fix(review): attach the scope-error TSDoc to the class it documents

Two TSDoc blocks sat back to back above DocsSearchOutcome; the first describes
DocsSearchScopeError, which had no doc comment of its own. Moved it to the
class.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: j15z

apps/sim/lib/copilot/docs/docs-search.ts

@@ -22,11 +22,6 @@ export interface DocsSearchResult {
   similarity: number
 }
 
-/**
- * Thrown when the caller scopes a search to a `path` that is not a real page or
- * section in the docs corpus. Surfaced verbatim so the model can correct itself
- * rather than reading an empty result as "the docs say nothing about this".
- */
 /**
  * A search result set plus why it may be shorter than `topK`. The SQL LIMIT is
  * applied before the threshold and liveness filters, so these counts are what
@@ -42,6 +37,11 @@ export interface DocsSearchOutcome {
   droppedStale: number
 }
 
+/**
+ * Thrown when the caller scopes a search to a `path` that is not a real page or
+ * section in the docs corpus. Surfaced verbatim so the model can correct itself
+ * rather than reading an empty result as "the docs say nothing about this".
+ */
 export class DocsSearchScopeError extends Error {
   readonly code = 'DOCS_SEARCH_SCOPE' as const
   constructor(message: string) {