WIP: Fix Android file writing permissions and path handling

- Refactor writeFile method to properly handle Android Storage Access Framework (SAF) URIs
- Update path construction for Android to use Download directory with correct permissions
- Enhance error handling and logging throughout file operations
- Add detailed logging for debugging file system operations
- Fix permission checking logic to handle "File does not exist" case correctly
- Improve error messages and stack traces in logs
- Add timestamp to all log entries for better debugging
- Use proper directory types (ExternalStorage for Android, Documents for iOS)
- Add UTF-8 encoding specification for file writes

This is a work in progress as we're still seeing permission issues with Android file writing.

src/utils/logger.ts

@@ -21,7 +21,10 @@ function safeStringify(obj: unknown) {
 
 export const logger = {
   log: (message: string, ...args: unknown[]) => {
-    if (process.env.NODE_ENV !== "production" || process.env.VITE_PLATFORM === "capacitor") {
+    if (
+      process.env.NODE_ENV !== "production" ||
+      process.env.VITE_PLATFORM === "capacitor"
+    ) {
       // eslint-disable-next-line no-console
       console.log(message, ...args);
       const argsString = args.length > 0 ? " - " + safeStringify(args) : "";
@@ -29,7 +32,10 @@ export const logger = {
     }
   },
   warn: (message: string, ...args: unknown[]) => {
-    if (process.env.NODE_ENV !== "production" || process.env.VITE_PLATFORM === "capacitor") {
+    if (
+      process.env.NODE_ENV !== "production" ||
+      process.env.VITE_PLATFORM === "capacitor"
+    ) {
       // eslint-disable-next-line no-console
       console.warn(message, ...args);
       const argsString = args.length > 0 ? " - " + safeStringify(args) : "";