chore: last frontend style nits — http case in common.js, setTimeout wrappers

- common.js fetchStateFile: 'HTTP' -> 'http' — last uppercase instance
  in the frontend (tabs.js, app.js, logs.js already fixed in prior PRs)
- tabs.js: two redundant arrow wrappers in setTimeout dropped —
  setTimeout(() => f(), N) -> setTimeout(f, N) where f takes no args

frontend/packages/dashboard/src/common.js

@@ -387,7 +387,7 @@ export const Panel = (() => {
 async function fetchStateFile(path) {
   const resp = await fetch('/api/state-file?path=' + encodeURIComponent(path));
   const text = await resp.text();
-  if (!resp.ok) throw new Error(text || ('HTTP ' + resp.status));
+  if (!resp.ok) throw new Error(text || ('http ' + resp.status));
   return text;
 }
 // A 2-tab file preview: a "rendered" tab (default) + a raw-text tab.

frontend/packages/dashboard/src/tabs.js

@@ -1281,7 +1281,7 @@ window.marked = marked;
             saveBtn.title = txt;
           } else {
             saveBtn.textContent = '✓';
-            setTimeout(() => fetchAndRenderToolGroups(), 800);
+            setTimeout(fetchAndRenderToolGroups, 800);
           }
         } catch (err) {
           saveBtn.textContent = 'err';
@@ -3218,7 +3218,7 @@ window.marked = marked;
       }
       // Hold the flash briefly so the operator can read it before the
       // refresh wipes the row in place.
-      setTimeout(() => { refreshSchedules(); }, 1500);
+      setTimeout(refreshSchedules, 1500);
     } catch (err) {
       alert('fire-now failed: ' + err);
       restoreBtn();