fix(frontend): remove test types from base tsconfig for CI build

The base tsconfig.json had types: ["vitest/globals", "@testing-library/jest-dom/vitest"]
which are devDependencies only installed during development. CI production
builds with npm ci --production don't include these, causing TS2688 errors.

Solution:

Remove types array from tsconfig.json (let TS auto-discover available types)
Simplify tsconfig.build.json to only exclude test files
Add triple-slash type references to test setup file
Add typecheck config to vitest.config.ts
This ensures:

Production builds work without devDependencies
Test files still have proper type definitions
No JSX.IntrinsicElements errors from missing React types

frontend/src/hooks/useDocker.ts

@@ -12,10 +12,11 @@ export function useDocker(host?: string | null, serverId?: string | null) {
     queryFn: async () => {
       try {
         return await dockerApi.listContainers(host || undefined, serverId || undefined)
-      } catch (err: any) {
+      } catch (err: unknown) {
         // Extract helpful error message from response
-        if (err.response?.status === 503) {
-          const details = err.response?.data?.details
+        const error = err as { response?: { status?: number; data?: { details?: string } } }
+        if (error.response?.status === 503) {
+          const details = error.response?.data?.details
           const message = details || 'Docker service unavailable. Check that Docker is running.'
           throw new Error(message)
         }