Conciseness

The body is dense and lean — it assumes competence (no explanation of what HTML, GSAP, or ffmpeg are) and every section carries operational constraints. It misses level 5 because it embeds time-sensitive version pins ("hyperframes 0.8.50、gsap 3.14.2", "Node ≥22") outside any old-patterns/deprecated section, and the final environment paragraph is a run-on that could be tightened.

Actionability

All five subcommands are given as copy-paste-ready invocations with flags (check-setup, scaffold, check, preview, render), alongside a complete spec JSON example, exit-code semantics (0/1/2), a 20-minute timeout, and precise numeric constraints (3–30s durations, ≤32-char titles, ≤4 points of ≤48 chars, workers 1–24, width/height even ≥360, fps 1–60). This matches the level-5 anchor: fully executable commands covering the common cases.

Workflow Clarity

The commands are listed in canonical pipeline order (check-setup → scaffold → check → preview → render) with explicit validation at every stage: check gates before preview and render ("preview 先 check", "render 每次先 check"), errors block while warnings require human review, GATE B approval before render, exit-code handling, and --force/--validation guards on overwriting outputs ("临时输出通过校验才替换"). This matches level 5: clear sequence with explicit validation and feedback loops.

Progressive Disclosure

The body is well sectioned and appropriately defers the overall process to workflows/deck-talk.md, but scored against the actual bundle it has real navigation gaps: it directs installation through `scripts/install-deck-render.sh`, which does not exist in the bundle (scripts/ contains only deck-render.py and font_policy.py), and the bundled font_policy.py is never referenced or discoverable from the body. Not 4 because a broken in-bundle reference plus an orphaned bundle file are more than 'minor organization gaps'; not 2 because the structure and content split are otherwise good.

Specificity

The description names the domain ("幻灯讲解视频的本地 HTML 确定性渲染工具") and lists five concrete pipeline actions ("环境检查、逐页脚手架、质量检查、静帧联系表、MP4 渲染"), comprehensively covering the tool's command set. It exceeds the level-4 anchor ('several specific actions; minor gaps') because the action list maps to every stage of the workflow with no coverage gaps.

Completeness

The 'what' is clear and concrete (deterministic local HTML rendering with five named actions), but there is no 'Use when...' clause or equivalent explicit trigger guidance — the 'when' is only weakly implied by the domain noun. Per the judging guideline, a missing 'Use when' clause caps completeness at 3; it is not 4 because the 'when' is never made explicit.

Trigger Term Quality

Natural keywords a user would say are present: "幻灯" (slides), "讲解视频" (narrated video), "HTML", "渲染", "MP4". It falls short of the level-5 anchor because common variations and file extensions are missing (e.g. "PPT", "演示文稿", "slideshow", ".mp4"), but coverage is good rather than merely 'some relevant keywords' (level 3).

Distinctiveness Conflict Risk

The niche is well defined — deterministic HTML-to-MP4 slide-video rendering with contact sheets — and distinct from document/presentation-authoring skills. It is not 5 because the leading term "幻灯" could plausibly fire for generic slide/presentation tasks (e.g. .pptx creation or editing skills), creating minor overlap risk with closely related skills.