feat(#58): implement skill markdown/yaml editor UI (#121)

app/src/main/java/com/m57/hermescontrol/data/model/SaveSkillContentRequest.kt

@@ -0,0 +1,5 @@
+package com.m57.hermescontrol.data.model
+
+data class SaveSkillContentRequest(
+    val content: String,
+)

app/src/main/java/com/m57/hermescontrol/data/model/Skill.kt

@@ -5,4 +5,5 @@ data class Skill(
     val description: String?,
     val category: String?,
     val enabled: Boolean,
+    val content: String? = null,
 )

app/src/main/java/com/m57/hermescontrol/data/model/SkillContentResponse.kt

@@ -0,0 +1,6 @@
+package com.m57.hermescontrol.data.model
+
+data class SkillContentResponse(
+    val name: String,
+    val content: String,
+)

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

@@ -26,10 +26,12 @@ import com.m57.hermescontrol.data.model.PluginsHubResponse
 import com.m57.hermescontrol.data.model.ProfileSoulResponse
 import com.m57.hermescontrol.data.model.ProfilesResponse
 import com.m57.hermescontrol.data.model.RawConfigResponse
+import com.m57.hermescontrol.data.model.SaveSkillContentRequest
 import com.m57.hermescontrol.data.model.SessionListResponse
 import com.m57.hermescontrol.data.model.SessionMessagesResponse
 import com.m57.hermescontrol.data.model.SetActiveProfileRequest
 import com.m57.hermescontrol.data.model.Skill
+import com.m57.hermescontrol.data.model.SkillContentResponse
 import com.m57.hermescontrol.data.model.StatusResponse
 import com.m57.hermescontrol.data.model.SystemStatsResponse
 import com.m57.hermescontrol.data.model.ToggleSkillRequest
@@ -52,6 +54,17 @@ import retrofit2.http.Path
 import retrofit2.http.Query
 
 interface HermesApiService {
+    @GET("api/skills/{name}/content")
+    suspend fun getSkillContent(
+        @Path("name") name: String,
+    ): Response<SkillContentResponse>
+
+    @PUT("api/skills/{name}/content")
+    suspend fun saveSkillContent(
+        @Path("name") name: String,
+        @Body body: SaveSkillContentRequest,
+    ): Response<Unit>
+
     @GET("api/status")
     suspend fun getStatus(): Response<StatusResponse>
 

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

@@ -4,19 +4,32 @@ import retrofit2.Response
 import java.io.IOException
 
 sealed interface NetworkResult<out T> {
-    data class Success<out T>(val data: T) : NetworkResult<T>
+    data class Success<out T>(
+        val data: T,
+    ) : NetworkResult<T>
 
-    data class Failure(val error: NetworkError) : NetworkResult<Nothing>
+    data class Failure(
+        val error: NetworkError,
+    ) : NetworkResult<Nothing>
 }
 
 sealed interface NetworkError {
     val message: String
 
-    data class Http(val code: Int, override val message: String) : NetworkError
+    data class Http(
+        val code: Int,
+        override val message: String,
+    ) : NetworkError
 
-    data class Connection(override val message: String, val cause: IOException) : NetworkError
+    data class Connection(
+        override val message: String,
+        val cause: IOException,
+    ) : NetworkError
 
-    data class Unknown(override val message: String, val cause: Throwable) : NetworkError
+    data class Unknown(
+        override val message: String,
+        val cause: Throwable,
+    ) : NetworkError
 }
 
 fun mapHttpError(code: Int): NetworkError {

app/src/main/java/com/m57/hermescontrol/ui/achievements/AchievementsViewModel.kt

@@ -40,6 +40,7 @@ class AchievementsViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/channels/ChannelsViewModel.kt

@@ -37,6 +37,7 @@ class ChannelsViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, platforms = result.data.orEmpty()) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -63,6 +64,7 @@ class ChannelsViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "$platformId configured successfully") }
                     loadPlatforms()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to configure platform: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatBubble.kt

@@ -301,7 +301,9 @@ private fun parseToolOutput(content: String): ParsedToolOutput? {
     val trimmed = content.trim()
     if (!trimmed.startsWith("{") && !trimmed.startsWith("[")) return null
     return try {
-        val element = com.google.gson.JsonParser.parseString(trimmed)
+        val element =
+            com.google.gson.JsonParser
+                .parseString(trimmed)
         if (element.isJsonObject) {
             val obj = element.asJsonObject
 
