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/data/remote/AuthPayloads.kt

@@ -1,7 +1,6 @@
 package com.m57.hermescontrol.data.remote
 
 import kotlinx.serialization.Serializable
-import kotlinx.serialization.decodeFromString
 import kotlinx.serialization.encodeToString
 
 @Serializable
@@ -12,11 +11,6 @@ private data class PasswordLoginPayload(
     val next: String,
 )
 
-@Serializable
-private data class WebSocketTicketPayload(
-    val ticket: String,
-)
-
 /** JSON serialization for authentication requests and responses. */
 object AuthPayloads {
     fun passwordLogin(
@@ -31,11 +25,4 @@ object AuthPayloads {
                 next = "",
             ),
         )
-
-    fun webSocketTicket(body: String): String? =
-        runCatching {
-            OkHttpProvider.json.decodeFromString<WebSocketTicketPayload>(body)
-                .ticket
-                .takeIf { it.isNotBlank() }
-        }.getOrNull()
 }

app/src/main/java/com/m57/hermescontrol/data/remote/CookieSerialization.kt

@@ -77,13 +77,6 @@ fun wrapSessionCookie(rawValue: String): Cookie? {
     }.getOrNull()
 }
 
-/**
- * Build a permissive [Cookie] from a Set-Cookie `hermes_session_at=...`
- * header captured during login. Used by [PersistentCookieJar] when the server
- * does not echo an explicit domain (common for same-host dashboard logins).
- */
-fun sessionCookieFromValue(value: String): Cookie? = wrapSessionCookie(value)
-
 const val SESSION_COOKIE_NAME = "hermes_session_at"
 
 /**

app/src/main/java/com/m57/hermescontrol/data/remote/HermesApiService.kt

@@ -76,7 +76,6 @@ import com.m57.hermescontrol.data.model.SkillContentResponse
 import com.m57.hermescontrol.data.model.SkillHubInstallRequest
 import com.m57.hermescontrol.data.model.SkillHubSearchResponse
 import com.m57.hermescontrol.data.model.SkillHubUninstallRequest
-import com.m57.hermescontrol.data.model.SkillScanResponse
 import com.m57.hermescontrol.data.model.StatusResponse
 import com.m57.hermescontrol.data.model.SystemStatsResponse
 import com.m57.hermescontrol.data.model.TelegramOnboardingApplyRequest
@@ -211,14 +210,6 @@ interface HermesApiService {
         @Query("identifier") identifier: String,
     ): Response<SkillContentResponse>
 
-    @GET("api/skills/hub/scan")
-    suspend fun scanHubSkill(
-        @Query("identifier") identifier: String,
-    ): Response<SkillScanResponse>
-
-    @GET("api/skills/hub/sources")
-    suspend fun getHubSources(): Response<List<String>>
-
     @POST("api/skills/hub/install")
     suspend fun installHubSkill(
         @Body body: SkillHubInstallRequest,

app/src/main/java/com/m57/hermescontrol/data/remote/ServerEndpoint.kt

@@ -21,9 +21,6 @@ class ServerEndpoint private constructor(
     val baseUrl: HttpUrl,
     val securityWarning: String?,
 ) {
-    val isCleartext: Boolean
-        get() = baseUrl.scheme == "http"
-
     fun resolve(relativePath: String): HttpUrl {
         val path = relativePath.trim().trimStart('/')
         require(path.isNotEmpty()) { "Endpoint path must not be blank" }