Conciseness

Nearly all content is project-specific and non-obvious (anstream-vs-std macro semantics, guard-test exemptions, directive-file mechanics), so it avoids explaining things Claude already knows — but it is noticeably padded: multi-paragraph narrative detours (the Cmd::delayed_stream progress line, the picker LinkStyle::Unlinked exposition, MSYS2 path conversion), repeated restatements of the answer-vs-narration principle, and GOOD/BAD example density that could be halved. This fits anchor 3 ("mostly efficient but includes some unnecessary explanation or could be tightened") better than 4 given the volume of trimmable prose.

Actionability

Guidance is fully executable throughout: copy-paste Rust snippets ("use worktrunk::styling::{eprintln, println, stderr};"), exact function signatures and symbol/color tables, the cformat! tag list, concrete GOOD/BAD message contrasts, and named test helpers ("setup_snapshot_settings()", "make_snapshot_cmd()", "assert_cmd_snapshot!()"). Specific examples cover the common cases, matching anchor 5.

Workflow Clarity

As a standards reference rather than a sequential process, it still supplies explicit decision procedures — the answer-vs-narration discriminating question, the warning-placement tree ("Is it unexpected? …"), the prompts-vs-hints --yes table, and the four-part error message structure — with verification anchored in snapshot tests and guard tests. It falls short of anchor 5 because there is no consolidated end-to-end workflow with checkpoints; a reader adding a new message type must synthesize rules scattered across many sections.

Progressive Disclosure

No bundle files exist (no references/, scripts/, or assets/), so all 1,141 lines are inlined in SKILL.md. Sections such as Hyperlinks, Windows Compatibility, Documentation Examples, and Table Column Alignment clearly belong in separate reference files, squarely matching anchor 2's "content that clearly belongs in separate files is inlined". Internal ## headers do make it navigable (above the header-less anchor-2 example), but it cannot reach anchor 3, which requires references to be present at all.

Specificity

"Documents ANSI color nesting rules, message patterns, and output system architecture" names three concrete content areas, and the trigger surface is enumerated with specific symbols ("warning_message, hint_message, error_message, info_message, eprintln, or println", "CLI help, progress UI, snapshot text"). Several specific actions with minor gaps — styling helpers, pager, and path-formatting capabilities are not named — so it fits anchor 4 rather than the comprehensive coverage of anchor 5.

Completeness

Both halves are explicit: what ("CLI output formatting standards for worktrunk. Documents ANSI color nesting rules, message patterns, and output system architecture") and when with concrete trigger phrases ("Load before editing any code that calls warning_message, hint_message, error_message, info_message, eprintln, or println, or that produces strings the user will see"). This matches the anchor-5 pattern of clearly and explicitly answering both what AND when.

Trigger Term Quality

The exact function and macro names an editor would encounter in code ("warning_message, hint_message, error_message, info_message, eprintln, or println") plus "CLI help, progress UI, snapshot text" and the catch-all "any code that produces strings the user will see" give good natural-term coverage. A few natural terms from the body are missing (success_message, progress_message, prompt_message, "styling", stdout/stderr), which keeps it at anchor 4 rather than the synonym-level completeness of anchor 5.

Distinctiveness Conflict Risk

The description is scoped to a single named codebase ("for worktrunk") and triggers on codebase-specific function names, giving it a clear niche with minimal conflict risk against any generic formatting or CLI skill. It matches anchor 5's clear-niche pattern.