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/sessions/SessionsViewModel.kt

@@ -234,10 +234,6 @@ class SessionsViewModel : ViewModel(), ToastHost {
         }
     }
 
-    fun exitSelecting() {
-        _uiState.update { it.copy(isSelecting = false, selectedIds = emptySet()) }
-    }
-
     fun toggleSessionSelection(id: String) {
         _uiState.update {
             val updated = it.selectedIds.toMutableSet()
@@ -258,14 +254,6 @@ class SessionsViewModel : ViewModel(), ToastHost {
 
     // ── Rename ───────────────────────────────────────────────────────────
 
-    fun startRenaming(sessionId: String) {
-        _uiState.update { it.copy(renamingSessionId = sessionId) }
-    }
-
-    fun cancelRenaming() {
-        _uiState.update { it.copy(renamingSessionId = null) }
-    }
-
     fun renameSession(
         sessionId: String,
         newTitle: String,
@@ -308,27 +296,6 @@ class SessionsViewModel : ViewModel(), ToastHost {
         }
     }
 
-    // ── Copy prompt ──────────────────────────────────────────────────────
-
-    fun copySessionPrompt(sessionId: String) {
-        viewModelScope.launch {
-            val result =
-                safeApiCall {
-                    ApiClient.hermesApi.getSessionPrompt(sessionId)
-                }
-            when (result) {
-                is NetworkResult.Success -> {
-                    val promptText = result.data.prompt ?: "No prompt available"
-                    _uiState.update { it.copy(toastMessage = promptText) }
-                }
-
-                is NetworkResult.Failure -> {
-                    _uiState.update { it.copy(toastMessage = "Failed to get prompt: ${result.error.message}") }
-                }
-            }
-        }
-    }
-
     // ── Delete (single) ──────────────────────────────────────────────────
 
     fun requestDeleteSession(sessionId: String) {