diff --git a/TODO.md b/TODO.md
index b494400..bf82a66 100644
--- a/TODO.md
+++ b/TODO.md
@@ -23,6 +23,11 @@ latest run passes.
 
 # Completed Steps
 
+- 2026-10-03: the tap-target check in `make frontend-viewport-test` expects one
+  visible pin button per WAN host row (issue #46), where it expected at least 10
+  of the 26, so pin buttons missing from only some rows now fail it. The host
+  row count the harness gathers, which the `app-rendered` check also reads, now
+  counts only the WAN host rows: the local host rows have no pin button
 - 2026-10-03: `backend/script/lint` says what went wrong with its
   `.golangci.yml` check (issue #34). On a hash mismatch it says to compare the
   file with the org standard: if they differ, restore the org standard; if they
@@ -211,9 +216,11 @@ latest run passes.
 - 2026-08-09: automated responsive-layout harness
   (`make frontend-viewport-test`): digest-pinned headless Chrome driven over CDP
   against the built `dist/`, viewport widths derived from the breakpoints in
-  `src/styles.css` ([#13](https://git.eeqj.de/sneak/netwatch/issues/13)). Every
-  check carries a presence guard so none of them can pass against a page it is
-  not actually measuring. Found two real layout defects, filed as
+  `src/styles.css` ([#13](https://git.eeqj.de/sneak/netwatch/issues/13)). The
+  tap-target and host-row checks each fail when they measured nothing; the
+  overflow, viewport-edge and clipped-text checks have no such guard of their
+  own and rely on the `app-rendered` check, which fails the run when the app did
+  not render. Found two real layout defects, filed as
   [#42](https://git.eeqj.de/sneak/netwatch/issues/42) and
   [#43](https://git.eeqj.de/sneak/netwatch/issues/43)
 - 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints, Makefile
diff --git a/test/viewport/README.md b/test/viewport/README.md
index d37a688..9ee28a5 100644
--- a/test/viewport/README.md
+++ b/test/viewport/README.md
@@ -49,10 +49,11 @@ sizes straddling the breakpoint for the rotation case.
   excluded: it is a design choice, not breakage.
 - **tap-targets-44px** — every interactive control is at least 44x44 CSS px on
   touch viewports, _and_ each selector in the control list matched at least the
-  number of visible elements it declares. The second half is what stops the
-  check passing vacuously: with size alone, a renamed class would take its
-  controls out of the measured set and the check would report "all 0 controls
-  are at least 44x44" and pass. See below.
+  number of visible elements it declares: one of each single control, and one
+  pin button per WAN host row. The second half is what stops the check passing
+  vacuously: with size alone, a renamed class would take its controls out of the
+  measured set and the check would report "all 0 controls are at least 44x44"
+  and pass. See below.
 - **host-rows-stacked / host-rows-side-by-side** — the rows genuinely reflow.
   Computed `flex-direction` _and_ the actual geometry are checked, and in the
   narrow layout the info block and the sparkline must each occupy essentially
diff --git a/test/viewport/checks.js b/test/viewport/checks.js
index 14c7ebf..d010037 100644
--- a/test/viewport/checks.js
+++ b/test/viewport/checks.js
@@ -15,7 +15,8 @@ export const MIN_TAP_TARGET_PX = 44;
 
 // The controls named in the definition of done, plus the pause button.
 // Each carries the smallest number of *visible* instances the page has to
-// contain for the tap-target oracle to be measuring anything at all.
+// contain, worked out from the facts gathered from that page, for the
+// tap-target oracle to be measuring every control it should.
 //
 // Without those floors the check is inert: `undersized` is empty both when
 // every control is large enough and when the selectors have gone stale and
@@ -24,13 +25,12 @@ export const MIN_TAP_TARGET_PX = 44;
 // for all three singleton controls vanishing at once — so the floor is per
 // selector, and one stale selector out of four fails the check.
 export const INTERACTIVE_CONTROLS = [
-    { selector: "#pause-btn", minCount: 1 },
-    { selector: "#interval-select", minCount: 1 },
-    // One per pinnable host row. `app-rendered` already requires at least
-    // 10 host rows, so a count below that means the pin buttons stopped
-    // being rendered per row rather than that there were fewer hosts.
-    { selector: ".pin-btn", minCount: 10 },
-    { selector: "#debug-toggle", minCount: 1 },
+    { selector: "#pause-btn", minCount: () => 1 },
+    { selector: "#interval-select", minCount: () => 1 },
+    // One per WAN host row, so pin buttons missing from even one row fail
+    // the check rather than only a drop below some fixed number.
+    { selector: ".pin-btn", minCount: (facts) => facts.rowCount },
+    { selector: "#debug-toggle", minCount: () => 1 },
 ];
 
 export const INTERACTIVE_SELECTORS = INTERACTIVE_CONTROLS.map(
@@ -106,7 +106,7 @@ export function evaluateChecks(facts, viewport, probes) {
     check(
         "app-rendered",
         facts.rowCount >= 10 && facts.numericLatencies >= 5,
-        `${facts.rowCount} host rows, ${facts.numericLatencies} showing a numeric latency`,
+        `${facts.rowCount} WAN host rows, ${facts.numericLatencies} showing a numeric latency`,
     );
 
     const viewportWidth = Math.min(facts.innerWidth, facts.documentClientWidth);
@@ -162,7 +162,8 @@ export function evaluateChecks(facts, viewport, probes) {
             seen.set(target.selector, (seen.get(target.selector) ?? 0) + 1);
         }
         const missing = INTERACTIVE_CONTROLS.filter(
-            (control) => (seen.get(control.selector) ?? 0) < control.minCount,
+            (control) =>
+                (seen.get(control.selector) ?? 0) < control.minCount(facts),
         );
 
         const undersized = facts.tapTargets.filter(
@@ -184,11 +185,11 @@ export function evaluateChecks(facts, viewport, probes) {
         const detail = [];
         if (missing.length > 0) {
             detail.push(
-                "oracle is not measuring the page: " +
+                "oracle is not measuring every control: " +
                     summarise(
                         missing,
                         (c) =>
-                            `${c.selector} matched ${seen.get(c.selector) ?? 0} visible element(s), expected at least ${c.minCount}`,
+                            `${c.selector} matched ${seen.get(c.selector) ?? 0} visible element(s), expected at least ${c.minCount(facts)}`,
                         4,
                     ),
             );
diff --git a/test/viewport/facts.js b/test/viewport/facts.js
index f266e6c..8aaa3a7 100644
--- a/test/viewport/facts.js
+++ b/test/viewport/facts.js
@@ -173,7 +173,9 @@ export function collectLayoutFacts(options) {
         clipped,
         tapTargets,
         rows,
-        rowCount: document.querySelectorAll(".host-row").length,
+        // WAN host rows only: each has a pin button, and the tap-target
+        // check expects one per row. The local host rows have none.
+        rowCount: document.querySelectorAll("#wan-hosts .host-row").length,
         numericLatencies: Array.from(
             document.querySelectorAll(".latency-value"),
         ).filter((el) => /\d/.test(el.textContent)).length,