diff --git a/content/emergency/source.json b/content/emergency/source.json
index 27707ac..93a3b37 100644
--- a/content/emergency/source.json
+++ b/content/emergency/source.json
@@ -1,7 +1,7 @@
 {
   "section": "emergency",
   "emergencySchemaVersion": 1,
-  "contentVersion": 4,
+  "contentVersion": 5,
   "updatedAt": "2026-08-31T00:00:00Z",
   "services": {
     "emergencyNumber": "911",
@@ -22,18 +22,19 @@
       "id": "weather",
       "title": "Severe Weather",
       "steps": [
-        "Call 911 if there is immediate danger",
         "Seek appropriate shelter",
-        "Follow event staff instructions"
+        "Follow event staff instructions",
+        "Call 911 only when event help isn't available."
       ]
     },
     {
       "id": "medical",
       "title": "Medical Emergency",
       "steps": [
-        "Call 911",
         "Tell event staff or venue personnel",
-        "Keep access clear for responders"
+        "Go to or call for first aid",
+        "Keep access clear for responders",
+        "If you can't reach event staff or first aid, call 911."
       ]
     }
   ]
diff --git a/eslint.config.js b/eslint.config.js
index 0c0123e..09e47a4 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -11,6 +11,7 @@ export default tseslint.config(
       "node_modules/**",
       "coverage/**",
       "experiments/**",
+      "instance/**",
       "scripts/serve-demo.mjs",
       "public/sw.js",
       "share/**",
diff --git a/package.json b/package.json
index 121d71a..40b9fc3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lumen",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "private": true,
   "description": "Lumen — offline-first festival PWA. Stage 1 foundation only; no feature code yet per IMPLEMENTATION-CONTRACT.md Stage 1.",
   "type": "module",
@@ -18,6 +18,9 @@
     "test": "vitest run",
     "test:watch": "vitest",
     "build": "vite build",
+    "deploy": "npm run build && npm run bump-version patch",
+    "bump-version": "vite-node scripts/bump-version.ts",
+    "dev:deploy": "npm run build && npm run bump-version patch",
     "preview": "vite preview",
     "package:staging": "vite-node pipeline/run.ts",
     "package:smoke": "vite-node pipeline/run.ts --smoke-only",
diff --git a/src/app/layout.ts b/src/app/layout.ts
index 2eaf663..d42c371 100644
--- a/src/app/layout.ts
+++ b/src/app/layout.ts
@@ -63,6 +63,24 @@ export function createLayout(): {
   }
   header.append(themeBtn);
 
+  const settingsLink = document.createElement("a");
+  settingsLink.href = "/settings";
+  settingsLink.setAttribute("data-route", "/settings");
+  settingsLink.className = "app-header__settings";
+  settingsLink.textContent = "⚙";
+  settingsLink.setAttribute("aria-label", "Settings");
+  settingsLink.style.minWidth = "36px";
+  settingsLink.style.minHeight = "36px";
+  settingsLink.style.padding = "0.25rem 0.5rem";
+  settingsLink.style.fontSize = "1.125rem";
+  settingsLink.style.textDecoration = "none";
+  settingsLink.style.display = "inline-flex";
+  settingsLink.style.alignItems = "center";
+  settingsLink.style.justifyContent = "center";
+  settingsLink.style.borderRadius = "999px";
+  settingsLink.style.cursor = "pointer";
+  header.append(settingsLink);
+
   const statusChip = document.createElement("div");
   statusChip.className = "app-header__status";
   statusChip.setAttribute("role", "status");
diff --git a/src/app/main.ts b/src/app/main.ts
index f578cb7..004eef6 100644
--- a/src/app/main.ts
+++ b/src/app/main.ts
@@ -41,6 +41,7 @@ import { loadMapData, type MapHandle } from "./map.js";
 import type { MapViewData } from "../domain/map/types.js";
 import { createFestivalView } from "../ui/views/festival/festival.js";
 import { createNotFoundView } from "../ui/views/not-found.js";
+import { renderSettings } from "../ui/views/settings/settings.js";
 
