Conciseness

The body is lean — copy-paste bash blocks with almost no concept explanation and no padding ('Use env -i for the cleanest smoke. This strips host OPENCODE_*...') earns its tokens by explaining a non-obvious isolation rationale. It misses anchor 5 because it embeds a time-sensitive version-specific example ('For the OpenCode 1.17.11 malformed-message crash, use:') inline rather than in a dedicated section, which the guidelines penalize.

Actionability

Every step is fully executable: complete bash for packing, tarball install with a version verification one-liner, a heredoc config, env -i invocations, the run command with timeout, and a concrete rg pattern for the crash-signature search, plus an expected output ('OK') and a fill-in reporting template. Nothing is pseudocode or hand-waved.

Workflow Clarity

The 'Core Workflow' numbers steps 1-8 in execution order, and explicit validation checkpoints are woven throughout: verify 'plugin_origins has exactly one entry', confirm the model, check the expected 'OK' result, and 'No matches should appear' for the signature search. Conditional recovery paths are also handled ('If OpenCode needs provider aliases from the host environment, run a second non-isolated... smoke and clearly label it').

Progressive Disclosure

Sections are well organized (Core Workflow, Pack Candidate, Isolated Config, Runtime Smoke, Host-Provider Smoke, Reporting Template) with no nested references and no orphaned pointers — the bundle has no external files and the body references none. It is not anchor 5 because at ~150 lines the version-specific signature detail and the host-provider variant are candidates for a one-level-deep reference file rather than staying fully inline.

Specificity

The description names a concrete action ('Test an oh-my-opencode-slim release candidate or bugfix before publishing') and enumerates several specific validation targets ('packed plugin artifact, release branch, crash fix, OpenCode runtime compatibility, or model-specific smoke test'). It stops short of anchor 5 because the 'what' is essentially a single test/validate action applied to multiple objects rather than multiple distinct concrete actions.

Completeness

Both halves are explicit: the 'what' ('Test an oh-my-opencode-slim release candidate or bugfix before publishing') and the 'when' ('Use when validating a packed plugin artifact, release branch, crash fix, OpenCode runtime compatibility, or model-specific smoke test'). Anchor 4 would require the 'when' to be less explicit, but here it is a full clause with concrete trigger scenarios.

Trigger Term Quality

Natural trigger phrases are present: 'release candidate', 'crash fix', 'release branch', 'smoke test', 'before publishing' — the words a maintainer would actually say. Not anchor 5 because terms like 'tarball', 'pre-publish check', or plugin-publishing synonyms are missing and 'packed plugin artifact' leans jargon-adjacent.

Distinctiveness Conflict Risk

The description is anchored to a named, narrow niche (oh-my-opencode-slim release validation) with distinct triggers (packed artifact, release branch, crash fix, OpenCode version-specific regression). It would not plausibly fire for any other skill, matching the clear-niche anchor.