diff --git a/src/apps/billboard/mail.py b/src/apps/billboard/mail.py
index 196f97d..98f25a2 100644
--- a/src/apps/billboard/mail.py
+++ b/src/apps/billboard/mail.py
@@ -29,12 +29,18 @@ from apps.lyric.models import get_or_create_mailman, resolve_pronouns
 from apps.lyric.templatetags.lyric_extras import at_handle
 
 
-# Invite prose shown to the invitee. `{handle}` = the owner's `@username`
-# (via at_handle — falls back to truncated email for handle-less owners);
+# Invite prose shown to the invitee. `{handle}` is wrapped in an
+# `<a class="post-attribution">` whose href routes to the owner's per-bud
+# landing page — bud landing page sprint 2026-05-27 replaced the in-Line
+# OK/BYE form-button block w. this navigational anchor. post.html's
+# `safe`-filter branch is gated on `line.author.username == 'mailman'`
+# (alongside 'adman'/'taxman') so the anchor renders as HTML.
+#
 # `{poss}` = the owner's possessive pronoun ("their"/"his"/"her"/…), so the
 # table reads as the owner's. Em dash matches the @taxman "Look!—" house style.
 INVITE_TEMPLATE = (
-    "Listen!—{handle} invites you to {poss} drawing table. "
+    'Listen!—<a class="post-attribution" href="/billboard/buds/{owner_id}/">{handle}</a>'
+    " invites you to {poss} drawing table. "
     "This invite will expire 24h from the time it was extended."
 )
 
@@ -67,6 +73,7 @@ def log_sea_invite(sea_invite):
         post.save(update_fields=["title"])
 
     text = INVITE_TEMPLATE.format(
+        owner_id=owner.id,
         handle=at_handle(owner),
         poss=resolve_pronouns(owner.pronouns)[2],
     )
diff --git a/src/apps/billboard/migrations/0010_budshipnote.py b/src/apps/billboard/migrations/0010_budshipnote.py
new file mode 100644
index 0000000..754c1e3
--- /dev/null
+++ b/src/apps/billboard/migrations/0010_budshipnote.py
@@ -0,0 +1,30 @@
+# Generated by Django 6.0 on 2026-05-28 15:12
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('billboard', '0009_alter_brief_kind_alter_post_kind'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='BudshipNote',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('shoptalk', models.CharField(default='', max_length=160)),
+                ('edited_at', models.DateTimeField(auto_now=True)),
+                ('bud', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='budship_notes_about', to=settings.AUTH_USER_MODEL)),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='budship_notes_written', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'ordering': ('-edited_at',),
+                'unique_together': {('user', 'bud')},
+            },
+        ),
+    ]
diff --git a/src/apps/billboard/models.py b/src/apps/billboard/models.py
index 25506a4..21f766c 100644
--- a/src/apps/billboard/models.py
+++ b/src/apps/billboard/models.py
@@ -260,3 +260,33 @@ def _delete_unsolicited_admin_post_lines(sender, instance, created, **kwargs):
         return
     if instance.post.kind in _SYSTEM_AUTHOR_POST_KINDS and not instance.admin_solicited:
         instance.delete()
+
+
+class BudshipNote(models.Model):
+    """Per-relation personal note about a bud — bud landing page sprint
+    2026-05-27 ([[project-bud-landing-page-sprint]]). One row per
+    (user, bud) pair: the user's own shoptalk about that bud, NEVER
+    visible to the bud. Lazy-created on first shoptalk save so the
+    absence of a row reads as 'never edited' (drives the `.tt-milestone`
+    slot on the My Buds tooltip portal — present when ≥1 edit, absent
+    otherwise)."""
+
+    user = models.ForeignKey(
+        "lyric.User",
+        on_delete=models.CASCADE,
+        related_name="budship_notes_written",
+    )
+    bud = models.ForeignKey(
+        "lyric.User",
+        on_delete=models.CASCADE,
+        related_name="budship_notes_about",
+    )
+    shoptalk = models.CharField(max_length=160, default="")
+    edited_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        unique_together = ("user", "bud")
+        ordering = ("-edited_at",)
+
+    def __str__(self):
+        return f"BudshipNote({self.user_id} → {self.bud_id})"
diff --git a/src/apps/billboard/static/apps/billboard/my-buds-tooltip.js b/src/apps/billboard/static/apps/billboard/my-buds-tooltip.js
new file mode 100644
index 0000000..ec90487
--- /dev/null
+++ b/src/apps/billboard/static/apps/billboard/my-buds-tooltip.js
@@ -0,0 +1,103 @@
+// Row-click → row-lock + tooltip-portal for the My Buds list.
+//
+// Bud landing page sprint 2026-05-27 ([[project-bud-landing-page-sprint]]).
+// Mirrors apps/applets/row-lock.js's lock/unlock state machine, but binds
+// to `.bud-entry` rows (which are NOT `.row-3col`) AND populates the
+// shared `#id_tooltip_portal` from the row's data-tt-* attrs.
+//
+// Click target semantics:
+//   • Click on the inner `<a>` (the `@<handle>` anchor) — let it navigate
+//     to the bud's landing page. NO lock fires.
+//   • Click anywhere else inside `.bud-entry` — lock the row + open the
+//     tooltip portal w. its data-tt-* fields populated.
+//   • Click outside any `.bud-entry` (and outside the portal) — clear.
+//
+// `.tt-milestone` is REMOVED from the DOM (vs. emptied) when the row's
+// `data-tt-milestone` attr is absent so the FT can distinguish "never
+// edited" (slot absent) from "cleared after edit" (slot empty).
+
+(function () {
+    'use strict';
+
+    var _lockedRow = null;
+    var _portal = null;
+    var _milestoneTemplate = null;
+
+    function _clearLock() {
+        if (_lockedRow) {
+            _lockedRow.classList.remove('row-locked');
+            _lockedRow = null;
+        }
+        if (_portal) _portal.classList.remove('active');
+    }
+
+    function _findSlot(name) {
+        if (!_portal) return null;
+        return _portal.querySelector('.tt-' + name);
+    }
+
+    function _populatePortal(row) {
+        if (!_portal) return;
+        var fields = ['title', 'description', 'email', 'shoptalk'];
+        fields.forEach(function (f) {
+            var slot = _findSlot(f);
+            if (slot) slot.textContent = row.dataset['tt' + f.charAt(0).toUpperCase() + f.slice(1)] || '';
+        });
+        // .tt-milestone — absent when never-edited; present (+ populated)
+        // when the row carries data-tt-milestone.
+        var ms = row.dataset.ttMilestone;
+        var existing = _findSlot('milestone');
+        if (ms) {
+            if (!existing) {
+                var span = _milestoneTemplate.cloneNode(true);
+                span.textContent = ms;
+                _portal.appendChild(span);
+            } else {
+                existing.textContent = ms;
+            }
+        } else {
+            if (existing) existing.remove();
+        }
+    }
+
+    function _onClick(e) {
+        // Anchor click — let navigation proceed; no lock/portal.
+        if (e.target.closest('.bud-entry .bud-name a')) {
+            _clearLock();
+            return;
+        }
+        var row = e.target.closest('.bud-entry');
+        if (row) {
+            if (row === _lockedRow) {
+                _clearLock();
+            } else {
+                _clearLock();
+                row.classList.add('row-locked');
+                _lockedRow = row;
+                _populatePortal(row);
+                if (_portal) _portal.classList.add('active');
+            }
+            return;
+        }
+        // Click inside the portal itself — preserve lock.
+        if (_portal && _portal.contains(e.target)) return;
+        _clearLock();
+    }
+
+    function _init() {
+        _portal = document.getElementById('id_tooltip_portal');
+        if (_portal) {
+            // Snapshot the milestone element shape so we can restore it
+            // after a never-edited row removes it.
+            var ms = _portal.querySelector('.tt-milestone');
+            if (ms) _milestoneTemplate = ms.cloneNode(false);
+        }
+        document.addEventListener('click', _onClick);
+    }
+
+    if (document.readyState === 'loading') {
+        document.addEventListener('DOMContentLoaded', _init);
+    } else {
+        _init();
+    }
+}());
diff --git a/src/apps/billboard/tests/integrated/test_mail.py b/src/apps/billboard/tests/integrated/test_mail.py
index b50a025..f3e2321 100644
--- a/src/apps/billboard/tests/integrated/test_mail.py
+++ b/src/apps/billboard/tests/integrated/test_mail.py
@@ -114,6 +114,19 @@ class LogSeaInviteTest(TestCase):
     def test_template_uses_listen_hook(self):
         self.assertTrue(INVITE_TEMPLATE.startswith("Listen!"))
 
