merge: bring gallery frontend branch up to date with goutamnextflow

goutamnextflow adopts @insignia/iios-messaging-ui (drops the bespoke
messenger/inbox/mail) and adds Org Settings → Integrations. Resolve against
the Smart Gallery work:
- dashboard.tsx: route messenger→MessengerSdk, inbox→InboxSdk, add settings→
  Settings (goutamnextflow) AND keep gallery→SmartGallery (ours). Drop the
  now-deleted Messenger/Inbox imports.
- next.config.ts / package.json: union transpilePackages + deps (keep
  @photo-gallery/sdk + ML deps AND @insignia/iios-messaging-ui).
- dashboard.css: keep both appended blocks (.gal* gallery + .settings-* org
  settings).

Gallery integrates with zero errors. Vendored @photo-gallery/sdk re-synced
(0-diff). Verified: tsc clean + `next build` compiles the whole merged app
(gallery AI routes + dashboard). The new @insignia/iios-messaging-ui private
dep is stubbed locally (see .claude/dev-scripts); it resolves on CI/Vercel.

src/app/dashboard/dashboard.css

@@ -133,6 +133,21 @@
   
   .dash-content { padding: 22px 28px 40px; width: 100%; }
   .sec-title { font-size: 15px; font-weight: 700; margin: 6px 0 14px; }
+
+  /* Host for @insignia/iios-messaging-ui: a fixed-height card that maps the SDK's --miu-* tokens
+     onto the CRM design system, so the drop-in SDK matches the rest of the app. */
+  .dash-root .miu-host { height: 620px; border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
+  .dash-root .miu-host .miu-messenger,
+  .dash-root .miu-host .miu-inbox {
+    --miu-bg: var(--bg);
+    --miu-panel: var(--panel);
+    --miu-panel-2: var(--panel-2);
+    --miu-border: var(--border);
+    --miu-text: var(--text);
+    --miu-muted: var(--muted);
+    --miu-accent: var(--orange);
+    --miu-accent-text: #1a1206;
+  }
   
   /* ---- grid helpers ---- */
   .grid { display: grid; gap: 16px; }
@@ -1217,3 +1232,24 @@
   /* Narrower chrome: a little less top offset, and a smaller floor so short viewports still work. */
   .dash-root .gal { height: calc(100vh - 84px); min-height: 560px; }
 }
+
+  /* ---- Org Settings → Integrations ---- */
+  .dash-root .settings-section { margin-top: 8px; }
+  .dash-root .settings-section-title { font-size: 13px; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
+  .dash-root .settings-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
+  .dash-root .settings-card { border: 1px solid var(--border); background: var(--panel); border-radius: 16px; padding: 18px; display: flex; flex-direction: column; gap: 16px; }
+  .dash-root .settings-card.is-soon { opacity: 0.6; }
+  .dash-root .settings-card-head { display: flex; align-items: flex-start; gap: 12px; }
+  .dash-root .settings-card-ic { flex: 0 0 auto; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: color-mix(in srgb, var(--orange) 14%, transparent); color: var(--orange); }
+  .dash-root .settings-card-titles { flex: 1 1 auto; min-width: 0; }
+  .dash-root .settings-card-name { font-size: 15px; font-weight: 700; color: var(--text); }
+  .dash-root .settings-card-sub { font-weight: 500; color: var(--muted); }
+  .dash-root .settings-card-desc { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
+  .dash-root .settings-card-body { display: flex; flex-direction: column; gap: 12px; }
+  .dash-root .settings-kv { display: grid; gap: 10px; margin: 0; }
+  .dash-root .settings-kv > div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
+  .dash-root .settings-kv > div:last-child { border-bottom: 0; padding-bottom: 0; }
+  .dash-root .settings-kv dt { font-size: 12.5px; color: var(--muted); }
+  .dash-root .settings-kv dd { margin: 0; font-size: 13px; font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; }
+  .dash-root .settings-card-actions { display: flex; gap: 8px; align-items: center; margin-top: 2px; }
+  .dash-root .settings-card-note { font-size: 12px; color: var(--muted); background: var(--panel-2); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; }