Conciseness

The ~35-line body is lean and directive throughout: every rule is a one-line instruction, no Flutter basics are re-explained, and APIs like LayoutBuilder and MediaQuery are named without definition. This matches the 5 anchor's "every token earns its place"; the 4 anchor's "minor instances of over-explanation" do not apply.

Actionability

Guidance is concrete for an instruction-only skill: exact APIs (LayoutBuilder, MediaQuery, IntrinsicHeight), a specific diagnostic procedure ("Read the first meaningful constraint or overflow failure and identify which widget imposed the incompatible size"), and a concrete verification matrix ("boundary widths just below and above each breakpoint, long localized strings, large text, landscape"). It stops short of the 5 anchor because the body has no worked code example of the core pattern — the executable harness code lives only in the reference file.

Workflow Clarity

The Diagnose → Rules → Verification sequence is coherent and verification is explicit, including a checkpoint for the silent-failure case ("inspect the geometry and hit-test behavior ... instead of assuming that a clean console proves the layout is usable"). It matches the 4 anchor's "clear sequence with most checkpoints present" but lacks the explicit fix→re-verify feedback loop of the 5 anchor.

Progressive Disclosure

The body is a lean overview and both references are conditionally triggered, clearly signaled ("When components overlap, become clipped, or cover an action, follow the geometry, viewport, and fixture testing reference"; "When adaptive navigation is in scope..."), and verified to exist as real files one level deep with no nested skill references. This matches the 5 anchor's "clear overview with well-signaled one-level-deep references; content appropriately split".

Specificity

"Build or repair adaptive Flutter layouts" names two concrete actions and the enumeration "devices, constraints, breakpoints, overlap, clipping, orientation, and input modes" covers the domain comprehensively. It falls short of the 5 anchor's "multiple specific concrete actions" since only two verbs (build, repair) are given, but exceeds the 3 anchor's "not comprehensive" scope.

Completeness

The "what" is clear and concrete, and a "when" clause exists with concrete trigger phrases ("when text scaling causes reflow, clipping, or disappearing controls"), but that trigger is scoped to coordinating with flutter-accessibility rather than stating when to use this skill generally. This is stronger than the 3 anchor's weakly-implied "when" but not the fully explicit what-and-when of the 5 anchor.

Trigger Term Quality

Natural terms like "adaptive Flutter layouts", "breakpoints", "clipping", "text scaling", and "orientation" are present, matching good coverage. However "responsive" and "overflow" — the two most common words users say for this problem — are absent, so it does not reach the 5 anchor's comprehensive synonym coverage.

Distinctiveness Conflict Risk

The description carves a clear niche (adaptive Flutter layout work) and actively manages overlap: it explicitly excludes "general widget state architecture" and scopes the flutter-accessibility intersection to text-scaling symptoms. This matches the 5 anchor's "clear niche with distinct triggers; minimal conflict risk".