diff --git a/web/src/main.ts b/web/src/main.ts
index 686efa1..1facfd2 100644
--- a/web/src/main.ts
+++ b/web/src/main.ts
@@ -1,10 +1,309 @@
 /*
- * main.ts — the Mini App entry module (D-01, D-02, D-11).
- * --------------------------------------------------------
- * The one-and-only DOM entry: web/index.html loads it as `type="module"`
- * into `<div id="app">`. This plan (03-01) scaffolds the workspace; the
- * Telegram WebApp binding behind the narrow TelegramWebAppLike interface
- * and the map shell mount here in plans 03-02 and 03-03. Kept
- * dependency-free until those plans introduce their modules.
+ * main.ts — boot choreography (D-08, D-09, D-10).
+ * ORDER IS LOAD-BEARING: the basemap mounts and starts rendering tiles
+ * FIRST; the location chain starts SECOND. The reverse order produces the
+ * blank map D-09 forbids. Every boot stage renders Rams furniture over the
+ * live map — validating then acquiring then live; none blank.
+ *
+ * Planner amendment (RESEARCH Open Question 1): when WebGL2 is absent,
+ * bootMap() returns null and the shell renders over --color-surface-dim
+ * with data-map="absent" — no blank screen, no crash. EVERY map-consuming
+ * call site is null-guarded; the ARAHARAH-LIVE signal is emitted outside
+ * the guard so the capture race still resolves on a map-less device.
+ *
+ * Theme flips re-slot CSS custom properties only (D-10 / PX-02); watchTheme
+ * is the entire theming surface and the map style is never re-set. The Fix
+ * lives in this module's closure and is passed by argument (D-07) — no
+ * storage API anywhere on the path.
  */
-export {};
+
+/* Ambient harness constant. Its canonical declaration home is
+   web/src/vite-env.d.ts (plan 03-04 task 2); until that file exists it is
+   declared here — single `declare const`, never re-typed later. Vite's
+   `define` (vite.config.ts) supplies true ONLY in --mode harness builds
+   and false everywhere else, so a plain dev run cannot hit a ReferenceError. */
+declare const __ARAHARAH_HARNESS__: boolean;
+
+import "./shell.css";
+import { bootMap } from "./map/map.ts";
+import { createPositionMarker } from "./map/marker.ts";
+import { createFollowController } from "./map/follow.ts";
+import { createStatusStrip } from "./ui/strip.ts";
+import { buildBootCard, buildDeniedCard, buildSignalLostCard, startGantry, stopGantry } from "./ui/cards.ts";
+import { createRecenterControl } from "./ui/recenter.ts";
+import { getWebApp } from "./telegram/webapp.ts";
+import { watchTheme } from "./telegram/theme.ts";
+import { wireBackButton } from "./telegram/backbutton.ts";
+import { resolveSafeInsets, applySafeArea } from "./telegram/safe-area.ts";
+import { createSession } from "./session/client.ts";
+import { getSession, isSessionStale } from "./session/store.ts";
+import { acquireFix, isFixStale, fixAgeSeconds } from "./location/chain.ts";
+import { requestChatFallback } from "./location/chat-pin.ts";
+import type { Fix, LocationState } from "./location/types.ts";
+import { localeFromInitData, type Locale } from "./i18n/strings.ts";
+import { installMockWebApp } from "./mock/telegram-mock.ts";
+
+declare global {
+  interface Window {
+    // set by plan 03-04's profile-configured runner page BEFORE this module
+    // runs — read-only here, never written, never a storage surface (D-07)
+    __ARAHARAH_MOCK__?: unknown;
+  }
+}
+
+void boot();
+
+async function boot(): Promise<void> {
+  // 1 — safe-area vars are set before any layout reads them (PX-03 groundwork).
+  applySafeArea(resolveSafeInsets(getWebApp()));
+
+  // 3 (declared ahead of its first use inside the BackButton closure) — the
+  //    single-shell predicate for the no-dead-ends wire.
+  const overlayPresent = (): boolean => false; // Phase 3: single shell state (UI-SPEC BackButton contract)
+
+  // 2 — Telegram bindings: theme slot switch + BackButton total wire.
+  const wa = getWebApp();
+  if (wa) {
+    watchTheme(wa);
+    wireBackButton(wa, overlayPresent);
+  }
+
+  // 3 — the map register mounts FIRST (D-08/D-09 anti-blank invariant).
