diff --git a/frontend/packages/dashboard/build.mjs b/frontend/packages/dashboard/build.mjs
index 07097fa..9b7d2a7 100644
--- a/frontend/packages/dashboard/build.mjs
+++ b/frontend/packages/dashboard/build.mjs
@@ -48,6 +48,8 @@ await build({
   logLevel: 'info',
 });
 
-copyFileSync(src('index.html'), dist('index.html'));
+for (const html of ['index.html', 'flow.html']) {
+  copyFileSync(src(html), dist(html));
+}
 
 console.log('dashboard build ok →', dist(''));
diff --git a/frontend/packages/dashboard/src/app.js b/frontend/packages/dashboard/src/app.js
index 71453e3..7560e4d 100644
--- a/frontend/packages/dashboard/src/app.js
+++ b/frontend/packages/dashboard/src/app.js
@@ -74,13 +74,32 @@ window.marked = marked;
     const root = $('side-panel');
     const titleEl = $('side-panel-title');
     const bodyEl = $('side-panel-body');
+    /** Owner key set by `openNamed` (e.g. 'inbox'). `refresh(name, …)`
+     *  is a no-op when the current owner doesn't match, so live
+     *  updates can re-render an open view without grabbing focus
+     *  from a closed one (or from an unrelated open view like a
+     *  diff drill-in). Untyped calls via `open(title, content)`
+     *  clear the owner — the legacy file-preview/diff/log paths
+     *  don't participate in named-refresh semantics. */
+    let owner = null;
     function open(title, content) {
+      owner = null;
       titleEl.textContent = title;
       bodyEl.replaceChildren(...(content ? [content] : []));
       root.classList.add('open');
       root.setAttribute('aria-hidden', 'false');
     }
+    function openNamed(name, title, content) {
+      open(title, content);
+      owner = name;
+    }
+    function refresh(name, title, content) {
+      if (owner !== name) return;
+      titleEl.textContent = title;
+      bodyEl.replaceChildren(...(content ? [content] : []));
+    }
     function close() {
+      owner = null;
       root.classList.remove('open');
       root.setAttribute('aria-hidden', 'true');
     }
@@ -91,7 +110,7 @@ window.marked = marked;
         if (e.key === 'Escape' && root.classList.contains('open')) close();
       });
     }
-    return { open, close, bind };
+    return { open, openNamed, refresh, close, bind };
   })();
 
   // ─── path linkification ─────────────────────────────────────────────────
@@ -1326,14 +1345,8 @@ window.marked = marked;
     if (operatorInbox.length > INBOX_LIMIT) operatorInbox.length = INBOX_LIMIT;
     return true;
   }
-  function renderInbox() {
-    const root = $('inbox-section');
-    if (!root) return;
-    root.innerHTML = '';
-    if (!operatorInbox.length) {
-      root.append(el('p', { class: 'empty' }, 'no messages'));
-      return;
-    }
+  function buildInboxListNode() {
+    if (!operatorInbox.length) return el('p', { class: 'empty' }, 'no messages');
     const fmt = (n) => new Date(n * 1000).toISOString().replace('T', ' ').slice(0, 19);
     const ul = el('ul', { class: 'inbox' });
     for (const m of operatorInbox) {
@@ -1348,7 +1361,28 @@ window.marked = marked;
       );
       ul.append(li);
     }
-    root.append(ul);
+    return ul;
+  }
+  function renderInbox() {
+    // Inline section on the dashboard (#inbox-section). Hidden /
+    // headless on the flow page; the flow page surfaces inbox via
+    // the pill + side-panel flyout instead.
+    const root = $('inbox-section');
+    if (root && !root.hidden) {
+      root.innerHTML = '';
+      root.append(buildInboxListNode());
+    }
+    // Flow-page pill: visible when there's at least one message,
+    // count tracks operatorInbox length, click opens the side
+    // panel. The element only exists on flow.html; on the
+    // dashboard this no-ops.
+    const pill = $('inbox-pill');
+    const pillCount = $('inbox-pill-count');
+    if (pillCount) pillCount.textContent = String(operatorInbox.length);
+    if (pill) pill.hidden = operatorInbox.length === 0;
+    // If the side panel is currently showing the inbox view, refresh
+    // its body in place so live messages land without a re-open.
+    Panel.refresh('inbox', 'inbox · ' + operatorInbox.length, buildInboxListNode());
   }
 
   const APPROVAL_TAB_KEY = 'hyperhive:approvals:tab';
@@ -2086,6 +2120,87 @@ window.marked = marked;
   NOTIF.bind();
   Panel.bind();
 
