fix: Resolve variable hoisting error in version comparison API

Critical Bug Fix:
- archivedVersions was used before declaration (line 147 vs line 165)
- Caused 'Cannot access before initialization' error
- Moved versionDescriptions and archivedVersions declarations to top
- Now defined BEFORE usage in resultsWithArchived.map()

Impact: Analytics page was completely broken (stuck on loading)
Resolution: API now returns data correctly, UI functional

Error: ReferenceError: Cannot access 'g' before initialization
Fix: Proper variable ordering in route.ts

app/api/analytics/version-comparison/route.ts

@@ -118,6 +118,17 @@ export async function GET() {
       }
     })
 
+    // Define version metadata FIRST (before usage)
+    const versionDescriptions: Record<string, string> = {
+      'v8': 'Money Line Sticky Trend (Nov 18+) - PRODUCTION',
+      'v7': 'HalfTrend with toggles (deprecated)',
+      'v6': 'HalfTrend + BarColor (Nov 12-18) - ARCHIVED',
+      'v5': 'Buy/Sell Signal (pre-Nov 12) - ARCHIVED',
+      'unknown': 'No version tracked (pre-Nov 12) - ARCHIVED'
+    }
+
+    const archivedVersions = ['v5', 'v6', 'v7', 'unknown']
+
     // Sort versions: v8 first (production), then v7, v6, v5, unknown (archived)
     const versionOrder: Record<string, number> = { 
       'v8': 0, 'v7': 1, 'v6': 2, 'v5': 3, 'unknown': 4 
@@ -128,23 +139,12 @@ export async function GET() {
       return orderA - orderB
     })
 
-    // Mark archived versions
+    // Mark archived versions (archivedVersions now defined above)
     const resultsWithArchived = results.map(r => ({
       ...r,
       archived: archivedVersions.includes(r.version)
     }))
 
-    // Get version descriptions and archived status
-    const versionDescriptions: Record<string, string> = {
-      'v8': 'Money Line Sticky Trend (Nov 18+) - PRODUCTION',
-      'v7': 'HalfTrend with toggles (deprecated)',
-      'v6': 'HalfTrend + BarColor (Nov 12-18) - ARCHIVED',
-      'v5': 'Buy/Sell Signal (pre-Nov 12) - ARCHIVED',
-      'unknown': 'No version tracked (pre-Nov 12) - ARCHIVED'
-    }
-
-    const archivedVersions = ['v5', 'v6', 'v7', 'unknown']
-
     return NextResponse.json({
       success: true,
       versions: resultsWithArchived,