fix(oracle-l8): close 3 polish caveats (dispatch labels / chat unread / leftrail leak)

Oracle PASS-with-caveats; closing all 3:

1. Wizard dispatch labels were 'human'/'agent'/'system' (impl-ish).
   Now 'Person'/'Assistant'/'System' in both the dropdown and the
   preview-pane badge.

2. Chat badge was thread COUNT (a buyer with 5 chats sees '5' forever).
   Now real unread count, computed locally from localStorage heads +
   read maps that the Chat scene already persists. App.tsx topbar
   poll still only fires 2 network calls (listThreads + workItems);
   per-thread unread math is zero-network.

3. LeftRail toast leaked 'POST /api/runtime/transactions/{id}/actions/
   submit' / save_draft. Rewritten as 'Switch to live mode and sign
   in to submit this action against EA2.'

Plus engineering-string sweep elsewhere: 'demo.flow-master.ai' /
'bundled JSON' / 'in-browser fetch' references removed from:
- App.tsx mode toggle title
- MissionControl loading spinner
- Landing mode-button title
- state/store snapshot toast
- data/live.ts + data/synthetic.ts tour-step bodies
- buildScenarios.ts tagline

Source-grep confirms no remaining user-visible engineering jargon
referencing the backend hostname or raw endpoints.

src/App.tsx

@@ -76,12 +76,32 @@ export default function App() {
 
   const liveAge = liveFetchedAt ? `${Math.max(0, Math.floor((Date.now() - liveFetchedAt) / 1000))}s ago` : null;
 
-  const [chatThreadCount, setChatThreadCount] = useState(0);
+  const [chatUnreadCount, setChatUnreadCount] = useState(0);
   const [queueCount, setQueueCount] = useState(0);
   const tenantId = useApp((s) => s.tenantId);
+
+  // Topbar badge poll. listThreads + workItems only (one request each, no
+  // per-thread reads — that's what caused the idle-poll regression earlier).
+  // Unread count is computed locally from heads + read maps persisted by the
+  // Chat scene to localStorage, so no extra network is needed.
   useEffect(() => {
     if (!isAuthed || !tenantId || !userEmail) return;
     let cancelled = false;
+    const computeUnread = (threadKeys: string[]): number => {
+      let heads: Record<string, { at: string; by: string }> = {};
+      let readMap: Record<string, string> = {};
+      try { heads = JSON.parse(localStorage.getItem(`fm.canvas.chat.heads.${userEmail}`) || "{}"); } catch { /* ignore */ }
+      try { readMap = JSON.parse(localStorage.getItem(`fm.canvas.chat.read.${userEmail}`) || "{}"); } catch { /* ignore */ }
+      let n = 0;
+      for (const k of threadKeys) {
+        const head = heads[k];
+        if (!head) continue;
+        if (head.by === userEmail) continue;
+        const readAt = readMap[k];
+        if (!readAt || head.at > readAt) n++;
+      }
+      return n;
+    };
     const refresh = async () => {
       try {
         const { chatApi } = await import("./lib/chatApi");
@@ -91,7 +111,7 @@ export default function App() {
           apiMod.workItems().catch(() => []),
         ]);
         if (cancelled) return;
-        setChatThreadCount(threads.length);
+        setChatUnreadCount(computeUnread(threads.map((t) => t._key)));
         setQueueCount(items.filter((it) => (it as any).tenant_id === tenantId).length);
       } catch { /* ignore */ }
     };
@@ -127,7 +147,7 @@ export default function App() {
             </button>
             <button role="tab" aria-selected={scene === "chat"} className={`tab${scene === "chat" ? " tab-sel" : ""}`} onClick={() => setScene("chat")}>
               <Bot size={13} /> Chat
-              {chatThreadCount > 0 && <span className="tab-badge tab-badge-amber">{chatThreadCount > 99 ? "99+" : chatThreadCount}</span>}
+              {chatUnreadCount > 0 && <span className="tab-badge tab-badge-amber">{chatUnreadCount > 99 ? "99+" : chatUnreadCount}</span>}
             </button>
             <button role="tab" aria-selected={scene === "agent"} className={`tab${scene === "agent" ? " tab-sel" : ""}`} onClick={() => setScene("agent")}>
               <Bot size={13} /> Assistant
@@ -175,7 +195,7 @@ export default function App() {
               disabled={liveLoading}
               title={mode === "live"
                 ? `Live mode is on. Fetched ${liveAge}. Click to drop back to snapshot.`
-                : "Click to fetch live scenarios from demo.flow-master.ai in the browser."}
+                : "Click to switch to live mode and fetch real-time EA2 data."}
             >
               {liveLoading ? <span className="spin" /> : <Pulse size={12} />}
               <span className={`mode-pill mode-${mode}`}>{mode === "live" ? "LIVE" : "SNAPSHOT"}</span>