+  // ─── tab routing (#369) ────────────────────────────────────────────────
+  // Hash-based: `#swarm` / `#call` / `#system` activate the matching
+  // pane on the dashboard. Empty hash defaults to SW4RM. FL0W is NOT
+  // a tab — it's a separate page (`/flow.html`) reached via the
+  // tab-strip link. Tab routing only applies when the tab DOM is
+  // present (e.g. not on the flow page itself, where these elements
+  // don't exist and the loop no-ops).
+  const TABS = ['swarm', 'call', 'system'];
+  function activateTab(name) {
+    const target = TABS.includes(name) ? name : TABS[0];
+    for (const t of TABS) {
+      const tab = $('tab-' + t);
+      const pane = $('tab-pane-' + t);
+      if (tab) tab.classList.toggle('active', t === target);
+      if (pane) pane.classList.toggle('tab-pane-active', t === target);
+    }
+  }
+  function syncTabFromHash() {
+    const h = (window.location.hash || '#swarm').replace(/^#/, '');
+    activateTab(h);
+  }
+  window.addEventListener('hashchange', syncTabFromHash);
+  syncTabFromHash();
+
+  // Tab count pills — pure derived data from the existing state
+  // stores so SSE-driven updates flow through without extra plumbing.
+  // Set `hidden` when the count is zero so the pill doesn't draw
+  // attention to an empty room.
+  function setTabCount(tab, n) {
+    const el_ = $('tab-count-' + tab);
+    if (!el_) return;
+    el_.textContent = String(n);
+    el_.hidden = n <= 0;
+  }
+  /** Recompute every tab's count from the current state. Called on
+   *  every renderXxx that's tab-relevant. */
+  function refreshTabCounts() {
+    // SW4RM — flag any container that's stale (needs_update). Empty
+    // when everyone's current. Container-row pulse signals state
+    // transitions; the pill catches "deploy-pending" specifically.
+    let swarm = 0;
+    for (const c of containersState.values()) {
+      if (c.needs_update) swarm++;
+    }
+    setTabCount('swarm', swarm);
+    // Y3R C4LL — pending approvals + operator-targeted questions.
+    const callCount =
+      (approvalsState?.pending?.length ?? 0) +
+      (questionsState?.pending?.length ?? 0);
+    setTabCount('call', callCount);
+    // SYST3M — queued + running rebuild_queue entries (terminal
+    // entries are kept for history but aren't 'attention').
+    let sysCount = 0;
+    if (rebuildQueueState) {
+      for (const e of rebuildQueueState) {
+        if (e.state === 'Queued' || e.state === 'Running') sysCount++;
+      }
+    }
+    setTabCount('system', sysCount);
+    // FL0W — operator inbox count.
+    setTabCount('flow', operatorInbox.length);
+  }
+  // Poll the state stores on a 1s tick to keep the pill counts in
+  // sync. The state stores are mutated synchronously by every SSE
+  // event + refreshState call, so polling them is correct and cheap
+  // — no per-renderer hookup needed.
+  refreshTabCounts();
+  setInterval(refreshTabCounts, 1000);
+
+  // Flow page: wire the inbox pill to open the side-panel flyout
+  // with the operator inbox. Only triggers when the pill exists
+  // (i.e. we're on flow.html); on the dashboard this no-ops.
+  (function bindFlowInboxPill() {
+    const pill = $('inbox-pill');
+    if (!pill) return;
+    pill.addEventListener('click', () => {
+      Panel.openNamed('inbox', 'inbox · ' + operatorInbox.length,
+        buildInboxListNode());
+    });
+  })();
+
   // ─── message flow: shared terminal pane ────────────────────────────────
   // Scroll, pill, backfill + SSE plumbing live in hive-fr0nt::TERMINAL_JS
   // (window.HiveTerminal). What stays here is the broker-message
diff --git a/frontend/packages/dashboard/src/dashboard.css b/frontend/packages/dashboard/src/dashboard.css
index 592614a..d940eac 100644
--- a/frontend/packages/dashboard/src/dashboard.css
+++ b/frontend/packages/dashboard/src/dashboard.css
@@ -3,11 +3,116 @@
 @import "@hive/shared/base.css";
 @import "@hive/shared/terminal.css";
 