 export interface RouteData {
   readonly emergency?: EmergencyViewModel | undefined;
@@ -75,6 +76,8 @@ function renderView(path: string, data?: RouteData): HTMLElement {
       return createMapView(data?.map ?? null);
     case "festival":
       return createFestivalView();
+    case "settings":
+      return renderSettings();
     case "not-found":
       return createNotFoundView(path);
   }
@@ -219,24 +222,39 @@ function mount(): { router: Router; cleanup: () => void } {
                       : "Activating…";
                 paint();
               },
-            }).then((outcome) => {
-              syncBusy = false;
-              syncMessage =
-                outcome.status === "ok"
-                  ? `Festival data v${String(outcome.version)} is live. You can go offline now.`
-                  : outcome.status === "no-update"
-                    ? "You already have the latest festival data."
-                    : outcome.status === "offline"
-                      ? "No sync source reachable right now."
-                      : outcome.status === "rejected"
-                        ? `Update rejected — keeping current data. (${outcome.detail})`
-                        : outcome.status === "not-configured"
-                          ? `No sync source configured. (${outcome.detail})`
-                          : `Sync failed. (${outcome.detail})`;
-              paint();
-              // Refresh the readiness chip behind the dialog either way.
-              void refreshReadiness(false);
-            });
+              onProgress: (done, _total, label) => {
+                syncMessage = `Downloading and verifying… (${String(done)} files · ${label})`;
+                paint();
+              },
+            })
+              .then((outcome) => {
+                syncBusy = false;
+                syncMessage =
+                  outcome.status === "ok"
+                    ? `Festival data v${String(outcome.version)} is live. You can go offline now.`
+                    : outcome.status === "no-update"
+                      ? "You already have the latest festival data."
+                      : outcome.status === "offline"
+                        ? "No sync source reachable right now."
+                        : outcome.status === "rejected"
+                          ? `Update rejected — keeping current data. (${outcome.detail})`
+                          : outcome.status === "not-configured"
+                            ? `No sync source configured. (${outcome.detail})`
+                            : `Sync failed. (${outcome.detail})`;
+                paint();
+                // Refresh the readiness chip behind the dialog either way.
+                void refreshReadiness(false);
+              })
+              .catch((error: unknown) => {
+                // Belt-and-braces: runSync is contracted to return outcomes, never
+                // throw — but a throw must never leave the button stuck on
+                // "Downloading…" forever with no message.
+                syncBusy = false;
+                syncMessage =
+                  error instanceof Error ? `Sync failed. (${error.message})` : "Sync failed.";
+                paint();
+                void refreshReadiness(false);
+              });
           },
         }),
       );
diff --git a/src/app/notifications.ts b/src/app/notifications.ts
new file mode 100644
index 0000000..085c02a
--- /dev/null
+++ b/src/app/notifications.ts
@@ -0,0 +1,106 @@
+export type NotifyMode = "banner" | "browser" | "sound";
+
+interface WindowWithLegacyAudio extends Window {
+  webkitAudioContext?: typeof AudioContext;
+}
+
+function getPrefs(): NotifyMode[] {
+  try {
+    const raw = localStorage.getItem("lumen-notify-modes");
+    return raw ? (JSON.parse(raw) as NotifyMode[]) : ["banner", "browser"];
+  } catch {
+    return ["banner", "browser"];
+  }
+}
+
+function setPrefs(modes: NotifyMode[]): void {
+  localStorage.setItem("lumen-notify-modes", JSON.stringify(modes));
+}
+
+export function getEnabledModes(): NotifyMode[] {
+  return getPrefs();
+}
+
+export function toggleMode(mode: NotifyMode): NotifyMode[] {
+  const current = getPrefs();
+  const next = current.includes(mode) ? current.filter((m) => m !== mode) : [...current, mode];
+  setPrefs(next);
+  return next;
+}
+
+function showToast(msg: string): void {
+  const existing = document.getElementById("lumen-notification-banner");
+  if (existing) {
+    existing.textContent = msg;
+    existing.classList.add("notify-banner--visible");
+    window.setTimeout(() => {
+      existing.classList.remove("notify-banner--visible");
+    }, 4000);
+    return;
+  }
+  const toast = document.createElement("div");
+  toast.id = "lumen-notification-banner";
+  toast.textContent = msg;
+  toast.className = "notify-banner notify-banner--visible";
+  document.body.appendChild(toast);
+  window.setTimeout(() => {
+    toast.remove();
+  }, 4000);
+}
+
+export function notify(msg: string, modes?: NotifyMode[]): void {
+  const active = modes ?? getPrefs();
+  if (active.includes("banner")) {
+    showToast(msg);
+  }
+  if (active.includes("browser") && typeof Notification !== "undefined") {
+    if (Notification.permission === "granted") {
+      new Notification(msg);
+    } else if (Notification.permission !== "denied") {
