fix: add default_qry_str to db_events Event interface, remove incorrect global augment

The field exists on the DB object but was missing from the TypeScript interface,
causing a false error in recovery_meetings search. Added it to db_events.ts where
it belongs. Removed the incorrect global DOM Event augment from the temp augments
file (was patching the wrong interface).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/types/temporary-svelte-augments.d.ts

@@ -54,12 +54,4 @@ declare module 'lucide-svelte' {
     export default _default;
 }
 
-// Temporary global augmentation to reduce noise where domain code accidentally typed an "Event".
-// This is a minimal, temporary change; prefer narrowing types in-source later.
-declare global {
-    interface Event {
-        default_qry_str?: string;
-    }
-}
-
 export {};