refactor: improve logging levels and environment configuration

- Fix logging levels: change verbose debugging from info to debug level
  - TestView: component mounting, boot-time config, URL flow testing
  - main.capacitor.ts: deeplink processing steps and router state
  - HomeView: API call details, component state updates, template rendering

- Remove redundant environment variable override in vite.config.common.mts
  - Environment loading via dotenv works correctly
  - Manual override was defensive programming but unnecessary
  - Simplifies configuration and reduces maintenance burden

- Add comprehensive Playwright timeout behavior documentation
  - README.md: detailed timeout types, failure behavior, debugging guide
  - TESTING.md: timeout failure troubleshooting and common scenarios
  - Clarifies that timeout failures indicate real issues, not flaky tests

- Fix TypeScript configuration for .mts imports
  - tsconfig.node.json: add allowImportingTsExtensions for Vite config files
  - Resolves import path linting errors for .mts extensions

All changes maintain existing functionality while improving code quality
and reducing log noise in production environments.

src/views/TestView.vue

@@ -625,12 +625,12 @@ export default class Help extends Vue {
    * Uses PlatformServiceMixin for database access
    */
   async mounted() {
-    logger.info(
+    logger.debug(
       "[TestView] 🚀 Component mounting - starting URL flow tracking",
     );
 
     // Boot-time logging for initial configuration
-    logger.info("[TestView] 🌍 Boot-time configuration detected:", {
+    logger.debug("[TestView] 🌍 Boot-time configuration detected:", {
       platform: process.env.VITE_PLATFORM,
       defaultEndorserApiServer: process.env.VITE_DEFAULT_ENDORSER_API_SERVER,
       defaultPartnerApiServer: process.env.VITE_DEFAULT_PARTNER_API_SERVER,
@@ -996,7 +996,7 @@ export default class Help extends Vue {
     this.urlTestResults = [];
 
     try {
-      logger.info("[TestView] 🔬 Starting comprehensive URL flow test");
+      logger.debug("[TestView] 🔬 Starting comprehensive URL flow test");
       this.addUrlTestResult("🚀 Starting URL flow test...");
 
       // Test 1: Current state
@@ -1124,7 +1124,7 @@ export default class Help extends Vue {
       );
 
       this.addUrlTestResult(`\n✅ URL flow test completed successfully!`);
-      logger.info("[TestView] ✅ URL flow test completed successfully");
+      logger.debug("[TestView] ✅ URL flow test completed successfully");
     } catch (error) {
       const errorMsg = `❌ URL flow test failed: ${error instanceof Error ? error.message : String(error)}`;
       this.addUrlTestResult(errorMsg);