Conciseness

Every line carries repo-specific information — the full file map, the requestId/operationId split, cancellation semantics, the ".run() not .execute()" gotcha, and trace redaction rules — with zero general-knowledge padding. It assumes Claude's competence and matches the "every token earns its place" anchor.

Actionability

Concrete paths for every layer of the chain, exact copy-paste commands (pnpm nx test electron-backend, pnpm nx run electron-backend:build-worker, stat dist/apps/electron-backend/workers/database.worker.js), and named env vars with their redaction constraints make the guidance fully executable.

Workflow Clarity

"Rebuild and Verify" gives a clear sequence with explicit validation checkpoints (tests, build, stat artifact, confirm timestamp, restart, E2E), so the destructive/batch-operation cap does not bind. It falls short of anchor 5 only because there is no explicit error-recovery feedback loop (e.g., what to do when the artifact timestamp is stale or an E2E fails).

Progressive Disclosure

The single-file body is well-sectioned with nothing inlined that belongs in a separate file, and the only deeper pointer (docs/architecture/sqlite-db-worker.md) is one level deep. The canonical-guide pointer is buried in the ownership path list rather than clearly signaled as a "see X for Y" reference, which keeps it at anchor 4 rather than 5.

Specificity

"Electron SQLite IPC", "database-worker operations", "request-scoped progress or cancellation", "worker packaging", and "runtime verification" name several concrete capability areas with no vague filler. It sits just below anchor 5 because the capabilities are framed as trigger areas rather than explicit action verbs stating what the skill does with them.

Completeness

The "when" half is explicit and detailed ("Use when changing Electron SQLite IPC, ... or runtime verification of non-EPG database work"), but the "what" — that the skill provides ownership/flow and verification knowledge for this subsystem — is only weakly implied through the trigger list. It exceeds anchor 2's bare "Use when working with documents" pattern because the enumerated scope conveys substance, but lacks the explicit what-and-when pairing of anchor 4.

Trigger Term Quality

Terms like "SQLite", "IPC", "database worker", "cancellation", and "packaging" are phrases a developer would naturally say when needing this skill. A few natural variations are missing (e.g., "DB", "abort", "query"), so it does not reach the comprehensive synonym coverage of anchor 5.

Distinctiveness Conflict Risk

The description carves out a clear niche (this repo's SQLite database worker) and explicitly scopes "non-EPG database work", actively preventing overlap with the separate EPG worker skill. Triggers are distinct with minimal conflict risk.