feat: map GitHub issue labels to task categories

## Changes
- Automatically categorize tasks based on GitHub issue labels
- Added label-to-category mapping function with comprehensive coverage

## Category Mapping
- **bug_fix**: Issues labeled with bug, defect, error, fix
- **security**: Issues labeled with security, vulnerability, cve
- **performance**: Issues labeled with performance, optimization, speed
- **ui_ux**: Issues labeled with ui, ux, design, styling
- **infrastructure**: Issues labeled with infrastructure, devops, deployment, ci, cd
- **testing**: Issues labeled with test, testing, qa
- **refactoring**: Issues labeled with refactor, cleanup, maintenance, chore, tech-debt
- **documentation**: Issues labeled with documentation, docs
- **feature**: Default for enhancement, feature, improvement, or unlabeled issues

## Implementation
- Updated `determineCategoryFromLabels()` to return proper TaskCategory types
- Modified `createSpecForIssue()` to accept labels array parameter
- Updated both investigation and import handlers to pass labels
- Tasks now display with correct category badge in Kanban board

## Example
- GitHub issue with "bug" label → Task category: "bug_fix"
- GitHub issue with "enhancement" label → Task category: "feature"
- GitHub issue with no labels → Task category: "feature" (default)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

auto-claude-ui/src/main/ipc-handlers/github/import-handlers.ts

@@ -47,11 +47,12 @@ export function registerImportIssues(agentManager: AgentManager): void {
           };
 
           // Build description with metadata
-          const labels = issue.labels.map(l => l.name).join(', ');
+          const labelNames = issue.labels.map(l => l.name);
+          const labelsString = labelNames.join(', ');
           const description = `# ${issue.title}
 
 **GitHub Issue:** [#${issue.number}](${issue.html_url})
-${labels ? `**Labels:** ${labels}` : ''}
+${labelsString ? `**Labels:** ${labelsString}` : ''}
 
 ## Description
 
@@ -64,7 +65,8 @@ ${issue.body || 'No description provided.'}
             issue.number,
             issue.title,
             description,
-            issue.html_url
+            issue.html_url,
+            labelNames
           );
 
           // Start spec creation with the existing spec directory

auto-claude-ui/src/main/ipc-handlers/github/investigation-handlers.ts

@@ -146,7 +146,8 @@ export function registerInvestigateIssue(
           issue.number,
           issue.title,
           taskDescription,
-          issue.html_url
+          issue.html_url,
+          labels
         );
 
         // NOTE: We intentionally do NOT call agentManager.startSpecCreation() here

auto-claude-ui/src/main/ipc-handlers/github/spec-utils.ts

@@ -51,6 +51,58 @@ function slugifyTitle(title: string): string {
     .substring(0, 50);
 }
 
+/**
+ * Determine task category based on GitHub issue labels
+ * Maps to TaskCategory type from shared/types/task.ts
+ */
+function determineCategoryFromLabels(labels: string[]): 'feature' | 'bug_fix' | 'refactoring' | 'documentation' | 'security' | 'performance' | 'ui_ux' | 'infrastructure' | 'testing' {
+  const lowerLabels = labels.map(l => l.toLowerCase());
+
+  // Check for bug labels
+  if (lowerLabels.some(l => l.includes('bug') || l.includes('defect') || l.includes('error') || l.includes('fix'))) {
+    return 'bug_fix';
+  }
+
+  // Check for security labels
+  if (lowerLabels.some(l => l.includes('security') || l.includes('vulnerability') || l.includes('cve'))) {
+    return 'security';
+  }
+
+  // Check for performance labels
+  if (lowerLabels.some(l => l.includes('performance') || l.includes('optimization') || l.includes('speed'))) {
+    return 'performance';
+  }
+
+  // Check for UI/UX labels
+  if (lowerLabels.some(l => l.includes('ui') || l.includes('ux') || l.includes('design') || l.includes('styling'))) {
+    return 'ui_ux';
+  }
+
+  // Check for infrastructure labels
+  if (lowerLabels.some(l => l.includes('infrastructure') || l.includes('devops') || l.includes('deployment') || l.includes('ci') || l.includes('cd'))) {
+    return 'infrastructure';
+  }
+
+  // Check for testing labels
+  if (lowerLabels.some(l => l.includes('test') || l.includes('testing') || l.includes('qa'))) {
+    return 'testing';
+  }
+
+  // Check for refactoring labels
+  if (lowerLabels.some(l => l.includes('refactor') || l.includes('cleanup') || l.includes('maintenance') || l.includes('chore') || l.includes('tech-debt') || l.includes('technical debt'))) {
+    return 'refactoring';
+  }
+
+  // Check for documentation labels
+  if (lowerLabels.some(l => l.includes('documentation') || l.includes('docs'))) {
+    return 'documentation';
+  }
+
+  // Check for enhancement/feature labels (default)
+  // This catches 'enhancement', 'feature', 'improvement', or any unlabeled issues
+  return 'feature';
+}
+
 /**
  * Create a new spec directory and initial files
  */
@@ -59,7 +111,8 @@ export function createSpecForIssue(
   issueNumber: number,
   issueTitle: string,
   taskDescription: string,
-  githubUrl: string
+  githubUrl: string,
+  labels: string[] = []
 ): SpecCreationData {
   const specsBaseDir = getSpecsDir(project.autoBuildPath);
   const specsDir = path.join(project.path, specsBaseDir);
@@ -104,12 +157,15 @@ export function createSpecForIssue(
     JSON.stringify(requirements, null, 2)
   );
 
+  // Determine category from GitHub issue labels
+  const category = determineCategoryFromLabels(labels);
+
   // task_metadata.json
   const metadata: TaskMetadata = {
     sourceType: 'github',
     githubIssueNumber: issueNumber,
     githubUrl,
-    category: 'feature'
+    category
   };
   writeFileSync(
     path.join(specDir, 'task_metadata.json'),