-body {
-  max-width: 70em;
-  margin: 1.5em auto;
-  padding: 0 1.5em;
+/* ─── tabbed dashboard chrome (#369) ────────────────────────────────
+   Top-of-page sticky header with banner + tab strip. Tab routing is
+   hash-based; tab panes are show/hide via the `.tab-pane-active`
+   class. SSE stays alive across tab switches so count pills update
+   live on inactive tabs without losing pulse on what's happening
+   elsewhere. */
+
+body.dashboard-shell {
+  /* Width is generous so the container tree + agent cards aren't
+     boxed too narrow — agent state pills want room. */
+  max-width: 90em;
+  margin: 0 auto;
+  padding: 0 1.5em 1.5em;
 }
+
+.dashboard-chrome {
+  position: sticky;
+  top: 0;
+  z-index: 25;
+  background: rgba(30, 30, 46, 0.86);
+  -webkit-backdrop-filter: blur(8px) saturate(120%);
+  backdrop-filter: blur(8px) saturate(120%);
+  border-bottom: 1px solid var(--purple-dim);
+  padding: 0.4em 0 0;
+  margin: 0 -1.5em 1em;
+}
+.banner-thin {
+  text-align: center;
+  margin: 0;
+  padding: 0 1em;
+  font-size: 0.78em;
+  color: var(--purple-dim);
+  letter-spacing: 0.15em;
+  white-space: pre;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.tabbar {
+  display: flex;
+  align-items: center;
+  gap: 0.2em;
+  padding: 0.5em 1em 0;
+  border-bottom: 1px solid var(--purple-dim);
+}
+.tabbar .tab {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5em;
+  padding: 0.55em 1em 0.45em;
+  margin-bottom: -1px; /* overlap the tabbar bottom border */
+  color: var(--muted);
+  font-family: inherit;
+  font-size: 0.92em;
+  letter-spacing: 0.08em;
+  text-decoration: none;
+  border: 1px solid transparent;
+  border-bottom: 0;
+  border-radius: 4px 4px 0 0;
+  cursor: pointer;
+  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
+}
+.tabbar .tab:hover {
+  color: var(--purple);
+  background: rgba(203, 166, 247, 0.06);
+}
+.tabbar .tab.active {
+  color: var(--purple);
+  border-color: var(--purple-dim);
+  background: var(--bg);
+  /* Lift the active tab visually — the bottom border of the tabbar
+     yields under it via the -1px margin above. */
+  box-shadow: 0 -2px 12px -4px rgba(203, 166, 247, 0.4);
+}
+.tab-label { font-weight: bold; }
+.tab-count {
+  display: inline-block;
+  background: var(--purple-dim);
+  color: var(--purple);
+  border-radius: 999px;
+  padding: 0 0.55em;
+  min-width: 1.6em;
+  text-align: center;
+  font-size: 0.82em;
+  font-variant-numeric: tabular-nums;
+  font-weight: bold;
+}
+.tab-count-attn {
+  /* Y3R C4LL — operator-action-required pill colour, harder to miss. */
+  background: rgba(243, 139, 168, 0.22);
+  color: var(--red);
+}
+
+/* Notification controls cohabit with the tabs (always-on chrome). */
+.tabbar #notif-row {
+  margin-left: auto;
+  display: flex;
+  gap: 0.5em;
+  align-items: center;
+  padding-right: 0.5em;
+}
+
+/* Tab pane visibility — show only the active one. The .tab-pane-active
+   class is set by app.js based on the URL hash; default (no hash)
+   resolves to SW4RM. */
+.tab-pane { display: none; }
+.tab-pane.tab-pane-active { display: block; }
+
+/* FL0W is a separate page (`/flow.html`) — its full-viewport vibec0re
+   styling lives further down under `body.flow-shell`. */
 .banner {
   text-align: center;
   margin: 0 0 1em 0;
@@ -1174,3 +1279,181 @@ footer a { color: var(--purple); }
   border: 1px solid var(--border);
   padding: 0.2em 0.5em;
 }
+
+/* ─── /flow.html — full-page chat (#369) ───────────────────────────
+   The all-agents chat surface lives on its own page so it can claim
+   full-viewport vibec0re styling (operator @ #369#issuecomment-3437).
+   Same shape as the per-agent live page (#362): frosted-glass header
+   at top, frosted composer docked at bottom, terminal scrolls
+   behind both. Operator inbox lives behind a header pill that opens
+   the side-panel flyout — preserves the "inbox + chat in one view"
+   ergonomics without stealing terminal real estate. */
+
+:root {
+  --flow-header-h: 4.2em;
+  --flow-composer-h: 3.6em;
+  --flow-frost-bg: rgba(30, 30, 46, 0.74);
+  --flow-frost-blur: blur(12px) saturate(140%);
+}
+
+body.flow-shell {
+  /* Override the dashboard's centred-max-width layout — flow owns
+     the whole viewport. */
+  max-width: none;
+  margin: 0;
+  padding: 0;
+  height: 100vh;
+  overflow: hidden;
+  background:
+    radial-gradient(ellipse 80% 60% at 50% 0%,
+                    rgba(203, 166, 247, 0.06) 0%,