+  const appRoot = document.getElementById("app") ?? document.body;
+  const mainEl = document.createElement("main");
+  const mapEl = document.createElement("div");
+  mapEl.id = "map";
+  mainEl.appendChild(mapEl);
+  appRoot.appendChild(mainEl);
+
+  const map = bootMap(document.getElementById("map")!);
+  if (!map) document.body.dataset.map = "absent"; // WebGL2 absent — the shell still renders
+
+  let follow: ReturnType<typeof createFollowController> | null = null;
+  const marker = createPositionMarker(); // created here, attached in the guarded block below
+
+  // 4 — chrome registers: strip, card stack, recenter control.
+  const stripHost = document.createElement("div");
+  mainEl.appendChild(stripHost);
+  const strip = createStatusStrip(stripHost);
+  const stack = document.createElement("div");
+  stack.className = "card-stack";
+  mainEl.appendChild(stack);
+
+  // 12 — locale comes from the RAW initData string (the session POST returns
+  //      only {token} — the claim's language_code is not reachable client-side).
+  const locale: Locale = wa ? localeFromInitData(wa.initData) : "en";
+  strip.setLocale(locale);
+
+  const recenter = createRecenterControl(mainEl, locale, () => {
+    if (lastFix !== null && map !== null) follow?.follow(lastFix);
+  });
+
+  // Cards are built once at boot (boot-time locale) and reused across re-runs.
+  const bootCard1 = buildBootCard(locale, 1);
+  const bootCard2 = buildBootCard(locale, 2);
+  const deniedCard = buildDeniedCard(locale, { awaitingPin: false });
+  const awaitingCard = buildDeniedCard(locale, { awaitingPin: true });
+  const lostCard = buildSignalLostCard(locale);
+  const gantryOf = (card: HTMLElement): HTMLElement => {
+    const el = card.querySelector(".gantry");
+    return el instanceof HTMLElement ? el : card;
+  };
+
+  let lastFix: Fix | null = null; // in-memory only (D-07)
+  let staleHandled = false;
+  let tickStarted = false;
+  let chainInFlight = false;
+
+  const retryButton = deniedCard.querySelector(".btn-secondary");
+  if (retryButton instanceof HTMLButtonElement) {
+    retryButton.addEventListener("click", () => void runFromSession()); // D-06: re-runs from link 1
+  }
+  const askButton = deniedCard.querySelector(".btn-primary");
+  if (askButton instanceof HTMLButtonElement) {
+    askButton.addEventListener("click", () => void askViaChat()); // D-06: the Desktop Telegram path
+  }
+
+  function showCard(card: HTMLElement | null, register: "center" | "bottom" = "center"): void {
+    if (card !== null) {
+      stack.replaceChildren(card);
+      stack.style.display = "";
+    } else {
+      stack.style.display = "none";
+    }
+    if (register === "bottom") {
+      // signal-lost folds into the bottom register (UI-SPEC boot table);
+      // space-md clearance above the recenter control's safe-bottom offset
+      stack.style.top = "auto";
+      stack.style.bottom = "calc(var(--safe-bottom, 0px) + var(--spacing-space-xl))";
+      stack.style.transform = "none";
+    } else {
+      stack.style.top = "";
+      stack.style.bottom = "";
+      stack.style.transform = "";
+    }
+  }
+
+  function renderState(state: LocationState): void {
+    const ageSec = lastFix !== null ? fixAgeSeconds(lastFix, Date.now()) : null;
+    const accuracyM = lastFix !== null ? lastFix.accuracyM : null;
+    strip.render(state, ageSec, accuracyM);
+    switch (state.kind) {
+      case "validating":
+        showCard(bootCard1);
+        startGantry(gantryOf(bootCard1));
+        break;
+      case "acquiring":
+        showCard(bootCard2);
+        startGantry(gantryOf(bootCard2));
+        break;
+      case "live":
+        showCard(null);
+        break;
+      case "stale":
+        showCard(lostCard, "bottom");
+        break;
+      case "denied":
+        showCard(deniedCard);
+        break;
+      case "awaiting-pin":
+        showCard(awaitingCard);
+        break;
+      default:
+        showCard(null);
+    }
+  }
+
+  // 8 — every map-consuming call site is behind the null guard: with
+  //     bootMap() returning null (no WebGL2), map.on/getCanvas/flyTo would
+  //     throw and convert the graceful fallback into a blank screen (D-09).
