Conciseness

Dense, information-rich body that assumes Claude's competence (no explaining what hooks/skills/agents are) and earns most of its tokens; minor redundancy between the v0.6 intro paragraph and the Current Rules section keeps it just below the lean anchor 5.

Actionability

Highly actionable for an instruction-only skill: concrete CLI commands ('trellis channel spawn --agent <name>', 'trellis mem list | search | context | extract | projects', 'task.py create --parent <slug>', 'trellis workflow --template <id>'), exact file paths, and specific config keys (hooks.after_create, channel.worker_guard.idle_timeout, codex.dispatch_mode) cover the common cases.

Workflow Clarity

The 'How To Use' section gives a clear 5-step sequenced navigation procedure with a verification checkpoint ('read the actual files... treat local content as authoritative'), and the Do Not section adds validation (check .template-hashes.json, cross-check trellis --help); no explicit validate->fix->retry feedback loop, so it sits at 4 rather than 5.

Progressive Disclosure

SKILL.md is a clear overview pointing to well-signaled, one-level-deep references organized into three labeled categories (Local Architecture, Platform Files, Local Customization), each file described and verified present; navigation is easy and content is appropriately split.

Specificity

Names the domain ('local Trellis architecture') and concrete actions ('Understand and customize') applied to many specific surfaces (.trellis, platform hooks, settings, agents, skills, commands, prompts, workflows, channel runtime, bundled agents, workflow templates, spec refresh, cross-session memory, bundled skills); only two action verbs keeps it just below the comprehensive multi-action anchor 5.

Completeness

Explicitly answers both 'what' ('Understand and customize the local Trellis architecture inside a user project') and 'when' ('Use when modifying .trellis plus platform hooks, settings, agents, skills, commands, prompts, workflows...') with concrete trigger phrases.

Trigger Term Quality

The 'Use when modifying...' clause covers natural terms (hooks, settings, agents, skills, commands, prompts, workflows) plus tool names (trellis channel, trellis mem, trellis init); good coverage, though heavy on jargon like 'registry-backed spec refresh' and 'bundled-skill auto-dispatch flow' that users would rarely say verbatim.

Distinctiveness Conflict Risk

Occupies a clear Trellis-only niche with distinct triggers (.trellis, trellis channel, trellis mem, bundled skills) and minimal conflict risk with unrelated skills.