refactor: remove verified dead code across data, UI, and resources (#680)

* refactor: remove unused dead code across data, UI, and resources

* fix: resolve dangling references left by dead-code removal

Restore empty object Motion (braces required) and remove the 12 stale
test usages that still called the now-deleted production symbols:
- ServerStoreTest: removeServer/switchToServer tests
- ServerEndpointTest: isCleartext assertions
- ConnectViewModelTest: onHostChange/onPortChange tests + 3 dropped R.string refs
- SettingsViewModelTest: renameProfile tests + clearNavigateToLogin
- E2eIntegrationTest: previewSkill tests + onHostChange/onPortChange calls

Verified locally: compileDebugUnitTestKotlin + 48 tests pass.

* fix: remove unused imports flagged by ktlint

Drops 4 no-longer-referenced imports left by the dead-code removal:
- HermesApiService: SkillScanResponse (scanHubSkill removed)
- ServerEndpointTest: assertFalse, assertTrue (isCleartext assertions dropped)
- SettingsViewModelTest: assertFalse (rename tests removed)

---------

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/ui/settings/SettingsViewModel.kt

@@ -108,22 +108,6 @@ class SettingsViewModel(
         ApiClient.rebuild()
     }
 
-    fun onRenameProfileNameChange(value: String) {
-        _uiState.update { it.copy(renameProfileName = value, isSaved = false) }
-    }
-
-    fun renameProfile() {
-        val currentId = _uiState.value.selectedProfileId ?: return
-        val newName = _uiState.value.renameProfileName.trim()
-        if (newName.isBlank()) return
-        val updatedProfiles =
-            AuthManager.getConnectionProfiles().map {
-                if (it.id == currentId) it.copy(name = newName) else it
-            }
-        AuthManager.saveConnectionProfiles(updatedProfiles)
-        viewModelScope.launch(ioDispatcher) { loadSettings() }
-    }
-
     fun deleteProfile(profileId: String) {
         val updatedProfiles = AuthManager.getConnectionProfiles().filter { it.id != profileId }
         AuthManager.saveConnectionProfiles(updatedProfiles)
@@ -235,10 +219,6 @@ class SettingsViewModel(
         ApiClient.rebuild()
     }
 
-    fun clearNavigateToLogin() {
-        _uiState.update { it.copy(navigateToLogin = false) }
-    }
-
     // ── Delete confirmation ──────────────────────────────────────────────
 
     fun requestDeleteProfile(profileId: String) {