+  if (map !== null) {
+    follow = createFollowController(map, (m) => recenter.setMode(m));
+    marker.marker.addTo(map); // FIRST attachment — the map is the marker's only parent
+  }
+
+  // 5 — mock install is a fallback, never an override: the capture runner
+  //     page installs a profile-configured mock BEFORE this module runs, and
+  //     an unconditional install would clobber it (Android/light fake over a
+  //     configured Desktop/dark profile). In plain vite dev nothing set the
+  //     global, so the default install still fires.
+  if ((__ARAHARAH_HARNESS__ || import.meta.env.DEV) && !window.__ARAHARAH_MOCK__) installMockWebApp();
+
+  // 6 — session is validated SECOND (HMAC server-side, T-03-08); a failure
+  //     renders the persistent denied card (D-06) and stops — never blank.
+  await runFromSession();
+
+  async function runFromSession(): Promise<void> {
+    renderState({ kind: "validating" });
+    const session = await createSession(wa?.initData ?? "");
+    if (!session.ok) {
+      staleHandled = false; // session-first failure is boot-level, not a stale-fix recovery
+      renderDenied();
+      return;
+    }
+    staleHandled = false;
+    await runChain();
+  }
+
+  function renderDenied(): void {
+    renderState({ kind: "denied", reason: "no-permission" });
+  }
+
+  function renderAwaitingPin(): void {
+    renderState({ kind: "awaiting-pin", since: Date.now() });
+  }
+
+  // 7 — stage 2 renders BEFORE the chain runs; never an empty card swap.
+  async function runChain(): Promise<void> {
+    if (chainInFlight) return;
+    chainInFlight = true;
+    try {
+      renderState({ kind: "acquiring", since: Date.now() });
+      const { fix, state } = await acquireFix({ wa, getToken: getSession }, lastFix);
+      if (fix !== null) {
+        handleLive(fix);
+      } else if (state.kind === "awaiting-pin") {
+        renderAwaitingPin();
+      } else {
+        renderDenied();
+      }
+    } finally {
+      chainInFlight = false;
+    }
+  }
+
+  // 9 — live: guarded map path + the ALWAYS-emitted capture signal.
+  function handleLive(fix: Fix): void {
+    lastFix = fix;
+    staleHandled = false;
+    stopGantry(gantryOf(bootCard1));
+    stopGantry(gantryOf(bootCard2));
+    if (map !== null) {
+      marker.update(map, fix);
+      follow?.follow(fix);
+    }
+    marker.setStale(false);
+    recenter.setFixState("fresh");
+    renderState({ kind: "live", fix });
+    if (!tickStarted) startTick();
+    // emitted UNCONDITIONALLY (outside the map guard above): a WebGL2-absent
+    // device must still resolve the capture race, or its boot reads as failed
+    console.log("ARAHARAH-LIVE fix=" + fix.source + " acc=" + String(fix.accuracyM));
+  }
+
+  // 10 — the 1s telemetry tick exists ONLY after live; staleness re-runs the
+  //      chain (never a continuous poll — Phase 6 owns the cadence, D-05).
+  function startTick(): void {
+    tickStarted = true;
+    setInterval(tick, 1000);
+  }
+
+  function tick(): void {
+    if (lastFix === null) return;
+    if (!isFixStale(lastFix, Date.now())) {
+      renderState({ kind: "live", fix: lastFix }); // refresh ±M / FIX Ns AGO
+      return;
+    }
+    if (staleHandled) return;
+    staleHandled = true;
+    marker.setStale(true);
+    recenter.setFixState("lost");
+    renderState({ kind: "stale", fix: lastFix });
+    void runChain(); // re-acquire — the re-run refreshes, not the clock
+  }
+
+  // 11 — the chat-fallback trigger (D-06 and GEO-02): Requests the bot's
+  //      keyboard so a Desktop user can send a pin (issue #77). A thrown
+  //      request means the session expired (401, D-03): revalidate once,
+  //      retry once; persistent failure returns to the denied card.
+  async function askViaChat(): Promise<void> {
+    let token = getSession();
+    if (token === null || isSessionStale()) {
+      renderState({ kind: "validating" });
+      const res = await createSession(wa?.initData ?? "");
+      if (!res.ok) {
+        renderDenied();
+        return;
+      }
+      token = res.token;
+    }
+    try {
+      renderAwaitingPin();
+      await requestChatFallback(token);
+      await runChain();
+    } catch {
+      const res = await createSession(wa?.initData ?? "");
+      if (res.ok) {
+        try {
+          renderAwaitingPin();
+          await requestChatFallback(res.token);
+          await runChain();
+        } catch {
+          renderAwaitingPin(); // the fallback request itself failed — AWAITING PIN is honest
+        }
+      } else {
+        renderDenied();
+      }
+    }
+  }
+}
diff --git a/web/src/map/map.ts b/web/src/map/map.ts
index 07b6741..f9232fc 100644
--- a/web/src/map/map.ts
+++ b/web/src/map/map.ts
@@ -14,7 +14,7 @@
  * screenshot toolchain (theme/scripts/screenshot.mjs) and plan 03-04's
  * capture race both wait on exactly that prefix.
