diff --git a/frontend/src/i18n/__tests__/i18n.test.ts b/frontend/src/i18n/__tests__/i18n.test.ts
index 567da518ba..323dd697d5 100644
--- a/frontend/src/i18n/__tests__/i18n.test.ts
+++ b/frontend/src/i18n/__tests__/i18n.test.ts
@@ -39,22 +39,10 @@ describe('i18n configuration', () => {
     expect(i18n.t(key, { lng: 'en' })).toBe(expected);
   });
 
-  it.each([
-    [0, '1 · 0 agents', '1 member, 0 agents'],
-    [1, '1 · 1 agent', '1 member, 1 agent'],
-    [2, '1 · 2 agents', '1 member, 2 agents'],
-  ])('pluralizes the compact pod header at %i agents', (count, visible, accessible) => {
-    const members = i18n.t('podChat.header.members', { lng: 'en', count: 1 });
-    const agents = i18n.t('podChat.header.agents', { lng: 'en', count });
-    expect(i18n.t('podChat.header.compactMeta', { lng: 'en', members: 1, agents })).toBe(visible);
-    expect(i18n.t('podChat.header.compactMetaAccessible', { lng: 'en', members, agents })).toBe(accessible);
-  });
-
-  it('keeps the Chinese compact count while naming it for assistive tech', () => {
-    const members = i18n.t('podChat.header.members', { lng: 'zh-CN', count: 1 });
-    const agents = i18n.t('podChat.header.agents', { lng: 'zh-CN', count: 1 });
-    expect(i18n.t('podChat.header.compactMeta', { lng: 'zh-CN', members: 1, agents })).toBe('1 · 1个智能体');
-    expect(i18n.t('podChat.header.compactMetaAccessible', { lng: 'zh-CN', members, agents })).toBe('1名成员，1个智能体');
+  it('pluralizes the member count the compact pod header shows', () => {
+    expect(i18n.t('podChat.header.members', { lng: 'en', count: 1 })).toBe('1 member');
+    expect(i18n.t('podChat.header.members', { lng: 'en', count: 2 })).toBe('2 members');
+    expect(i18n.t('podChat.header.members', { lng: 'zh-CN', count: 1 })).toBe('1名成员');
   });
 