+    def test_line_wraps_owner_handle_in_post_attribution_anchor(self):
+        """Bud landing page sprint 2026-05-27 — the inline OK/BYE block
+        migrates onto bud.html; the @mailman Line now carries an
+        `<a class="post-attribution">` around the owner's handle whose
+        href routes to the owner's per-bud landing page."""
+        _, line, _ = log_sea_invite(self.invite)
+        self.assertIn('class="post-attribution"', line.text)
+        self.assertIn(
+            f'href="/billboard/buds/{self.owner.id}/"', line.text,
+        )
+        # The anchor wraps ONLY the at_handle (not the surrounding prose)
+        self.assertIn(">@discoman</a>", line.text)
+
 
 class MailAcceptanceKindTest(TestCase):
     """The new MAIL_ACCEPTANCE kind is registered on both Post + Brief."""
diff --git a/src/apps/billboard/tests/integrated/test_views.py b/src/apps/billboard/tests/integrated/test_views.py
index 02bec10..0456ca5 100644
--- a/src/apps/billboard/tests/integrated/test_views.py
+++ b/src/apps/billboard/tests/integrated/test_views.py
@@ -1140,3 +1140,350 @@ class BillboardAppletMySignTest(TestCase):
         # Middle court has a suit, so the suit-icon `<i>` is present + carries
         # the canonical FA class for the suit (fa-wand-sparkles for BRANDS etc).
         self.assertTrue(any(cls.startswith("fa-") for cls in (icon.get("class") or "").split()))
+
+
+# ── Per-bud Landing Page ─────────────────────────────────────────────────
+# /billboard/buds/<uuid:bud_id>/ + the my_buds row enrichment that surfaces
+# the new tooltip-portal data — bud landing page sprint 2026-05-27 (see
+# [[project-bud-landing-page-sprint]]). Replaces the @mailman invite Line's
+# inline OK/BYE block w. a dedicated page; the My Buds list rows now wrap
+# the `@<handle>` in an anchor to the bud's page + carry data-tt-* attrs
+# the JS portal reads on row-lock click.
+
+
+class BudPageRenderTest(TestCase):
+    def setUp(self):
+        self.user = User.objects.create(email="me@buds.io", username="me")
+        self.alice = User.objects.create(email="alice@buds.io", username="alice")
+        self.user.buds.add(self.alice)
+        self.client.force_login(self.user)
+
+    def test_requires_login(self):
+        self.client.logout()
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertEqual(response.status_code, 302)
+
+    def test_returns_200(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertEqual(response.status_code, 200)
+
+    def test_uses_bud_template(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertTemplateUsed(response, "apps/billboard/bud.html")
+
+    def test_passes_bud_in_context(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertEqual(response.context["bud"], self.alice)
+
+    def test_passes_empty_shoptalk_when_no_note(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertEqual(response.context["shoptalk_text"], "")
+        self.assertIsNone(response.context["milestone_dt"])
+
+    def test_header_renders_at_handle_the_title_and_email(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        body = response.content.decode()
+        self.assertIn("@alice", body)
+        self.assertIn("the Earthman", body)
+        self.assertIn("alice@buds.io", body)
+
+    def test_shoptalk_textarea_carries_160_char_maxlength(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        body = response.content.decode()
+        self.assertRegex(
+            body, r'<textarea[^>]+id="id_shoptalk"[^>]*maxlength="160"',
+        )
+
+    def test_existing_shoptalk_renders_in_textarea(self):
+        from apps.billboard.models import BudshipNote
+        BudshipNote.objects.create(
+            user=self.user, bud=self.alice, shoptalk="loves chess",
+        )
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertEqual(response.context["shoptalk_text"], "loves chess")
+        self.assertIsNotNone(response.context["milestone_dt"])
+        self.assertContains(response, "loves chess")
+
+
+class BudPageAutoAddOnFirstVisitTest(TestCase):
+    """Visiting bud.html for a non-bud auto-adds them to the user's buds —
+    mirrors share_post's implicit-add posture so the @mailman post-
+    attribution anchor lands the inviter on the user's buds graph."""
+
+    def setUp(self):
+        self.user = User.objects.create(email="me@auto.io", username="me")
+        self.alice = User.objects.create(email="alice@auto.io", username="alice")
+        # alice is NOT in user.buds — auto-add is the contract
+        self.client.force_login(self.user)
+
+    def test_visit_adds_bud_to_m2m(self):
+        self.assertNotIn(self.alice, list(self.user.buds.all()))
+        self.client.get(reverse("billboard:bud_page", args=[self.alice.id]))
+        self.assertIn(self.alice, list(self.user.buds.all()))
+
+    def test_self_visit_does_not_self_add(self):
+        # Pathological case: navigating to your own bud page must not seed
+        # the user as their own bud (M2M is asymmetric self-FK).
+        self.client.get(reverse("billboard:bud_page", args=[self.user.id]))
+        self.assertNotIn(self.user, list(self.user.buds.all()))
+
+    def test_already_bud_visit_is_idempotent(self):
+        self.user.buds.add(self.alice)
+        self.client.get(reverse("billboard:bud_page", args=[self.alice.id]))
+        # M2M dedup'd; still one row
+        self.assertEqual(self.user.buds.filter(pk=self.alice.pk).count(), 1)
+
+
+class BudPagePendingInviteCascadeTest(TestCase):
+    """`sea_btn_active` + `sea_first_draw_pending` fire iff a non-expired
+    PENDING SeaInvite exists from this bud (owner) to the viewer (invitee).
+    Reuses the same template flags `_burger.html` already reads on my_sea
+    + room — no new template plumbing on bud.html."""
+
+    def setUp(self):
+        from apps.gameboard.models import SeaInvite
+        self.SeaInvite = SeaInvite
+        self.user = User.objects.create(email="me@inv.io", username="me")
+        self.alice = User.objects.create(email="alice@inv.io", username="alice")
+        self.user.buds.add(self.alice)
+        self.client.force_login(self.user)
+
+    def test_no_invite_no_cascade(self):
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertIsNone(response.context["pending_invite"])
+        self.assertFalse(response.context["sea_btn_active"])
+        self.assertFalse(response.context["sea_first_draw_pending"])
+
+    def test_pending_invite_lights_cascade(self):
+        self.SeaInvite.objects.create(
+            owner=self.alice,
+            invitee=self.user,
+            invitee_email=self.user.email,
+            status=self.SeaInvite.PENDING,
+        )
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertIsNotNone(response.context["pending_invite"])
+        self.assertTrue(response.context["sea_btn_active"])
+        self.assertTrue(response.context["sea_first_draw_pending"])
+
+    def test_accepted_invite_does_not_cascade(self):
+        self.SeaInvite.objects.create(
+            owner=self.alice,
+            invitee=self.user,
+            invitee_email=self.user.email,
+            status=self.SeaInvite.ACCEPTED,
+        )
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertIsNone(response.context["pending_invite"])
+        self.assertFalse(response.context["sea_btn_active"])
+
+    def test_expired_pending_invite_does_not_cascade(self):
+        inv = self.SeaInvite.objects.create(
+            owner=self.alice,
+            invitee=self.user,
+            invitee_email=self.user.email,
+            status=self.SeaInvite.PENDING,
+        )
+        self.SeaInvite.objects.filter(pk=inv.pk).update(
+            created_at=timezone.now() - timezone.timedelta(hours=48),
+        )
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertIsNone(response.context["pending_invite"])
+        self.assertFalse(response.context["sea_btn_active"])
+
+    def test_invite_for_other_invitee_ignored(self):
+        # Pending invite from alice → some other user is irrelevant to ME.
+        other = User.objects.create(email="other@inv.io", username="other")
+        self.SeaInvite.objects.create(
+            owner=self.alice,
+            invitee=other,
+            invitee_email=other.email,
+            status=self.SeaInvite.PENDING,
+        )
+        response = self.client.get(
+            reverse("billboard:bud_page", args=[self.alice.id])
+        )
+        self.assertIsNone(response.context["pending_invite"])
+
+
+class SaveBudShoptalkViewTest(TestCase):
+    def setUp(self):
+        self.user = User.objects.create(email="me@sav.io", username="me")
+        self.alice = User.objects.create(email="alice@sav.io", username="alice")
+        self.user.buds.add(self.alice)
+        self.client.force_login(self.user)
+
+    def test_post_creates_budship_note(self):
+        from apps.billboard.models import BudshipNote
+        self.client.post(
+            reverse("billboard:save_bud_shoptalk", args=[self.alice.id]),
+            {"shoptalk": "first thoughts"},
+        )
+        bn = BudshipNote.objects.get(user=self.user, bud=self.alice)
+        self.assertEqual(bn.shoptalk, "first thoughts")
+
+    def test_post_updates_existing_budship_note(self):
+        from apps.billboard.models import BudshipNote
+        BudshipNote.objects.create(user=self.user, bud=self.alice, shoptalk="old")
+        self.client.post(
+            reverse("billboard:save_bud_shoptalk", args=[self.alice.id]),
+            {"shoptalk": "new"},
+        )
+        bn = BudshipNote.objects.get(user=self.user, bud=self.alice)
+        self.assertEqual(bn.shoptalk, "new")
+
+    def test_post_caps_at_160_chars(self):
+        from apps.billboard.models import BudshipNote
+        self.client.post(
+            reverse("billboard:save_bud_shoptalk", args=[self.alice.id]),
+            {"shoptalk": "a" * 300},
+        )
+        bn = BudshipNote.objects.get(user=self.user, bud=self.alice)
+        self.assertLessEqual(len(bn.shoptalk), 160)
+
+    def test_get_returns_405(self):
+        response = self.client.get(
+            reverse("billboard:save_bud_shoptalk", args=[self.alice.id])
+        )
+        self.assertEqual(response.status_code, 405)
+
+    def test_requires_login(self):
+        self.client.logout()
+        response = self.client.post(
+            reverse("billboard:save_bud_shoptalk", args=[self.alice.id]),
+            {"shoptalk": "anon"},
+        )
+        self.assertEqual(response.status_code, 302)
+
+
+class DeleteBudViewTest(TestCase):
+    def setUp(self):
+        self.user = User.objects.create(email="me@del.io", username="me")
+        self.alice = User.objects.create(email="alice@del.io", username="alice")
+        self.user.buds.add(self.alice)
+        self.client.force_login(self.user)
+
+    def test_post_removes_bud_from_m2m(self):
+        self.client.post(
+            reverse("billboard:delete_bud", args=[self.alice.id])
+        )
+        self.assertNotIn(self.alice, list(self.user.buds.all()))
+
+    def test_post_redirects_to_my_buds(self):
+        response = self.client.post(
+            reverse("billboard:delete_bud", args=[self.alice.id])
+        )
+        self.assertRedirects(response, reverse("billboard:my_buds"))
+
+    def test_get_does_not_remove(self):
+        self.client.get(reverse("billboard:delete_bud", args=[self.alice.id]))
+        self.assertIn(self.alice, list(self.user.buds.all()))
+
+
+class MyBudsRowEnrichmentTest(TestCase):
+    """The my_buds page row now carries the data-tt-* attrs the tooltip
+    portal reads on row-lock click, plus an anchor wrapping the handle
+    that routes to the bud's landing page."""
+
+    def setUp(self):
+        self.user = User.objects.create(email="me@row.io", username="me")
+        self.alice = User.objects.create(email="alice@row.io", username="alice")
+        self.user.buds.add(self.alice)
+        self.client.force_login(self.user)
+
+    def test_row_carries_data_bud_id(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        self.assertContains(response, f'data-bud-id="{self.alice.id}"')
+
+    def test_row_carries_tt_title_description_email_attrs(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        self.assertContains(response, 'data-tt-title="@alice"')
+        self.assertContains(response, 'data-tt-description="Earthman"')
+        self.assertContains(response, 'data-tt-email="alice@row.io"')
+
+    def test_row_renders_at_handle_the_title(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        body = response.content.decode()
+        self.assertIn("@alice", body)
+        self.assertIn("the Earthman", body)
+
+    def test_username_wrapped_in_anchor_to_bud_page(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        body = response.content.decode()
+        bud_page_url = reverse("billboard:bud_page", args=[self.alice.id])
+        self.assertRegex(
+            body,
+            rf'<span class="bud-name"><a[^>]*href="{bud_page_url}"',
+        )
+
+    def test_row_carries_shoptalk_when_set(self):
+        from apps.billboard.models import BudshipNote
+        BudshipNote.objects.create(
+            user=self.user, bud=self.alice, shoptalk="dragonkin",
+        )
+        response = self.client.get(reverse("billboard:my_buds"))
+        self.assertContains(response, 'data-tt-shoptalk="dragonkin"')
+        self.assertContains(response, "data-tt-milestone=")
+
+    def test_row_carries_empty_shoptalk_attr_when_never_edited(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        self.assertContains(response, 'data-tt-shoptalk=""')
+
+    def test_row_omits_milestone_when_no_note(self):
+        response = self.client.get(reverse("billboard:my_buds"))
+        body = response.content.decode()
+        self.assertNotIn("data-tt-milestone=", body)
+
+
+class BudshipNoteModelTest(TestCase):
+    """`BudshipNote(user, bud, shoptalk, edited_at)` — per-relation note."""
+
+    def setUp(self):
+        self.user = User.objects.create(email="me@m.io", username="me")
+        self.bud = User.objects.create(email="b@m.io", username="b")
+
+    def test_unique_per_user_bud_pair(self):
+        from django.db import IntegrityError
+        from apps.billboard.models import BudshipNote
+        BudshipNote.objects.create(user=self.user, bud=self.bud, shoptalk="x")
+        with self.assertRaises(IntegrityError):
+            BudshipNote.objects.create(user=self.user, bud=self.bud, shoptalk="y")
+
+    def test_edited_at_updates_on_save(self):
+        from apps.billboard.models import BudshipNote
+        bn = BudshipNote.objects.create(
+            user=self.user, bud=self.bud, shoptalk="first",
+        )
+        first_ts = bn.edited_at
+        bn.shoptalk = "second"
+        bn.save()
+        self.assertGreaterEqual(bn.edited_at, first_ts)
+
+    def test_shoptalk_max_length_160(self):
+        from apps.billboard.models import BudshipNote
+        f = BudshipNote._meta.get_field("shoptalk")
+        self.assertEqual(f.max_length, 160)
diff --git a/src/apps/billboard/urls.py b/src/apps/billboard/urls.py
index 47be175..1663d7a 100644
--- a/src/apps/billboard/urls.py
+++ b/src/apps/billboard/urls.py
@@ -23,6 +23,9 @@ urlpatterns = [
     path("my-buds/", views.my_buds, name="my_buds"),
     path("buds/add", views.add_bud, name="add_bud"),
     path("buds/search", views.search_buds, name="search_buds"),
+    path("buds/<uuid:bud_id>/", views.bud_page, name="bud_page"),
+    path("buds/<uuid:bud_id>/shoptalk", views.save_bud_shoptalk, name="save_bud_shoptalk"),
+    path("buds/<uuid:bud_id>/delete", views.delete_bud, name="delete_bud"),
     path("my-sign/", views.my_sign, name="my_sign"),
     path("my-sign/save", views.save_sign, name="save_sign"),
     path("my-sign/clear", views.clear_sign, name="clear_sign"),
diff --git a/src/apps/billboard/views.py b/src/apps/billboard/views.py
index 5e00c26..bca67cb 100644
--- a/src/apps/billboard/views.py
+++ b/src/apps/billboard/views.py
@@ -10,7 +10,7 @@ from django.shortcuts import redirect, render
 from apps.applets.utils import applet_context, apply_applet_toggle
 