+      void Notification.requestPermission().then((p) => {
+        if (p === "granted") new Notification(msg);
+      });
+    }
+  }
+  if (active.includes("sound")) {
+    try {
+      const Ctor = window.AudioContext ?? (window as WindowWithLegacyAudio).webkitAudioContext;
+      if (Ctor) {
+        const ctx = new Ctor();
+        if (ctx.state === "suspended") {
+          void ctx.resume();
+        }
+        const osc = ctx.createOscillator();
+        const gain = ctx.createGain();
+        osc.connect(gain);
+        gain.connect(ctx.destination);
+        osc.frequency.value = 1200;
+        gain.gain.value = 0.5;
+        osc.start();
+        osc.stop(ctx.currentTime + 0.3);
+      }
+    } catch {
+      // audio is best-effort — a blocked AudioContext must not eat the notification
+    }
+    // Visual pulse fallback for mobile browsers that block Web Audio / vibration
+    const pulse = document.createElement("div");
+    pulse.className = "notify-pulse";
+    document.body.appendChild(pulse);
+    window.setTimeout(() => {
+      pulse.remove();
+    }, 600);
+    if (typeof navigator.vibrate === "function") {
+      try {
+        navigator.vibrate([300, 100, 300, 100, 300]);
+      } catch (e) {
+        console.warn("vibrate blocked", e);
+      }
+    }
+  }
+}
+
+export function requestBrowserPermission(): void {
+  if (typeof Notification !== "undefined" && Notification.permission !== "granted") {
+    void Notification.requestPermission();
+  }
+}
diff --git a/src/app/styles.css b/src/app/styles.css
index 0d35296..11c8c78 100644
--- a/src/app/styles.css
+++ b/src/app/styles.css
@@ -962,3 +962,149 @@ html.dark .app-main__icon {
   color: var(--muted);
   font-size: 0.875rem;
 }
+
+/* Notification banner that appears at top of app */
+.notify-banner {
+  position: fixed;
+  top: calc(var(--header-h, 56px) + 1rem);
+  left: 50%;
+  transform: translateX(-50%) translateY(-20px);
+  background: var(--accent, #c8473a);
+  color: #fff;
+  padding: 0.75rem 1.25rem;
+  border-radius: 999px;
+  font-weight: 600;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
+  opacity: 0;
+  visibility: hidden;
+  transition:
+    opacity 0.25s ease,
+    transform 0.25s ease,
+    visibility 0.25s;
+  z-index: 1000;
+  pointer-events: none;
+  font-size: 0.9rem;
+}
+
+.notify-banner--visible {
+  opacity: 1;
+  visibility: visible;
+  transform: translateX(-50%) translateY(0);
+}
+
+.settings-view {
+  padding: 1rem;
+  max-width: 42rem;
+  margin: 0 auto;
+}
+
+.settings-section {
+  margin-bottom: 2rem;
+}
+
+.settings-section h2 {
+  font-size: 1.1rem;
+  margin-bottom: 0.5rem;
+}
+
+.settings-section p {
+  color: var(--fg-muted, #888);
+  margin-bottom: 1rem;
+}
+
+.settings-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 0.75rem 0;
+  border-bottom: 1px solid var(--border, #ddd);
+}
+
+.settings-row__label {
+  display: flex;
+  flex-direction: column;
+  gap: 0.15rem;
+}
+
+.settings-row__label strong {
+  font-size: 1rem;
+}
+
+.settings-row__label small {
+  color: var(--fg-muted, #888);
+  font-size: 0.8rem;
+}
+
+.toggle-btn {
+  min-width: 60px;
+  min-height: 36px;
+  padding: 0.5rem 1rem;
+  border: 1px solid var(--border, #ccc);
+  border-radius: 999px;
+  background: var(--surface, #f0f0f0);
+  color: var(--fg, #000);
+  font-weight: 700;
+  cursor: pointer;
+  transition:
+    background-color 0.2s ease,
+    color 0.2s ease;
+}
+
+.toggle-btn--on {
+  background: var(--accent, #c8473a);
+  color: #fff;
+  border-color: var(--accent, #c8473a);
+}
+
+.settings-test-btn {
+  display: block;
+  margin: 1.5rem auto 0;
+  padding: 0.75rem 1.5rem;
+  border: none;
+  border-radius: 999px;
+  background: var(--accent, #c8473a);
+  color: #fff;
+  font-weight: 600;
+  font-size: 1rem;
+  cursor: pointer;
+}
+
+.settings-test-btn:hover {
+  opacity: 0.9;
+}
+
+.notify-pulse {
+  position: fixed;
+  inset: 0;
+  background: rgba(200, 71, 58, 0.25);
+  pointer-events: none;
+  z-index: 9999;
+  animation: pulseFlash 0.6s ease-out forwards;
+}
+
+@keyframes pulseFlash {
+  0% {
+    opacity: 1;
+  }
+  100% {
+    opacity: 0;
+  }
+}
+.emergency-share-btn {
+  display: block;
+  margin: 0.75rem 0;
+  padding: 0.75rem 1.25rem;
+  width: 100%;
+  border: none;
+  border-radius: var(--radius);
+  background: var(--accent);
+  color: #fff;
+  font-weight: 700;
+  font-size: 1rem;
+  cursor: pointer;
+  text-align: center;
+}
+.emergency-share-btn:hover {
+  opacity: 0.9;
+}
diff --git a/src/app/sync.ts b/src/app/sync.ts
index 1917f6d..f094716 100644
--- a/src/app/sync.ts
+++ b/src/app/sync.ts
@@ -13,7 +13,7 @@
  */
 import { HttpTransport } from "../sync/transport/http.js";
 import { TransportError } from "../sync/transport/types.js";
-import { pullCandidate } from "../sync/pull.js";
+import { pullCandidate, type PullProgress } from "../sync/pull.js";
 import { publicKeyFromDerBase64 } from "../sync/verifier/ed25519.js";
 import type { TrustedKeySet } from "../sync/verifier/types.js";
 import { stageVerifiedPackage, activateStagedPackage } from "../sync/activation.js";
@@ -44,6 +44,7 @@ export interface SyncRunDeps {
   readonly appVersion?: string;
   readonly supportedSchemaRange?: readonly number[];
   readonly onPhase?: (phase: "checking" | "downloading" | "activating") => void;
+  readonly onProgress?: (done: number, total: number | null, label: string) => void;
 }
 
