Conciseness

The body is dense and assumes Claude's competence (no explanations of plugins, npx, or hooks basics), but the warning not to map Claude hook profiles onto other harnesses is stated three times ('Do not offer Claude scopes or map ECC's four Claude hook profiles onto Codex', 'do not ask the Claude four-profile hook question', 'Never claim that Claude's off | minimal | standard | strict profiles were applied to Codex') and the version-string guardrails near-duplicate each other. This matches 'efficient; minor instances... that could be trimmed' rather than 'every token earns its place'.

Actionability

Every step has copy-paste-ready commands with enumerated placeholder values ('user | project | local', 'off | minimal | standard | strict'), explicit fallbacks when $CLAUDE_PLUGIN_ROOT is unavailable, exact Codex commands and an exact argument array, and full Kimi commands. Fully executable with the common cases covered, matching the top anchor rather than the 'minor gaps' anchor at 4.

Workflow Clarity

Clear numbered sequence (inventory → collect exactly two choices → preview/confirm once → apply → verify) with explicit validation gates: 'Require a zero exit status and a setup result whose scope and hooks equal the selected values', an independent re-run of 'claude plugin list --json', 'Continue only when exactly one enabled ecc@ecc entry exists at the selected scope', and stop-and-report recovery for ambiguous states. Validation and error-recovery are explicit, so the destructive-operation cap does not apply.

Progressive Disclosure

No bundle files exist, so everything is inline in one well-sectioned SKILL.md with a clear harness-routing header structure and coherent sections — good structure with easy navigation. However, the ~110-line Claude Code section (and the Codex/Kimi sections) could be split into one-level-deep per-harness reference files with routing kept in the overview, which is why this is 'minor organization gaps' rather than the 'content appropriately split' top anchor. It is clearly above the 'content that should be separate is inline' with weak structure described at 3.

Specificity

Names multiple concrete actions — 'inventory the install, collect scope (user/project/local) and hook mode (off/minimal/standard/strict)... then preview, apply, and verify' — plus distinct per-harness behaviors (Claude Code wizard, Codex native plugin lifecycle, Kimi project surface under ./.kimi-code). Coverage is comprehensive with no gaps, matching the top anchor rather than the 'minor gaps' anchor at 4.

Completeness

Explicitly answers 'what' (run the wizard: inventory, collect scope and hook mode, preview, apply, verify) with an explicit 'Use when...' clause listing concrete triggers. Both halves are fully explicit, matching the top anchor; anchor 4 requires a 'when' that is only partially explicit.

Trigger Term Quality

'Use when installing, updating, reconfiguring, or repairing an ECC installation, changing hook profiles, or moving ECC between install scopes' covers the natural phrases a user would say for this domain (set up, update, fix, change hooks, move scope). No file extensions apply to this task type, and no natural trigger phrasing is missing, so it fits the comprehensive anchor rather than the 'a few natural terms missing' anchor at 4.

Distinctiveness Conflict Risk

Triggers are ECC-specific ('ECC installation', 'hook profiles', 'install scopes'), defining a clear niche with minimal conflict risk against generic setup or plugin-management skills.