 from apps.billboard.forms import ExistingPostLineForm, LineForm
-from apps.billboard.models import Brief, Line, Post
+from apps.billboard.models import Brief, BudshipNote, Line, Post
 from apps.dashboard.views import _PALETTE_DEFS
 from apps.drama.models import GameEvent, Note, ScrollPosition
 from apps.epic.models import Room
@@ -567,12 +567,96 @@ def share_post(request, post_id):
 
 @login_required(login_url="/")
 def my_buds(request):
+    """My Buds page — enriched per-row w. shoptalk + milestone for the
+    tooltip portal (bud landing page sprint 2026-05-27). Attaches
+    `.shoptalk_text` + `.milestone_dt` to each bud User so the row
+    template can render data-tt-* attrs without an extra template tag."""
+    notes_by_bud = {
+        bn.bud_id: bn
+        for bn in BudshipNote.objects.filter(user=request.user)
+    }
+    buds = list(request.user.buds.all().select_related("active_title"))
+    for bud in buds:
+        bn = notes_by_bud.get(bud.id)
+        bud.shoptalk_text = bn.shoptalk if bn else ""
+        bud.milestone_dt = bn.edited_at if bn else None
     return render(request, "apps/billboard/my_buds.html", {
-        "buds": request.user.buds.all(),
+        "buds": buds,
         "page_class": "page-billbuds",
     })
 
 
+# ── Per-bud landing page ───────────────────────────────────────────────────
+# /billboard/buds/<bud_id>/ + shoptalk save + bud delete — see
+# [[project-bud-landing-page-sprint]]. Replaces the @mailman invite Line's
+# inline OK/BYE block w. a dedicated surface; bud.html is also the click
+# target of the My Buds row's `@<handle>` anchor.
+
+@login_required(login_url="/")
+def bud_page(request, bud_id):
+    """Render the per-bud landing page. Auto-adds the bud on first visit
+    (mirrors share_post's implicit-add posture) so following the @mailman
+    post-attribution anchor from an invite Brief grows the buds graph
+    without an explicit add step. Self-visits are no-op for the auto-add
+    branch — users don't accumulate themselves as a bud.
+
+    Cascade context (`sea_btn_active` + `sea_first_draw_pending`) reuses
+    the same template variables `_burger.html` already reads on my_sea +
+    room — server-side conditional renders `glow-handoff` on the burger
+    + `.active` on the sea sub-btn. The flags fire iff a non-expired
+    PENDING SeaInvite exists from this bud to the viewer."""
+    from django.shortcuts import get_object_or_404
+    from apps.gameboard.models import SeaInvite
+    bud = get_object_or_404(User, id=bud_id)
+    if bud != request.user and not request.user.buds.filter(id=bud.id).exists():
+        request.user.buds.add(bud)
+    bn = BudshipNote.objects.filter(user=request.user, bud=bud).first()
+    pending = (
+        SeaInvite.objects
+        .filter(owner=bud, invitee=request.user, status=SeaInvite.PENDING)
+        .order_by("-created_at")
+        .first()
+    )
+    if pending is not None and pending.is_expired:
+        pending = None
+    return render(request, "apps/billboard/bud.html", {
+        "bud":                    bud,
+        "shoptalk_text":          bn.shoptalk if bn else "",
+        "milestone_dt":           bn.edited_at if bn else None,
+        "pending_invite":         pending,
+        "sea_btn_active":         pending is not None,
+        "sea_first_draw_pending": pending is not None,
+        "page_class": "page-billbud",
+    })
+
+
+@login_required(login_url="/")
+def save_bud_shoptalk(request, bud_id):
+    """POST-only — upsert a BudshipNote w. up to 160 chars of shoptalk."""
+    from django.http import HttpResponseNotAllowed
+    from django.shortcuts import get_object_or_404
+    if request.method != "POST":
+        return HttpResponseNotAllowed(["POST"])
+    bud = get_object_or_404(User, id=bud_id)
+    text = (request.POST.get("shoptalk") or "")[:160]
+    BudshipNote.objects.update_or_create(
+        user=request.user, bud=bud,
+        defaults={"shoptalk": text},
+    )
+    return JsonResponse({"ok": True, "shoptalk": text})
+
+
+@login_required(login_url="/")
+def delete_bud(request, bud_id):
+    """POST-only — remove the bud from the user's M2M; redirect to my_buds.
+    GET is a silent no-op redirect (no membership change)."""
+    from django.shortcuts import get_object_or_404
+    if request.method == "POST":
+        bud = get_object_or_404(User, id=bud_id)
+        request.user.buds.remove(bud)
+    return redirect("billboard:my_buds")
+
+
 def _resolve_recipient(raw):
     """Resolve a free-form recipient (email OR username) to a User, or None.
     Email match takes precedence — if the input contains '@' we don't even
diff --git a/src/apps/gameboard/tests/integrated/test_sea_invite_views.py b/src/apps/gameboard/tests/integrated/test_sea_invite_views.py
index 444b77e..19811c8 100644
--- a/src/apps/gameboard/tests/integrated/test_sea_invite_views.py
+++ b/src/apps/gameboard/tests/integrated/test_sea_invite_views.py
@@ -138,8 +138,11 @@ class MySeaInviteAcceptDeclineTest(TestCase):
 
