style: fix lint errors across codebase

- Replace require() with dynamic import() in swift build test
- Fix empty catch block with comment
- Remove unnecessary escape characters in regex patterns
- prefer-const auto-fix in state-extractor

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: masonwyatt23

src/analyzer/state-extractor.ts

@@ -535,7 +535,7 @@ function extractServerState(sourceFile: SourceFile, filePath: string): Extracted
 
       const exprText = node.getExpression().getText();
       let library: 'react-query' | 'swr' | undefined;
-      let hookName = exprText;
+      const hookName = exprText;
 
       if (
         exprText === 'useQuery' ||

src/semantic/builder.ts

@@ -165,7 +165,7 @@ const AI_CALL_TIMEOUT_MS = 30_000;
 function sanitizeErrorMessage(err: unknown): string {
   const msg = err instanceof Error ? err.message : String(err);
   // Redact API key patterns: xai-..., sk-..., Bearer tokens
-  return msg.replace(/\b(xai-|sk-|Bearer\s+)[A-Za-z0-9_\-]{8,}/g, '$1[REDACTED]');
+  return msg.replace(/\b(xai-|sk-|Bearer\s+)[A-Za-z0-9_-]{8,}/g, '$1[REDACTED]');
 }
 
 /**

test/e2e/full-pipeline.test.ts

@@ -96,12 +96,12 @@ describe('Full Pipeline E2E', { timeout: 30_000 }, () => {
 
   test('generated project compiles with swift build', async () => {
     // Check if swift toolchain is available
+    const { execSync } = await import('child_process');
     let hasSwift = false;
     try {
-      const { execSync } = require('child_process');
       execSync('which swift', { stdio: 'pipe' });
       hasSwift = true;
-    } catch {}
+    } catch (_) { /* swift not installed */ }
 
     if (!hasSwift) {
       console.log('Swift toolchain not found — skipping compilation test');
@@ -123,7 +123,6 @@ describe('Full Pipeline E2E', { timeout: 30_000 }, () => {
 
     // Run swift build on the generated project
     try {
-      const { execSync } = require('child_process');
       const projectRoot = join(testOutput, '..');
       execSync('swift build', {
         cwd: projectRoot,

test/semantic/builder.test.ts

@@ -16,7 +16,7 @@ function makeRoute(urlPath: string, pagePath: string, opts: Partial<ExtractedRou
     urlPath,
     segments: urlPath.split('/').filter(Boolean).map(s => ({
       raw: s,
-      name: s.replace(/[\[\]\.]/g, ''),
+      name: s.replace(/[[\].]/g, ''),
       kind: s.startsWith('[') ? 'dynamic' as const : 'static' as const,
     })),
     files: { page: pagePath, layout: undefined, loading: undefined, error: undefined, notFound: undefined, template: undefined },