v1.10.1

Automated release: version and notes generated from pull requests merged since 1.10.0.

Fixed

• render.py now refuses an unrecognised key in a project — top level or in any stage/clip object — naming the object, the key and the nearest valid key, instead of silently ignoring it (a clip start/end typo rendered the clip untrimmed; a stage typo dropped the stage, both reported as success).
• write_plan() and the at-exit plan hook use the Context emit()/die() were given: emit(ctx=…) no longer writes an empty plan, and die(ctx=…) no longer leaves a plan behind for a failed run.
• The nine tools that declared --crf without a help string now show the (deprecated: use --quality) mark in --help (and in their MCP crf description).
• The --crf deprecation warning fires for the abbreviations argparse accepts (--cr, --c) as well, and batch.py no longer swallows a recipe step's warning; export.py stays exempt.
• A non-numeric time says 'zz': not a time instead of leaking the interpreter's could not convert string to float.
• docs/contract.md: tools/list under FFMPEG_SKILL_MCP_LEAN is stable in tool and argument names and required lists — what the frozen snapshot pins — not byte-identical (descriptions may change).
• SKILL.md: the time-grammar sentence is scoped to the timestamp flags (--start/--end/--at/--from/--duration/--offset and cue/chapter files); doctor's tool list is doctor --json's tools.
• references/scripts.md notes the --crf deprecation and FFMPEG_SKILL_NO_OVERWRITE; README marks proxy.py --crf as the deprecated alias.
• fix: render.py refuses unknown project keys, ctx= reaches write_plan and the exit hook, --crf mark on every tool with --quality, time refusals say not a time (#211)
• docs: eval iteration 10 at 1.10.0, README catches up with 1.8-1.10, PR checklist names the README (#210)

What's Changed

• docs: eval iteration 10 at 1.10.0 (108 runs, focused independent grader, trigger set, corpus report) by @claude[bot] in #210
• fix: audit-9 follow-ups on 1.10.0 (render.py unknown keys, ctx= in write_plan/exit hook, --crf mark on every tool, time refusals) by @claude[bot] in #211

Full Changelog: v1.10.0...v1.10.1