src/components/LeftRail.tsx

@@ -92,7 +92,7 @@ function AgentActions({ txId }: { txId: string | null }) {
   const [running, setRunning] = useState<"confirm" | "reject" | null>(null);
   const onConfirm = async () => {
     if (!isLive) {
-      pushToast("info", "Switch to LIVE mode + sign in to fire POST /api/runtime/transactions/{id}/actions/submit for real.");
+      pushToast("info", "Switch to live mode and sign in to submit this action against EA2.");
       return;
     }
     setRunning("confirm");
@@ -100,7 +100,7 @@ function AgentActions({ txId }: { txId: string | null }) {
   };
   const onReject = async () => {
     if (!isLive) {
-      pushToast("info", "Switch to LIVE mode + sign in to fire POST /api/runtime/transactions/{id}/actions/save_draft for real.");
+      pushToast("info", "Switch to live mode and sign in to save this as a draft.");
       return;
     }
     setRunning("reject");

src/data/live.ts

@@ -247,7 +247,7 @@ function buildScenario(raw: LiveScenarioRaw): ProcessScenario {
     defName: pd.display_name || pd.name,
     version: versionLabel,
     headlineTx: raw.headlineTx,
-    tagline: `${pd.display_name || pd.name} · ${versionLabel} · live from demo.flow-master.ai`,
+    tagline: `${pd.display_name || pd.name} · ${versionLabel} · live from EA2`,
     steps,
     edges,
     rules,
@@ -270,7 +270,7 @@ function buildTour(familyId: string, defaultStepId: string, steps: ProcessStep[]
       id: "t1",
       anchor: "graph",
       title: `Welcome to ${familyId === "procurement" ? "Procurement to Pay" : "this process"}`,
-      body: "This is a real, live process running on demo.flow-master.ai. Each node is a step the system actually executes. Click any node to inspect it.",
+      body: "This is a real, live process running on EA2. Each node is a step the system actually executes. Click any node to inspect it.",
       selectStep: running,
     },
     {

src/data/synthetic.ts

@@ -83,7 +83,7 @@ function baseTour(familyId: string): TourStep[] {
     { id: "t3", anchor: "inspector", title: "Same shape for every process", body: "The right rail is identical across live and blueprint scenarios — typed fields, governing rules, evidence trail, runs, raw payload. That's the point: one inspector, every process family." },
     { id: "t4", anchor: "command", title: "Drive Mission Control with ⌘K", body: "Press ⌘K (or Ctrl+K) to switch scenarios, jump to a step, toggle live mode, or start a tour. Everything is one keystroke away." },
     { id: "t5", anchor: "telemetry", title: "Cross-family rollup", body: "The bottom strip rolls running, errored, and SLA across every scenario in the catalog — blueprint and live — so an operations lead sees one number for the whole company." },
-    { id: "t6", anchor: "graph", title: "You're in control", body: "That's the loop. Try another scenario, open the command palette, or flip LIVE mode in the topbar to fetch fresh data from demo.flow-master.ai right in the browser." },
+    { id: "t6", anchor: "graph", title: "You're in control", body: "That's the loop. Try another scenario, open the command palette, or flip live mode in the topbar to fetch fresh data from EA2 right in the browser." },
   ];
 }
 

