Conciseness

Every section earns its place — a terse input rule ('ask for 2-5 concrete issues'), path lists, and a six-step workflow with no explanations of concepts Claude already knows — matching the anchor-5 'lean and efficient' example; anchor 4 would require over-explanation worth trimming, and none is present.

Actionability

Concrete guidance throughout — specific paths (`.codex/`, `.agents/`, `AGENTS.md`), a root-cause taxonomy, three explicit validation checks, and a copy-paste report template — matching anchor 4's 'minor gaps'. Not 5 because validation is stated as an outcome ('TOML/JSON/YAML/frontmatter parses') without any executable command to perform it.

Workflow Clarity

The six-step sequence includes an explicit validation step with three concrete checkpoints ('parses', 'Referenced scripts or skills exist', 'No Claude-only assumptions remain'), satisfying anchor 4. Not 5 because no error-recovery feedback loop states what to do when validation fails; not 3 because checkpoints are present and explicit, not merely implied.

Progressive Disclosure

This is a ~50-line single-purpose skill with no bundle files (no references/, scripts/, or assets/ exist) and well-organized Input/Scope/Workflow sections where nothing belongs in a separate file, earning 5 under the simple-skill exception; anchor 4 would require organization gaps or misplaced content, which are absent.

Specificity

Names the domain ('agent harness configuration') with an action basis ('based on recent friction points') and cleanup targets, matching anchor 3's 'domain and 1-2 concrete actions'. Not 4 because the only verbs are generic ('Improve', 'cleanup') with no list of several specific actions; not 2 because it goes beyond bare domain naming by scoping the input and targets.

Completeness

Explicitly answers both: 'Improve agent harness configuration based on recent friction points' (what) and 'Use when invoked as `$retro` or when the user asks for autonomous cleanup of Codex, agent harness, or migrated Claude configuration' (when) with concrete trigger phrases — the exact anchor-5 pattern. Anchor 4 would require the 'when' to be less explicit or specific than it is.

Trigger Term Quality

Includes multiple natural trigger terms ('$retro', 'autonomous cleanup', 'Codex', 'agent harness', 'migrated Claude configuration'), matching anchor 4's good coverage. Not 5 because it lacks synonyms or variations users might naturally say (e.g., 'retrospective', 'fix my config', 'post-session review'); not 3 because coverage spans several distinct phrasings rather than a single generic keyword.

Distinctiveness Conflict Risk

Occupies a clear niche (harness-config retrospective scoped to Codex/agent harness/migrated Claude configuration) with distinct triggers ($retro invocation, named tools), giving minimal conflict risk per anchor 5. Not 4 because no closely related skill would plausibly claim these specific triggers.