fix(theseus): prompts taller than the toolbar were cut off

The chrome view is exactly as tall as its rows, and a fixed-position
prompt mask adds nothing to the height it reports, so any prompt taller
than the toolbar — the new two-field favorites form lost its title and
buttons — was clipped at the view's edge. The view now grows to fit the
open prompt and shrinks back when it closes.

chrome.html

@@ -1106,16 +1106,28 @@
   }
   // In-page prompt modal — window.prompt is disabled in Electron BrowserViews.
   // Resolves to the trimmed string on OK, or null on Cancel / Escape / mask click.
+  // The chrome view is only as tall as its rows, and a fixed-position mask
+  // adds nothing to body.scrollHeight — so a prompt taller than the rows was
+  // cut off at the view's edge (the two-field favorites form lost its title
+  // and buttons). Grow the view to fit the box while a prompt is open;
+  // done() calls syncHeight() to shrink it back.
+  function growForPrompt(mask) {
+    try {
+      const box = mask.querySelector(".promptbox");
+      const need = box ? Math.ceil(box.getBoundingClientRect().height) + 56 : 0;
+      T.setChromeHeight(Math.max(document.body.scrollHeight, need));
+    } catch {}
+  }
   function inPrompt(label, initial) {
     return new Promise((resolve) => {
       const mask = document.createElement("div"); mask.className = "promptmask";
       mask.innerHTML = `<div class="promptbox"><div class="plbl">${label.replace(/</g,"&lt;")}</div>`
         + `<input type="text" spellcheck="false">`
         + `<div class="pact"><button class="pbtn pcancel" type="button">Cancel</button><button class="pbtn primary pok" type="button">OK</button></div></div>`;
-      document.body.appendChild(mask);
+      document.body.appendChild(mask); growForPrompt(mask);
       const input = mask.querySelector("input");
       input.value = String(initial ?? "");
-      const done = (val) => { try { mask.remove(); } catch {} document.removeEventListener("keydown", key); resolve(val); };
+      const done = (val) => { try { mask.remove(); } catch {} document.removeEventListener("keydown", key); syncHeight(); resolve(val); };
       const key = (e) => { if (e.key === "Escape") done(null); else if (e.key === "Enter") done(input.value.trim() || null); };
       document.addEventListener("keydown", key);
       mask.addEventListener("mousedown", (e) => { if (e.target === mask) done(null); });
@@ -1148,7 +1160,7 @@
         + `<div class="pfield"><label>Title</label><input type="text" class="ptitle" spellcheck="false" placeholder="Filled in from the address — edit as you like"></div>`
         + `<div class="perr" hidden></div>`
         + `<div class="pact"><button class="pbtn pcancel" type="button">Cancel</button><button class="pbtn primary pok" type="button">Save</button></div></div>`;
-      document.body.appendChild(mask);
+      document.body.appendChild(mask); growForPrompt(mask);
       const url = mask.querySelector(".purl"), title = mask.querySelector(".ptitle"), err = mask.querySelector(".perr");
       url.value = String(initial.url ?? ""); title.value = String(initial.title ?? "");
       let titleTouched = !!title.value;
@@ -1160,7 +1172,7 @@
       };
       url.addEventListener("input", autoTitle);
       title.addEventListener("input", () => { titleTouched = title.value.trim().length > 0; if (!titleTouched) autoTitle(); });
-      const done = (val) => { try { mask.remove(); } catch {} document.removeEventListener("keydown", key); resolve(val); };
+      const done = (val) => { try { mask.remove(); } catch {} document.removeEventListener("keydown", key); syncHeight(); resolve(val); };
       const submit = () => {
         const norm = normalizeBookmarkUrl(url.value);
         if (!norm) { err.textContent = "That doesn't look like a web address."; err.hidden = false; url.focus(); return; }