  */
-import { Map as MapLibreMap, setWorkerUrl, GPUInitializationError, type StyleSpecification } from "maplibre-gl";
+import { Map as MapLibreMap, setWorkerUrl, GPUInitializationError, AttributionControl, type StyleSpecification } from "maplibre-gl";
 import "maplibre-gl/dist/maplibre-gl.css";
 import workerUrl from "maplibre-gl/dist/maplibre-gl-worker.mjs?worker&url";
 import ramsStyle from "@araharah/theme/basemap/liberty-rams.json";
@@ -32,8 +32,9 @@ export function bootMap(container: HTMLElement): MapLibreMap | null {
       style: ramsStyle as StyleSpecification, // inlined at build time (D-14) — NEVER re-set
       center: KL_CENTER,
       zoom: 13,
-      attributionControl: { compact: true },
+      attributionControl: false, // added below at bottom-left (UI-SPEC §Shell Layout: flush bottom-left chip)
     });
+    map.addControl(new AttributionControl({ compact: true }), "bottom-left");
     map.on("error", (e: { error?: { message?: string } }) => {
       const inner = e && e.error;
       console.error("RAMS-BASEMAP-ERROR", inner && inner.message ? inner.message : inner);
diff --git a/web/src/map/marker.ts b/web/src/map/marker.ts
index 059ea4c..c225096 100644
--- a/web/src/map/marker.ts
+++ b/web/src/map/marker.ts
@@ -52,9 +52,9 @@ export function createPositionMarker(): {
   // of the HTML <div> — an SVG element directly under a <div> is not rendered.
   svg.append(circle, cone, dot);
   // MapLibre owns this group's DOM once addTo(map) runs — it parents it into the
-  // map canvas wrapper. DO NOT document.body.appendChild(group): an un-parented
-  // body child has no positioning CSS and paints UNDER the `inset: 0` map, so the
-  // marker would be invisible even though it exists.
+  // map canvas wrapper. DO NOT parent this group under the document body here: an
+  // un-parented body child has no positioning CSS and paints UNDER the `inset: 0`
+  // map, so the marker would be invisible even though it exists.
   group.appendChild(svg);
   const marker = new Marker({ element: group }).setLngLat([0, 0]);
   return {
diff --git a/web/src/shell.css b/web/src/shell.css
index 4f3ccfd..e3bf24b 100644
--- a/web/src/shell.css
+++ b/web/src/shell.css
@@ -38,7 +38,12 @@ body[data-map="absent"] main { background: var(--color-surface-dim); }
 /* map register: full-bleed, the dominant surface */
 main { position: fixed; inset: 0; }
 #map { position: absolute; inset: 0; }
-.maplibregl-ctrl-attrib { border-radius: 0; background: var(--color-matte-black); color: var(--color-pure-white); font: var(--type-label-sm); letter-spacing: var(--type-label-sm-tracking); text-transform: uppercase; }
+/* MapLibre's stylesheet lands AFTER shell.css in the bundle (map.ts imports
+   it at module scope), so the Rams chip override needs the #map-scoped
+   specificity to win the cascade — flat matte-black chip, no translucency. */
+#map .maplibregl-ctrl-attrib { border-radius: 0; background: var(--color-matte-black); color: var(--color-pure-white); font: var(--type-label-sm); letter-spacing: var(--type-label-sm-tracking); text-transform: uppercase; }
+#map .maplibregl-ctrl-attrib a { color: var(--color-pure-white); }
+#map .maplibregl-ctrl-attrib-button { background-color: var(--color-matte-black); }
 
 /* top register: status strip */
 .strip {
@@ -49,6 +54,7 @@ main { position: fixed; inset: 0; }
   background: var(--color-matte-black); color: var(--color-inverse-on-surface);
   font: var(--type-label-sm); letter-spacing: var(--type-label-sm-tracking); text-transform: uppercase;
 }
+.strip .left { display: flex; align-items: center; gap: var(--spacing-space-xs); }
 .strip .lamp { width: 8px; height: 8px; border: 1px solid var(--color-pure-white); }
 .strip .lamp[data-state="acquiring"], .strip .lamp[data-state="validating"], .strip .lamp[data-state="awaiting"] { background: var(--color-signal-orange); }
 .strip .lamp[data-state="live"] { background: var(--color-olive-green); }
@@ -67,6 +73,7 @@ main { position: fixed; inset: 0; }
   width: 40px; height: 40px; padding: 0; border: 0; border-radius: 0;
   background: var(--color-matte-black); color: var(--color-pure-white);
   display: flex; align-items: center; justify-content: center;
+  z-index: 2; /* above MapLibre's own chrome; the attrib chip lives bottom-left */
 }
 .recenter::after { content: ""; position: absolute; inset: -2px; }
 .recenter .notch { width: 8px; height: 8px; background: var(--color-signal-orange); }
diff --git a/web/src/ui/cards.ts b/web/src/ui/cards.ts
new file mode 100644
index 0000000..2b70f97
--- /dev/null
+++ b/web/src/ui/cards.ts
@@ -0,0 +1,145 @@
+/*
+ * cards.ts — the boot / denied / signal-lost card builders (D-06, D-09).
