The body is short and free of concept explanations, but generic process bullets ("Clarify goals, constraints, and required inputs", "Apply relevant best practices and validate outcomes", "Provide actionable steps and verification") and a boilerplate "Do not use this skill when" section are filler that could be tightened; it is mostly efficient but not fully lean, so it is at 2 rather than 3.

There is no executable code, commands, or concrete examples in the body; the guidance is largely abstract ("apply relevant best practices", "validate outcomes") with only one specific rule ("avoid inferred assignment and declare variables, constants, parameters, and return types explicitly"), and the playbook it defers to for examples does not exist. It describes rather than instructs, matching the score-1 anchor.

A loose sequence is present (clarify goals -> apply best practices and validate outcomes -> provide actionable steps and verification), but validation is only mentioned generically with no concrete checkpoints or feedback loops; it is not the level below because steps are listed, and not the level above because checkpoints are implicit rather than explicit.

The body is well-organized into clear sections and signals a one-level-deep reference in a dedicated "## Resources" block, but the referenced file `resources/implementation-playbook.md` does not exist in the bundle, leaving a broken navigation pointer; it is not the level above because the progressive disclosure is undermined by the missing reference.

The description names specific pattern domains ("signals, scenes, state machines, and optimization") but the sole verb is abstract ("Master...patterns") rather than concrete actions like the anchor's "extract/fill/merge"; it names domain and some actions but is not comprehensive on concrete actions, so it sits at 2 rather than 3.

It explicitly answers both what ("Master Godot 4 GDScript patterns including signals, scenes, state machines, and optimization") and when ("Use when building Godot games, implementing game systems, or learning GDScript best practices") with an explicit "Use when..." trigger, matching the anchor for both what AND when.

"Use when building Godot games, implementing game systems, or learning GDScript best practices" provides natural phrasings a user would actually say, with good coverage; it is not the level below because it offers multiple common user expressions rather than sparse keywords.

Godot 4 and GDScript form a clear, narrowly-scoped niche with distinct triggers unlikely to fire for unrelated skills; it is not the level below because the domain and triggers are specific rather than broadly overlapping.