The body is lean and assumes competence: it gives the exact CLI command, file-path format, and output schema without explaining what perception logs are or how the system works. Even the philosophical prose ("宁可少写、写准，也不要流水账") earns its place by shaping output decisions, matching 'lean and efficient; every token earns its place' rather than the padded score-2 example.

It provides a concrete executable command (`miloco-cli perceive logs --jsonl`), an exact target path pattern (`memory/<YYYY-MM-DD>-miloco-perception.md`), a precise per-line output format, and worked examples — fully executable and copy-paste ready, matching the score-3 anchor.

Steps 1–4 are clearly sequenced with an explicit validation checkpoint (step 2: '若返回 No logs found 或命令失败 → 直接结束，不写入') and concrete create-vs-append branching plus dedup/format guards. Although there is no post-write verify loop, the append operation is non-destructive and the early-exit guard plus format checklist satisfy 'clear sequence with explicit validation steps'; it is not the score-2 case of missing checkpoints.

The skill is under 50 lines with no external references needed, and the body is organized into clearly labeled sections (执行步骤, 记录原则, 输出格式). Per the guideline, a simple sub-50-line skill with no need for external references scores 3 with just well-organized sections; no bundle files exist to verify.

The description names a concrete domain ("miloco-perception-digest 定时任务") and characterizes the skill as an "内部步骤" (internal step), but it lists no concrete actions at all — it never states what the step actually does (compressing perception logs into a daily memory). This matches the 'names domain and some actions, but not comprehensive' anchor and falls short of score 3's 'multiple specific concrete actions'.

It answers 'when' explicitly via "仅由该任务调用" (only invoked by that task), but it does not answer 'what' — the action performed is never stated. Per the guideline a missing 'what' weakens completeness, so this caps at 2 rather than the explicit what+what-when of score 3, but is above score 1 because the trigger guidance is explicit rather than absent.

The single trigger term is the task name "miloco-perception-digest" plus "定时任务" (cron task); it is the relevant keyword for this internal skill but offers no common variations or natural phrasings, matching 'some relevant keywords but missing common variations' rather than the broad coverage of score 3.

The skill is tied to a single uniquely-named internal cron task ("miloco-perception-digest") with an explicit single-caller constraint, giving it a clear niche that is very unlikely to trigger for the wrong skill — matching the 'clear niche with distinct triggers; unlikely to conflict' anchor.