Fix: esc in the custom-prompt editor cancelled the whole jump instead of returning to Pi's choices (#5)

The host's dialog stack runs its own post-esc dismissal right after our onCancel
handler returns, targeting whatever was on top when esc fired. Replacing the
dialog synchronously inside that handler meant the host's cleanup wiped the
freshly-opened choices dialog straight back off, silently stranding the
askJump promise. Deferring the reopen by one tick lets the host finish first.

Author: navbytes

src/tui/route.tsx

@@ -900,7 +900,14 @@ export function TreeRoute(props: TreeRouteProps) {
         const mine = ++gen
         const back = () => {
           if (done || mine !== gen) return
-          openChoices()
+          // The host's own post-esc dismissal runs right after this handler returns, and it
+          // targets whatever was on top of the stack when `esc` was pressed — if we `replace`
+          // synchronously here, that dismissal fires *after* us and wipes the choices dialog
+          // right back off. Deferring a tick lets the host finish closing first.
+          setTimeout(() => {
+            if (done || mine !== gen) return
+            openChoices()
+          }, 0)
         }
         api.ui.dialog.replace(
           () =>

test/e2e/tui.test.ts

@@ -5,7 +5,7 @@
 import { afterAll, beforeAll, describe, expect, test } from "bun:test"
 import path from "node:path"
 import { readFileSync, readdirSync } from "node:fs"
-import { createProject, installPlugins, REPO_ROOT, runTui, startMock, type StartedMock } from "./harness.js"
+import { createProject, installPlugins, REPO_ROOT, runTui, runTuiScreens, startMock, type StartedMock } from "./harness.js"
 
 const e2e = process.env["CTREE_E2E"] === "1"
 
@@ -181,6 +181,56 @@ describe.skipIf(!e2e)("tui e2e: built plugin", () => {
     }
   }, 320_000)
 
+  test("esc in the custom-prompt editor loops back to Pi's choices instead of cancelling the whole jump", async () => {
+    const m = await startMock({ tool: false })
+    const proj = await createProject({ mockPort: m.port })
+    await installPlugins({ projectDir: proj.dir, server: [path.join(REPO_ROOT, "dist", "server.js")], tui: [path.join(REPO_ROOT, "dist", "tui.js")] })
+    try {
+      const { screens } = await runTuiScreens({
+        projectDir: proj.dir,
+        keys: [
+          ["Ask anything", 1, "first question\r"],
+          ["mock reply", 6, "second question\r"],
+          ["mock reply", 14, "/tree"],
+          ["Context tree", 0.5, "\r"],
+          ["Context tree ·", 2, "gg"],
+          ["Context tree ·", 3, "\r"],
+          // ↓↓ = "Summarize with a custom prompt"
+          ["Fork & prefill this turn", 1.5, "\x1b[B\x1b[B"],
+          ["Summarize with a custom prompt", 1, "\r"],
+          // the DialogPrompt's own title never lands as one contiguous run in the raw
+          // ANSI-stripped stream (its text-cursor widget repaints unlike a plain title), so
+          // wait on a single word from it instead of the full phrase
+          ["instructions", 2, "focus on x"],
+          // esc here must return to the 3-choice picker, not cancel the whole jump
+          ["instructions", 1, "\x1b"],
+          ["instructions", 2, "\r"],
+          // confirms we really landed back on a live picker (not a dangling, unresolved
+          // promise): finish the flow by picking "No summary" and sending the prefilled turn
+          ["mock reply|Ask anything", 16, "\r"],
+          ["mock reply|Ask anything", 16, "\x03"],
+          ["", 1, "\x03"],
+        ],
+        timeoutSec: 240,
+        cols: 130,
+        rows: 34,
+        exitWhenDone: true,
+      })
+      const afterEsc = screens.find((s) => s.label.includes("conditional key 10"))
+      expect(afterEsc).toBeDefined()
+      expect(afterEsc!.screen).toContain("Fork & prefill this turn?")
+      expect(afterEsc!.screen).not.toContain("Custom summarization instructions")
+
+      const dir = path.join(proj.dir, ".opencode", "context-tree")
+      const lines = readFileSync(path.join(dir, readdirSync(dir).find((f) => f.endsWith(".jsonl"))!), "utf8")
+      // the detour through the custom-prompt editor changed nothing else: exactly one fork
+      expect(lines.split('"type":"branch.opened"').length - 1).toBe(1)
+    } finally {
+      await m.stop()
+      await proj.cleanup()
+    }
+  }, 320_000)
+
   test("/tree opens the context tree route with rows and a context header", async () => {
     const text = await runTui({
       projectDir: project.dir,