 function isSyncConfig(value: unknown): value is SyncConfig {
@@ -66,14 +67,21 @@ export function defaultConfigUrl(): string {
 export async function loadSyncConfig(
   fetchImpl: typeof fetch,
   url: string = defaultConfigUrl(),
+  timeoutMs = 10_000,
 ): Promise<SyncConfig | null> {
+  const controller = new AbortController();
+  const timeout = setTimeout(() => {
+    controller.abort();
+  }, timeoutMs);
   try {
-    const res = await fetchImpl(url, { cache: "no-store" });
+    const res = await fetchImpl(url, { cache: "no-store", signal: controller.signal });
     if (!res.ok) return null;
     const value: unknown = await res.json();
     return isSyncConfig(value) ? value : null;
   } catch {
     return null;
+  } finally {
+    clearTimeout(timeout);
   }
 }
 
@@ -124,8 +132,25 @@ export async function runSync(deps: SyncRunDeps = {}): Promise<SyncOutcome> {
   }
   if (trusted.size === 0) return { status: "not-configured", detail: "no trusted keys pinned" };
 
-  const transport = new HttpTransport(config.origin, { fetchImpl });
-  const user = await openUserDB();
+  const transport = (() => {
+    try {
+      return new HttpTransport(config.origin, { fetchImpl });
+    } catch (error) {
+      return { error: describeError(error) } as const;
+    }
+  })();
+  if ("error" in transport) {
+    return {
+      status: "error",
+      detail: `bad sync origin (${transport.error}) — the hub must serve HTTPS, e.g. node scripts/serve-demo.mjs`,
+    };
+  }
+  let user;
+  try {
+    user = await openUserDB();
+  } catch (error) {
+    return { status: "error", detail: `local storage unavailable (${describeError(error)})` };
+  }
   try {
     deps.onPhase?.("checking");
     const outcome = await pullCandidate(
@@ -139,6 +164,13 @@ export async function runSync(deps: SyncRunDeps = {}): Promise<SyncOutcome> {
       },
       {
         isQuarantined: (packageVersion) => isQuarantined(user, config.edition, packageVersion),
+        ...(deps.onProgress
+          ? {
+              onProgress: (progress: PullProgress): void => {
+                deps.onProgress?.(progress.done, progress.total, progress.label);
+              },
+            }
+          : {}),
       },
     );
 
diff --git a/src/domain/readiness/config.ts b/src/domain/readiness/config.ts
index 4a24975..3c58234 100644
--- a/src/domain/readiness/config.ts
+++ b/src/domain/readiness/config.ts
@@ -7,7 +7,7 @@
  * Current shell version (semver). Must match package.json — enforced by test.
  * Published datasets declare appCompatibility against this.
  */
-export const APP_VERSION = "0.1.0";
+export const APP_VERSION = "0.1.1";
 
 /**
  * Schema versions this shell can render. C-23: shells ship the range first
diff --git a/src/emergency-baseline/generated.ts b/src/emergency-baseline/generated.ts
index 296b5bd..2a57e5d 100644
--- a/src/emergency-baseline/generated.ts
+++ b/src/emergency-baseline/generated.ts
@@ -7,25 +7,50 @@ import type { EmergencyFloor } from "./types.js";
 
 export const EMERGENCY_FLOOR: EmergencyFloor = {
   floor: true,
-  floorVersion: "1.0.0+3",
+  floorVersion: "1.0.0+1",
   emergencySchemaVersion: 1,
-  generatedAt: "2026-08-27T09:00:00Z",
-  sourceContentVersion: 3,
+  generatedAt: "2026-10-05T16:10:42.201Z",
+  sourceContentVersion: 5,
   services: {
     emergencyNumber: "911",
-    security: { phone: "+1-555-0142", location: "Main Gate Kiosk" },
-    firstAid: { location: "Behind Stage B", hours: "10:00–02:00" },
+    security: {
+      phone: "+1-555-0100",
+      location: "Ask event staff or venue personnel",
+    },
+    firstAid: {
+      location: "Ask event staff or venue personnel",
+    },
   },
   address: {
-    lines: ["123 Festival Way", "Austin, TX 78701"],
-    coordinates: { lat: 30.2672, lon: -97.7431 },
+    lines: ["Son's Blue River Camp", "2769 Sherrill Rd", "Kingsbury, TX 78638"],
+    coordinates: {
+      lat: 29.6488,
+      lon: -97.8247,
+    },
   },
-  musterPoints: [{ name: "North Field" }],
-  exits: [{ name: "East Gate" }],
-  aedSummary: "AEDs: 1 locations",
+  musterPoints: [],
+  exits: [],
+  aedSummary: "AED on site",
   procedures: [
-    { id: "weather", title: "Severe Weather", steps: ["Seek shelter", "Follow staff"] },
-    { id: "medical", title: "Medical Emergency", steps: ["Call 911", "Locate first aid"] },
+    {
+      id: "weather",
+      title: "Severe Weather",
+      steps: [
+        "Seek appropriate shelter",
+        "Follow event staff instructions",
+        "Call 911 only when event help isn't available.",
+      ],
+    },
+    {
+      id: "medical",
+      title: "Medical Emergency",
+      steps: [
+        "Tell event staff or venue personnel",
+        "Go to or call for first aid",
+        "Keep access clear for responders",
+        "If you can't reach event staff or first aid, call 911.",
+      ],
+    },
   ],
 };
 
diff --git a/src/platform/sw/register.ts b/src/platform/sw/register.ts
index 89878ca..7e05484 100644
--- a/src/platform/sw/register.ts
+++ b/src/platform/sw/register.ts
@@ -14,7 +14,9 @@ export async function registerSW(): Promise<SWRegistrationResult> {
     return { status: "unsupported" };
   }
 
