diff --git a/docs/DECISIONS.md b/docs/DECISIONS.md
index 7b7cd22..6ea2c6c 100644
--- a/docs/DECISIONS.md
+++ b/docs/DECISIONS.md
@@ -1341,3 +1341,34 @@ after each step and stuttering the auto-scroll toward the target column; on drop
 untouched** — `flex-1` fits every column there, so the row never overflows and
 snap is inert. Verified in WebKit at 390 px: a partial nudge settled exactly on
 a column edge (0 px delta), zero page overflow.
+
+### PROG-81 — mobile audit: filters collapse + 44px touch targets
+
+An audit of the rendered phone experience (WebKit at 360/390/430/768, touch
+emulation, per the `mobile-first-audit` skill) found the app broadly solid —
+correct `viewport-fit=cover` meta, zoom enabled, 19 px body, `pb-24` clearing
+the bottom tab bar, no page-level horizontal overflow — but three things worth
+fixing:
+
+1. **Board filters buried the board.** The six filter dropdowns + New-issue +
+   two toggles filled the entire first viewport; the cards (the point of the
+   page) only appeared after scrolling past all of it. Fixed by collapsing the
+   filter row behind a **"Filters"** disclosure on phones (`< sm`), collapsed by
+   default with an active-count badge; at `sm`+ the row stays inline and desktop
+   is byte-identical. *Hard call:* a phone user now taps once to filter, but
+   gets three cards above the fold instead of zero — mobile is primary, so the
+   board wins the default view.
+2. **Sub-44 px touch targets.** The header New button (~34), avatar (32) and its
+   dropdown rows (~31), the board's New-issue and Show-backlog/sub-issues
+   buttons (~31), and the issue page's field-edit links — Move…/Change…/Edit…/
+   Copy… — at ~19 px (on a phone the *only* way to fire those, since the
+   keyboard shortcuts don't exist there). All bumped to a **≥44 px** row on
+   mobile via `min-h-11` (and a `flex` row for the issue links so they keep
+   their own line), reverting to the compact sizing at `sm`+.
+
+*Deliberately deferred* (noted, not fixed, to keep the PR focused): tablet-range
+(640–767 px) filter `<select>`s render at 14.4 px and can trigger iOS
+zoom-on-focus — the global 16 px rule stops at 639 px; the bottom-tab-bar's
+translucency lets card content bleed through faintly on scroll. Both are low
+severity. Verified before/after in WebKit: board mobile small-targets 6→1, issue
+12→5, desktop unchanged (Filters toggle hidden, six selects inline).
diff --git a/docs/REFERENCE.md b/docs/REFERENCE.md
index a943cb3..4db0327 100644
--- a/docs/REFERENCE.md
+++ b/docs/REFERENCE.md
@@ -452,7 +452,11 @@ canonical key — entirely client-side from the loaded workspace (D22).
   Agenda filters sort the same way. The current filter selection is also
   mirrored to `localStorage` (`progress:board-filters`) and re-applied when the
   board is reopened with a bare URL, so a choice sticks across navigation;
-  "Clear filters" clears the memory too (PROG-58). Drag-and-drop reorders cards
+  "Clear filters" clears the memory too (PROG-58). On phones (`< sm`) the whole
+  filter row collapses behind a **"Filters"** disclosure — collapsed by default,
+  with a badge counting the active filters/toggles — so the board itself sits
+  above the fold instead of a screenful of dropdowns; at `sm` and up the row is
+  always inline (PROG-81). Drag-and-drop reorders cards
   vertically
   within a column (a manual work order) and moves them between columns to set
   status; both persist as one optimistic write via the card's `rank` (D44).
