Add v0.1.3 backend features: metadata fields and search

Backend Changes:
- Add estimated_minutes field to tasks (stored as integer minutes)
- Add tags field (JSON array) for categorizing tasks
- Add flag_color field for visual priority indicators
- Add search endpoint (/api/search) with project filtering
- Update JSON import to handle new metadata fields

Frontend Changes:
- Display version v0.1.3 in header
- Add search API client function
- Add format utility for time display (30m, 1.5h, etc.)

Example Data:
- Update example-import.json with time estimates, tags, and flags
- Demonstrate nested metadata inheritance

Note: Frontend UI for displaying/editing these fields in progress

frontend/src/App.jsx

@@ -7,10 +7,15 @@ function App() {
     <div className="min-h-screen bg-cyber-dark">
       <header className="border-b border-cyber-orange/30 bg-cyber-darkest">
         <div className="container mx-auto px-4 py-4">
-          <h1 className="text-2xl font-bold text-cyber-orange">
-            TESSERACT
-            <span className="ml-3 text-sm text-gray-500">Task Decomposition Engine</span>
-          </h1>
+          <div className="flex justify-between items-center">
+            <div>
+              <h1 className="text-2xl font-bold text-cyber-orange">
+                TESSERACT
+                <span className="ml-3 text-sm text-gray-500">Task Decomposition Engine</span>
+                <span className="ml-2 text-xs text-gray-600">v0.1.3</span>
+              </h1>
+            </div>
+          </div>
         </div>
       </header>
 

frontend/src/utils/api.js

@@ -56,3 +56,12 @@ export const importJSON = (data) => fetchAPI('/import-json', {
   method: 'POST',
   body: JSON.stringify(data),
 });
+
+// Search
+export const searchTasks = (query, projectIds = null) => {
+  const params = new URLSearchParams({ query });
+  if (projectIds && projectIds.length > 0) {
+    params.append('project_ids', projectIds.join(','));
+  }
+  return fetchAPI(`/search?${params.toString()}`);
+};

frontend/src/utils/format.js

@@ -0,0 +1,17 @@
+// Format minutes into display string
+export function formatTime(minutes) {
+  if (!minutes || minutes === 0) return null;
+
+  if (minutes < 60) {
+    return `${minutes}m`;
+  }
+
+  const hours = minutes / 60;
+  return `${hours.toFixed(1)}h`;
+}
+
+// Format tags as comma-separated string
+export function formatTags(tags) {
+  if (!tags || tags.length === 0) return null;
+  return tags.join(', ');
+}