Conciseness

The body is dense and operational with no explanations of concepts Claude already knows, but the 'Script red lines' section duplicates step 2's prohibitions nearly verbatim ('Never write inline Python, a temporary extraction script, or a replacement script' vs 'Do not write or execute inline Python as a substitute for either bundled script. Do not create extract_pdf.py, parse_paper.py...'). That minor trimmable duplication fits the 4 anchor; it is not 5, and far above the padding seen in the 2-3 anchors.

Actionability

Provides copy-paste-ready invocations for both bundled scripts with explicit path resolution ('Resolve SKILL_DIR as the directory containing this loaded SKILL.md... Run exactly the bundled script by its resolved path'), argument templates, the --render-dir variant, and per-mode auditor commands covering the common cases. Fully executable guidance, matching the 5 anchor; the 4 anchor's 'minor gaps' do not apply.

Workflow Clarity

A six-step sequenced protocol with explicit validation checkpoints ('Inspect the script exit code and the bundle validation block before drafting', 'Treat audit errors as blockers'), feedback loops for error recovery ('If preparation fails, record the failure... Then enter the strongest supported fallback mode'; 'If the auditor itself cannot run, state that failure and manually apply only its documented checks'), and a nine-item pre-delivery checklist. This matches the 5 anchor including validation and error recovery.

Progressive Disclosure

Scored against the actual bundle: the three references/ files and two scripts/ files exist, are one level deep, and are clearly signaled with load timing ('Read [references/card-schema.md] when drafting the final Markdown'). However, the mandatory entry point is dead — 'Read [manifest.yaml](manifest.yaml), then read every file under always_load' plus 'static/core/' and 'static/fragments/paper_type/' do not exist in the bundle, so the disclosure chain breaks at step 1 and the core content is unreachable. This navigation failure is worse than the 3 anchor's 'not clearly signaled' references, though the well-signaled surviving references keep it above the monolithic/no-structure level of 1.

Specificity

Names the concrete output artifact ('structured deep-reading Paper Card for one scientific paper') plus four specific analysis objects ('methods, experiment-to-claim evidence, limitations, and research ideas'), matching the 'several specific actions with minor gaps' anchor. It falls short of 5 because these are analysis topics rather than a comprehensive list of concrete operations (e.g., figure/table analysis or grounding checks are unmentioned).

Completeness

Both 'what' (build/analyse a Paper Card with listed components) and an explicit 'Use for 论文精读卡、方法拆解、证据链分析' trigger clause are present, so it clears the 3-cap for missing triggers. It is not 5 because the 'when' relies solely on Chinese genre terms and negative boundaries ('not full-paper bilingual translation or formal peer review'), leaving English-trigger usage only implied.

Trigger Term Quality

Natural phrases a target user would say are present ('Paper Card', 'deep-reading', and the Chinese 论文精读卡、方法拆解、证据链分析), giving good keyword coverage per the 4 anchor. It is not 5 because common English variations ('paper summary', 'close reading', 'paper notes') and the shorter 精读 are missing.

Distinctiveness Conflict Risk

The distinctive 精读卡 genre term plus explicit exclusions ('not full-paper bilingual translation or formal peer review') make it mostly distinct with minor overlap risk, fitting the 4 anchor. It is not 5 because a generic request like 'read/summarize this paper' in English could still pull in adjacent paper-reading skills.