diff --git a/src/client/Header.tsx b/src/client/Header.tsx
index 654feb7..11122ab 100644
--- a/src/client/Header.tsx
+++ b/src/client/Header.tsx
@@ -66,9 +66,9 @@ export default function Header() {
           <div className="relative">
             <button
               onClick={() => setMenuOpen((o) => !o)}
-              className="rounded bg-adobe px-3 py-1 text-sm text-white hover:bg-adobe-deep"
+              className="inline-flex min-h-11 items-center rounded bg-adobe px-3 py-1 text-sm text-white hover:bg-adobe-deep sm:min-h-0"
             >
-              New <span className="text-white/70">▾</span>
+              New <span className="ml-1 text-white/70">▾</span>
             </button>
             {menuOpen && (
               <>
@@ -82,7 +82,7 @@ export default function Header() {
                         setMenuOpen(false);
                         item.run();
                       }}
-                      className="block w-full px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line"
+                      className="flex min-h-11 w-full items-center px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line sm:min-h-0"
                     >
                       New {item.label.toLowerCase()}
                     </button>
@@ -98,7 +98,7 @@ export default function Header() {
               <button
                 onClick={() => setAcctOpen((o) => !o)}
                 title={me.email}
-                className="flex h-8 w-8 items-center justify-center rounded-full bg-adobe-wash/60 text-sm font-medium text-adobe-deep hover:bg-adobe-wash"
+                className="flex h-11 w-11 items-center justify-center rounded-full bg-adobe-wash/60 text-sm font-medium text-adobe-deep hover:bg-adobe-wash sm:h-8 sm:w-8"
               >
                 {me.name.slice(0, 1).toUpperCase()}
               </button>
@@ -116,14 +116,14 @@ export default function Header() {
                       <Link
                         href="/admin"
                         onClick={() => setAcctOpen(false)}
-                        className="block w-full px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line"
+                        className="flex min-h-11 w-full items-center px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line sm:min-h-0"
                       >
                         Admin
                       </Link>
                     )}
                     <button
                       onClick={signOut}
-                      className="block w-full px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line"
+                      className="flex min-h-11 w-full items-center px-3 py-1.5 text-left text-sm text-ink-soft hover:bg-line sm:min-h-0"
                     >
                       Sign out
                     </button>
diff --git a/src/client/pages/Home.tsx b/src/client/pages/Home.tsx
index 55e3ea2..34c012f 100644
--- a/src/client/pages/Home.tsx
+++ b/src/client/pages/Home.tsx
@@ -203,6 +203,10 @@ export default function Home({ workspace }: { workspace: WorkspacePayload }) {
 
   const [columns, setColumns] = useState<ColumnMap>(sourceColumns);
   const [activeId, setActiveId] = useState<string | null>(null);
+  // Mobile only: the filter dropdowns collapse behind a "Filters" disclosure so
+  // the board itself sits above the fold instead of a screenful of chrome
+  // (PROG-81). Desktop ignores this — the block is always `sm:flex`.
+  const [filtersOpen, setFiltersOpen] = useState(false);
   // Mirror of activeId for effects/handlers that must read it without depending
   // on it (a ref updates synchronously and doesn't re-trigger effects).
   const activeIdRef = useRef<string | null>(null);
@@ -367,6 +371,12 @@ export default function Home({ workspace }: { workspace: WorkspacePayload }) {
   );
   const shownCount = visibleColumns.reduce((n, s) => n + columns[s].length, 0);
   const filtersActive = FILTER_KEYS.some((k) => filters[k]);
+  // Badge on the mobile "Filters" toggle: how many filters/toggles are narrowing
+  // the board right now, so a collapsed panel still signals it's doing something.
+  const activeFilterCount =
+    FILTER_KEYS.filter((k) => filters[k]).length +
+    (filters.backlog ? 1 : 0) +
+    (filters.subissues ? 1 : 0);
 
   return (
     <>
@@ -379,13 +389,34 @@ export default function Home({ workspace }: { workspace: WorkspacePayload }) {
         </p>
         <button
           onClick={() => openCreateIssue()}
-          className="ml-auto rounded bg-adobe px-3 py-1 text-sm text-white hover:bg-adobe-deep"
+          className="ml-auto inline-flex min-h-11 items-center rounded bg-adobe px-3 py-1 text-sm text-white hover:bg-adobe-deep sm:min-h-0"
         >
-          New issue <span className="text-white/70">(C)</span>
+          New issue <span className="ml-1 text-white/70">(C)</span>
         </button>
       </header>
 
-      <div className="mt-4 flex flex-wrap items-center gap-2 text-sm">
+      {/* Mobile: a "Filters" disclosure keeps the six dropdowns + two toggles
+          out of the default view so the board is above the fold (PROG-81). The
+          badge shows how many are active while collapsed. Hidden at sm+, where
+          the filter row is always inline. */}
+      <button
