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/Home.vue

@@ -523,8 +523,8 @@ onMounted(async () => {
     const usage = await fileBrowserClient.getUsage()
     cloudStorageUsed.value = usage.totalSize
     cloudFolderCount.value = usage.folderCount
-  } catch {
-    // FileBrowser may not be running — leave as loading
+  } catch (e) {
+    if (import.meta.env.DEV) console.warn('FileBrowser may not be running', e)
   }
   loadSystemStats()
   systemStatsInterval = setInterval(loadSystemStats, 30000)
@@ -583,8 +583,8 @@ async function loadSystemStats() {
     systemStats.diskTotal = res.disk_total_bytes
     systemStats.diskPercent = res.disk_total_bytes > 0 ? (res.disk_used_bytes / res.disk_total_bytes) * 100 : 0
     systemStats.uptimeSecs = res.uptime_secs
-  } catch {
-    // RPC unavailable — keep defaults
+  } catch (e) {
+    if (import.meta.env.DEV) console.warn('RPC unavailable — keeping defaults', e)
   }
 }