feat: implement paper search query planning and filtering logic

- Add `paperSearchCommon.ts` to handle search query parsing, normalization, and filtering.
- Implement functions for building search query plans, resolving date bounds, and filtering candidates based on various criteria.
- Create tests for provider query planning in `providerQueryPlanning.test.ts` to ensure correct handling of OR clauses and filter application.
- Add tests in `searchAggregation.test.ts` to verify the merging of cross-provider duplicates and the preservation of the semantic scholar paper ID.

Author: lhy0718

src/core/collection/bibtex.ts

@@ -266,12 +266,13 @@ function bibtexSourcePriority(source: StoredBibtexSource): number {
       return 2;
     case "openreview_generated":
     case "pmlr_generated":
-    case "arxiv_generated":
       return 3;
-    case "semantic_scholar":
+    case "arxiv_generated":
       return 4;
-    case "local_generated":
+    case "semantic_scholar":
       return 5;
+    case "local_generated":
+      return 6;
     default:
       return 99;
   }