feat: sortable workspace tabs, tab context menus, and terminal auto-create removal

- Add drag-and-drop tab reordering with persistent tab order
- Add right-click context menu with copy agent ID, copy resume command, close to right
- Switch workspace route encoding from percent-encoding to base64url
- Remove terminal auto-creation on directory listing (explicit create only)
- Add swipe gestures on terminal emulator for mobile sidebar navigation
- Highlight active workspace row in sidebar

packages/app/src/utils/provider-command-templates.ts

@@ -0,0 +1,40 @@
+export type ProviderCommandId = "resume";
+
+/**
+ * Declarative command templates for provider-native CLIs.
+ *
+ * Note: these are NOT Paseo agent IDs. They take provider-native session IDs.
+ * Example placeholders:
+ * - {sessionId}
+ */
+export const PROVIDER_COMMAND_TEMPLATES: Record<
+  string,
+  Partial<Record<ProviderCommandId, string>>
+> = {
+  codex: {
+    resume: "codex resume {sessionId}",
+  },
+  claude: {
+    resume: "claude --resume {sessionId}",
+  },
+};
+
+function renderTemplate(
+  template: string,
+  vars: Record<string, string>
+): string {
+  return template.replace(/\{(\w+)\}/g, (_match, key: string) => vars[key] ?? "");
+}
+
+export function buildProviderCommand(input: {
+  provider: string;
+  id: ProviderCommandId;
+  sessionId: string;
+}): string | null {
+  const template = PROVIDER_COMMAND_TEMPLATES[input.provider]?.[input.id] ?? null;
+  if (!template) {
+    return null;
+  }
+  return renderTemplate(template, { sessionId: input.sessionId });
+}
+