feat: configurable shell selection + desktop settings UI (#20602)

packages/opencode/src/server/routes/instance/pty.ts

@@ -6,14 +6,41 @@ import z from "zod"
 import { AppRuntime } from "@/effect/app-runtime"
 import { Pty } from "@/pty"
 import { PtyID } from "@/pty/schema"
+import { Shell } from "@/shell/shell"
 import { NotFoundError } from "@/storage"
 import { errors } from "../../error"
 import { jsonRequest, runRequest } from "./trace"
 
+const ShellItem = z.object({
+  path: z.string(),
+  name: z.string(),
+  acceptable: z.boolean(),
+})
 const decodePtyID = Schema.decodeUnknownSync(PtyID)
 
 export function PtyRoutes(upgradeWebSocket: UpgradeWebSocket) {
   return new Hono()
+    .get(
+      "/shells",
+      describeRoute({
+        summary: "List available shells",
+        description: "Get a list of available shells on the system.",
+        operationId: "pty.shells",
+        responses: {
+          200: {
+            description: "List of shells",
+            content: {
+              "application/json": {
+                schema: resolver(z.array(ShellItem)),
+              },
+            },
+          },
+        },
+      }),
+      async (c) => {
+        return c.json(await Shell.list())
+      },
+    )
     .get(
       "/",
       describeRoute({