-  // Do not block app boot — register after load, catch errors.
+  // Unregister all existing service workers first to ensure clean update
+  await unregisterAllServiceWorkers();
+
   try {
     const reg = await navigator.serviceWorker.register("/sw.js", { scope: "/" });
     return { status: "registered", registration: reg };
diff --git a/src/sync/pull.ts b/src/sync/pull.ts
index c49c999..7dfabc1 100644
--- a/src/sync/pull.ts
+++ b/src/sync/pull.ts
@@ -1,7 +1,7 @@
 import type { LatestPointer } from "../data/festival-package/types.js";
 import { verifyPackage } from "./verifier/package.js";
 import type { VerifyDependencies, VerifyResult } from "./verifier/types.js";
-import type { Transport } from "./transport/types.js";
+import { TransportError, type Transport } from "./transport/types.js";
 
 export interface CandidatePackage {
   readonly pointer: LatestPointer;
@@ -16,6 +16,29 @@ export interface QuarantineSkipped {
 
 export type PullOutcome = CandidatePackage | QuarantineSkipped | null;
 
+export interface PullProgress {
+  /** Files fully fetched so far (manifest + signature + sections + assets). */
+  readonly done: number;
+  /** Total files when known (unknown until the manifest + assets inventory load). */
+  readonly total: number | null;
+  readonly label: string;
+}
+
+function isRetryable(error: unknown): boolean {
+  if (!(error instanceof TransportError)) return false;
+  // 404/malformed/aborted mean "don't bother asking again". Timeouts,
+  // dropped connections and 5xx often clear on a festival box between waves.
+  return (
+    error.code === "timeout" || error.code === "network_unavailable" || error.code === "http_error"
+  );
+}
+
+function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms);
+  });
+}
+
 function siblingUrl(manifestUrl: string, name: string): string {
   if (/^[a-z][a-z\d+.-]*:/i.test(manifestUrl)) return new URL(name, manifestUrl).toString();
   return new URL(name, `https://transport.invalid${manifestUrl}`).pathname;
@@ -38,8 +61,31 @@ export async function pullCandidate(
     readonly signal?: AbortSignal;
     readonly timeoutMs?: number;
     readonly isQuarantined?: (packageVersion: number) => Promise<boolean>;
+    /** Per-file retries on timeout/network/5xx (default 3). Total wait stays bounded. */
+    readonly retries?: number;
+    /** File-granular progress so the UI never looks stuck on a busy hub. */
+    readonly onProgress?: (progress: PullProgress) => void;
   } = {},
 ): Promise<PullOutcome> {
+  const retries = options.retries ?? 3;
+  let done = 0;
+  const report = (total: number | null, label: string): void => {
+    options.onProgress?.({ done, total, label });
+  };
+  async function fetchWithRetry(path: string, label: string): Promise<Uint8Array> {
+    // oxlint-disable-next-line no-await-in-loop -- sequential retry with backoff is intentional
+    for (let attempt = 0; ; attempt++) {
+      try {
+        const bytes = await transport.fetchBytes(path, options);
+        done += 1;
+        report(null, label);
+        return bytes;
+      } catch (error) {
+        if (attempt >= retries || !isRetryable(error)) throw error;
+        await sleep(300 * (attempt + 1));
+      }
+    }
+  }
   if (!transport.isAvailable()) return null;
   const pointer = await transport.fetchPointer(edition, options);
   if (!pointer) return null;
@@ -47,10 +93,10 @@ export async function pullCandidate(
     return { skipped: "quarantined", pointer };
   }
   const manifestUrl = pointer.manifestUrl;
-  const manifestBytes = await transport.fetchBytes(manifestUrl, options);
-  const signatureBytes = await transport.fetchBytes(
+  const manifestBytes = await fetchWithRetry(manifestUrl, "manifest");
+  const signatureBytes = await fetchWithRetry(
     siblingUrl(manifestUrl, "signature.json"),
-    options,
+    "signature",
   );
   let signature: unknown;
   try {
@@ -63,7 +109,7 @@ export async function pullCandidate(
       manifestBytes,
       signature,
       files: {
-        getFile: (path) => transport.fetchBytes(siblingUrl(manifestUrl, path), options),
+        getFile: (path) => fetchWithRetry(siblingUrl(manifestUrl, path), path),
       },
       // Pointer identity lets pre-manifest rejections (bad signature) still
       // quarantine under the right edition/version — otherwise the no-loop
diff --git a/src/sync/transport/http.ts b/src/sync/transport/http.ts
index b5abc91..b23ab8b 100644
--- a/src/sync/transport/http.ts
+++ b/src/sync/transport/http.ts
@@ -48,7 +48,10 @@ export class HttpTransport implements Transport {
   constructor(baseUrl: string | URL, options: HttpTransportOptions = {}) {
     this.baseUrl = new URL(baseUrl);
     if (this.baseUrl.protocol !== "https:")
-      throw new TransportError("malformed_response", "HTTP transport requires HTTPS");
+      throw new TransportError(
+        "malformed_response",
+        `HTTP transport requires HTTPS (got ${this.baseUrl.protocol}//${this.baseUrl.host}) — serve the hub with node scripts/serve-demo.mjs, not plain HTTP`,
+      );
     const raw = options.fetchImpl ?? fetch;
     // Native fetch rejects a non-Window receiver ("Illegal invocation") —
     // calling this.fetchImpl(url) would pass the transport as `this`. Bind it.
@@ -57,8 +60,11 @@ export class HttpTransport implements Transport {
   }
 
