fix: add dev-mode warnings to all 24 silent catch blocks

Every empty/comment-only catch block now logs a descriptive warning
in dev mode via `if (import.meta.env.DEV) console.warn(...)`. Covers
15 files across views, stores, components, and utils. Zero silent
catches remaining.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

neode-ui/src/views/Cloud.vue

@@ -172,8 +172,8 @@ async function loadCounts() {
         sectionCounts.value[section.id] = 0
       }
     }
-  } catch {
-    // Silently fail
+  } catch (e) {
+    if (import.meta.env.DEV) console.warn('FileBrowser count loading failed silently', e)
   }
 }