 
 class MySeaInvitePostRenderTest(TestCase):
-    """post.html (A5) — the @mailman invite Line renders OK/BYE for PENDING +
-    a status badge otherwise, all driven by `line.sea_invite.status`."""
+    """post.html — the @mailman invite Line carries a post-attribution
+    anchor around the owner's handle whose href routes to the owner's
+    per-bud landing page. Bud landing page sprint 2026-05-27 ([[project-
+    bud-landing-page-sprint]]) migrated the prior inline OK/BYE/Accepted
+    block onto bud.html; this class pins the new prose contract."""
 
     def setUp(self):
         self.owner = User.objects.create(email="owner@test.io", username="discoman")
@@ -154,26 +157,31 @@ class MySeaInvitePostRenderTest(TestCase):
         self.accept_url = reverse("my_sea_invite_accept", args=[self.invite.id])
         self.decline_url = reverse("my_sea_invite_decline", args=[self.invite.id])
 
-    def test_pending_invite_renders_ok_bye(self):
+    def test_pending_invite_renders_post_attribution_anchor_not_buttons(self):
         content = self.client.get(self.post_url).content.decode()
-        self.assertIn("invite-ok-btn", content)
-        self.assertIn("invite-bye-btn", content)
-        self.assertIn(self.accept_url, content)
-        self.assertIn(self.decline_url, content)
+        # OK/BYE buttons + accept/decline form actions migrated onto bud.html.
+        self.assertNotIn("invite-ok-btn", content)
+        self.assertNotIn("invite-bye-btn", content)
+        self.assertNotIn(self.accept_url, content)
+        self.assertNotIn(self.decline_url, content)
+        # Anchor wraps the owner's handle, routing to their bud landing page.
+        self.assertIn('class="post-attribution"', content)
+        self.assertIn(f"/billboard/buds/{self.owner.id}/", content)
 
-    def test_accepted_invite_renders_badge_not_buttons(self):
+    def test_accepted_invite_renders_no_badge(self):
         self.invite.status = SeaInvite.ACCEPTED
         self.invite.accepted_at = timezone.now()
         self.invite.save()
         content = self.client.get(self.post_url).content.decode()
-        self.assertIn("Accepted", content)
+        # No "Accepted <date>" badge — the sweep is unconditional.
+        self.assertNotIn("invite-badge--accepted", content)
         self.assertNotIn(self.accept_url, content)
 
-    def test_declined_invite_renders_declined_badge(self):
+    def test_declined_invite_renders_no_badge(self):
         self.invite.status = SeaInvite.DECLINED
         self.invite.save()
         content = self.client.get(self.post_url).content.decode()
-        self.assertIn("Declined", content)
+        self.assertNotIn("invite-badge--declined", content)
         self.assertNotIn(self.accept_url, content)
 
     def test_mailman_line_renders_as_system_with_handles(self):
diff --git a/src/core/context_processors.py b/src/core/context_processors.py
index 9def416..68f3c3d 100644
--- a/src/core/context_processors.py
+++ b/src/core/context_processors.py
@@ -4,6 +4,35 @@ def user_palette(request):
     return {"user_palette": "palette-default"}
 
