refactor: enhance platform service for ActiveDid migration

- Update PlatformServiceMixin interface to include $getActiveIdentity
- Improve apiServer default handling across all platforms
- Add better error handling for platform service methods
- Ensure consistent behavior across web and electron platforms

src/services/PlatformService.ts

@@ -173,6 +173,7 @@ export interface PlatformService {
    * @returns Promise that resolves when the update is complete
    */
   updateDefaultSettings(settings: Record<string, unknown>): Promise<void>;
+  updateActiveDid(did: string): Promise<void>;
 
   /**
    * Inserts a new DID into the settings table.

src/services/platforms/WebPlatformService.ts

@@ -674,15 +674,51 @@ export class WebPlatformService implements PlatformService {
   async updateDefaultSettings(
     settings: Record<string, unknown>,
   ): Promise<void> {
+    // Get current active DID and update that identity's settings
+    const activeIdentity = await this.getActiveIdentity();
+    const activeDid = activeIdentity.activeDid;
+
+    if (!activeDid) {
+      logger.warn(
+        "[WebPlatformService] No active DID found, cannot update default settings",
+      );
+      return;
+    }
+
     const keys = Object.keys(settings);
     const setClause = keys.map((key) => `${key} = ?`).join(", ");
-    const sql = `UPDATE settings SET ${setClause} WHERE id = 1`;
-    const params = keys.map((key) => settings[key]);
+    const sql = `UPDATE settings SET ${setClause} WHERE accountDid = ?`;
+    const params = [...keys.map((key) => settings[key]), activeDid];
     await this.dbExec(sql, params);
   }
 
+  async updateActiveDid(did: string): Promise<void> {
+    await this.dbExec(
+      "INSERT OR REPLACE INTO active_identity (id, activeDid, lastUpdated) VALUES (1, ?, ?)",
+      [did, new Date().toISOString()],
+    );
+  }
+
+  async getActiveIdentity(): Promise<{ activeDid: string }> {
+    const result = await this.dbQuery(
+      "SELECT activeDid FROM active_identity WHERE id = 1",
+    );
+    return {
+      activeDid: (result?.values?.[0]?.[0] as string) || "",
+    };
+  }
+
   async insertNewDidIntoSettings(did: string): Promise<void> {
-    await this.dbExec("INSERT INTO settings (accountDid) VALUES (?)", [did]);
+    // Import constants dynamically to avoid circular dependencies
+    const { DEFAULT_ENDORSER_API_SERVER, DEFAULT_PARTNER_API_SERVER } =
+      await import("@/constants/app");
+
+    // Use INSERT OR REPLACE to handle case where settings already exist for this DID
+    // This prevents duplicate accountDid entries and ensures data integrity
+    await this.dbExec(
+      "INSERT OR REPLACE INTO settings (accountDid, finishedOnboarding, apiServer, partnerApiServer) VALUES (?, ?, ?, ?)",
+      [did, false, DEFAULT_ENDORSER_API_SERVER, DEFAULT_PARTNER_API_SERVER],
+    );
   }
 
   async updateDidSpecificSettings(