fix(context): Prevent enormous git diffs and OOM during context building by adding exclusion patterns, truncation, and diagnostic logging

ts/aidocs_classes/commit.ts

@@ -27,18 +27,71 @@ export class Commit {
       smartgitInstance,
       this.projectDir
     );
-    const diffStringArray = await gitRepo.getUncommittedDiff([
+
+    // Define comprehensive exclusion patterns
+    // smartgit@3.3.0+ supports glob patterns natively
+    const excludePatterns = [
+      // Lock files
       'pnpm-lock.yaml',
       'package-lock.json',
       'npm-shrinkwrap.json',
       'yarn.lock',
       'deno.lock',
       'bun.lockb',
-      '.claude/*',
-      '.cursor/*',
-      '.vscode/*',
-      '.idea/*',
-    ]);
+
+      // Build artifacts (main culprit for large diffs!)
+      'dist/**',
+      'dist_*/**',           // dist_ts, dist_web, etc.
+      'build/**',
+      '.next/**',
+      'out/**',
+      'public/dist/**',
+
+      // Compiled/bundled files
+      '**/*.js.map',
+      '**/*.d.ts.map',
+      '**/*.min.js',
+      '**/*.bundle.js',
+      '**/*.chunk.js',
+
+      // IDE/Editor directories
+      '.claude/**',
+      '.cursor/**',
+      '.vscode/**',
+      '.idea/**',
+      '**/*.swp',
+      '**/*.swo',
+
+      // Logs and caches
+      '.nogit/**',
+      '**/*.log',
+      '.cache/**',
+      '.rpt2_cache/**',
+      'coverage/**',
+      '.nyc_output/**',
+    ];
+
+    // Pass glob patterns directly to smartgit - it handles matching internally
+    const diffStringArray = await gitRepo.getUncommittedDiff(excludePatterns);
+
+    // Diagnostic logging for diff statistics
+    if (diffStringArray.length > 0) {
+      const totalChars = diffStringArray.join('\n\n').length;
+      const estimatedTokens = Math.ceil(totalChars / 4);
+
+      console.log(`📊 Git diff statistics:`);
+      console.log(`   Files changed: ${diffStringArray.length}`);
+      console.log(`   Total characters: ${totalChars.toLocaleString()}`);
+      console.log(`   Estimated tokens: ${estimatedTokens.toLocaleString()}`);
+      console.log(`   Exclusion patterns: ${excludePatterns.length}`);
+
+      if (estimatedTokens > 50000) {
+        console.warn(`⚠️  WARNING: Unusually large diff (${estimatedTokens.toLocaleString()} tokens)`);
+        console.warn(`   This may indicate build artifacts or large files in the diff.`);
+        console.warn(`   Consider reviewing uncommitted changes or improving exclusion patterns.`);
+      }
+    }
+
     // Use the new TaskContextFactory for optimized context
     const taskContextFactory = new (await import('../context/index.js')).TaskContextFactory(
       this.projectDir,