 
+def mail_brief_payload(request):
+    """Inject the user's oldest unread @mailman "Acceptances & rejections"
+    Brief into every authenticated response context — bud landing page
+    sprint 2026-05-27 ([[project-bud-landing-page-sprint]]). The base
+    template renders the payload as a JSON script + auto-fires
+    Brief.showBanner so the slide-down notification surfaces on the next
+    page load regardless of where the invitee lands.
+
+    Marked read by `view_post`'s existing unread-flip on GET of the
+    underlying MAIL_ACCEPTANCE Post — same mark-read contract every other
+    Brief kind already uses."""
+    if not request.user.is_authenticated:
+        return {}
+    from apps.billboard.models import Brief
+    brief = (
+        Brief.objects
+        .filter(
+            owner=request.user,
+            kind=Brief.KIND_MAIL_ACCEPTANCE,
+            is_unread=True,
+        )
+        .order_by("created_at")
+        .first()
+    )
+    if brief is None:
+        return {}
+    return {"mail_brief_payload": brief.to_banner_dict()}
+
+
 def navbar_context(request):
     if not request.user.is_authenticated:
         return {}
diff --git a/src/core/settings.py b/src/core/settings.py
index 4cf3e16..d837853 100644
--- a/src/core/settings.py
+++ b/src/core/settings.py
@@ -105,6 +105,7 @@ TEMPLATES = [
                 'django.contrib.messages.context_processors.messages',
                 'core.context_processors.user_palette',
                 'core.context_processors.navbar_context',
+                'core.context_processors.mail_brief_payload',
             ],
         },
     },
diff --git a/src/functional_tests/test_bill_bud_page.py b/src/functional_tests/test_bill_bud_page.py
new file mode 100644
index 0000000..be12e04
--- /dev/null
+++ b/src/functional_tests/test_bill_bud_page.py
@@ -0,0 +1,276 @@
+"""FT for the per-bud landing page at /billboard/buds/<bud_id>/.
+
+bud.html is the destination of the @mailman-invite cascade (see
+test_bill_mailman_invite_post.py) AND the click target of the
+`@<handle>` anchor on /billboard/my-buds/ (see test_bill_my_buds_tooltip.py).
+It's the singular counterpart of my_buds.html in the same way post.html
+is to my_posts.html.
+
+Spec recap:
+- Page renders all the data the tooltip surfaces (title, description, email,
+  shoptalk, milestone) PLUS a 160-char `<textarea>` so the user can edit
+  the shoptalk in place. Save persists to a per-relationship BudshipNote.
+- 4-button apparatus from my_sea.html: kit / bud / gear / burger.
+- The bud `#id_bud_btn` opens but its OK button is disabled (.btn-disabled + ×).
+- Gear menu = NVM (→ my_buds) + DEL (→ shared guard portal "Delete this bud?";
+  DEL deletes the M2M edge, NVM dismisses the portal).
+- Burger fan: 5 sub-btns default to inactive (.fa-ban icon, no .active class).
+- Invite-cascade: if the bud has a PENDING SeaInvite where invitee=me,
+    • #id_burger_btn carries .glow-handoff (machine cascade from my_sea.html);
+    • #id_sea_btn in the fan is .active;
+    • clicking the glowing #id_sea_btn navigates to the bud's my-sea page
+      AND clears .glow-handoff but PRESERVES .active.
+- Visiting bud.html for an inviter who isn't yet in my buds auto-adds them.
+"""
+from selenium.webdriver.common.by import By
+
+from apps.gameboard.models import SeaInvite
+from apps.lyric.models import User
+
+from .base import FunctionalTest
+
+
+class BudPageRenderTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_page_header_reads_at_handle_the_title(self):
+        """Same `@alice the Earthman` framing as the my_buds row, hoisted
+        into the page header so the user sees who they're on the page of."""
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        header = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".bud-page-header"
+        ))
+        self.assertIn("@alice the Earthman", header.text)
+        self.assertIn("alice@test.io", header.text)
+
+    def test_shoptalk_textarea_renders_with_160_char_maxlength(self):
+        textarea = self.wait_for(lambda: self._open_and_find_textarea())
+        self.assertEqual(textarea.get_attribute("maxlength"), "160")
+        self.assertEqual(textarea.get_attribute("value") or "", "")
+
+    def _open_and_find_textarea(self):
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        return self.browser.find_element(By.ID, "id_shoptalk")
+
+
+class BudPageFourButtonApparatusTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+
+    def test_all_four_apparatus_buttons_present(self):
+        """kit / bud / gear / burger — same 4-btn slate as my_sea.html.
+        kit_btn is included via base.html so we don't need to render it
+        specially on bud.html."""
+        for btn_id in ("id_kit_btn", "id_bud_btn", "id_burger_btn"):
+            self.wait_for(lambda bid=btn_id: self.browser.find_element(By.ID, bid))
+        # Gear btn is rendered via the shared _gear.html partial — class-
+        # only, not an id. Disambiguate by data-menu-target.
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".gear-btn[data-menu-target='id_bud_menu']"
+        ))
+
+    def test_bud_btn_panel_ok_is_disabled_and_shows_times(self):
+        """Per-spec stub: the bud-on-bud OK btn is intentionally disabled
+        for now (.btn-disabled + `×`). Wired later when the bud-of-bud
+        flow exists. Slap-on stub avoids removing the apparatus."""
+        btn = self.wait_for(lambda: self.browser.find_element(By.ID, "id_bud_btn"))
+        btn.click()
+        ok = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_bud_panel .btn"
+        ))
+        self.assertIn("btn-disabled", ok.get_attribute("class") or "")
+        self.assertEqual(ok.text.strip(), "×")
+
+    def test_burger_fan_all_five_subbtns_inactive_by_default(self):
+        """Fresh load (no pending SeaInvite to me) → every sub-btn renders
+        WITHOUT .active. The visible icon for each sub-btn is .fa-ban (the
+        `--off` half); the `--on` icon stays hidden by CSS until .active."""
+        burger = self.browser.find_element(By.ID, "id_burger_btn")
+        burger.click()
+        self.wait_for(lambda: self.assertEqual(
+            self.browser.find_element(By.ID, "id_burger_fan").get_attribute("aria-hidden"),
+            "false",
+        ))
+        fan_btns = self.browser.find_elements(By.CSS_SELECTOR, "#id_burger_fan .burger-fan-btn")
+        self.assertEqual(len(fan_btns), 5)
+        for b in fan_btns:
+            cls = b.get_attribute("class") or ""
+            self.assertNotIn("active", cls.split())
+
+
+class BudPageGearMenuTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+
+    def test_gear_nvm_navigates_back_to_my_buds(self):
+        self.browser.find_element(
+            By.CSS_SELECTOR, ".gear-btn[data-menu-target='id_bud_menu']"
+        ).click()
+        nvm = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_bud_menu .btn-cancel"
+        ))
+        self.assertEqual(nvm.text.strip(), "NVM")
+        nvm.click()
+        self.wait_for(lambda: self.assertIn(
+            "/billboard/my-buds/", self.browser.current_url
+        ))
+
+    def test_gear_del_opens_guard_portal_with_delete_this_bud_message(self):
+        self.browser.find_element(
+            By.CSS_SELECTOR, ".gear-btn[data-menu-target='id_bud_menu']"
+        ).click()
+        del_btn = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_bud_menu .btn-danger"
+        ))
+        self.assertEqual(del_btn.text.strip(), "DEL")
+        del_btn.click()
+        portal = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_guard_portal.active"
+        ))
+        self.assertIn(
+            "Delete this bud?",
+            portal.find_element(By.CSS_SELECTOR, ".guard-message").text,
+        )
+
+    def test_guard_del_removes_bud_from_m2m_and_navigates_away(self):
+        self.browser.find_element(
+            By.CSS_SELECTOR, ".gear-btn[data-menu-target='id_bud_menu']"
+        ).click()
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_bud_menu .btn-danger"
+        )).click()
+        # Guard portal: DEL = .guard-yes, NVM = .guard-no.
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_guard_portal.active .guard-yes"
+        )).click()
+        self.wait_for(lambda: self.assertIn(
+            "/billboard/my-buds/", self.browser.current_url
+        ))
+        self.assertNotIn(self.alice, list(self.gamer.buds.all()))
+
+    def test_guard_nvm_dismisses_portal_without_navigating_or_deleting(self):
+        self.browser.find_element(
+            By.CSS_SELECTOR, ".gear-btn[data-menu-target='id_bud_menu']"
+        ).click()
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_bud_menu .btn-danger"
+        )).click()
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_guard_portal.active .guard-no"
+        )).click()
+        # Portal closes; bud is still in M2M; we're still on the bud page.
+        self.wait_for(lambda: self.assertNotIn(
+            "active",
+            self.browser.find_element(By.ID, "id_guard_portal").get_attribute("class") or "",
+        ))
+        self.assertIn(self.alice, list(self.gamer.buds.all()))
+        self.assertIn(f"/billboard/buds/{self.alice.id}/", self.browser.current_url)
+
+
+class BudPageInviteCascadeTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_no_pending_invite_no_glow_no_sea_active(self):
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        burger = self.wait_for(lambda: self.browser.find_element(By.ID, "id_burger_btn"))
+        self.assertNotIn("glow-handoff", (burger.get_attribute("class") or "").split())
+        burger.click()
+        sea = self.browser.find_element(By.ID, "id_sea_btn")
+        self.assertNotIn("active", (sea.get_attribute("class") or "").split())
+
+    def test_pending_invite_glows_burger_and_seats_sea_btn_active(self):
+        """alice → me PENDING SeaInvite. burger.glow-handoff is rendered
+        server-side (machine cascade — same `glow-handoff` class as the
+        my_sea.html sea_first_draw_pending path)."""
+        SeaInvite.objects.create(
+            owner=self.alice,
+            invitee_email=self.gamer.email,
+            invitee=self.gamer,
+            status=SeaInvite.PENDING,
+        )
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        burger = self.wait_for(lambda: self.browser.find_element(By.ID, "id_burger_btn"))
+        self.assertIn("glow-handoff", (burger.get_attribute("class") or "").split())
+        burger.click()
+        sea = self.wait_for(lambda: self.browser.find_element(By.ID, "id_sea_btn"))
+        self.assertIn("active", (sea.get_attribute("class") or "").split())
+
+    def test_click_glowing_sea_btn_navigates_to_buds_my_sea_and_clears_glow(self):
+        """Click glowing #id_sea_btn → navigates to alice's my-sea spectator
+        page. The .active stays on sea_btn (preserved across pages); the
+        burger's .glow-handoff is consumed by the handoff."""
+        SeaInvite.objects.create(
+            owner=self.alice,
+            invitee_email=self.gamer.email,
+            invitee=self.gamer,
+            status=SeaInvite.PENDING,
+        )
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        self.wait_for(lambda: self.browser.find_element(By.ID, "id_burger_btn")).click()
+        sea = self.wait_for(lambda: self.browser.find_element(By.ID, "id_sea_btn"))
+        sea.click()
+        # Final URL is the bud's my-sea spectator page — exact route TBD
+        # at IT time (likely /gameboard/my-sea/spectate/<owner_id>/ or
+        # /gameboard/my-sea/<owner_id>/). The FT pins the OWNER's id in
+        # the URL so the IT picks a route shape that surfaces it.
+        self.wait_for(lambda: self.assertIn(
+            str(self.alice.id), self.browser.current_url
+        ))
+        self.wait_for(lambda: self.assertIn("my-sea", self.browser.current_url))
+
+
+class BudPageAutoAddOnFirstVisitTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        # NOTE: alice is NOT yet in gamer.buds — visiting bud.html for her
+        # via the post-attribution link should auto-add her.
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_visiting_bud_page_for_non_bud_auto_adds_to_m2m(self):
+        """Per-spec: 'if the inviter wasn't already a bud, navigating there
+        as such automatically adds the bud to the user's bud list.' Same
+        implicit-add posture as share-post → buds.add."""
+        self.assertNotIn(self.alice, list(self.gamer.buds.all()))
+        self.browser.get(
+            self.live_server_url + f"/billboard/buds/{self.alice.id}/"
+        )
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".bud-page-header"
+        ))
+        self.assertIn(self.alice, list(self.gamer.buds.all()))
diff --git a/src/functional_tests/test_bill_mailman_invite_post.py b/src/functional_tests/test_bill_mailman_invite_post.py
new file mode 100644
index 0000000..82e98b7
--- /dev/null
+++ b/src/functional_tests/test_bill_mailman_invite_post.py
@@ -0,0 +1,168 @@
+"""FT for the @mailman "Acceptances & rejections" Post + cross-page Brief
+behaviour after the bud-landing-page sprint refactor.
+
+Pre-sprint: the @mailman invite Line carried inline OK/BYE form buttons
++ an "Accepted <date>" badge (see apps/billboard/_partials/_invite_actions.html).
+Post-sprint: that interaction surface migrates entirely onto bud.html —
+the Line's prose becomes the interactive surface via an
+`<a class="post-attribution">@<owner></a>` inside `span.post-line-text`
+whose href routes to /billboard/buds/<owner_id>/. The bud.html page then
+absorbs the accept/decline + spectator-link flow that used to live in the
+Post.
+
+Spec recap:
+- When the bud has invited the user, a Brief slides down wherever the user
+  is on the site; FYI links to the @mailman Acceptances & rejections Post.
+- The Post's mailman Line contains an `a.post-attribution` around the
+  inviter's handle, href=/billboard/buds/<inviter_id>/.
+- The Line carries NO `.invite-actions` block (OK/BYE/Accepted/etc. removed).
+- Following the post-attribution link auto-adds the inviter to the user's
+  buds list if not already a bud (verified separately in
+  test_bill_bud_page.py::BudPageAutoAddOnFirstVisitTest).
+"""
+from selenium.webdriver.common.by import By
+
+from apps.billboard.mail import log_sea_invite
+from apps.gameboard.models import SeaInvite
+from apps.lyric.models import User, get_or_create_mailman
+
+
+def _create_pending_invite(owner, invitee):
+    """Reusable helper: alice → me PENDING SeaInvite + the @mailman Post +
+    Line + Brief log entry. Mirrors what gameboard.invite-bud would create
+    in real flow; calling log_sea_invite directly avoids dragging the
+    bud-invite POST view into the FT setup."""
+    inv = SeaInvite.objects.create(
+        owner=owner,
+        invitee_email=invitee.email,
+        invitee=invitee,
+        status=SeaInvite.PENDING,
+    )
+    log_sea_invite(inv)
+    return inv
+
+
+from .base import FunctionalTest
+
+
+class MailmanPostStructureTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        get_or_create_mailman()
+        _create_pending_invite(self.alice, self.gamer)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def _navigate_to_mailman_post(self):
+        """Land on the user's @mailman post directly via the my_posts list.
+        Avoids hard-coding the post UUID."""
+        from apps.billboard.models import Post
+        post = Post.objects.get(owner=self.gamer, kind=Post.KIND_MAIL_ACCEPTANCE)
+        self.browser.get(
+            self.live_server_url + f"/billboard/post/{post.id}/"
+        )
+
+    def test_mailman_line_contains_post_attribution_anchor_to_bud_page(self):
+        """span.post-line-text on the @mailman Line wraps the inviter's
+        handle in an <a class="post-attribution"> whose href is the bud
+        landing page for the inviter. Anchor text = the bud's at_handle
+        (e.g. '@alice'); the surrounding prose stays in plain text."""
+        self._navigate_to_mailman_post()
+        line = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".post-line--system"
+        ))
+        anchor = line.find_element(
+            By.CSS_SELECTOR, "span.post-line-text a.post-attribution"
+        )
+        self.assertEqual(anchor.text, "@alice")
+        href = anchor.get_attribute("href")
+        self.assertIn(f"/billboard/buds/{self.alice.id}/", href)
+
+    def test_mailman_line_no_longer_renders_ok_bye_or_accepted_badge(self):
+        """The pre-sprint .invite-actions block is GONE — the entire
+        accept/decline + accepted-date UX migrates onto bud.html. The Line
+        carries prose only."""
+        self._navigate_to_mailman_post()
+        line = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".post-line--system"
+        ))
+        self.assertEqual(
+            line.find_elements(By.CSS_SELECTOR, ".invite-actions"),
+            [],
+        )
+        self.assertEqual(
+            line.find_elements(By.CSS_SELECTOR, ".invite-ok-btn"),
+            [],
+        )
+        self.assertEqual(
+            line.find_elements(By.CSS_SELECTOR, ".invite-bye-btn"),
+            [],
+        )
+        self.assertEqual(
+            line.find_elements(By.CSS_SELECTOR, ".invite-badge--accepted"),
+            [],
+        )
+
+    def test_mailman_line_no_invite_actions_remain_after_invite_accepted(self):
+        """Even if the SeaInvite is in ACCEPTED state, the Line stays prose-
+        only — there's no longer an 'Accepted <date>' badge here (that
+        information surfaces on bud.html instead). Asserts the .invite-
+        actions sweep is unconditional, not just PENDING-only."""
+        SeaInvite.objects.filter(invitee=self.gamer).update(status=SeaInvite.ACCEPTED)
+        self._navigate_to_mailman_post()
+        line = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".post-line--system"
+        ))
+        self.assertEqual(
+            line.find_elements(By.CSS_SELECTOR, ".invite-actions"),
+            [],
+        )
+
+
+class MailmanBriefSurfacesOnAnyPageTest(FunctionalTest):
+    """The Brief spawned by `log_sea_invite` should surface wherever the
+    user lands next — not only on the Post itself. Existing Brief delivery
+    is page-load based (banner injected by the server-rendered template +
+    note.js Brief.showBanner). The FT verifies the cross-page surface by
+    visiting an unrelated page first."""
+
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        get_or_create_mailman()
+        _create_pending_invite(self.alice, self.gamer)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_brief_appears_on_unrelated_page_load(self):
+        """Land on `/` (not the Post itself). The Brief banner should
+        still be present — the invite spawned an unread Brief, which
+        the next page-load surfaces sitewide via the `mail_brief_
+        payload` context processor + base.html auto-showBanner."""
+        self.browser.get(self.live_server_url + "/")
+        banner = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".note-banner"
+        ))
+        self.assertIn(
+            "Acceptances & rejections",
+            banner.find_element(By.CSS_SELECTOR, ".note-banner__title").text,
+        )
+
+    def test_brief_fyi_navigates_to_mailman_post(self):
+        """FYI link on the slide-down banner is the cross-page nav into the
+        Acceptances & rejections Post. Click → land on the Post page."""
+        self.browser.get(self.live_server_url + "/")
+        fyi = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, ".note-banner__fyi"
+        ))
+        fyi.click()
+        # Post URL pattern is /billboard/post/<uuid>/
+        self.wait_for(lambda: self.assertIn(
+            "/billboard/post/", self.browser.current_url
+        ))
+        # And the page is the user's @mailman post (title visible).
+        self.wait_for(lambda: self.assertIn(
+            "Acceptances & rejections",
+            self.browser.find_element(By.CSS_SELECTOR, ".post-title").text,
+        ))
diff --git a/src/functional_tests/test_bill_my_buds_tooltip.py b/src/functional_tests/test_bill_my_buds_tooltip.py
new file mode 100644
index 0000000..04c321d
--- /dev/null
+++ b/src/functional_tests/test_bill_my_buds_tooltip.py
@@ -0,0 +1,140 @@
+"""FT for the My Buds page — line rendering w. donned title + click-lock
+tooltip portal + username <a> link to the per-bud landing page.
+
+Companion to test_bill_my_buds.py (which covers Phase 1 add/render).
+This file covers the My Buds enrichment that lands alongside the new
+apps/billboard/bud.html landing page (see test_bill_bud_page.py).
+
+Spec recap:
+- Each bud row reads `@<handle> the <Title>` (at_handle + active_title_display).
+- Clicking the row applies `.row-locked` to the `li.applet-list-entry` AND
+  opens the shared #id_tooltip_portal w. five fields:
+      .tt-title       → `@<handle>`
+      .tt-description → bud's donned title  ("Earthman" by default)
+      .tt-email       → bud's email (small / italic / 0.75 opacity — CSS)
+      .tt-shoptalk    → the user's personal note about this bud (160-char cap)
+      .tt-milestone   → "edited <relative-ts>"  (omitted when no edit yet)
+- The `@<handle>` itself is an `<a>` element (--terUser by CSS) whose href
+  navigates to the bud's landing page /billboard/buds/<bud_id>/.
+"""
+from selenium.webdriver.common.by import By
+
+from apps.lyric.models import User
+
+from .base import FunctionalTest
+
+
+class MyBudsLineRendersBudTitleTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_bud_entry_reads_at_handle_the_title(self):
+        """Default (no donned Note) → '@alice the Earthman' — active_title_display
+        falls back to 'Earthman' when the bud hasn't donned any Note title.
+        Renders inside .bud-entry; the username span carries the `.bud-name`
+        class for backward compat w. test_bill_my_buds.py."""
+        self.browser.get(self.live_server_url + "/billboard/my-buds/")
+        entry = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, f".bud-entry[data-bud-id='{self.alice.id}']"
+        ))
+        # Full row text combines handle + title
+        self.assertIn("@alice the Earthman", entry.text)
+
+
+class MyBudsClickOpensTooltipPortalTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_click_locks_row_and_opens_tooltip_portal(self):
+        """Click the bud row → li picks up .row-locked AND the shared
+        #id_tooltip_portal becomes .active w. the bud's data populated
+        into .tt-title / .tt-description / .tt-email."""
+        self.browser.get(self.live_server_url + "/billboard/my-buds/")
+        row = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, f".bud-entry[data-bud-id='{self.alice.id}']"
+        ))
+        self.assertNotIn("row-locked", row.get_attribute("class") or "")
+
+        row.click()
+
+        # Row picks up .row-locked
+        self.wait_for(lambda: self.assertIn(
+            "row-locked", row.get_attribute("class") or ""
+        ))
+
+        # Portal slides in active
+        portal = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_tooltip_portal.active"
+        ))
+        # Field assertions — text() suffices; the SCSS rules (italic,
+        # opacity, glow) are out of FT scope.
+        title = portal.find_element(By.CSS_SELECTOR, ".tt-title").text
+        desc  = portal.find_element(By.CSS_SELECTOR, ".tt-description").text
+        email = portal.find_element(By.CSS_SELECTOR, ".tt-email").text
+        self.assertEqual(title, "@alice")
+        self.assertEqual(desc,  "Earthman")
+        self.assertEqual(email, "alice@test.io")
+
+    def test_tooltip_milestone_absent_when_shoptalk_never_edited(self):
+        """`.tt-milestone` renders only when the user has edited the shoptalk
+        for this bud — fresh bud has no BudshipNote row yet, so no edit
+        timestamp exists. The cell should be ABSENT (not empty)."""
+        self.browser.get(self.live_server_url + "/billboard/my-buds/")
+        row = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, f".bud-entry[data-bud-id='{self.alice.id}']"
+        ))
+        row.click()
+        self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_tooltip_portal.active"
+        ))
+        self.assertEqual(
+            self.browser.find_elements(By.CSS_SELECTOR, "#id_tooltip_portal .tt-milestone"),
+            [],
+        )
+
+    def test_tooltip_shoptalk_empty_string_when_never_edited(self):
+        """Shoptalk slot still renders (so the layout slot exists), just
+        with empty body. Distinguishes never-edited (slot empty) from
+        cleared-after-edit (slot empty + .tt-milestone present)."""
+        self.browser.get(self.live_server_url + "/billboard/my-buds/")
+        self.browser.find_element(
+            By.CSS_SELECTOR, f".bud-entry[data-bud-id='{self.alice.id}']"
+        ).click()
+        portal = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR, "#id_tooltip_portal.active"
+        ))
+        # .tt-shoptalk exists but is empty
+        shoptalk = portal.find_element(By.CSS_SELECTOR, ".tt-shoptalk")
+        self.assertEqual(shoptalk.text.strip(), "")
+
+
+class MyBudsUsernameAnchorTest(FunctionalTest):
+    def setUp(self):
+        super().setUp()
+        self.gamer = User.objects.create(email="me@test.io", username="me")
+        self.alice = User.objects.create(email="alice@test.io", username="alice")
+        self.gamer.buds.add(self.alice)
+        self.create_pre_authenticated_session("me@test.io")
+
+    def test_username_inside_row_is_anchor_to_bud_page(self):
+        """The `@alice` text itself is wrapped in an `<a>` element (--terUser
+        per global SCSS); href routes to /billboard/buds/<bud_id>/. The row
+        wrapper still receives clicks for the row-lock + tooltip flow (the
+        anchor is a CHILD of the bud-name span; clicking the row outside
+        the anchor locks; clicking the anchor itself navigates)."""
+        self.browser.get(self.live_server_url + "/billboard/my-buds/")
+        anchor = self.wait_for(lambda: self.browser.find_element(
+            By.CSS_SELECTOR,
+            f".bud-entry[data-bud-id='{self.alice.id}'] .bud-name a",
+        ))
+        self.assertEqual(anchor.text, "@alice")
+        href = anchor.get_attribute("href")
+        self.assertIn(f"/billboard/buds/{self.alice.id}/", href)
diff --git a/src/static_src/scss/_applets.scss b/src/static_src/scss/_applets.scss
index d11f47a..69f73dc 100644
--- a/src/static_src/scss/_applets.scss
+++ b/src/static_src/scss/_applets.scss
@@ -86,6 +86,7 @@
 #id_billboard_applet_menu  { @extend %applet-menu; }
 #id_billscroll_menu        { @extend %applet-menu; }
 #id_my_sea_menu            { @extend %applet-menu; }
+#id_bud_menu               { @extend %applet-menu; }
 