   isAvailable(): boolean {
-    if (typeof navigator === "undefined") return true;
-    return navigator.onLine;
+    // Deliberately NOT gated on navigator.onLine: an isolated festival LAN
+    // box has no upstream internet, so browsers report "offline" while the
+    // origin is fully reachable. A truly dead network fails fast at fetch
+    // time (network_unavailable) instead of hanging the UI.
+    return true;
   }
 
   async fetchPointer(
diff --git a/src/ui/router/router.ts b/src/ui/router/router.ts
index 2658427..7b88ffd 100644
--- a/src/ui/router/router.ts
+++ b/src/ui/router/router.ts
@@ -4,7 +4,8 @@
  * Trace: IMPLEMENTATION-CONTRACT.md §7, ARCHITECTURE-DESIGN.md:207
  */
 
-export type RouteId = "home" | "emergency" | "schedule" | "map" | "festival" | "not-found";
+export type RouteId =
+  "home" | "emergency" | "schedule" | "map" | "festival" | "settings" | "not-found";
 
 export interface Route {
   id: RouteId;
@@ -21,6 +22,7 @@ export const ROUTES: readonly Route[] = [
   { id: "emergency", path: "/emergency", label: "Emergency", title: "Emergency" },
   { id: "schedule", path: "/schedule", label: "Schedule", title: "Schedule" },
   { id: "map", path: "/map", label: "Map", title: "Map" },
+  { id: "settings", path: "/settings", label: "Settings", title: "Settings" },
   { id: "festival", path: "/festival", label: "Information", title: "Information" },
 ] as const;
 
diff --git a/src/ui/views/emergency/emergency.ts b/src/ui/views/emergency/emergency.ts
index c369058..c4f10a8 100644
--- a/src/ui/views/emergency/emergency.ts
+++ b/src/ui/views/emergency/emergency.ts
@@ -136,6 +136,25 @@ export function createEmergencyView(
   urgent.append(text("p", "Tap to call. The number is also selectable for copying."));
   section.append(urgent);
 
+  const shareBtn = document.createElement("button");
+  shareBtn.className = "emergency-share-btn";
+  shareBtn.textContent = "Share emergency info";
+  shareBtn.setAttribute("aria-label", "Share emergency information with others");
+  shareBtn.onclick = () => {
+    const textToShare = `Emergency: ${services.emergencyNumber}\nAddress: ${address.lines.join(", ")}\nFirst Aid: ${services.firstAid.location || "See venue"}`;
+    if (navigator.share) {
+      navigator.share({ title: "Emergency info — Lumen", text: textToShare }).catch(() => {
+        /* user dismissed the share sheet */
+      });
+    } else {
+      navigator.clipboard?.writeText(textToShare).catch(() => {
+        /* clipboard blocked — the alert below still shows the text */
+      });
+      alert("Copied to clipboard: " + textToShare.slice(0, 80) + "...");
+    }
+  };
+  section.append(shareBtn);
+
   const contacts = document.createElement("section");
   contacts.setAttribute("aria-labelledby", "emergency-services-heading");
   contacts.append(heading("emergency-services-heading", "Contacts"));
diff --git a/src/ui/views/home/home.ts b/src/ui/views/home/home.ts
index f9913eb..c90fa1f 100644
--- a/src/ui/views/home/home.ts
+++ b/src/ui/views/home/home.ts
@@ -25,6 +25,7 @@ export function createHomeView(): HTMLElement {
   grid.className = "home-grid";
 
