fix(schema): add missing base columns migration for proxy_config (#492)

* fix(schema): add missing base columns migration for proxy_config

Add compatibility migration for older databases that may be missing
the basic proxy_config columns (proxy_enabled, listen_address,
listen_port, enable_logging) before adding newer timeout fields.

* fix: add proxy_config base column patches for v3.9.0-2 upgrade

Add base config column patches in create_tables_on_conn():
- proxy_enabled
- listen_address
- listen_port
- enable_logging

Ensures v3.9.0-2 users (user_version=2 but missing columns)
can properly upgrade with all required fields added.

* fix: migrate proxy_config singleton to per-app on startup for v2 databases

Add startup migration for legacy proxy_config tables that still have
singleton structure (no app_type column) even with user_version=2.

This fixes the issue where v3.9.0-2 databases with v2 schema but legacy
proxy_config structure would fail with "no such column: app_type" error.

- Call migrate_proxy_config_to_per_app in create_tables_on_conn
- Add regression test to verify the fix

* style: cargo fmt

---------

Co-authored-by: Jason <farion1231@gmail.com>

src-tauri/src/auto_launch.rs

@@ -75,8 +75,7 @@ mod tests {
     #[cfg(target_os = "macos")]
     #[test]
     fn test_get_macos_app_bundle_path_valid() {
-        let exe_path =
-            std::path::Path::new("/Applications/CC Switch.app/Contents/MacOS/CC Switch");
+        let exe_path = std::path::Path::new("/Applications/CC Switch.app/Contents/MacOS/CC Switch");
         let result = get_macos_app_bundle_path(exe_path);
         assert_eq!(
             result,
@@ -92,7 +91,9 @@ mod tests {
         let result = get_macos_app_bundle_path(exe_path);
         assert_eq!(
             result,
-            Some(std::path::PathBuf::from("/Users/test/My Apps/CC Switch.app"))
+            Some(std::path::PathBuf::from(
+                "/Users/test/My Apps/CC Switch.app"
+            ))
         );
     }