 // Page-level gear buttons — fixed to viewport bottom-right
 .gameboard-page,
@@ -95,7 +96,8 @@
 .post-page,
 .billboard-page,
 .billscroll-page,
-.my-sea-page {
+.my-sea-page,
+.bud-page {
     > .gear-btn {
         position: fixed;
         bottom: 4.2rem;
@@ -112,7 +114,8 @@
 #id_post_menu,
 #id_billboard_applet_menu,
 #id_billscroll_menu,
-#id_my_sea_menu {
+#id_my_sea_menu,
+#id_bud_menu {
     position: fixed;
     bottom: 6.6rem;
     right: 1rem;
@@ -137,7 +140,8 @@
     .post-page > .gear-btn,
     .billboard-page > .gear-btn,
     .billscroll-page > .gear-btn,
-    .my-sea-page > .gear-btn {
+    .my-sea-page > .gear-btn,
+    .bud-page > .gear-btn {
         top: 0.5rem;
         bottom: auto;
         right: 4.2rem;
@@ -151,7 +155,8 @@
     #id_post_menu,
     #id_billboard_applet_menu,
     #id_billscroll_menu,
-    #id_my_sea_menu {
+    #id_my_sea_menu,
+    #id_bud_menu {
         position: fixed;
         top: 2.6rem;
         right: 4.2rem;
diff --git a/src/static_src/scss/_burger.scss b/src/static_src/scss/_burger.scss
index 9a349d6..7a5a644 100644
--- a/src/static_src/scss/_burger.scss
+++ b/src/static_src/scss/_burger.scss
@@ -123,9 +123,15 @@
 }
 
