feat: Material You design system rewrite — Phases 1–4

Complete UI/UX rewrite of hermes-mobile with Material You design system.

Phase 1: Color/Theme/Type/Shapes/Spacing/Motion tokens
Phase 2: HermesScaffold, StateViews (skeleton/empty/error), SearchBar, StatusBadge, ToggleRow
Phase 3: Bottom nav + drawer navigation with NavigationController
Phase 4: All 17 screens rewritten with HermesScaffold and Material You patterns

Closes PR #3.

app/src/test/java/com/m57/hermescontrol/E2eIntegrationTest.kt

@@ -452,9 +452,9 @@ class E2eIntegrationTest {
         assertEquals(CronJobsScreen, backStack.lastOrNull())
         assertEquals(1, backStack.size)
 
-        // Non-clearing key settings adds to stack
-        NavigationController.navigateTo(SettingsScreen)
-        assertEquals(SettingsScreen, backStack.lastOrNull())
+        // Non-clearing drawer screen adds to stack
+        NavigationController.navigateTo(ProfilesScreen)
+        assertEquals(ProfilesScreen, backStack.lastOrNull())
         assertEquals(2, backStack.size)
         assertEquals(CronJobsScreen, backStack[0])
     }