   it('uses the singular agent count in the Your Team header', () => {
diff --git a/frontend/src/i18n/locales/en.json b/frontend/src/i18n/locales/en.json
index 3dbd8b52a5..7a21f26eaa 100644
--- a/frontend/src/i18n/locales/en.json
+++ b/frontend/src/i18n/locales/en.json
@@ -648,9 +648,7 @@
       "agents_one": "{{count}} agent",
       "agents_other": "{{count}} agents",
       "boardOpen": "board {{count}} open",
-      "backToPods": "Back to pods",
-      "compactMeta": "{{members}} · {{agents}}",
-      "compactMetaAccessible": "{{members}}, {{agents}}"
+      "backToPods": "Back to pods"
     },
     "team": {
       "view": "View pod team",
diff --git a/frontend/src/i18n/locales/zh-CN.json b/frontend/src/i18n/locales/zh-CN.json
index 4755445bb2..930ec558fa 100644
--- a/frontend/src/i18n/locales/zh-CN.json
+++ b/frontend/src/i18n/locales/zh-CN.json
@@ -647,9 +647,7 @@
       "agents_one": "{{count}}个智能体",
       "agents_other": "{{count}}个智能体",
       "boardOpen": "看板{{count}}项待办",
-      "backToPods": "返回 Pod 列表",
-      "compactMeta": "{{members}} · {{agents}}",
-      "compactMetaAccessible": "{{members}}，{{agents}}"
+      "backToPods": "返回 Pod 列表"
     },
     "team": {
       "view": "查看 Pod 团队",
diff --git a/frontend/src/v2/__tests__/V2AgentBYOHostedOffer.test.tsx b/frontend/src/v2/__tests__/V2AgentBYOHostedOffer.test.tsx
index e1f8fb243c..ca87d134bc 100644
--- a/frontend/src/v2/__tests__/V2AgentBYOHostedOffer.test.tsx
+++ b/frontend/src/v2/__tests__/V2AgentBYOHostedOffer.test.tsx
@@ -207,7 +207,7 @@ test('"Run it here" exposure is counted on first paint, once, and a pick counts
   fireEvent.click(screen.getByTestId('byo-mode-hosted'));
   expect(offerEvents()).toEqual([{ step: 'hosted-offer-shown' }, { step: 'hosted-offer-clicked' }]);
 });
-test('the compact hosted form counts its submit as a click, and the compact BYO form counts no offer', async () => {
+test('the compact hosted form counts its submit as a click', async () => {
   window.history.pushState({}, '', '/v2/agents/byo?mode=hosted');
   renderPage();
   await waitFor(() => expect(document.querySelector('[data-testid="byo-hosted-compact"] .v2-byo__submit')).not.toBeNull());
@@ -216,3 +216,15 @@ test('the compact hosted form counts its submit as a click, and the compact BYO
   fireEvent.click(document.querySelector('[data-testid="byo-hosted-compact"] .v2-byo__submit'));
   expect(offerEvents()).toEqual([{ step: 'hosted-offer-shown' }, { step: 'hosted-offer-clicked' }]);
 });
+test('the compact BYO form counts no offer, and Other ways counts the exposure once the form is left', async () => {
+  window.history.pushState({}, '', '/v2/agents/byo?from=card&name=sam-claude');
+  renderPage();
+  await waitFor(() => expect(screen.getByTestId('byo-card-other-ways')).toBeInTheDocument());
+  // The instance's hosting answer must land before the no-offer check means anything.
+  await waitFor(() => expect(axios.get).toHaveBeenCalledWith(expect.stringContaining('/api/hosted/availability'), expect.anything()));
+  for (let i = 0; i < 5; i += 1) await act(async () => {});
+  expect(offerEvents()).toEqual([]);
+  fireEvent.click(screen.getByTestId('byo-card-other-ways'));
+  await waitFor(() => expect(offerEvents()).toEqual([{ step: 'hosted-offer-shown' }]));
+  window.history.pushState({}, '', '/');
+});
diff --git a/frontend/src/v2/__tests__/V2Composer.test.tsx b/frontend/src/v2/__tests__/V2Composer.test.tsx
index d728f06ad2..74220a3e28 100644
--- a/frontend/src/v2/__tests__/V2Composer.test.tsx
+++ b/frontend/src/v2/__tests__/V2Composer.test.tsx
@@ -99,8 +99,7 @@ describe('V2Composer send button', () => {
     const meta = header.querySelector('.v2-pod-header__meta:not(.v2-pod-header__meta--compact)');
     expect(meta).toHaveTextContent('2 members');
     expect(meta).toHaveTextContent('1 agent');
-    expect(header.querySelector('.v2-pod-header__meta--compact')).toHaveTextContent('2 · 1 agent');
-    expect(view.getByRole('group', { name: '2 members, 1 agent' })).toBeInTheDocument();
+    expect(header.querySelector('.v2-pod-header__meta--compact')).toHaveTextContent('2 members');
     expect(view.container.querySelector('.v2-thread__working')).toBeNull();
   });
 
diff --git a/frontend/src/v2/__tests__/V2ThreadStarter.test.tsx b/frontend/src/v2/__tests__/V2ThreadStarter.test.tsx
index 3042133474..43e6c69926 100644
--- a/frontend/src/v2/__tests__/V2ThreadStarter.test.tsx
+++ b/frontend/src/v2/__tests__/V2ThreadStarter.test.tsx
@@ -117,15 +117,16 @@ describe('V2Thread teaching empty states', () => {
     expect(document.querySelector('.v2-teammate')).toBeNull();
   });
 
-  test('compact header shows singular agents and names both counts for assistive tech', () => {
+  test('compact header shows the member count; the agent count stays in the desktop meta', () => {
     const detail = makeDetail({
       agents: [{ agentName: 'openclaw', instanceId: 'aria', displayName: 'Aria' }],
     });
     renderChat(detail);
 