 // Active sub-btn = fully visible; inactive (default) = 0.6 opacity hint.
-// Active conditions are wired one-by-one in later sprints.
+// `z-index: 1` raises the active sub-btn above its inactive siblings so
+// click hit-testing picks the active one even while the fan is mid-
+// transition (during the 0.25s arc-out animation all 5 sub-btns share
+// the fan-centre origin, and a later-in-DOM inactive btn would otherwise
+// obscure the active target). Active conditions are wired one-by-one in
+// later sprints.
 #id_burger_btn.active ~ #id_burger_fan .burger-fan-btn.active {
     opacity: 1;
+    z-index: 1;
 }
 #id_burger_btn.active ~ #id_burger_fan .burger-fan-btn:not(.active) {
     opacity: 0.6;
diff --git a/src/templates/apps/billboard/_partials/_bud_gear.html b/src/templates/apps/billboard/_partials/_bud_gear.html
new file mode 100644
index 0000000..ed9cdc2
--- /dev/null
+++ b/src/templates/apps/billboard/_partials/_bud_gear.html
@@ -0,0 +1,11 @@
+{# Gear menu on bud.html — mirrors apps/billboard/_partials/_post_gear.html. #}
+{# NVM returns to /billboard/my-buds/; DEL opens the shared #id_guard_portal #}
+{# from base.html via the `data-confirm` hook + POSTs to delete_bud.         #}
+<div id="id_bud_menu" style="display:none">
+    <a href="{% url 'billboard:my_buds' %}" class="btn btn-cancel">NVM</a>
+    <form method="POST" action="{% url 'billboard:delete_bud' bud.id %}">
+        {% csrf_token %}
+        <button type="submit" class="btn btn-danger" data-confirm="Delete this bud?">DEL</button>
+    </form>
+</div>
+{% include "apps/applets/_partials/_gear.html" with menu_id="id_bud_menu" %}
diff --git a/src/templates/apps/billboard/_partials/_bud_tooltip.html b/src/templates/apps/billboard/_partials/_bud_tooltip.html
new file mode 100644
index 0000000..7393dbe
--- /dev/null
+++ b/src/templates/apps/billboard/_partials/_bud_tooltip.html
@@ -0,0 +1,13 @@
+{# Shared tooltip-portal markup for the My Buds list. Hidden by default; #}
+{# JS reads data-tt-* attrs from the clicked .bud-entry row, populates   #}
+{# the slots below, and toggles .active. .tt-milestone is removed from   #}
+{# the DOM when no data-tt-milestone attr is present so the FT can       #}
+{# distinguish never-edited from cleared-after-edit (slot absent vs.     #}
+{# present-but-empty).                                                    #}
+<div id="id_tooltip_portal" class="tt">
+    <span class="tt-title"></span>
+    <span class="tt-description"></span>
+    <span class="tt-email"></span>
+    <span class="tt-shoptalk"></span>
+    <span class="tt-milestone"></span>
+</div>
diff --git a/src/templates/apps/billboard/_partials/_my_buds_item.html b/src/templates/apps/billboard/_partials/_my_buds_item.html
index 25080a4..e3a5f65 100644
--- a/src/templates/apps/billboard/_partials/_my_buds_item.html
+++ b/src/templates/apps/billboard/_partials/_my_buds_item.html
@@ -1,4 +1,15 @@
 {% load lyric_extras %}
-<li class="applet-list-entry bud-entry" data-bud-id="{{ item.id }}">
-    <span class="bud-name">{{ item|at_handle }}</span>
+{# My Buds page row — `@<handle> the <Title>` w. anchor on the handle  #}
+{# routing to the bud's landing page + data-tt-* attrs the tooltip     #}
+{# portal reads on row-lock click. `item.shoptalk_text` + `.milestone_ #}
+{# dt` are attached by the my_buds view from BudshipNote.              #}
+<li class="applet-list-entry bud-entry"
+    data-bud-id="{{ item.id }}"
+    data-tt-title="{{ item|at_handle }}"
+    data-tt-description="{{ item.active_title_display }}"
+    data-tt-email="{{ item.email }}"
+    data-tt-shoptalk="{{ item.shoptalk_text|default:'' }}"
+    {% if item.milestone_dt %}data-tt-milestone="edited {{ item.milestone_dt|relative_ts }}"{% endif %}>
+    <span class="bud-name"><a href="{% url 'billboard:bud_page' item.id %}">{{ item|at_handle }}</a></span>
+    <span class="bud-row-title"> the {{ item.active_title_display }}</span>
 </li>
diff --git a/src/templates/apps/billboard/bud.html b/src/templates/apps/billboard/bud.html
new file mode 100644
index 0000000..cdc5a6b
--- /dev/null
+++ b/src/templates/apps/billboard/bud.html
@@ -0,0 +1,85 @@
+{% extends "core/base.html" %}
+{% load static %}
+{% load lyric_extras %}
+
+{% block title_text %}Billbud{% endblock title_text %}
+{% block header_text %}<span>Bill</span><span>bud</span>{% endblock header_text %}
+
+{% block content %}
+{# note.js exposes window.Brief — needed by the auto-fired @mailman Brief #}
+{# when this page is the destination of an invite cascade.                #}
+<script src="{% static 'apps/dashboard/note.js' %}"></script>
+
+<div class="bud-page">
+    <header class="bud-page-header">
+        <h3>{{ bud|at_handle }} the {{ bud.active_title_display }}</h3>
+        <p class="bud-page-email">{{ bud.email }}</p>
+    </header>
+
+    <form id="id_bud_shoptalk_form"
+          method="POST"
+          action="{% url 'billboard:save_bud_shoptalk' bud.id %}"
+          class="bud-shoptalk-form">
+        {% csrf_token %}
+        <label for="id_shoptalk" class="bud-shoptalk-label">Shoptalk</label>
+        <textarea id="id_shoptalk"
+                  name="shoptalk"
+                  maxlength="160"
+                  class="form-control bud-shoptalk-input"
+                  placeholder="Your personal note about this bud…">{{ shoptalk_text }}</textarea>
+    </form>
+
+    {# 4-btn apparatus mirrors my_sea.html: kit (from base.html) + bud + #}
+    {# gear + burger. Apparatus loads bud-btn.js (defines window.        #}
+    {# bindBudBtn — does NOT auto-bind); the inline script below opens   #}
+    {# the panel + stubs OK to disabled per the sprint plan.             #}
+    {% include "apps/billboard/_partials/_bud_apparatus.html" with aria_label="Bud" include_suggestions=False %}
+    <script>
+    (function () {
+        var btn   = document.getElementById('id_bud_btn');
+        var panel = document.getElementById('id_bud_panel');
+        var ok    = document.getElementById('id_bud_ok');
+        if (!btn || !panel || !ok) return;
+        // bud-of-bud flow isn't wired yet — stub OK as disabled w. × text.
+        ok.classList.add('btn-disabled');
+        ok.textContent = '×';
+        ok.setAttribute('disabled', 'disabled');
+        btn.addEventListener('click', function () {
+            var open = document.documentElement.classList.toggle('bud-open');
+            btn.classList.toggle('active', open);
+        });
+        document.addEventListener('keydown', function (e) {
+            if (e.key === 'Escape' && document.documentElement.classList.contains('bud-open')) {
+                document.documentElement.classList.remove('bud-open');
+                btn.classList.remove('active');
+            }
+        });
+    }());
+    </script>
+
+    {% include "apps/billboard/_partials/_bud_gear.html" %}
+
+    {# Burger fan — sea_btn_active + sea_first_draw_pending drive the    #}
+    {# server-side .active / .glow-handoff classes (same vars my_sea +   #}
+    {# room read). burger-btn.js auto-binds on DOMContentLoaded.         #}
+    {% include "apps/gameboard/_partials/_burger.html" %}
+</div>
+
+<script src="{% static 'apps/epic/burger-btn.js' %}"></script>
+{% if pending_invite %}
+<script>
+(function () {
+    var sea = document.getElementById('id_sea_btn');
+    if (!sea) return;
+    // Active sub-btn navigation handler — fires BEFORE burger-btn.js's
+    // delegated fan handler (target-phase before bubble-up) so the click
+    // routes to the bud's spectator my-sea page. Burger then closes the
+    // fan as usual.
+    sea.addEventListener('click', function () {
+        if (!sea.classList.contains('active')) return;
+        window.location.href = '/gameboard/my-sea/visit/{{ bud.id }}/';
+    });
+}());
+</script>
+{% endif %}
+{% endblock content %}
diff --git a/src/templates/apps/billboard/my_buds.html b/src/templates/apps/billboard/my_buds.html
index e498b45..7903f0a 100644
--- a/src/templates/apps/billboard/my_buds.html
+++ b/src/templates/apps/billboard/my_buds.html
@@ -11,6 +11,10 @@
     {% include "apps/applets/_partials/_applet-list-shell.html" with shell_title="My Buds" shell_list_id="id_buds_list" shell_items=buds shell_item_template="apps/billboard/_partials/_my_buds_item.html" shell_empty="No buds yet." %}
 </div>
 
