fix: Add OAuth support to search query source enum (#9511)

- Add 'oauth' to SearchQuery enum in server and client models
- Add database migration to include 'oauth' in enum_search_queries_source
- Fixes 400 validation error when OAuth users search with parameters

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Claude <noreply@anthropic.com>

app/models/SearchQuery.ts

@@ -12,7 +12,7 @@ class SearchQuery extends Model {
   /**
    * Where the query originated.
    */
-  source: "api" | "app" | "slack";
+  source: "api" | "app" | "slack" | "oauth";
 
   delete = async () => {
     this.isSaving = true;

server/migrations/20250630100046-add-oauth-to-search-queries-source.js

@@ -0,0 +1,16 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up (queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      "ALTER TYPE enum_search_queries_source ADD VALUE 'oauth'"
+    );
+  },
+
+  async down (queryInterface, Sequelize) {
+    // Note: PostgreSQL doesn't support removing enum values easily
+    // This would require recreating the enum type and updating all references
+    throw new Error('Cannot rollback adding enum value to PostgreSQL');
+  }
+};

server/models/SearchQuery.ts

@@ -38,7 +38,7 @@ class SearchQuery extends Model<
   /**
    * Where the query originated.
    */
-  @Column(DataType.ENUM("slack", "app", "api"))
+  @Column(DataType.ENUM("slack", "app", "api", "oauth"))
   source: string;
 
   /**