fix(ui): prevent iOS zoom on custom answers

.changeset/ask-user-question-forms.md

@@ -2,4 +2,4 @@
 "@jmfederico/pi-web": patch
 ---
 
-Add an `ask_user` session tool that lets agents post structured question sets as one chat-native browser form. The form uses the transcript's single scroll area, keeps its header visible, and always gives every question a Custom free-text answer. Agents end their run while the form waits; users can submit full or partial answers, unanswered questions are reported explicitly, pending forms survive browser and web/API reconnects, and closed forms remain readable in the transcript. Disable the tool from **Settings → Session daemon**, with `askUser: false`, or with `PI_WEB_ASK_USER=false`.
+Add an `ask_user` session tool that lets agents post structured question sets as one chat-native browser form. The form uses the transcript's single scroll area, keeps its header visible, and always gives every question a Custom free-text answer with mobile-safe text sizing. Agents end their run while the form waits; users can submit full or partial answers, unanswered questions are reported explicitly, pending forms survive browser and web/API reconnects, and closed forms remain readable in the transcript. Disable the tool from **Settings → Session daemon**, with `askUser: false`, or with `PI_WEB_ASK_USER=false`.

src/client/src/components/AskUserCard.test.ts

@@ -82,6 +82,7 @@ describe("ask-user-card live form", () => {
     const textarea = requiredElement(root.querySelector("textarea"), "custom textarea");
     const label = requiredElement(textarea.closest("label"), "custom label");
     expect(label.textContent).toContain("Custom answer");
+    expect(getComputedStyle(textarea).fontSize).toBe("16px");
     expect(root.activeElement).toBe(textarea);
 
     textarea.value = "Svelte";

src/client/src/components/AskUserCard.ts

@@ -492,8 +492,7 @@ export class AskUserCard extends LitElement {
       background: var(--pi-bg);
       color: var(--pi-text);
       padding: 8px;
-      font: inherit;
+      font: var(--pi-control-font-size, 16px)/1.4 var(--pi-control-font-family, system-ui, sans-serif);
-      line-height: 1.4;
     }
     .form-footer {
       display: flex;