+{# Tooltip portal — populated from .bud-entry data-tt-* attrs on row #}
+{# click. See my-buds-tooltip.js for the bind logic.                #}
+{% include "apps/billboard/_partials/_bud_tooltip.html" %}
+
 {# Bud btn (bottom-left) + slide-out add-bud panel — async POST to add_bud. #}
 {% include "apps/billboard/_partials/_bud_add_panel.html" %}
 {% endblock content %}
@@ -19,4 +23,5 @@
     {# Brief module — needed by _bud_add_panel's OK handler so the         #}
     {# duplicate-add error banner can render via Brief.showDuplicateBanner.#}
     <script src="{% static 'apps/dashboard/note.js' %}"></script>
+    <script src="{% static 'apps/billboard/my-buds-tooltip.js' %}"></script>
 {% endblock scripts %}
diff --git a/src/templates/apps/billboard/post.html b/src/templates/apps/billboard/post.html
index 949cbd5..d12c5ba 100644
--- a/src/templates/apps/billboard/post.html
+++ b/src/templates/apps/billboard/post.html
@@ -41,12 +41,14 @@
         {% for line in post.lines.all %}
             <li class="post-line {% if line.author.username == 'adman' or line.author.username == 'taxman' or line.author.username == 'mailman' %}post-line--system{% endif %}">
                 <span class="post-line-author">{{ line.author|at_handle }}</span>
-                <span class="post-line-text">{# adman / taxman-authored Lines (note unlock, share invite, tax ledger system prose) may carry an `<a class="note-ref">` anchor that needs to render as HTML. User-typed Lines stay escaped. `display_text` strips the `[<iso timestamp>] ` prefix that tax-ledger Lines carry to satisfy `unique_together = (post, text)` — the per-line `created_at` timestamp on the right renders the user-facing moment. #}{% if line.author.username == 'adman' or line.author.username == 'taxman' or line.author.username == 'mailman' %}{{ line.display_text|safe }}{% else %}{{ line.display_text }}{% endif %}</span>
+                <span class="post-line-text">{# adman / taxman / mailman-authored Lines (note unlock, share invite, tax ledger, invite cascade) may carry HTML anchors (note-ref / post-attribution). User-typed Lines stay escaped. `display_text` strips the `[<iso timestamp>] ` prefix that tax-ledger Lines carry to satisfy `unique_together = (post, text)` — the per-line `created_at` timestamp on the right renders the user-facing moment. #}{% if line.author.username == 'adman' or line.author.username == 'taxman' or line.author.username == 'mailman' %}{{ line.display_text|safe }}{% else %}{{ line.display_text }}{% endif %}</span>
                 <time class="post-line-time" datetime="{{ line.created_at|date:'c' }}">{{ line.created_at|relative_ts }}</time>
-                {# @mailman invite Lines carry an OK/BYE action block driven by #}
-                {# the linked SeaInvite's status (my-sea invite flow). Non-invite #}
-                {# system + user Lines have no `sea_invite`, so this is skipped.  #}
-                {% if line.sea_invite %}{% include "apps/billboard/_partials/_invite_actions.html" %}{% endif %}
+                {# Pre-sprint @mailman invite Lines carried an in-line OK/BYE   #}
+                {# block via _invite_actions.html. Bud landing page sprint     #}
+                {# 2026-05-27 migrates that interaction onto bud.html — the    #}
+                {# Line's prose now embeds a post-attribution anchor (see      #}
+                {# apps.billboard.mail.INVITE_TEMPLATE) that routes to the     #}
+                {# owner's bud page where accept/decline/spectator live.       #}
             </li>
         {% endfor %}
         <li class="post-line-buffer" aria-hidden="true"></li>
diff --git a/src/templates/core/base.html b/src/templates/core/base.html
index dbc98ee..bdb7517 100644
--- a/src/templates/core/base.html
+++ b/src/templates/core/base.html
@@ -73,6 +73,24 @@
 
         {% block scripts %}
         {% endblock scripts %}
+        {# Cross-page @mailman Brief surface — bud landing page sprint  #}
+        {# 2026-05-27. Server-side context processor injects mail_      #}
+        {# brief_payload on every authenticated response when the user  #}
+        {# has an unread MAIL_ACCEPTANCE Brief; banner auto-fires here  #}
+        {# (note.js is included by pages that need Brief earlier; this  #}
+        {# loads it if no page-block scripts pulled it in already).     #}
+        {% if mail_brief_payload %}
+            {{ mail_brief_payload|json_script:"id_mail_brief_payload" }}
+            <script src="{% static 'apps/dashboard/note.js' %}"></script>
+            <script>
+            (function () {
+                var el = document.getElementById('id_mail_brief_payload');
+                if (!el || !window.Brief || !Brief.showBanner) return;
+                var payload = JSON.parse(el.textContent || '{}');
+                if (payload && payload.title) Brief.showBanner(payload);
+            }());
+            </script>
+        {% endif %}
         <script>
         // h2 letter splitter — wrap each character of every .row .col-lg-6 h2
         // word-span in its own <span> so .scss can use justify-content: