fix(ui): keep the last four small fields at 16 px on a phone

The Coach memory editor, the managed profile's handover link, the cycle
length fields and the command palette's search set a font size under
16 px on touch screens, so iOS zoomed the page when one took focus. They
now read 16 px on a touch screen and keep their smaller size under a
fine pointer, like the field primitives. With no field left over, the
guard's list of known offenders goes.

src/__tests__/pwa-mobile-shell-guard.test.ts

@@ -304,20 +304,6 @@ function smallFields(
 }
 
 describe("no field call site goes under 16 px on a touch screen", () => {
-  /**
-   * Call sites still under 16 px, fixed by a change of their own. An entry
-   * that stops matching fails, so the list only shrinks.
-   */
-  const OPEN: Readonly<Record<string, string>> = {
-    "components/settings/coach-memory-section.tsx":
-      "/settings/coach memory editor",
-    "components/settings/access/managed-profile-handover.tsx":
-      "read-only handover link field",
-    "components/cycle/cycle-settings.tsx": "raw cycle-length number field",
-    "components/command-palette/command-palette.tsx":
-      "search field shrinks at `md:` without `pointer-fine:`",
-  };
-
   const scan = productionSources()
     .filter((rel) => rel.endsWith(".tsx"))
     .map((rel) => ({ rel, ...smallFields(rel, readSrc(rel)) }));
@@ -349,13 +335,6 @@ describe("no field call site goes under 16 px on a touch screen", () => {
   });
 
   it("no typed-into field sets a size under 16 px outside a fine pointer", () => {
-    const offenders = scan
-      .filter((file) => !(file.rel in OPEN))
-      .flatMap((file) => file.small);
-    expect(offenders).toEqual([]);
-  });
-
-  it.each(Object.keys(OPEN))("%s is still open", (rel) => {
-    expect(scan.find((file) => file.rel === rel)?.small ?? []).not.toEqual([]);
+    expect(scan.flatMap((file) => file.small)).toEqual([]);
   });
 });

src/components/command-palette/command-palette.tsx

@@ -329,7 +329,7 @@ export function PaletteBody({ isMobile }: { isMobile: boolean }) {
           autoCorrect="off"
           spellCheck={false}
           enterKeyHint="go"
-          className="placeholder:text-muted-foreground h-14 min-w-0 flex-1 bg-transparent text-base outline-none md:text-sm"
+          className="placeholder:text-muted-foreground h-14 min-w-0 flex-1 bg-transparent text-base outline-none md:pointer-fine:text-sm"
         />
         {isMobile ? (
           <Button

src/components/cycle/cycle-settings.tsx

@@ -371,7 +371,7 @@ function PriorField({
         max={max}
         value={value}
         onChange={(e) => onChange(e.target.value)}
-        className="border-input bg-background focus-visible:border-input-focus w-full rounded-md border px-3 py-2 text-sm focus-visible:outline-none"
+        className="border-input bg-background focus-visible:border-input-focus w-full rounded-md border px-3 py-2 text-base focus-visible:outline-none md:pointer-fine:text-sm"
       />
     </div>
   );

src/components/settings/access/managed-profile-handover.tsx

@@ -468,7 +468,7 @@ function HandoverLink({
               id="managed-profile-handover-url"
               readOnly
               value={link.url}
-              className="min-w-0 flex-1 font-mono text-xs"
+              className="min-w-0 flex-1 font-mono md:pointer-fine:text-xs"
               onFocus={(e) => e.currentTarget.select()}
             />
             <Button

src/components/settings/coach-memory-section.tsx

@@ -146,7 +146,6 @@ function FactRow({
             maxLength={REMEMBER_FACT_MAX_CHARS}
             rows={2}
             onChange={(e) => setDraft(e.target.value)}
-            className="text-sm"
           />
           <div className="flex flex-wrap items-center justify-end gap-2">
             <Button