+                    transparent 60%),
+    var(--bg);
+}
+
+.flow-header {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 30;
+  min-height: var(--flow-header-h);
+  display: flex;
+  align-items: center;
+  gap: 1em;
+  padding: 0.55em 1em;
+  background: var(--flow-frost-bg);
+  -webkit-backdrop-filter: var(--flow-frost-blur);
+  backdrop-filter: var(--flow-frost-blur);
+  border-bottom: 1px solid var(--purple-dim);
+  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
+  flex-wrap: wrap;
+}
+.flow-back {
+  color: var(--cyan);
+  text-decoration: none;
+  font-size: 0.85em;
+  letter-spacing: 0.1em;
+  padding: 0.25em 0.6em;
+  border: 1px solid var(--purple-dim);
+  border-radius: 4px;
+  flex: 0 0 auto;
+  transition: border-color 0.15s ease, color 0.15s ease;
+}
+.flow-back:hover {
+  border-color: var(--cyan);
+  text-shadow: 0 0 8px rgba(137, 220, 235, 0.6);
+}
+.flow-title {
+  margin: 0;
+  font-size: 1.2em;
+  color: var(--purple);
+  text-transform: uppercase;
+  letter-spacing: 0.15em;
+}
+.flow-hint {
+  margin: 0;
+  color: var(--muted);
+  font-size: 0.82em;
+  flex: 1 1 auto;
+  min-width: 0;
+}
+.flow-header .notif-row {
+  margin-left: auto;
+  display: flex;
+  gap: 0.4em;
+}
+
+/* Inbox pill — operator inbox flyout trigger. Sits right under the
+   header so it stays in the operator's gaze without crowding the
+   chat. Same shape as the agent page's pills (#362). */
+.flow-pill {
+  position: fixed;
+  top: calc(var(--flow-header-h) + 0.8em);
+  right: 1em;
+  z-index: 25;
+  background: var(--bg-elev);
+  border: 1px solid var(--purple-dim);
+  color: var(--fg);
+  font-family: inherit;
+  font-size: 0.85em;
+  letter-spacing: 0.04em;
+  border-radius: 999px;
+  padding: 0.3em 0.8em;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5em;
+  cursor: pointer;
+  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
+  transition: border-color 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
+}
+.flow-pill:hover {
+  border-color: var(--purple);
+  color: var(--purple);
+  box-shadow: 0 0 12px -2px var(--purple);
+}
+.flow-pill-icon { font-size: 1.05em; line-height: 1; }
+.flow-pill-label { color: var(--muted); }
+.flow-pill-count {
+  background: rgba(250, 179, 135, 0.18);
+  color: var(--amber);
+  border-radius: 999px;
+  padding: 0 0.5em;
+  min-width: 1.6em;
+  text-align: center;
+  font-weight: bold;
+  font-variant-numeric: tabular-nums;
+}
+
+.flow-main {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+}
+.flow-main .terminal-wrap {
+  position: absolute;
+  inset: 0;
+  border: 0;
+  background: transparent;
+  box-shadow: none;
+  border-radius: 0;
+  margin: 0;
+  padding: 0;
+}
+.flow-main .live {
+  position: absolute;
+  inset: 0;
+  height: auto;
+  max-height: none;
+  padding-top: calc(var(--flow-header-h) + 0.8em);
+  padding-bottom: calc(var(--flow-composer-h) + 0.8em);
+  scroll-padding-top: calc(var(--flow-header-h) + 0.8em);
+  scroll-padding-bottom: calc(var(--flow-composer-h) + 0.8em);
+  overflow: auto;
+}
+.flow-main .tail-pill {
+  bottom: calc(var(--flow-composer-h) + 0.6em);
+}
+
+.flow-composer {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  z-index: 30;
+  min-height: var(--flow-composer-h);
+  background: var(--flow-frost-bg);
+  -webkit-backdrop-filter: var(--flow-frost-blur);
+  backdrop-filter: var(--flow-frost-blur);
+  border-top: 1px solid var(--purple-dim);
+  box-shadow: 0 -6px 18px rgba(0, 0, 0, 0.35);
+  padding: 0.4em 1em;
+}
+
+/* Hidden inbox section on the flow page — the renderInbox path
+   wants `#inbox-section` in the DOM (legacy contract), but we
+   surface the messages via the pill/flyout instead. */
+.flow-inbox-headless { display: none !important; }
diff --git a/frontend/packages/dashboard/src/flow.html b/frontend/packages/dashboard/src/flow.html
new file mode 100644
index 0000000..031c1ee
--- /dev/null
+++ b/frontend/packages/dashboard/src/flow.html
@@ -0,0 +1,93 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <title>hyperhive // FL0W</title>
+  <link rel="icon" type="image/svg+xml" href="/favicon.svg">
+  <link rel="stylesheet" href="/static/dashboard.css">
+</head>
+<body class="flow-shell">
+
+  <!-- Fixed-overlay header. Frosted glass over the message flow —
+       backdrop-filter blur shows the scrolled chat text behind. Mirrors
+       the agent live page's overlay layout (#362). -->
+  <header class="flow-header" id="flow-header">
+    <a href="/" class="flow-back" title="back to dashboard">← d4shb04rd</a>
+    <h2 class="flow-title">◆ FL0W ◆</h2>
+    <p class="flow-hint">live broker tail · newest at the top · <code>@name</code> picks a recipient (sticky); <code>tab</code> completes</p>
+    <!-- Notif controls cohabit here (no other chrome on this page).
+         Same IDs as on the dashboard so app.js's NOTIF binding picks
+         them up unchanged. -->
+    <div id="notif-row" class="notif-row">
+      <button type="button" id="notif-enable" class="btn btn-notif" hidden>🔔 enable notifications</button>
+      <button type="button" id="notif-mute"   class="btn btn-notif" hidden>🔕 mute</button>
+      <button type="button" id="notif-unmute" class="btn btn-notif" hidden>🔔 unmute</button>
+      <span id="notif-status" class="meta" hidden></span>
+    </div>
+  </header>
+
+  <!-- Operator inbox flyout trigger — count + click → side panel
+       (singleton, declared below). Hidden until the inbox is non-
+       empty. Mirrors the agent page's pill pattern (#362). -->
+  <button type="button" id="inbox-pill" class="flow-pill" hidden
+          title="open operator inbox">
+    <span class="flow-pill-icon" aria-hidden="true">📬</span>
+    <span class="flow-pill-label">inbox</span>
+    <span class="flow-pill-count" id="inbox-pill-count">0</span>
+  </button>
+
+  <!-- Main content: the full-viewport terminal. Padded for the
+       overlay header + composer so the first/last rows stay
+       reachable. -->
+  <main class="flow-main">
+    <div class="terminal-wrap">
+      <div id="msgflow" class="live terminal"><div class="meta">connecting…</div></div>
+    </div>
+  </main>
+
+  <!-- Fixed-overlay composer at the bottom. Same frosted treatment
+       as the header — symmetric framing, terminal goes edge-to-edge
+       between them. -->
+  <footer class="flow-composer">
+    <div id="op-compose" class="op-compose">
+      <span id="op-compose-prompt" class="op-compose-prompt">@—&gt;</span>
+      <textarea id="op-compose-input" class="op-compose-input"
+                placeholder="@agent message…  (enter sends, shift+enter newline, tab completes @-mention)"
+                rows="1" autocomplete="off"></textarea>
+      <div id="op-compose-suggest" class="op-compose-suggest" hidden></div>
+    </div>
+  </footer>
+
+  <!-- Inbox rendered offscreen — kept in the DOM so app.js's
+       renderInbox keeps working unchanged. The pill click handler
+       opens the side panel which displays a clone of the list. The
+       legacy section heading would otherwise be visible; hidden
+       here. -->
+  <div id="inbox-section" class="flow-inbox-headless" hidden>
+    <p class="meta">loading…</p>
+  </div>
+
+  <!-- Slide-in side panel. Singleton — JS swaps the title + body
+       and toggles `.open`. On this page only used to surface the
+       operator inbox flyout; the dashboard's other panel uses
+       (approval diffs, file previews, logs) don't apply here. -->
+  <div id="side-panel" class="side-panel" aria-hidden="true">
+    <div class="side-panel-backdrop" id="side-panel-backdrop"></div>
+    <aside class="side-panel-drawer" role="dialog" aria-modal="true"
+           aria-labelledby="side-panel-title">
+      <header class="side-panel-head">
+        <span class="side-panel-title" id="side-panel-title"></span>
+        <button type="button" class="side-panel-close" id="side-panel-close"
+                title="close (esc)">✕</button>
+      </header>
+      <div class="side-panel-body" id="side-panel-body"></div>
+    </aside>
+  </div>
+
+  <!-- Same bundled entry as the dashboard. Renderers whose target
+       DOM doesn't exist on this page no-op silently. SSE +
+       /api/state fetching still run; only the chat-relevant chunks
+       have anywhere to render to. -->
+  <script type="module" src="/static/app.js" defer></script>
+</body>
+</html>
diff --git a/frontend/packages/dashboard/src/index.html b/frontend/packages/dashboard/src/index.html
index be99833..2acb542 100644
--- a/frontend/packages/dashboard/src/index.html
+++ b/frontend/packages/dashboard/src/index.html
@@ -6,86 +6,133 @@
   <link rel="icon" type="image/svg+xml" href="/favicon.svg">
   <link rel="stylesheet" href="/static/dashboard.css">
 </head>
-<body>
-  <pre class="banner">
-░▒▓█▓▒░  HYPERHIVE  ░▒▓█▓▒░  HIVE-C0RE  ░▒▓█▓▒░  WE ARE THE WIRED  ░▒▓█▓▒░
-  </pre>
+<body class="dashboard-shell">
 
-  <div id="notif-row" class="notif-row">
-    <button type="button" id="notif-enable" class="btn btn-notif" hidden>🔔 enable notifications</button>
-    <button type="button" id="notif-mute"   class="btn btn-notif" hidden>🔕 mute</button>
-    <button type="button" id="notif-unmute" class="btn btn-notif" hidden>🔔 unmute</button>
-    <span id="notif-status" class="meta" hidden></span>
-  </div>
+  <!-- Sticky chrome — banner + tab strip. Tabs route via the URL
+       hash so F5 / back-button / shared links keep you on the same
+       view. JS owns the actual show/hide; this is just the menu. -->
+  <header class="dashboard-chrome">
+    <pre class="banner banner-thin">░▒▓█▓▒░ HYPERHIVE / HIVE-C0RE / WE ARE THE WIRED ░▒▓█▓▒░</pre>
 
-  <!-- swarm: live containers, dormant state, meta input bumps that
-       affect the whole swarm. -->
-  <h2>◆ C0NTAINERS ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <div id="containers-section">
-    <p class="meta">loading…</p>
-  </div>
+    <nav class="tabbar" id="tabbar" role="tablist">
+      <a class="tab" id="tab-swarm" href="#swarm" role="tab"
+         aria-controls="tab-pane-swarm"
+         data-tab="swarm">
+        <span class="tab-label">◆ SW4RM ◆</span>
+        <span class="tab-count" id="tab-count-swarm" hidden></span>
+      </a>
+      <a class="tab" id="tab-call" href="#call" role="tab"
+         aria-controls="tab-pane-call"
+         data-tab="call">
+        <span class="tab-label">◆ Y3R C4LL ◆</span>
+        <span class="tab-count tab-count-attn" id="tab-count-call" hidden></span>
+      </a>
+      <a class="tab" id="tab-system" href="#system" role="tab"
+         aria-controls="tab-pane-system"
+         data-tab="system">
+        <span class="tab-label">◆ SYST3M ◆</span>
+        <span class="tab-count" id="tab-count-system" hidden></span>
+      </a>
 