@@ -310,10 +312,25 @@ private fun parseToolOutput(content: String): ParsedToolOutput? {
             val hasExitCode = obj.has("exit_code") || obj.has("exitCode")
 
             if (hasStdout || hasStderr || hasExitCode) {
-                val stdout = obj.get("stdout")?.takeIf { !it.isJsonNull }?.asString?.takeIf { it.isNotEmpty() }
-                val stderr = obj.get("stderr")?.takeIf { !it.isJsonNull }?.asString?.takeIf { it.isNotEmpty() }
+                val stdout =
+                    obj
+                        .get("stdout")
+                        ?.takeIf { !it.isJsonNull }
+                        ?.asString
+                        ?.takeIf { it.isNotEmpty() }
+                val stderr =
+                    obj
+                        .get("stderr")
+                        ?.takeIf { !it.isJsonNull }
+                        ?.asString
+                        ?.takeIf { it.isNotEmpty() }
                 val exitCode = (obj.get("exit_code") ?: obj.get("exitCode"))?.takeIf { !it.isJsonNull }?.asInt
-                val error = obj.get("error")?.takeIf { !it.isJsonNull }?.asString?.takeIf { it.isNotEmpty() }
+                val error =
+                    obj
+                        .get("error")
+                        ?.takeIf { !it.isJsonNull }
+                        ?.asString
+                        ?.takeIf { it.isNotEmpty() }
 
                 ParsedToolOutput(
                     isTerminal = true,

app/src/main/java/com/m57/hermescontrol/ui/chat/ChatViewModel.kt

@@ -450,6 +450,7 @@ class ChatViewModel(
                                 """.trimIndent()
                             addAssistantMessage(statusText)
                         }
+
                         is NetworkResult.Failure -> {
                             addAssistantMessage("Failed to retrieve status: ${result.error.message}")
                         }
@@ -472,6 +473,7 @@ class ChatViewModel(
                                 }
                             addAssistantMessage("**Sessions List:**\n$sessionsStr")
                         }
+
                         is NetworkResult.Failure -> {
                             addAssistantMessage("Failed to list sessions: ${result.error.message}")
                         }
@@ -500,6 +502,7 @@ class ChatViewModel(
                                 """.trimIndent()
                             addAssistantMessage(statsText)
                         }
+
                         is NetworkResult.Failure -> {
                             addAssistantMessage("Failed to retrieve system stats: ${result.error.message}")
                         }
@@ -627,6 +630,7 @@ class ChatViewModel(
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/config/ConfigViewModel.kt

@@ -44,6 +44,7 @@ class ConfigViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -73,6 +74,7 @@ class ConfigViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/connect/ConnectViewModel.kt

@@ -89,6 +89,7 @@ class ConnectViewModel : ViewModel() {
                         it.copy(isConnecting = false, connectionSuccess = true, errorMessage = null)
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     val msg =
                         when (val err = result.error) {
@@ -98,10 +99,17 @@ class ConnectViewModel : ViewModel() {
                                         AuthManager.setToken(null)
                                         "Invalid token (401 Unauthorized)"
                                     }
-                                    403 -> "Access denied (403 Forbidden)"
-                                    else -> "Server returned HTTP ${err.code}"
+
+                                    403 -> {
+                                        "Access denied (403 Forbidden)"
+                                    }
+
+                                    else -> {
+                                        "Server returned HTTP ${err.code}"
+                                    }
                                 }
                             }
+
                             is NetworkError.Connection -> {
                                 val causeMessage = err.cause.message ?: ""
                                 when {
@@ -111,6 +119,7 @@ class ConnectViewModel : ViewModel() {
                                     else -> "Connection failed: ${err.cause.message}"
                                 }
                             }
+
                             is NetworkError.Unknown -> {
                                 val causeMessage = err.cause.message ?: ""
                                 when {

app/src/main/java/com/m57/hermescontrol/ui/cron/CronJobsViewModel.kt

@@ -36,6 +36,7 @@ class CronJobsViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, jobs = result.data.orEmpty()) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -102,6 +103,7 @@ class CronJobsViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(toastMessage = "Job triggered successfully") }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to trigger cron job: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/gateway/GatewayViewModel.kt

@@ -37,6 +37,7 @@ class GatewayViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, status = result.data) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -78,6 +79,7 @@ class GatewayViewModel : ViewModel() {
                     }
                     loadStatus()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/kanban/KanbanViewModel.kt