-    const compact = screen.getByRole('group', { name: '1 member, 1 agent' });
-    expect(compact).toHaveTextContent('1 · 1 agent');
-    expect(compact.querySelector('[aria-hidden="true"]')).toHaveTextContent('1 · 1 agent');
+    const compact = document.querySelector('.v2-pod-header__meta--compact');
+    expect(compact).toHaveTextContent('1 member');
+    expect(compact).not.toHaveTextContent('agent');
+    expect(document.querySelector('.v2-pod-header__meta:not(.v2-pod-header__meta--compact)')).toHaveTextContent('1 agent');
   });
 
   test('multi-member regular pods use the same teaching state', () => {
diff --git a/frontend/src/v2/__tests__/v2-copy-budget.test.tsx b/frontend/src/v2/__tests__/v2-copy-budget.test.tsx
index 0882d042a7..33d0f12f25 100644
--- a/frontend/src/v2/__tests__/v2-copy-budget.test.tsx
+++ b/frontend/src/v2/__tests__/v2-copy-budget.test.tsx
@@ -50,7 +50,7 @@ describe('page head copy budget', () => {
     expect(css).toContain('.v2-thread__title-line { display: flex; flex-wrap: wrap; align-items: center; }');
     expect(css).toContain('.v2-thread__title-line .v2-hint__content { width: 100%; flex-basis: 100%; order: 1; }');
     expect(css).toMatch(/\.v2-pod-header \.v2-thread__header-row \{[^}]*padding: 11px 0;[^}]*align-items: flex-start;/);
-    expect(css).toContain('.v2-pod-header__meta.v2-pod-header__meta--compact { display: flex; min-height: 28px; }');
+    expect(css).toContain('.v2-pod-header__meta.v2-pod-header__meta--compact { display: flex; min-height: 28px; flex: 0 0 auto; white-space: nowrap; }');
     expect(css).toContain('box-shadow: var(--v2-focus-ring);');
   });
 });
diff --git a/frontend/src/v2/__tests__/v2-layout-invariants.test.ts b/frontend/src/v2/__tests__/v2-layout-invariants.test.ts
index 48bb48d98e..327a8c375f 100644
--- a/frontend/src/v2/__tests__/v2-layout-invariants.test.ts
+++ b/frontend/src/v2/__tests__/v2-layout-invariants.test.ts
@@ -1554,6 +1554,10 @@ describe('v2 layout invariants (CSS rule presence)', () => {
     expect(compactMeta).toBeGreaterThan(-1);
     expect(ruleBody(v2, '.v2-pod-header__meta')).toContain('display: flex');
     expect(compactMeta).toBeGreaterThan(baseMeta);
+    // TASK-647 item 3: the phone line keeps the board link, with a 44px hit
+    // area drawn as a pseudo-element so the 28px meta row does not grow.
+    expect(ruleBody(v2, 'button.v2-pod-header__board--compact::before')).toContain('inset: -14px -10px');
+    expect(ruleBody(v2, '.v2-thread__title-line > h1')).toContain('max-width: calc(100% - 36px)');
     expect(v2).not.toContain('.v2-thread__working');
   });
 