-  <h2>◆ K3PT ST4T3 ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <div id="tombstones-section">
-    <p class="meta">loading…</p>
-  </div>
+      <!-- FL0W is its own page (`/flow.html`), not a tab — per
+           operator @ #369#issuecomment-3437 ("yes terminal can be a
+           separate page"). The link lives in the tab strip so it
+           reads as a peer surface; clicking navigates rather than
+           swapping panes in place. Count pill mirrors the dashboard's
+           operator-inbox length and is hidden when zero. -->
+      <a class="tab tab-link" id="tab-flow" href="/flow.html"
+         title="open the all-agents chat in a dedicated full-page terminal">
+        <span class="tab-label">◆ FL0W ◆ →</span>
+        <span class="tab-count" id="tab-count-flow" hidden></span>
+      </a>
 
-  <h2>◆ M3T4 1NPUTS ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <p class="meta">select inputs to <code>nix flake update</code> in <code>/meta/</code>. selected agents rebuild in sequence after the lock bump; manager learns each outcome via the usual <code>rebuilt</code> system event.</p>
-  <div id="meta-inputs-section">
-    <p class="meta">loading…</p>
-  </div>
+      <!-- Notification controls live in the chrome (always-on
+           ergonomics; not tab-specific). -->
+      <div id="notif-row" class="notif-row">
+        <button type="button" id="notif-enable" class="btn btn-notif" hidden>🔔 enable notifications</button>
+        <button type="button" id="notif-mute"   class="btn btn-notif" hidden>🔕 mute</button>
+        <button type="button" id="notif-unmute" class="btn btn-notif" hidden>🔔 unmute</button>
+        <span id="notif-status" class="meta" hidden></span>
+      </div>
+    </nav>
+  </header>
 
-  <h2>◆ R3BU1LD QU3U3 ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <p class="meta">pending + running rebuilds, meta-updates, and first-spawns. one runs at a time; meta-update cascades nest under their parent. dedup: re-enqueueing a still-queued op collapses into the existing entry.</p>
-  <div id="rebuild-queue-section">
-    <p class="meta">loading…</p>
-  </div>
+  <!-- Tab panes. Exactly one is `.tab-pane-active` at a time;
+       JS toggles based on the URL hash + `hashchange` events. -->
+  <main class="dashboard-main">
 
-  <!-- operator decisions: things waiting on you. -->
-  <h2>◆ M1ND H4S QU3STI0NS ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <div id="questions-section">
-    <p class="meta">loading…</p>
-  </div>
+    <!-- SW4RM: the swarm itself. Container cards (the central thing
+         the operator looks at) and rebuild queue / cascade visualisation
+         that drives them. -->
+    <section class="tab-pane" id="tab-pane-swarm"
+             role="tabpanel" aria-labelledby="tab-swarm">
+      <h2>◆ C0NTAINERS ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <div id="containers-section">
+        <p class="meta">loading…</p>
+      </div>
+    </section>
 
-  <h2>◆ QU3U3D R3M1ND3RS ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <p class="meta">reminders agents have queued for themselves but not yet delivered. cancel to drop a stuck or unwanted entry.</p>
-  <div id="reminders-section">
-    <p class="meta">loading…</p>
-  </div>
+    <!-- Y3R C4LL: things blocked on operator decision. Approvals +
+         questions read as the same concept ("something is waiting on
+         you"); both surface their full bodies inline so the operator
+         can decide without leaving the pane. -->
+    <section class="tab-pane" id="tab-pane-call"
+             role="tabpanel" aria-labelledby="tab-call">
+      <h2>◆ P3NDING APPR0VALS ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <div id="approvals-section">
+        <p class="meta">loading…</p>
+      </div>
 