@@ -47,6 +47,7 @@ class KanbanViewModel : ViewModel() {
                         selectBoard(currentBoard)
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -92,6 +93,7 @@ class KanbanViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -129,6 +131,7 @@ class KanbanViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Task created successfully") }
                     selectBoard(board)
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to create task: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/keys/KeysViewModel.kt

@@ -44,6 +44,7 @@ class KeysViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -71,6 +72,7 @@ class KeysViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to reveal key: ${result.error.message}") }
                 }
@@ -100,6 +102,7 @@ class KeysViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Key updated successfully") }
                     loadKeys()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to update key: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/logs/LogsViewModel.kt

@@ -37,6 +37,7 @@ class LogsViewModel : ViewModel() {
                     val logsList = body.lines ?: body.logs ?: emptyList()
                     _uiState.update { it.copy(isLoading = false, logs = logsList) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/mcp/McpServersViewModel.kt

@@ -43,6 +43,7 @@ class McpServersViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -83,6 +84,7 @@ class McpServersViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     revertToggle(server.name, originalEnabled, "Failed to toggle server: ${result.error.message}")
                 }
@@ -106,6 +108,7 @@ class McpServersViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -135,6 +138,7 @@ class McpServersViewModel : ViewModel() {
                     }
                     loadServers()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/model/ModelViewModel.kt

@@ -67,6 +67,7 @@ class ModelViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -98,6 +99,7 @@ class ModelViewModel : ViewModel() {
                     }
                     return@launch
                 }
+
                 is NetworkResult.Success -> {
                     val activeProfileName = activeProfileNameResResult.data.active
                     val updateResResult =
@@ -114,6 +116,7 @@ class ModelViewModel : ViewModel() {
                             _uiState.update { it.copy(toastMessage = "Successfully set model to $modelName") }
                             loadModelOptions()
                         }
+
                         is NetworkResult.Failure -> {
                             _uiState.update {
                                 it.copy(

app/src/main/java/com/m57/hermescontrol/ui/pairing/PairingViewModel.kt

@@ -39,6 +39,7 @@ class PairingViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, pairing = result.data) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -92,6 +93,7 @@ class PairingViewModel : ViewModel() {
                     }
                     loadPairing()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/plugins/PluginsViewModel.kt

@@ -37,6 +37,7 @@ class PluginsViewModel : ViewModel() {
                     val plugins = result.data.plugins.orEmpty()
                     _uiState.update { it.copy(isLoading = false, plugins = plugins) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -98,6 +99,7 @@ class PluginsViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Plugin installed successfully") }
                     loadPlugins()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to install plugin: ${result.error.message}") }
                 }
@@ -116,6 +118,7 @@ class PluginsViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Plugin uninstalled successfully") }
                     loadPlugins()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to uninstall plugin: ${result.error.message}") }
                 }
@@ -134,6 +137,7 @@ class PluginsViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Plugin updated successfully") }
                     loadPlugins()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to update plugin: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/profiles/ProfilesViewModel.kt

@@ -79,6 +79,7 @@ class ProfilesViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Switched to profile $name") }
                     loadProfiles()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -107,6 +108,7 @@ class ProfilesViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -143,6 +145,7 @@ class ProfilesViewModel : ViewModel() {
                     }
                     loadProfiles()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -174,6 +177,7 @@ class ProfilesViewModel : ViewModel() {
                     _uiState.update { it.copy(toastMessage = "Model settings updated") }
                     loadProfiles()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

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

@@ -156,6 +156,7 @@ class SettingsViewModel : ViewModel() {
                         it.copy(isTesting = false, testResult = "✅ Connected successfully")
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/skills/SkillsScreen.kt

