refactor: Improve Gitea API error reporting and proxy logging, update tab content display, and add Globe texture cleanup.

src/components/ActivityHeatmap.jsx

@@ -37,6 +37,7 @@ const ActivityHeatmap = () => {
                     }
                 } catch (e) {
                     console.warn("Gitea API error:", e);
+                    console.error('Failed to fetch Gitea heatmap. URL:', '/api/gitea/api/v1/users/Matiss/heatmap');
                 }
 
                 // 3. Process & Merge