feat: add log viewer components and fix build issues

- Add LogViewer component with syntax highlighting and auto-scroll
- Add LogControls for play/pause, auto-scroll, refresh, download, clear
- Add LogSearch component with search highlighting
- Add Input UI component
- Fix TypeScript type issues in ProcessCard and types.ts
- Fix XML-RPC client type issues
- Add force-dynamic to layout to prevent SSR issues with client components
- Add mounted state to Navbar for theme toggle hydration
- Add custom 404 page

Components added:
- components/logs/LogViewer.tsx - Main log viewer with real-time display
- components/logs/LogControls.tsx - Control panel for log viewing
- components/logs/LogSearch.tsx - Search input for filtering logs
- components/ui/input.tsx - Reusable input component

Fixes:
- ProcessStateCode type casting in ProcessCard
- XML-RPC client options type (use any to avoid library type issues)
- canStartProcess/canStopProcess type assertions
- Dynamic rendering to prevent SSR hydration issues

🤖 Generated with Claude Code (https://claude.com/claude-code)

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

components/layout/Navbar.tsx

@@ -1,5 +1,6 @@
 'use client';
 
+import { useState, useEffect } from 'react';
 import Link from 'next/link';
 import { usePathname } from 'next/navigation';
 import { Moon, Sun, Activity } from 'lucide-react';
@@ -16,8 +17,13 @@ const navItems = [
 
 export function Navbar() {
   const pathname = usePathname();
+  const [mounted, setMounted] = useState(false);
   const { theme, setTheme, resolvedTheme } = useTheme();
 
+  useEffect(() => {
+    setMounted(true);
+  }, []);
+
   const toggleTheme = () => {
     setTheme(resolvedTheme === 'dark' ? 'light' : 'dark');
   };
@@ -52,18 +58,20 @@ export function Navbar() {
         </div>
 
         {/* Theme Toggle */}
-        <Button
-          variant="ghost"
-          size="icon"
-          onClick={toggleTheme}
-          aria-label="Toggle theme"
-        >
-          {resolvedTheme === 'dark' ? (
-            <Sun className="h-5 w-5" />
-          ) : (
-            <Moon className="h-5 w-5" />
-          )}
-        </Button>
+        {mounted && (
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={toggleTheme}
+            aria-label="Toggle theme"
+          >
+            {resolvedTheme === 'dark' ? (
+              <Sun className="h-5 w-5" />
+            ) : (
+              <Moon className="h-5 w-5" />
+            )}
+          </Button>
+        )}
       </div>
     </nav>
   );