   for (const r of ROUTES) {
+    if (r.id === "settings") continue;
     const a = document.createElement("a");
     a.className = `home-tile${r.id === "emergency" ? " home-tile--emergency" : ""}`;
     a.href = r.path;
diff --git a/src/ui/views/settings/settings.ts b/src/ui/views/settings/settings.ts
new file mode 100644
index 0000000..532472f
--- /dev/null
+++ b/src/ui/views/settings/settings.ts
@@ -0,0 +1,89 @@
+import {
+  getEnabledModes,
+  toggleMode,
+  requestBrowserPermission,
+  notify,
+  type NotifyMode,
+} from "../../../app/notifications.js";
+
+export function renderSettings(): HTMLElement {
+  const el = document.createElement("div");
+  el.className = "settings-view";
+  el.setAttribute("aria-labelledby", "settings-heading");
+
+  const h1 = document.createElement("h1");
+  h1.id = "settings-heading";
+  h1.textContent = "Settings";
+  el.appendChild(h1);
+
+  // Request browser notification permission on open
+  requestBrowserPermission();
+
+  // Notification section
+  const section = document.createElement("section");
+  section.className = "settings-section";
+  const sectionTitle = document.createElement("h2");
+  sectionTitle.textContent = "Notifications";
+  section.appendChild(sectionTitle);
+
+  const desc = document.createElement("p");
+  desc.textContent = "Choose how you want to be notified when things change.";
+  section.appendChild(desc);
+
+  const modes: { id: NotifyMode; label: string; hint: string }[] = [
+    { id: "banner", label: "On-screen banner", hint: "Shows a message inside the app" },
+    {
+      id: "browser",
+      label: "Browser notification",
+      hint: "Pops up even if the tab is in the background",
+    },
+    { id: "sound", label: "Sound", hint: "Plays a short beep" },
+  ];
+
+  const enabled = getEnabledModes();
+
+  for (const m of modes) {
+    const row = document.createElement("div");
+    row.className = "settings-row";
+
+    const label = document.createElement("div");
+    label.className = "settings-row__label";
+    const strong = document.createElement("strong");
+    strong.textContent = m.label;
+    const hint = document.createElement("small");
+    hint.textContent = m.hint;
+    label.append(strong, hint);
+    row.appendChild(label);
+
+    const toggle = document.createElement("button");
+    toggle.className = "toggle-btn" + (enabled.includes(m.id) ? " toggle-btn--on" : "");
+    toggle.setAttribute("role", "switch");
+    toggle.setAttribute("aria-checked", String(enabled.includes(m.id)));
+    toggle.textContent = enabled.includes(m.id) ? "ON" : "OFF";
+
+    toggle.addEventListener("click", () => {
+      const next = toggleMode(m.id);
+      const isOn = next.includes(m.id);
+      toggle.classList.toggle("toggle-btn--on", isOn);
+      toggle.setAttribute("aria-checked", String(isOn));
+      toggle.textContent = isOn ? "ON" : "OFF";
+      notify("Toggled " + m.label + " " + (isOn ? "ON" : "OFF"), [m.id]);
+    });
+
+    row.appendChild(toggle);
+    section.appendChild(row);
+  }
+
+  el.appendChild(section);
+
+  // Test notification button
+  const testBtn = document.createElement("button");
+  testBtn.className = "settings-test-btn";
+  testBtn.textContent = "Send a test notification";
+  testBtn.addEventListener("click", () => {
+    notify("Test notification — all enabled methods fired");
+  });
+  el.appendChild(testBtn);
+
+  return el;
+}
diff --git a/src/ui/views/status/status.ts b/src/ui/views/status/status.ts
index 4fee8dd..43f2d75 100644
--- a/src/ui/views/status/status.ts
+++ b/src/ui/views/status/status.ts
@@ -170,6 +170,10 @@ export function createStatusView(
       );
       break;
     case "READY":
+      // READY must still be able to pull a newer published package;
+      // onGetData runs the sync flow ("You already have the latest"
+      // when there is nothing new).
+      buttons.append(actionButton("Check for updates", actions.onGetData));
       break;
   }
   buttons.append(actionButton("Check my data", actions.onCheckData));
diff --git a/tests/unit/app-sync.test.ts b/tests/unit/app-sync.test.ts
index 7e6ea2b..b9a0c5f 100644
--- a/tests/unit/app-sync.test.ts
+++ b/tests/unit/app-sync.test.ts
@@ -236,4 +236,16 @@ describe("app sync coordinator", () => {
     });
     expect(result.status).toBe("not-configured");
   });
+
+  it("returns an error outcome (never throws/hangs) for a plain-HTTP origin", async () => {
+    const origin = buildOrigin();
+    const httpConfig = { ...config(origin), origin: "http://10.144.0.221:8080/origin" };
+    const result = await runSync({
+      fetchConfig: async () => httpConfig,
+      fetchImpl: fakeFetch(origin),
+      appVersion: "1.0.0",
+    });
+    expect(result.status).toBe("error");
+    expect(result.status === "error" && result.detail).toContain("HTTPS");
+  });
 });
diff --git a/tests/unit/status.test.ts b/tests/unit/status.test.ts
index 6a5ecdf..5331083 100644
--- a/tests/unit/status.test.ts
+++ b/tests/unit/status.test.ts
@@ -72,6 +72,17 @@ describe("Status view", () => {
     expect(view.querySelectorAll(".status-check--ok")).toHaveLength(2);
   });
 
+  it("READY offers Check for updates wired to the sync flow", () => {
+    const a = actions();
+    const view = createStatusView(report(), a);
+    const btn = [...view.querySelectorAll("button")].find(
+      (b) => b.textContent === "Check for updates",
+    );
+    expect(btn).toBeTruthy();
+    btn?.dispatchEvent(new MouseEvent("click"));
+    expect(a.onGetData).toHaveBeenCalledTimes(1);
+  });
+
   it("PARTIAL enumerates missing and offers Continue setup", () => {
     const a = actions();
     const view = createStatusView(
diff --git a/tests/unit/sw.test.ts b/tests/unit/sw.test.ts
index aac8514..4bba849 100644
--- a/tests/unit/sw.test.ts
+++ b/tests/unit/sw.test.ts
@@ -119,12 +119,20 @@ describe("SW registration — page bridge", () => {
   it("registers /sw.js with scope / when supported", async () => {
     const mockReg = { scope: "/", waiting: null } as unknown as ServiceWorkerRegistration;
     const mockRegister = vi.fn().mockResolvedValue(mockReg);
+    const mockUnregister = vi.fn().mockResolvedValue(true);
     Object.defineProperty(globalThis, "navigator", {
-      value: { serviceWorker: { register: mockRegister } },
+      value: {
+        serviceWorker: {
+          register: mockRegister,
+          getRegistrations: vi.fn().mockResolvedValue([{ unregister: mockUnregister }]),
+        },
+      },
       writable: true,
       configurable: true,
     });
     const res = await registerSW();
+    // clean-update: any pre-existing worker is unregistered before re-registering
+    expect(mockUnregister).toHaveBeenCalled();
     expect(mockRegister).toHaveBeenCalledWith("/sw.js", { scope: "/" });
     expect(res.status).toBe("registered");
   });
@@ -132,7 +140,12 @@ describe("SW registration — page bridge", () => {
   it("returns failed when register throws (offline or HTTPS issue)", async () => {
     const mockRegister = vi.fn().mockRejectedValue(new Error("HTTPS required"));
     Object.defineProperty(globalThis, "navigator", {
-      value: { serviceWorker: { register: mockRegister } },
+      value: {
+        serviceWorker: {
+          register: mockRegister,
+          getRegistrations: vi.fn().mockResolvedValue([]),
+        },
+      },
       writable: true,
       configurable: true,
     });
diff --git a/tests/unit/transport.test.ts b/tests/unit/transport.test.ts
index cd237bc..ed2c3fb 100644
--- a/tests/unit/transport.test.ts
+++ b/tests/unit/transport.test.ts
@@ -48,10 +48,13 @@ describe("Stage 9 HttpTransport", () => {
     vi.restoreAllMocks();
   });
 
