fix: correct timestamp/boolean types for PostgreSQL schema (Date not int, bool not 0/1)

scripts/import_talib_annotations.ts

@@ -93,9 +93,9 @@ async function ensureLabelTypes(labels: string[]): Promise<LabelTypeMap> {
         display_name: label,
         color,
         hotkey: null,
-        is_active: 1,
+        is_active: true,
         sort_order: sortOrder++,
-        created_at: Math.floor(Date.now() / 1000),
+        created_at: new Date(),
       }).returning();
       
       labelMap[label] = {
@@ -135,8 +135,8 @@ async function importAnnotations(
     try {
       await db.insert(spanAnnotations).values({
         chart_id: chartId,
-        start_time: ann.start_time,
-        end_time: ann.end_time,
+        start_time: new Date(ann.start_time * 1000),
+        end_time: new Date(ann.end_time * 1000),
         label: ann.label,
         confidence: ann.confidence || null,
         outcome: null,
@@ -145,7 +145,7 @@ async function importAnnotations(
         color: labelInfo.color,
         source: ann.source || 'programmatic',
         model_prediction: null,
-        created_at: Math.floor(Date.now() / 1000),
+        created_at: new Date(),
       });
       
       imported++;