@@ -2,20 +2,29 @@ package com.m57.hermescontrol.ui.skills
 
 import android.widget.Toast
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.Extension
+import androidx.compose.material.icons.filled.Save
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Card
 import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -25,8 +34,12 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.window.DialogProperties
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.m57.hermescontrol.theme.LocalSpacing
@@ -161,10 +174,24 @@ fun SkillsScreen(
                                         }
                                     }
                                 }
-                                Switch(
-                                    checked = skill.enabled,
-                                    onCheckedChange = { viewModel.toggleSkill(skill) },
-                                )
+                                Row(
+                                    verticalAlignment = Alignment.CenterVertically,
+                                    horizontalArrangement = Arrangement.spacedBy(8.dp),
+                                ) {
+                                    IconButton(
+                                        onClick = { viewModel.loadSkillContent(skill.name) },
+                                    ) {
+                                        Icon(
+                                            imageVector = Icons.Filled.Edit,
+                                            contentDescription = "Edit Skill File",
+                                            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                                        )
+                                    }
+                                    Switch(
+                                        checked = skill.enabled,
+                                        onCheckedChange = { viewModel.toggleSkill(skill) },
+                                    )
+                                }
                             }
                         }
                     }
@@ -172,4 +199,155 @@ fun SkillsScreen(
             }
         }
     }
+
+    state.editingSkillName?.let { skillName ->
+        SkillEditorDialog(
+            skillName = skillName,
+            isLoading = state.isLoadingContent,
+            initialContent = state.skillContent,
+            isSaving = state.isSavingContent,
+            saveSuccess = state.saveContentSuccess,
+            onSave = { content -> viewModel.saveSkillContent(skillName, content) },
+            onDismiss = { viewModel.clearEditor() },
+            onClearSaveSuccess = { viewModel.clearSaveSuccess() },
+        )
+    }
+}
+
+@Composable
+fun SkillEditorDialog(
+    skillName: String,
+    isLoading: Boolean,
+    initialContent: String?,
+    isSaving: Boolean,
+    saveSuccess: Boolean,
+    onSave: (String) -> Unit,
+    onDismiss: () -> Unit,
+    onClearSaveSuccess: () -> Unit,
+) {
+    var contentText by remember(initialContent) { mutableStateOf(initialContent.orEmpty()) }
+    var showDiscardConfirm by remember { mutableStateOf(false) }
+
+    val hasChanges =
+        remember(initialContent, contentText) {
+            val original = initialContent.orEmpty()
+            original != contentText
+        }
+
+    LaunchedEffect(saveSuccess) {
+        if (saveSuccess) {
+            onClearSaveSuccess()
+            onDismiss()
+        }
+    }
+
+    Dialog(
+        onDismissRequest = {
+            if (hasChanges) {
+                showDiscardConfirm = true
+            } else {
+                onDismiss()
+            }
+        },
+        properties = DialogProperties(usePlatformDefaultWidth = false),
+    ) {
+        Card(
+            modifier =
+                Modifier
+                    .fillMaxSize()
+                    .padding(16.dp),
+            colors =
+                CardDefaults.cardColors(
+                    containerColor = MaterialTheme.colorScheme.surface,
+                ),
+        ) {
+            HermesScaffold(
+                title = { Text("Edit: $skillName") },
+                onBack = {
+                    if (hasChanges) {
+                        showDiscardConfirm = true
+                    } else {
+                        onDismiss()
+                    }
+                },
+                showBack = true,
+                actions = {
+                    if (!isLoading) {
+                        IconButton(
+                            onClick = { onSave(contentText) },
+                            enabled = !isSaving,
+                        ) {
+                            if (isSaving) {
+                                CircularProgressIndicator(
+                                    modifier = Modifier.fillMaxSize(0.6f),
+                                    strokeWidth = 2.dp,
+                                    color = MaterialTheme.colorScheme.onSurface,
+                                )
+                            } else {
+                                Icon(
+                                    imageVector = Icons.Filled.Save,
+                                    contentDescription = "Save Changes",
+                                )
+                            }
+                        }
+                    }
+                },
+            ) { padding ->
+                Box(
+                    modifier =
+                        Modifier
+                            .fillMaxSize()
+                            .padding(padding),
+                ) {
+                    when {
+                        isLoading -> {
+                            LoadingState()
+                        }
+
+                        else -> {
+                            OutlinedTextField(
+                                value = contentText,
+                                onValueChange = { contentText = it },
+                                modifier =
+                                    Modifier
+                                        .fillMaxSize()
+                                        .padding(16.dp),
+                                textStyle =
+                                    TextStyle(
+                                        fontFamily = FontFamily.Monospace,
+                                        color = MaterialTheme.colorScheme.onSurface,
+                                    ),
+                                placeholder = {
+                                    Text("Enter skill content...")
+                                },
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    if (showDiscardConfirm) {
+        AlertDialog(
+            onDismissRequest = { showDiscardConfirm = false },
+            title = { Text("Discard changes?") },
+            text = { Text("You have unsaved changes. Are you sure you want to discard them?") },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        showDiscardConfirm = false
+                        onDismiss()
+                    },
+                ) {
+                    Text("Discard")
+                }
+            },
+            dismissButton = {
+                TextButton(onClick = { showDiscardConfirm = false }) {
+                    Text("Cancel")
+                }
+            },
+        )
+    }
 }

