feat: copilot QoL batch — resizable, SFTP, context, errors, presets

Resizable panel:
- Drag handle on left border, pointer events, 320px–1200px range

SFTP MCP tools:
- sftp_list, sftp_read, sftp_write — full HTTP endpoints + bridge tools
- SftpService now Clone for MCP server sharing

Active session context:
- mcp_get_session_context — last 20 lines of any session's scrollback

Error watcher:
- Background scanner every 2s across all sessions
- 20+ patterns: permission denied, OOM, segfault, disk full, etc.
- mcp:error events emitted to frontend
- Sessions auto-registered on SSH connect

Configurable launch presets:
- Settings → AI Copilot section with preset editor
- Name + command pairs, stored in settings table as JSON
- One-click preset buttons in copilot panel empty state
- Defaults: Claude Code, Gemini CLI, Codex CLI
- User can set custom commands (e.g. claude --dangerously-skip-permissions)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/ai/CopilotPanel.vue

@@ -54,15 +54,23 @@
       </button>
     </div>
 
-    <!-- Empty state -->
-    <div v-else class="flex-1 flex flex-col items-center justify-center gap-2 p-4">
+    <!-- Empty state with quick-launch presets -->
+    <div v-else class="flex-1 flex flex-col items-center justify-center gap-3 p-4">
       <p class="text-xs text-[var(--wraith-text-muted)] text-center">
-        Select a shell and click Launch to start a local terminal.
+        Select a shell and click Launch, or use a preset:
       </p>
+      <div v-if="presets.length" class="flex flex-col gap-1.5 w-full max-w-[200px]">
+        <button
+          v-for="preset in presets"
+          :key="preset.name"
+          class="px-3 py-1.5 text-xs rounded bg-[var(--wraith-bg-tertiary)] border border-[var(--wraith-border)] text-[var(--wraith-text-secondary)] hover:text-[var(--wraith-text-primary)] hover:border-[var(--wraith-accent-blue)] transition-colors cursor-pointer text-left"
+          @click="launchPreset(preset)"
+        >
+          {{ preset.name }}
+        </button>
+      </div>
       <p class="text-[10px] text-[var(--wraith-text-muted)] text-center">
-        Run <code class="text-[var(--wraith-accent-blue)]">claude</code>,
-        <code class="text-[var(--wraith-accent-blue)]">gemini</code>, or
-        <code class="text-[var(--wraith-accent-blue)]">codex</code> here.
+        Configure presets in Settings → AI Copilot
       </p>
     </div>
     </div>
@@ -100,6 +108,10 @@ function startResize(e: PointerEvent): void {
   document.addEventListener("pointerup", onUp);
 }
 
+interface LaunchPreset { name: string; shell: string; command: string; }
+
+const presets = ref<LaunchPreset[]>([]);
+
 const shells = ref<ShellInfo[]>([]);
 const selectedShell = ref("");
 const connected = ref(false);
@@ -121,6 +133,37 @@ async function loadShells(): Promise<void> {
   }
 }
 
+async function loadPresets(): Promise<void> {
+  try {
+    const raw = await invoke<string | null>("get_setting", { key: "copilot_presets" });
+    if (raw) {
+      presets.value = JSON.parse(raw);
+    } else {
+      // Seed with sensible defaults
+      presets.value = [
+        { name: "Claude Code", shell: "", command: "claude" },
+        { name: "Gemini CLI", shell: "", command: "gemini" },
+        { name: "Codex CLI", shell: "", command: "codex" },
+      ];
+    }
+  } catch {
+    presets.value = [];
+  }
+}
+
+async function launchPreset(preset: LaunchPreset): Promise<void> {
+  const shell = preset.shell || selectedShell.value;
+  if (!shell) return;
+  selectedShell.value = shell;
+  await launch();
+  // After shell spawns, send the preset command
+  if (sessionId && connected.value) {
+    setTimeout(() => {
+      invoke("pty_write", { sessionId, data: preset.command + "\n" }).catch(() => {});
+    }, 300);
+  }
+}
+
 async function launch(): Promise<void> {
   if (!selectedShell.value) return;
   sessionEnded.value = false;
@@ -184,7 +227,10 @@ function cleanup(): void {
   sessionId = "";
 }
 
-onMounted(loadShells);
+onMounted(() => {
+  loadShells();
+  loadPresets();
+});
 
 onBeforeUnmount(() => {
   if (connected.value) kill();