@@ -2884,7 +2888,7 @@ describe('v2 layout invariants (CSS rule presence)', () => {
       // row under Scout's message, in the slot the delivery cue and the
       // no-agent row share, so they land on the message text column too.
       expect(threadMessages).toContain('className="v2-chat__starts"');
-      expect(threadMessages).toContain('className="v2-chat__start"');
+      expect(threadMessages).toContain('v2-chat__start${start.action === WELCOME_HOSTED_ACTION ? \' v2-chat__start--primary\' : \'\'}');
       // The 44px phone minimum must come AFTER the 32px base in the sheet: at
       // equal specificity the later rule wins, and a base rule placed after
       // the media block would silently render 32 on a phone.
diff --git a/frontend/src/v2/components/V2AgentBYO.tsx b/frontend/src/v2/components/V2AgentBYO.tsx
index 0375afc34d..d7571f97ab 100644
--- a/frontend/src/v2/components/V2AgentBYO.tsx
+++ b/frontend/src/v2/components/V2AgentBYO.tsx
@@ -1326,8 +1326,9 @@ const V2AgentBYO: React.FC = () => {
           )}
           {nameLookupError && mode === 'byo' && <div className="v2-byo__error">{t('agentByo.errors.nameLookupFailed')} <button type="button" className="v2-byo__link" onClick={() => setNameLookupRetry((n) => n + 1)}>{t('agentByo.actions.retry')}</button></div>}
           {mode === null ? (
-            // Signal §3 not yet: a dashed slot where the act will be, until a
-            // place to run it is chosen.
+            // Signal §3 not yet: a muted line where the act will be, until a
+            // place to run it is chosen. Plain text, not a box, so it can't
+            // read as a dead button (UX Lead, TASK-647 item 1).
             <div className="v2-byo__unchosen" data-testid="byo-mode-unchosen">
               {t('agentByo.actions.chooseFirst')}
             </div>
diff --git a/frontend/src/v2/components/V2Thread.tsx b/frontend/src/v2/components/V2Thread.tsx
index e095a8e636..d49cfa51c2 100644
--- a/frontend/src/v2/components/V2Thread.tsx
+++ b/frontend/src/v2/components/V2Thread.tsx
@@ -1802,12 +1802,18 @@ const V2Thread: React.FC<V2ThreadProps> = ({ detail, firstRunVisible = false, in
                 {pod.description && <V2Hint label={t('podChat.header.aboutPod')}>{pod.description}</V2Hint>}
               </div>
             </div>
-            <span
-              className="v2-pod-header__meta v2-pod-header__meta--compact"
-              role="group"
-              aria-label={t('podChat.header.compactMetaAccessible', { members: memberCountText, agents: agentCountText })}
-            >
-              <span aria-hidden="true">{t('podChat.header.compactMeta', { members: humanMemberCount, agents: agentCountText })}</span>
+            {/* The phone line carries the board link and the member count, the
+                same two facts the desktop meta leads with (TASK-647 item 3). */}
+            <span className="v2-pod-header__meta v2-pod-header__meta--compact">
+              {headerMeta.boardOpen !== null && (
+                <>
+                  <button type="button" className="v2-pod-header__board v2-pod-header__board--compact" onClick={() => navigate(`/v2/pods/${pod._id}/board`)}>
+                    {t('podChat.header.boardOpen', { count: headerMeta.boardOpen })}
+                  </button>
+                  <span className="v2-pod-header__sep" aria-hidden="true">·</span>
+                </>
+              )}
+              <span>{memberCountText}</span>
             </span>
             <span className="v2-pod-header__meta">
               {metaParts.map((part, index) => (
diff --git a/frontend/src/v2/components/V2ThreadMessages.tsx b/frontend/src/v2/components/V2ThreadMessages.tsx
index 31e8d54f8e..7032c7283f 100644
--- a/frontend/src/v2/components/V2ThreadMessages.tsx
+++ b/frontend/src/v2/components/V2ThreadMessages.tsx
@@ -307,7 +307,7 @@ const V2ThreadMessages: React.FC<V2ThreadMessagesProps> = ({
                       <React.Fragment key={start.id}>
                         <button
                           type="button"
-                          className="v2-chat__start"
+                          className={`v2-chat__start${start.action === WELCOME_HOSTED_ACTION ? ' v2-chat__start--primary' : ''}`}
                           disabled={startsDisabled || starting}
                           aria-busy={starting || undefined}
                           onClick={() => onStart(start, String(message.id))}
diff --git a/frontend/src/v2/v2.css b/frontend/src/v2/v2.css
index cdcc9b7a51..2d908d73c4 100644
--- a/frontend/src/v2/v2.css
+++ b/frontend/src/v2/v2.css
@@ -2013,6 +2013,19 @@ body.modern-ui.v2-canvas {
   cursor: default;
 }
 