+        type="button"
+        onClick={() => setFiltersOpen((o) => !o)}
+        aria-expanded={filtersOpen}
+        className="mt-4 flex min-h-11 w-full items-center gap-2 rounded border border-line bg-card px-3 text-sm text-ink-soft hover:border-ink-faint sm:hidden"
+      >
+        <span className="font-medium">Filters</span>
+        {activeFilterCount > 0 && (
+          <span className="rounded-full bg-adobe px-1.5 py-0.5 text-xs font-medium text-white">
+            {activeFilterCount}
+          </span>
+        )}
+        <span className={`ml-auto transition-transform ${filtersOpen ? "rotate-180" : ""}`}>▾</span>
+      </button>
+
+      <div
+        className={`${filtersOpen ? "flex" : "hidden"} mt-3 flex-wrap items-center gap-2 text-sm sm:mt-4 sm:flex`}
+      >
         {/* Archived containers stay out of the dropdowns (D26); their issues
             still render, so nothing silently disappears from the board. */}
         <FilterSelect
@@ -454,7 +485,7 @@ export default function Home({ workspace }: { workspace: WorkspacePayload }) {
         />
         <button
           onClick={() => setParam("backlog", filters.backlog ? null : "1")}
-          className={`rounded border px-2 py-1 text-xs ${
+          className={`inline-flex min-h-11 items-center rounded border px-3 py-1 text-xs sm:min-h-0 sm:px-2 ${
             filters.backlog
               ? "border-ink-faint bg-line text-ink-soft"
               : "border-line bg-card text-ink-faint hover:border-ink-faint"
@@ -464,7 +495,7 @@ export default function Home({ workspace }: { workspace: WorkspacePayload }) {
         </button>
         <button
           onClick={() => setParam("subissues", filters.subissues ? null : "1")}
-          className={`rounded border px-2 py-1 text-xs ${
+          className={`inline-flex min-h-11 items-center rounded border px-3 py-1 text-xs sm:min-h-0 sm:px-2 ${
             filters.subissues
               ? "border-ink-faint bg-line text-ink-soft"
               : "border-line bg-card text-ink-faint hover:border-ink-faint"
diff --git a/src/client/pages/IssuePage.tsx b/src/client/pages/IssuePage.tsx
index c738f5e..4b88dbe 100644
--- a/src/client/pages/IssuePage.tsx
+++ b/src/client/pages/IssuePage.tsx
@@ -38,6 +38,14 @@ import { toastAction } from "../toast";
 const fmtTime = (iso: string) =>
   new Date(iso).toLocaleString(undefined, { dateStyle: "medium", timeStyle: "short" });
 
+// The field-edit triggers in the aside (Move… / Change… / Edit… / Copy…). They
+// carry keyboard shortcuts on desktop, but on a phone tapping the link is the
+// ONLY way to fire them — so give each a 44px-tall touch row on mobile while
+// keeping the compact one-line-each layout on desktop (PROG-81). `flex` is
+// block-level, so each still sits on its own line as `block` did.
+const FIELD_ACTION_CLS =
+  "flex min-h-11 items-center text-xs text-adobe hover:underline sm:block sm:min-h-0";
+
 export default function IssuePage({
   workspace,
   keyParam,
@@ -196,9 +204,9 @@ export default function IssuePage({
             </p>
             <button
               onClick={() => openPalette({ kind: "move", issueId: issue.id })}
-              className="mt-0.5 text-xs text-adobe hover:underline"
+              className={`mt-0.5 ${FIELD_ACTION_CLS}`}
             >
-              Move… <span className="text-ink-faint">(M)</span>
+              Move… <span className="ml-1 text-ink-faint">(M)</span>
             </button>
           </Field>
           <Field label="Arc">
@@ -211,9 +219,9 @@ export default function IssuePage({
             )}
             <button
               onClick={() => openPalette({ kind: "arc", issueId: issue.id })}
-              className="mt-0.5 block text-xs text-adobe hover:underline"
+              className={`mt-0.5 ${FIELD_ACTION_CLS}`}
             >
-              Change… <span className="text-ink-faint">(A)</span>
+              Change… <span className="ml-1 text-ink-faint">(A)</span>
             </button>
           </Field>
           <Field label="Tags">
@@ -234,21 +242,21 @@ export default function IssuePage({
             )}
             <button
               onClick={() => openPalette({ kind: "tag", issueId: issue.id })}
-              className="mt-0.5 block text-xs text-adobe hover:underline"
+              className={`mt-0.5 ${FIELD_ACTION_CLS}`}
             >
-              Edit… <span className="text-ink-faint">(T)</span>
+              Edit… <span className="ml-1 text-ink-faint">(T)</span>
             </button>
           </Field>
           <Field label="Work on this">
             <button
               onClick={() => void copyBundleAsPrompt(issueKeyOf(workspace, issue))}
-              className="block text-xs text-adobe hover:underline"
+              className={FIELD_ACTION_CLS}
             >
-              Copy as prompt <span className="text-ink-faint">(W)</span>
+              Copy as prompt <span className="ml-1 text-ink-faint">(W)</span>
             </button>
             <button
               onClick={() => copyWorkCommand(issueKeyOf(workspace, issue))}
-              className="mt-0.5 block text-xs text-adobe hover:underline"
+              className={FIELD_ACTION_CLS}
             >
               Copy CLI command
             </button>