src/components/common/SettingsModal.vue

@@ -154,6 +154,56 @@
               </div>
             </template>
 
+            <!-- AI Copilot -->
+            <template v-if="activeSection === 'copilot'">
+              <h4 class="text-xs font-semibold text-[var(--wraith-text-muted)] uppercase tracking-wider mb-3">Launch Presets</h4>
+              <p class="text-[10px] text-[var(--wraith-text-muted)] mb-3">
+                Configure quick-launch buttons for the AI copilot panel. Each preset spawns a shell and runs the command.
+              </p>
+
+              <div class="space-y-2">
+                <div
+                  v-for="(preset, idx) in copilotPresets"
+                  :key="idx"
+                  class="flex items-center gap-2"
+                >
+                  <input
+                    v-model="preset.name"
+                    type="text"
+                    placeholder="Name"
+                    class="w-24 px-2 py-1 text-xs rounded bg-[#0d1117] border border-[#30363d] text-[var(--wraith-text-primary)] outline-none focus:border-[var(--wraith-accent-blue)]"
+                  />
+                  <input
+                    v-model="preset.command"
+                    type="text"
+                    placeholder="Command (e.g. claude --dangerously-skip-permissions)"
+                    class="flex-1 px-2 py-1 text-xs rounded bg-[#0d1117] border border-[#30363d] text-[var(--wraith-text-primary)] outline-none focus:border-[var(--wraith-accent-blue)] font-mono"
+                  />
+                  <button
+                    class="text-[var(--wraith-text-muted)] hover:text-[var(--wraith-accent-red)] transition-colors cursor-pointer text-sm"
+                    @click="copilotPresets.splice(idx, 1)"
+                  >
+                    &times;
+                  </button>
+                </div>
+              </div>
+
+              <div class="flex gap-2 mt-3">
+                <button
+                  class="px-3 py-1.5 text-xs rounded border border-[#30363d] text-[var(--wraith-text-secondary)] hover:bg-[#30363d] transition-colors cursor-pointer"
+                  @click="copilotPresets.push({ name: '', shell: '', command: '' })"
+                >
+                  + Add Preset
+                </button>
+                <button
+                  class="px-3 py-1.5 text-xs rounded bg-[var(--wraith-accent-blue)] text-black font-bold transition-colors cursor-pointer"
+                  @click="saveCopilotPresets"
+                >
+                  Save
+                </button>
+              </div>
+            </template>
+
             <!-- About -->
             <template v-if="activeSection === 'about'">
               <h4 class="text-xs font-semibold text-[var(--wraith-text-muted)] uppercase tracking-wider mb-3">About</h4>
@@ -223,10 +273,13 @@ import { ref, watch, onMounted } from "vue";
 import { invoke } from "@tauri-apps/api/core";
 import { open as shellOpen } from "@tauri-apps/plugin-shell";
 
-type Section = "general" | "terminal" | "vault" | "about";
+type Section = "general" | "terminal" | "vault" | "copilot" | "about";
+
+interface CopilotPreset { name: string; shell: string; command: string; }
 
 const visible = ref(false);
 const activeSection = ref<Section>("general");
+const copilotPresets = ref<CopilotPreset[]>([]);
 const currentVersion = ref("loading...");
 
 const sections = [
@@ -245,6 +298,11 @@ const sections = [
     label: "Vault",
     icon: `<svg viewBox="0 0 16 16" fill="currentColor" class="w-3.5 h-3.5"><path d="M4 4v2h-.25A1.75 1.75 0 0 0 2 7.75v5.5c0 .966.784 1.75 1.75 1.75h8.5A1.75 1.75 0 0 0 14 13.25v-5.5A1.75 1.75 0 0 0 12.25 6H12V4a4 4 0 1 0-8 0Zm6.5 2V4a2.5 2.5 0 0 0-5 0v2ZM8 9.5a1.5 1.5 0 0 1 .5 2.915V13.5a.5.5 0 0 1-1 0v-1.085A1.5 1.5 0 0 1 8 9.5Z"/></svg>`,
   },
+  {
+    id: "copilot" as const,
+    label: "AI Copilot",
+    icon: `<svg viewBox="0 0 16 16" fill="currentColor" class="w-3.5 h-3.5"><path d="M5.5 8.5 9 5l-2-.5L4 7.5l1.5 1ZM1 2.75C1 1.784 1.784 1 2.75 1h10.5c.966 0 1.75.784 1.75 1.75v10.5A1.75 1.75 0 0 1 13.25 15H2.75A1.75 1.75 0 0 1 1 13.25Zm1.75-.25a.25.25 0 0 0-.25.25v10.5c0 .138.112.25.25.25h10.5a.25.25 0 0 0 .25-.25V2.75a.25.25 0 0 0-.25-.25Z"/></svg>`,
+  },
   {
     id: "about" as const,
     label: "About",
@@ -326,6 +384,33 @@ watch(
 function open(): void {
   visible.value = true;
   activeSection.value = "general";
+  loadCopilotPresets();
+}
+
+async function loadCopilotPresets(): Promise<void> {
+  try {
+    const raw = await invoke<string | null>("get_setting", { key: "copilot_presets" });
+    if (raw) {
+      copilotPresets.value = JSON.parse(raw);
+    } else {
+      copilotPresets.value = [
+        { name: "Claude Code", shell: "", command: "claude" },
+        { name: "Gemini CLI", shell: "", command: "gemini" },
+        { name: "Codex CLI", shell: "", command: "codex" },
+      ];
+    }
+  } catch {
+    copilotPresets.value = [];
+  }
+}
+
+async function saveCopilotPresets(): Promise<void> {
+  try {
+    const json = JSON.stringify(copilotPresets.value.filter(p => p.name && p.command));
+    await invoke("set_setting", { key: "copilot_presets", value: json });
+  } catch (err) {
+    console.error("Failed to save copilot presets:", err);
+  }
 }
 
 function close(): void {