape.
• Sweep P3s: export.py's HDR warning is in the JSON (notes); graphics.py refuses a frame under 64 px instead of building a 0-height bar; insert.py refuses a video where it wants a still; look.py builds a sheet from a one-frame clip instead of printing "wrote" and then failing; batch.py --dry-run leaves no directories behind and render.py removes its auto-named work directory on every exit path.
• fix: boundary sweep -- output lock, even-dimension retry, subtitle drops in cut/pad, unwritable dirs, dry-run source check, verify single JSON, redact radius, HDR refusal in color, and the P3s (#190)

What's Changed

• fix: boundary sweep (561 runs) -- output lock, even-dimension retry, subtitle drops, unwritable dirs, dry-run checks, and the P3s by @claude[bot] in #190

Full Changelog: v1.4.13...v1.4.14