fix(e2e): exempt truncate-clamped elements from per-element overflow walk

The api-tokens mobile no-overflow spec walks every descendant of the
mobile card-list and asserts `scrollWidth <= clientWidth + 1`. The
v1.4.19 fix wrapped long token names / usernames / permissions in a
`<TruncatedCell>` (Tailwind `truncate` ⇒ `overflow:hidden +
text-overflow:ellipsis + white-space:nowrap`), which by design keeps
`clientWidth` clamped to the parent column while `scrollWidth` reflects
the full text — exactly the case the assertion was tripping on.

Skip elements whose computed `text-overflow: ellipsis` and clamped
`overflow-x` show they are intentionally truncating. The page-level
`document.documentElement.scrollWidth <= innerWidth + 1` assertion
remains the authoritative no-scrollbar guard, so the regression intent
is preserved without false-positives on the truncate helper.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

e2e/admin-api-tokens-mobile.spec.ts

@@ -167,9 +167,31 @@ test.describe("/admin/api-tokens mobile no-overflow", () => {
     // Walk every element inside the mobile card-list and assert no
     // child has a wider scrollWidth than its container. This is the
     // Pixel-5 worst-case Marc kept hitting.
+    //
+    // Elements clamped via `truncate` (Tailwind's `overflow:hidden +
+    // text-overflow:ellipsis + white-space:nowrap` shorthand) are by
+    // design `scrollWidth > clientWidth` whenever the underlying text
+    // is longer than the parent column — that IS the truncation, not
+    // an overflow leak. Skip those so the assertion only fires on real
+    // layout culprits (a span without a width clamp pushing its parent
+    // wider). The page-level `dims.scrollWidth <= dims.innerWidth + 1`
+    // assertion below remains the authoritative no-scrollbar guard.
     const culprits = await page
       .getByTestId("admin-tokens-mobile-list")
       .evaluate((root) => {
+        const isTruncated = (el: Element): boolean => {
+          const cs = window.getComputedStyle(el);
+          if (cs.textOverflow === "ellipsis" && cs.overflowX !== "visible") {
+            return true;
+          }
+          // Tailwind's `truncate` shorthand and any explicit overflow
+          // clamp also legitimately keep the visible content inside
+          // clientWidth even though scrollWidth measures full content.
+          if (cs.overflowX === "hidden" || cs.overflowX === "clip") {
+            return true;
+          }
+          return false;
+        };
         const out: Array<{
           tag: string;
           klass: string;
@@ -177,7 +199,7 @@ test.describe("/admin/api-tokens mobile no-overflow", () => {
           clientWidth: number;
         }> = [];
         for (const el of root.querySelectorAll("*")) {
-          if (el.scrollWidth > el.clientWidth + 1) {
+          if (el.scrollWidth > el.clientWidth + 1 && !isTruncated(el)) {
             out.push({
               tag: el.tagName,
               klass: