Summary

#76 fixed topic-data 400 errors in runtime_only mode by introducing resolveParentEntityType() in src/lib/store.ts. The fix is correct; a few polish items remain.

Proposed solution

• Export resolveParentEntityType and add unit tests in src/lib/store-helpers.test.ts covering the runtime_only function/app hierarchy (the scenario behind the original 400), following the existing parseTreePath / inferEntityTypeFromDepth test pattern.
• Move NODE_TYPE_TO_RESOURCE and resolveParentEntityType above the /** Fallback: fetch entity details from API when not in tree */ comment so that comment again documents fetchEntityFromApi.
• Fix JSDoc typo in NODE_TYPE_TO_RESOURCE: "plural SOVD resources keyboard" -> "keywords".
• Remove the blank line between the two new JSDoc blocks and their declarations so they register as doc comments.
• Merge the split comment fragment in fetchEntityFromApi ("...depth-based inference." / "which assumes...") into one sentence.
• Optional: consolidate NODE_TYPE_TO_RESOURCE with the duplicate type maps (typeMap in refreshSelectedEntity, the ${parentType}s construction in the topic handler).

Additional context

Follow-up to #76. All items are in src/lib/store.ts.