app/src/main/java/com/m57/hermescontrol/ui/skills/SkillsViewModel.kt

@@ -20,6 +20,11 @@ data class SkillsUiState(
     val skills: List<Skill> = emptyList(),
     val errorMessage: String? = null,
     val toastMessage: String? = null,
+    val isLoadingContent: Boolean = false,
+    val editingSkillName: String? = null,
+    val skillContent: String? = null,
+    val isSavingContent: Boolean = false,
+    val saveContentSuccess: Boolean = false,
 )
 
 class SkillsViewModel : ViewModel() {
@@ -37,6 +42,7 @@ class SkillsViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, skills = result.data.orEmpty()) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -90,6 +96,99 @@ class SkillsViewModel : ViewModel() {
         }
     }
 
+    fun loadSkillContent(skillName: String) {
+        _uiState.update {
+            it.copy(
+                isLoadingContent = true,
+                editingSkillName = skillName,
+                skillContent = null,
+                saveContentSuccess = false,
+            )
+        }
+        viewModelScope.launch {
+            val result =
+                withContext(Dispatchers.IO) {
+                    safeApiCall { ApiClient.hermesApi.getSkillContent(skillName) }
+                }
+            when (result) {
+                is NetworkResult.Success -> {
+                    _uiState.update {
+                        it.copy(
+                            isLoadingContent = false,
+                            skillContent = result.data?.content.orEmpty(),
+                        )
+                    }
+                }
+
+                is NetworkResult.Failure -> {
+                    _uiState.update {
+                        it.copy(
+                            isLoadingContent = false,
+                            editingSkillName = null,
+                            toastMessage = "Failed to load skill content: ${result.error.message}",
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    fun saveSkillContent(
+        skillName: String,
+        content: String,
+    ) {
+        _uiState.update { it.copy(isSavingContent = true, saveContentSuccess = false) }
+        viewModelScope.launch {
+            val result =
+                withContext(Dispatchers.IO) {
+                    safeApiCall {
+                        ApiClient.hermesApi.saveSkillContent(
+                            skillName,
+                            com.m57.hermescontrol.data.model
+                                .SaveSkillContentRequest(content),
+                        )
+                    }
+                }
+            when (result) {
+                is NetworkResult.Success -> {
+                    _uiState.update {
+                        it.copy(
+                            isSavingContent = false,
+                            saveContentSuccess = true,
+                            skillContent = content,
+                            toastMessage = "Skill saved successfully",
+                        )
+                    }
+                }
+
+                is NetworkResult.Failure -> {
+                    _uiState.update {
+                        it.copy(
+                            isSavingContent = false,
+                            toastMessage = "Failed to save skill content: ${result.error.message}",
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    fun clearEditor() {
+        _uiState.update {
+            it.copy(
+                editingSkillName = null,
+                skillContent = null,
+                isLoadingContent = false,
+                isSavingContent = false,
+                saveContentSuccess = false,
+            )
+        }
+    }
+
+    fun clearSaveSuccess() {
+        _uiState.update { it.copy(saveContentSuccess = false) }
+    }
+
     fun clearToast() {
         _uiState.update { it.copy(toastMessage = null) }
     }

app/src/main/java/com/m57/hermescontrol/ui/system/SystemViewModel.kt

@@ -51,6 +51,7 @@ class SystemViewModel : ViewModel() {
                     // Doctor is optional; many servers do not expose it.
                     loadDoctorReport()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -87,6 +88,7 @@ class SystemViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(toastMessage = "Backup triggered successfully") }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update { it.copy(toastMessage = "Failed to trigger backup: ${result.error.message}") }
                 }

app/src/main/java/com/m57/hermescontrol/ui/toolsets/ToolsetsViewModel.kt

@@ -37,6 +37,7 @@ class ToolsetsViewModel : ViewModel() {
                 is NetworkResult.Success -> {
                     _uiState.update { it.copy(isLoading = false, toolsets = result.data.orEmpty()) }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(

app/src/main/java/com/m57/hermescontrol/ui/webhooks/WebhooksViewModel.kt

@@ -48,6 +48,7 @@ class WebhooksViewModel : ViewModel() {
                         )
                     }
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(
@@ -78,6 +79,7 @@ class WebhooksViewModel : ViewModel() {
                     }
                     loadWebhooks()
                 }
+
                 is NetworkResult.Failure -> {
                     _uiState.update {
                         it.copy(