fix(webapp): the palette always offers a way back (BEA-52) (#102)

⌘K on a path that doesn't resolve degraded to History ×2 and Sign out —
the tree-derived entries are gone on a dead route and the switcher lists
only OTHER projects, so on a single-project hub the palette, which is the
natural escape hatch there, was the one surface with no way out.

Four static entries now lead the candidate list whenever hub && project:
Go to project root, Dashboard, Installation, Settings — the same four
destinations (and icons) the sidebar has. They're independent of the tree
and of whether the path resolves, and each navigates to a real
VIEW_ROUTES URL, so a reload renders the same view. Panels only close on
a location change, so selecting the page you're already on closes them
explicitly.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

internal/webapp/frontend/e2e/browse.spec.ts

@@ -153,6 +153,30 @@ test("palette (⌘K) fuzzy-jumps to a file", async ({ page }) => {
   await expect(page.locator("#content h1")).toHaveText("Topic");
 });
 
+// BEA-52: on a path that doesn't resolve the tree entries are gone and the
+// switcher lists only other projects, so the palette used to offer no way
+// back. cmdk owns the list's id (it overwrites ours), hence [cmdk-list].
+test("palette on a dead route still offers the way back", async ({ page }) => {
+  await login(page);
+  const pid = await wikiId(page);
+  await page.goto(`/${pid}/does-not-exist.md`);
+  await expect(page.locator(".notfound")).toBeVisible();
+  await page.keyboard.press("ControlOrMeta+k");
+  await expect(page.locator("#palette")).toBeVisible();
+  for (const label of ["Go to project root", "Dashboard", "Installation", "Settings"]) {
+    await expect(page.locator("#palette [cmdk-list]")).toContainText(label);
+  }
+  // exactly one whole-project history entry, no duplicate
+  expect(
+    await page.locator("#palette [cmdk-item]", { hasText: "History: whole project" }).count(),
+  ).toBe(1);
+  await page.fill("#palette input", "Dashboard");
+  await page.keyboard.press("Enter");
+  await page.waitForURL(`/${pid}/dashboard`);
+  await page.reload(); // the entries are real URLs, not panel state
+  await expect(page.locator(".in-treemap")).toBeVisible();
+});
+
 // BEA-54: cmdk overwrites the `id` we pass its primitives, so every palette
 // rule anchored on one was dead — the input lost its only author `color` and
 // fell back to the UA's black. Anchors here are ours (#palette) or cmdk's own

internal/webapp/frontend/src/apps/Browser.tsx

@@ -283,6 +283,24 @@ export default function Browser(props: {
     const items: PaletteItem[] = [];
     const add = (icon: string, label: string, kind: string, run: () => void) =>
       items.push({ icon, label, kind, run });
+    // The project's own destinations, first and unconditional: on a path that
+    // doesn't resolve the tree-derived entries are gone and the switcher lists
+    // only OTHER projects, so without these the palette — the natural escape
+    // hatch on a dead route — is the one surface with no way back. An empty
+    // query scores everything 0 and the sort is stable, so first here is first
+    // on screen. Panels aren't routes and only close on a location CHANGE, so
+    // picking the page you're already on needs the explicit close.
+    if (hub && project) {
+      const pid = project.id;
+      const go = (to: string) => () => {
+        props.onClosePanel?.();
+        navigate(to);
+      };
+      add("folder", "Go to project root", "action", go("/" + pid));
+      add("dashboard", "Dashboard", "action", go(urlForView("dashboard", pid)));
+      add("terminal", "Installation", "action", go(urlForView("install", pid)));
+      add("gear", "Settings", "action", go(urlForView("settings", pid)));
+    }
     if (hub && project && path) {
       if (isFile) add("share", "Share: " + path, "action", shareNow);
       add("hist", "History: " + path, "action", historyNow);
@@ -302,7 +320,7 @@ export default function Browser(props: {
     for (const d of dirIndex.keys()) add("folder", d, "folder", () => openPath(d));
     for (const f of flatFiles) add("doc", f.path, "file", () => openPath(f.path));
     return items;
-  }, [hub, project, path, isFile, config.auth?.enabled, dirIndex, flatFiles, props.projects, shareNow, historyNow, openHistory, openPath]);
+  }, [hub, project, path, isFile, config.auth?.enabled, dirIndex, flatFiles, props.projects, props.onClosePanel, shareNow, historyNow, openHistory, openPath]);
 
   /* ---- "⋯ More" menu (secondary actions on narrow screens) ---- */
   useEffect(() => {

internal/webapp/static/index.html

@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <title>BearDrive</title>
 <link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' fill='%23f5a623'><rect x='4' y='4' width='5.6' height='24'/><rect x='11.2' y='4' width='14.4' height='11.2'/><rect x='11.2' y='16.8' width='16.8' height='11.2'/></svg>">
-  <script type="module" crossorigin src="/assets/index-CMWTx-Od.js"></script>
+  <script type="module" crossorigin src="/assets/index-DDAA5G2N.js"></script>
   <link rel="stylesheet" crossorigin href="/assets/index-B-zSoeQX.css">
 </head>
 <body>