feat(dashboard): UI refinements - density, flat agents table, history log

- Reduce layout density ~20% (tighter padding, margins, fonts)
- Flatten Agents table view with Client/Site columns (no grouping)
- Add version info to sidebar footer (UI v0.2.0, API v0.1.0)
- Replace Commands nav with sidebar History log
- Add /history page with full command list
- Add /history/:id detail view with output display
- Apply Mission Control styling to all new components

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

projects/msp-tools/guru-rmm/dashboard/src/App.tsx

@@ -9,7 +9,7 @@ import { Clients } from "./pages/Clients";
 import { Sites } from "./pages/Sites";
 import { Agents } from "./pages/Agents";
 import { AgentDetail } from "./pages/AgentDetail";
-import { Commands } from "./pages/Commands";
+import { History, HistoryDetail } from "./pages/History";
 import { Settings } from "./pages/Settings";
 import "./index.css";
 
@@ -118,10 +118,18 @@ function AppRoutes() {
         }
       />
       <Route
-        path="/commands"
+        path="/history"
         element={
           <ProtectedRoute>
-            <Commands />
+            <History />
+          </ProtectedRoute>
+        }
+      />
+      <Route
+        path="/history/:id"
+        element={
+          <ProtectedRoute>
+            <HistoryDetail />
           </ProtectedRoute>
         }
       />