Conciseness

The body is lean — copy-paste git commands and short pattern examples with no concept explanations Claude already knows. It falls short of anchor 5 only through minor repetition: the policy pointer "`AGENTS.md` -> `Build Flow` -> ..." appears twice (Overview and Decision Rules), and the `git diff -U0 -- '*.go'` commands are restated twice in the Decision Rules section, which could be trimmed to a single reference.

Actionability

Everything is executable: a copy-paste-ready bash block of git inspection commands, concrete diff patterns to match ('+func TestXxx(t *testing.T) {' and added/removed import lines), and an explicit decision outcome ("If any condition matches, run `make bazel_prepare`" / "continue without ... and report the evidence"). This matches anchor 5 — fully executable guidance covering the common cases.

Workflow Clarity

The sequence is clear — inspect local changes, compare against decision rules, then run or skip with evidence reporting — and the decision checkpoint is explicit. It does not reach anchor 5 because the full set of trigger conditions is delegated to an external location ("`AGENTS.md` -> `Build Flow` -> 'When make bazel_prepare is required'") rather than stated or summarized inline, leaving a minor validation gap if that section is unavailable or changed.

Progressive Disclosure

This is a short (under 50-line) single-purpose skill with no bundle files (no references/, scripts/, or assets/ directories exist) and no content that belongs in separate files. Per the simple-skill guideline, well-organized sections (Overview, Inspect Local Changes, Decision Rules) are sufficient for anchor 5.

Specificity

The description names a concrete, single-purpose action — "deciding whether make bazel_prepare is required before build or test commands based on local file changes in TiDB" — with a specific make target, context (build/test), and input basis (local file changes). It stays above the anchor-3 example ('Names domain and 1-2 concrete actions, but not comprehensive') because the one action named is precisely scoped rather than generic, but it does not list multiple distinct actions, so it falls short of anchor 5.

Completeness

Both parts are explicitly present: what ("deciding whether make bazel_prepare is required") and when ("before build or test commands based on local file changes in TiDB"). It does not reach anchor 5 because the when-clause, while reasonably concrete, does not state the concrete trigger phrases users would say (e.g. new test functions or import changes), and the consequence of the decision is left implicit — matching anchor 4 ('when' could be more explicit or specific).

Trigger Term Quality

Natural trigger phrases a TiDB developer would actually say are present: "make bazel_prepare", "build or test commands", "local file changes", "TiDB". Coverage is good but misses common variations a user might mention, such as 'go test', 'compile', '_test.go', or 'imports', which appear only in the body — so it matches anchor 4 ('Good keyword coverage; a few natural terms missing') rather than 5.

Distinctiveness Conflict Risk

It occupies a clear niche — the TiDB-specific `make bazel_prepare` build gate — with triggers tied to a named make target and repository, making it highly unlikely to fire for any other skill. This matches anchor 5 ('Clear niche with distinct triggers; minimal conflict risk').