-  it("reports availability from the browser online hint without making a request", () => {
+  it("reports available even when the browser thinks it is offline (isolated LAN hub)", () => {
     expect(transport.isAvailable()).toBe(true);
     Object.defineProperty(navigator, "onLine", { configurable: true, value: false });
-    expect(transport.isAvailable()).toBe(false);
+    // A festival box has no upstream internet: onLine is false while the
+    // origin is reachable. Availability must not gate the attempt — a truly
+    // dead network fails fast at fetch time instead.
+    expect(transport.isAvailable()).toBe(true);
     expect(fetchImpl).not.toHaveBeenCalled();
   });
 
@@ -164,6 +167,49 @@ describe("Stage 9 pull and verifier boundary", () => {
     ).toBeGreaterThan(2);
   });
 
+  it("retries a transient network failure mid-download and reports progress", async () => {
+    const keys = generateTestKeyPair();
+    const built = buildPackage(makeValidInput(), { signWith: keys });
+    if (!built.ok || !built.pkg.signature) throw new Error("fixture build failed");
+    const manifestBytes = new TextEncoder().encode(canonicalJson(built.pkg.manifest));
+    const files = new Map<string, Uint8Array>();
+    files.set("/editions/lumen-2026/packages/1/manifest.json", manifestBytes);
+    files.set(
+      "/editions/lumen-2026/packages/1/signature.json",
+      new TextEncoder().encode(JSON.stringify(built.pkg.signature)),
+    );
+    for (const [name, file] of built.pkg.files)
+      files.set(`/editions/lumen-2026/packages/1/${name}`, file.canonicalBytes);
+    for (const asset of built.pkg.assets)
+      files.set(`/editions/lumen-2026/packages/1/${asset.file}`, asset.bytesContent);
+    let emergencyFailures = 1;
+    const seen: string[] = [];
+    const fetchImpl = vi.fn((input: RequestInfo | URL) => {
+      const url = inputUrl(input);
+      if (url.endsWith("/latest.json")) return Promise.resolve(response(pointer()));
+      if (url.endsWith("/emergency.json") && emergencyFailures > 0) {
+        emergencyFailures -= 1;
+        return Promise.reject(new TypeError("wifi hiccup"));
+      }
+      const body = files.get(new URL(url).pathname);
+      return Promise.resolve(body ? response(body) : response("missing", 404));
+    });
+    const result = await pullCandidate(
+      new HttpTransport("https://festival.example/", { fetchImpl }),
+      "lumen-2026",
+      {
+        trustedKeys: new Map([[keys.fingerprint, publicKeyFromDerBase64(keys.publicKeyDerBase64)]]),
+        appVersion: "1.0.0",
+        supportedSchemaRange: [1],
+      },
+      { onProgress: (progress) => seen.push(progress.label) },
+    );
+    if (!result || "skipped" in result) throw new Error("expected candidate");
+    expect(result.result.ok).toBe(true);
+    expect(emergencyFailures).toBe(0);
+    expect(seen).toContain("emergency.json");
+  });
+
   it("does not retrieve protected files when the signature gate fails", async () => {
     const keys = generateTestKeyPair();
     const built = buildPackage(makeValidInput(), { signWith: keys });
diff --git a/vite.config.ts b/vite.config.ts
index 8917292..e9ecf65 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -24,10 +24,11 @@ function lumenShellPlugin(): Plugin {
       const version = `${pkg.version}-${gitHash}`;
       const cacheName = `lumen-shell-${version}`;
 
-      // Collect hashed assets produced by this build
+      // Collect hashed assets produced by this build — sourcemaps excluded:
+      // they bloat the install (~580KB) and the SW would cache-first them.
       const assetsDir = join(dist, "assets");
       const assetFiles = existsSync(assetsDir) ? readdirSync(assetsDir) : [];
-      const hashedAssets = assetFiles.map((f) => `/assets/${f}`);
+      const hashedAssets = assetFiles.filter((f) => !f.endsWith(".map")).map((f) => `/assets/${f}`);
 
       // Core shell URLs that must be precached (deterministic list per build)
       const core = [