Conciseness

The ~45-line body is lean with no concept padding and no over-explanation; every section (settings, steps, example) earns its place, matching the score-5 'lean and efficient' anchor.

Actionability

Concrete operational guidance is given — 'Phase mask: 0 → 1 → 2 → 4 → 5 → 6', 'First move (phase 4): write new failing tests', the two gates — but it delegates the executable mechanics to the orch-pipeline engine rather than providing copy-paste commands, so it is mostly rather than fully executable.

Workflow Clarity

The numbered 'How It Works' sequence is clear and pairs with explicit validation checkpoints — 'Stop at Gate 1 (plan approval) and Gate 2 (pre-commit)' — and the example reinforces the gate flow, matching the score-5 anchor.

Progressive Disclosure

Under 50 lines with well-organized sections and a single, clearly signaled one-level reference to orch-pipeline ('Thin wrapper over the shared engine in orch-pipeline'); the simple-skill exception applies and structure is clean.

Specificity

Lists multiple concrete actions — 'research, plan, TDD implementation, review, and gated commit' — with comprehensive coverage of the orchestration phases, matching the score-5 anchor.

Completeness

Explicitly answers both what ('Orchestrate building a brand-new feature end to end ... by delegating each phase to the matching ECC agent') and when ('Use when adding a capability that does not exist yet'), matching the score-5 anchor.

Trigger Term Quality

'Use when adding a capability that does not exist yet' is a natural trigger, but it offers only one phrasing and omits common synonyms (build, implement, support) that users would equally say, fitting the score-3 anchor.

Distinctiveness Conflict Risk

'Brand-new feature' / 'capability that does not exist yet' carves a clear niche, but the description does not explicitly disambiguate from sibling orchestrators (orch-fix-defect, orch-change-feature), so it sits at 4 rather than 5.