Conciseness

The ~780-line body carries substantial padding Claude does not need — an 扩展计划 product roadmap, 质量保证 assurances, generic disclaimers, full mock output transcripts — and explains concepts Claude already knows (Levenshtein fuzzy matching, proportional scaling written as "(value_per_100g * portion_grams) / 100"). It stays above anchor 1 because the data schema, nutrient thresholds, and RDA values are genuine domain knowledge.

Actionability

Concrete artifacts exist (complete food JSON schema, threshold definitions like 高蛋白 ≥15g/100g, example commands such as "/nutrition food 三文鱼"), but all logic is pseudocode with unbound names (database, extract_food_name, normalize_food_name) and the cited data files (data/food-database.json, data/food-categories.json) are absent from the bundle, so nothing is end-to-end executable — matching the anchor-3 pseudocode profile rather than anchor 4's executable guidance.

Workflow Clarity

Sequences are listed (查询流程 steps 1–4; 记录早餐 steps 1–5) but validation checkpoints and error-recovery flows are missing — e.g. no guidance on what to do when find_food returns None or when a portion cannot be parsed. Anchor 3 ("steps listed but validation gaps; checkpoints missing or implicit") fits; anchor 4 is unwarranted since checkpoints are absent entirely, not merely minor.

Progressive Disclosure

The body is well-sectioned but is a ~780-line monolith inlining content that clearly belongs in reference files (full RDA tables, the complete food data structure, the category tree), and its references (data/food-database.json, data/food-categories.json, .claude/commands/nutrition.md) point to files that do not exist in the bundle. Structure is good, keeping it above anchor 2's "minimal structure", but heavy inlining plus dangling references hold it to anchor 3.

Specificity

The description is just the title "Food Database Query" — it names the food-database domain but contains no action verbs or capability statements, sitting below the anchor-2 example "Processes PDF files" (which at least states an action) while remaining more domain-specific than the purely generic anchor-1 example.

Completeness

The 'what' is only a vague title (no stated capabilities such as querying, comparing, or recommending) and the 'when' is entirely absent — matching anchor 2 exactly ("vague 'what' and no 'when'"); it cannot reach 3 because the what is never clearly stated.

Trigger Term Quality

Only "food" is a natural user term; users would say "nutrition", "calories", "protein", "营养", or "卡路里", none of which appear, and "database query" is technical phrasing rather than a phrase a user would naturally utter.

Distinctiveness Conflict Risk

The food-nutrition niche is somewhat specific, but a bare title with no trigger guidance would easily overlap with any general nutrition-tracking or diet-logging skill, matching anchor 3 rather than 4 which requires distinct triggers.