+/* TASK-647 item 4: the run-hosted start is the screen's one filled action.
+   Keyed on the action in the component, not on its position. */
+.v2-root button.v2-chat__start.v2-chat__start--primary {
+  background: var(--v2-ink);
+  border-color: var(--v2-ink);
+  color: var(--v2-on-ink);
+  font-weight: 600;
+}
+.v2-root button.v2-chat__start.v2-chat__start--primary:hover:not(:disabled) {
+  background: var(--v2-ink-hover);
+  border-color: var(--v2-ink-hover);
+}
+
 /* A line that belongs to the start above it: the hosted start's beta limits,
    or why it could not start. Same slot and size as the delivery hint. */
 .v2-chat__start-note {
@@ -2180,7 +2193,16 @@ body.modern-ui.v2-canvas {
   text-decoration: none;
 }
 
-.v2-root a.v2-first-run__setup:hover,
+.v2-root a.v2-first-run__setup {
+  /* Bordered, not ink: the first-run card keeps one ink action (TASK-647 item 4). */
+  background: var(--v2-surface);
+  border: 1px solid var(--v2-border);
+  color: var(--v2-text-primary);
+}
+.v2-root a.v2-first-run__setup:hover {
+  background: var(--v2-surface-hover);
+  border-color: var(--v2-border-strong);
+}
 .v2-root button.v2-first-run__hello:hover:not(:disabled) {
   background: var(--v2-ink-hover);
   color: var(--v2-on-ink);
@@ -6536,14 +6558,15 @@ body.modern-ui.v2-canvas {
   color: var(--v2-text-primary);
 }
 /* Signal §3 not yet: where the act will be, until a place to run it is
-   chosen. Sized like the submit button it stands in for. */
+   chosen. A muted hint line, not a box: a dashed slot read as a dead button
+   (TASK-647 item 1). */
 .v2-byo__unchosen {
   align-self: flex-start;
-  padding: 10px 18px;
-  border: 1px dashed var(--v2-border-strong);
-  border-radius: var(--v2-radius);
+  padding: 0;
+  border: 0;
   color: var(--v2-text-muted);
-  font-size: 14px;
+  font-size: 13px;
+  line-height: 20px;
 }
 .v2-root button.v2-byo__link {
   /* A text action beside or under a line of copy ("Change", "Other ways to
@@ -11600,7 +11623,10 @@ body.modern-ui.v2-canvas {
 
   .v2-thread__header-row { align-items: center; gap: 8px; }
   .v2-thread__title-line { display: flex; flex-wrap: wrap; align-items: center; }
-  .v2-thread__title h1 { font: 600 15px/20px var(--v2-font); }
+  /* The name takes the free width with a zero basis and truncates, so the
+     "i" hint keeps its place on the line instead of wrapping under it and
+     growing the header (TASK-647 item 3). */
+  .v2-thread__title h1 { font: 600 15px/20px var(--v2-font); flex: 1 1 0; min-width: 0; white-space: nowrap; text-overflow: ellipsis; }
 
   .v2-thread .v2-msg__author,
   .v2-thread .v2-msg__author-btn { font-size: 15px; }
@@ -12074,6 +12100,8 @@ body.modern-ui.v2-canvas {
 
 .v2-root button.v2-pod-header__board:hover { text-decoration: underline; }
 
+
+
 .v2-root button.v2-thread__back { display: none; }
 
 @media (max-width: 760px) {
@@ -12134,7 +12162,18 @@ body.modern-ui.v2-canvas {
     align-items: flex-start;
   }
   .v2-pod-header__meta { display: none; }
-  .v2-pod-header__meta.v2-pod-header__meta--compact { display: flex; min-height: 28px; }
+  .v2-pod-header__meta.v2-pod-header__meta--compact { display: flex; min-height: 28px; flex: 0 0 auto; white-space: nowrap; }
+  /* TASK-647 item 3: the board link keeps a 44px tap target without growing
+     the 28px meta row (the hit area is a pseudo-element), the name keeps room
+     for the "i" hint, and the compact meta sits closer to the link. */
+  .v2-root button.v2-pod-header__board--compact { position: relative; }
+  .v2-root button.v2-pod-header__board--compact::before {
+    content: '';
+    position: absolute;
+    inset: -14px -10px;
+  }
+  .v2-thread__title-line > h1 { max-width: calc(100% - 36px); }
+  .v2-pod-header__meta--compact { gap: 4px; }
 
   .v2-root button.v2-thread__back {
     display: inline-grid;