feat(watch mode): Add watch mode support with CLI options and enhanced documentation

ts/tstest.logging.ts

@@ -520,4 +520,47 @@ export class TsTestLogger {
     
     return diff;
   }
+  
+  // Watch mode methods
+  watchModeStart() {
+    if (this.options.json) {
+      this.logJson({ event: 'watchModeStart' });
+      return;
+    }
+    
+    this.log(this.format('\n👀 Watch Mode', 'cyan'));
+    this.log(this.format('   Running tests in watch mode...', 'dim'));
+    this.log(this.format('   Press Ctrl+C to exit\n', 'dim'));
+  }
+  
+  watchModeWaiting() {
+    if (this.options.json) {
+      this.logJson({ event: 'watchModeWaiting' });
+      return;
+    }
+    
+    this.log(this.format('\n   Waiting for file changes...', 'dim'));
+  }
+  
+  watchModeRerun(changedFiles: string[]) {
+    if (this.options.json) {
+      this.logJson({ event: 'watchModeRerun', changedFiles });
+      return;
+    }
+    
+    this.log(this.format('\n🔄 File changes detected:', 'cyan'));
+    changedFiles.forEach(file => {
+      this.log(this.format(`   • ${file}`, 'yellow'));
+    });
+    this.log(this.format('\n   Re-running tests...\n', 'dim'));
+  }
+  
+  watchModeStop() {
+    if (this.options.json) {
+      this.logJson({ event: 'watchModeStop' });
+      return;
+    }
+    
+    this.log(this.format('\n\n👋 Stopping watch mode...', 'cyan'));
+  }
 }