-  <h2>◆ P3NDING APPR0VALS ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <div id="approvals-section">
-    <p class="meta">loading…</p>
-  </div>
+      <h2>◆ M1ND H4S QU3STI0NS ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <div id="questions-section">
+        <p class="meta">loading…</p>
+      </div>
+    </section>
 
-  <!-- messages: broker traffic + the compose box that produces it. -->
-  <h2>◆ 0PER4T0R 1NB0X ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <div id="inbox-section">
-    <p class="meta">loading…</p>
-  </div>
+    <!-- SYST3M: passive / rare-interaction state. Meta inputs (lock
+         bumps), rebuild queue (watch only), queued reminders, kept
+         state from previous tombstoned agents. Headings stay; the
+         per-section content auto-compresses to a one-line summary
+         when empty (separate JS toggle). -->
+    <section class="tab-pane" id="tab-pane-system"
+             role="tabpanel" aria-labelledby="tab-system">
+      <h2>◆ M3T4 1NPUTS ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <p class="meta">select inputs to <code>nix flake update</code> in <code>/meta/</code>. selected agents rebuild in sequence after the lock bump; manager learns each outcome via the usual <code>rebuilt</code> system event.</p>
+      <div id="meta-inputs-section">
+        <p class="meta">loading…</p>
+      </div>
 
-  <h2>◆ MESS4GE FL0W ◆</h2>
-  <div class="divider">══════════════════════════════════════════════════════════════</div>
-  <p class="meta">live tail — newest at the top. tap on every <code>send</code> / <code>recv</code> through the broker. compose below: <code>@name</code> picks the recipient (sticky until you @ someone else); <code>tab</code> completes.</p>
-  <div class="terminal-wrap">
-    <div id="msgflow" class="live"><div class="meta">connecting…</div></div>
-    <div id="op-compose" class="op-compose">
-      <span id="op-compose-prompt" class="op-compose-prompt">@—&gt;</span>
-      <textarea id="op-compose-input" class="op-compose-input"
-                placeholder="@agent message…  (enter sends, shift+enter newline, tab completes @-mention)"
-                rows="1" autocomplete="off"></textarea>
-      <div id="op-compose-suggest" class="op-compose-suggest" hidden></div>
-    </div>
-  </div>
+      <h2>◆ R3BU1LD QU3U3 ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <p class="meta">pending + running rebuilds, meta-updates, and first-spawns. one runs at a time; meta-update cascades nest under their parent. dedup: re-enqueueing a still-queued op collapses into the existing entry.</p>
+      <div id="rebuild-queue-section">
+        <p class="meta">loading…</p>
+      </div>
+
+      <h2>◆ QU3U3D R3M1ND3RS ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <p class="meta">reminders agents have queued for themselves but not yet delivered. cancel to drop a stuck or unwanted entry.</p>
+      <div id="reminders-section">
+        <p class="meta">loading…</p>
+      </div>
+
+      <h2>◆ K3PT ST4T3 ◆</h2>
+      <div class="divider">══════════════════════════════════════════════════════════════</div>
+      <div id="tombstones-section">
+        <p class="meta">loading…</p>
+      </div>
+    </section>
+
+    <!-- FL0W: lives on its own page now (`/flow.html`). The
+         message-flow + inbox + compose DOM only exists there — when
+         app.js boots on this page the corresponding renderers
+         no-op silently (each guard is `if (!el) return`). -->
+
+  </main>
 
   <footer>
     <div class="divider">══════════════════════════════════════════════════════════════</div>
@@ -95,7 +142,8 @@
   <!-- Slide-in detail panel. Long content (clicked file previews,
        approval diffs, journald logs, applied config) opens here
        instead of expanding inline. Singleton — JS swaps the title +
-       body and toggles `.open`. -->
+       body and toggles `.open`. Lives outside the tab panes so it
+       overlays any active tab. -->
   <div id="side-panel" class="side-panel" aria-hidden="true">
     <div class="side-panel-backdrop" id="side-panel-backdrop"></div>
     <aside class="side-panel-drawer" role="dialog" aria-modal="true"