src/lib/buildScenarios.ts

@@ -176,7 +176,7 @@ function buildScenarioFromGraph(
     defName: pd.display_name || pd.name,
     version: versionLabel,
     headlineTx: headlineRt?.transaction_id ?? null,
-    tagline: `${pd.display_name || pd.name} · ${versionLabel} · live from demo.flow-master.ai`,
+    tagline: `${pd.display_name || pd.name} · ${versionLabel} · live from EA2`,
     steps,
     edges,
     rules,

src/scenes/Chat.tsx

@@ -110,11 +110,16 @@ export default function Chat() {
     ).then((pairs) => {
       if (cancelled) return;
       const map: Record<string, ChatMessage | null> = {};
-      for (const [k, v] of pairs) map[k] = v;
+      const heads: Record<string, { at: string; by: string }> = {};
+      for (const [k, v] of pairs) {
+        map[k] = v;
+        if (v) heads[k] = { at: v.created_at, by: v.author_email };
+      }
       setPreviews(map);
+      try { localStorage.setItem(`fm.canvas.chat.heads.${me}`, JSON.stringify(heads)); } catch { /* ignore */ }
     });
     return () => { cancelled = true; };
-  }, [threads]);
+  }, [threads, me]);
 
   const unreadCount = useMemo(() => {
     let n = 0;

src/scenes/Landing.tsx

@@ -62,7 +62,7 @@ export default function Landing() {
               className={`btn btn-ghost btn-lg${mode === "live" ? " is-on" : ""}`}
               onClick={() => mode === "live" ? refreshLive() : setMode("live")}
               disabled={liveLoading}
-              title={mode === "live" ? "Re-fetch live scenarios from demo.flow-master.ai" : "Toggle between bundled snapshot and a live in-browser fetch"}
+              title={mode === "live" ? "Re-fetch live data from EA2" : "Switch to live mode"}
             >
               {liveLoading ? <span className="spin" /> : <Pulse size={13} />}
               {mode === "live" ? "Live · refresh" : "Go live"}

src/scenes/MissionControl.tsx

@@ -17,7 +17,7 @@ export default function MissionControl() {
     <div className="mc">
       {liveLoading && (
         <div className="mc-banner mc-banner-info">
-          <span className="spin" /> Fetching live scenarios from demo.flow-master.ai…
+          <span className="spin" /> Fetching live data from EA2…
         </div>
       )}
       {liveError && (

src/scenes/Wizard.tsx

@@ -281,7 +281,7 @@ export default function Wizard() {
                 <li key={n._key || i} className="wizard-preview-chain-item">
                   <span className="wizard-preview-chain-idx">{i + 1}</span>
                   <span className="wizard-preview-chain-name">{n.display_name || "Untitled step"}</span>
-                  <span className={`wizard-preview-chain-kind kind-${n.dispatch_kind || "human"}`}>{n.dispatch_kind || "human"}</span>
+                  <span className={`wizard-preview-chain-kind kind-${n.dispatch_kind || "human"}`}>{({ human: "Person", agent: "Assistant", system: "System" } as Record<string, string>)[n.dispatch_kind || "human"] || "Person"}</span>
                 </li>
               ))}
             </ol>
@@ -412,8 +412,8 @@ export default function Wizard() {
                           updateDraft({ nodes: newNodes });
                         }}
                       >
-                        <option value="human">Human</option>
-                        <option value="agent">Agent</option>
+                        <option value="human">Person</option>
+                        <option value="agent">Assistant</option>
                         <option value="system">System</option>
                       </select>
                       <div className="node-controls">

src/state/store.ts

@@ -200,7 +200,7 @@ export const useApp = create<AppState>((set, get) => {
         if (get().mode === "snapshot") return;
         set({ mode: "snapshot", scenarios: SNAPSHOT_SCENARIOS, liveError: null, liveLoading: false });
         get().stopPolling();
-        get().pushToast("info", "Switched to snapshot mode (bundled JSON)");
+        get().pushToast("info", "Switched to snapshot mode");
         persist();
         return;
       }