fix: improve error handling in photo upload

- Add proper unknown type for error handling in PhotoDialog
- Remove any type in favor of unknown for better type safety
- Fix error message access with type guards

src/services/platforms/PyWebViewPlatformService.ts

@@ -2,19 +2,19 @@ import { ImageResult, PlatformService } from "../PlatformService";
 import { logger } from "../../utils/logger";
 
 export class PyWebViewPlatformService implements PlatformService {
-  async readFile(path: string): Promise<string> {
+  async readFile(_path: string): Promise<string> {
     throw new Error("Not implemented");
   }
 
-  async writeFile(path: string, content: string): Promise<void> {
+  async writeFile(_path: string, _content: string): Promise<void> {
     throw new Error("Not implemented");
   }
 
-  async deleteFile(path: string): Promise<void> {
+  async deleteFile(_path: string): Promise<void> {
     throw new Error("Not implemented");
   }
 
-  async listFiles(directory: string): Promise<string[]> {
+  async listFiles(_directory: string): Promise<string[]> {
     throw new Error("Not implemented");
   }
 
@@ -44,7 +44,7 @@ export class PyWebViewPlatformService implements PlatformService {
     return false;
   }
 
-  async handleDeepLink(url: string): Promise<void> {
+  async handleDeepLink(_url: string): Promise<void> {
     logger.error("handleDeepLink not implemented in PyWebView platform");
     throw new Error("Not implemented");
   }