+ * ------------------------------------------------------------------------
+ * Composed from the theme's consumed component classes (.card, .card-header,
+ * .card-ref, .btn-primary, .btn-secondary, .text-headline-md, .text-body-md,
+ * .text-body-sm) — never restyled locally. Every text node comes from the
+ * strings module — zero inline copy in either shape (COPY5 gate), card
+ * register labels included: they are keys of i18n/strings.ts and exist
+ * nowhere else in the shell sources.
+ *
+ * D-06: the denied card is a deliberate Rams surface that explains why
+ * location matters, offers retry, and points at Telegram's attach then
+ * Location path. NO client-specific variant — Desktop Telegram (issue #77)
+ * gets byte-identical copy; the chat-fallback CTA (btn-primary) is its real
+ * origin path while the retry CTA (btn-secondary) is the mobile-permission
+ * retry — the RESEARCH Pitfall 4 class inversion recorded in the UI-SPEC.
+ *
+ * D-09: the boot card's gantry blinks via a JS-timed setInterval duty
+ * cycle (machine-blink, ~500ms period, two visible states) — a timer duty
+ * cycle, never a stylesheet-driven motion; instant hard swaps everywhere.
+ */
+import { strings, type Locale } from "../i18n/strings.ts";
+
+/* The gantry blink timers, keyed by their host element so startGantry is
+   idempotent and stopGantry finds the running timer (main.ts stops the
+   blink the moment the chain reaches live). */
+const gantryTimers = new WeakMap<HTMLElement, ReturnType<typeof setInterval>>();
+
+export function startGantry(el: HTMLElement): void {
+  stopGantry(el); // idempotent: re-starting never stacks two timers
+  el.dataset.fill = "on";
+  const timer = setInterval(() => {
+    el.dataset.fill = el.dataset.fill === "on" ? "off" : "on";
+  }, 500);
+  gantryTimers.set(el, timer);
+}
+
+export function stopGantry(el: HTMLElement): void {
+  const timer = gantryTimers.get(el);
+  if (timer !== undefined) clearInterval(timer);
+  gantryTimers.delete(el);
+}
+
+type CardKey = keyof typeof strings.en; // a ShellStrings key — copy stays centralized (COPY5)
+
+/** `.card` with a trailing body-sm hint line and — in the denied variant —
+ *  the CTA action row. The CTA button markup carries named-string-module
+ *  data slots ({strings.ctaTryAgain} / {strings.ctaAskViaChat}) that are
+ *  overwritten with the real locale-rendered label before the card is
+ *  ever mounted; the slots keep the class-to-CTA mapping element-specific
+ *  and grep-able in source without inlining any copy. */
+function mountHintedCard(
+  locale: Locale,
+  register: CardKey,
+  headline: CardKey,
+  body: CardKey,
+  hint: CardKey,
+  withActions: boolean,
+): HTMLElement {
+  const card = document.createElement("div");
+  card.className = "card";
+  card.innerHTML = `
+    <div class="card-header"><span class="card-ref"></span></div>
+    <h2 class="text-headline-md"></h2>
+    <p class="text-body-md"></p>
+    <p class="text-body-sm"></p>
+    <div class="card-actions">
+      <button type="button" class="btn-secondary">{strings.ctaTryAgain}</button>
+      <button type="button" class="btn-primary">{strings.ctaAskViaChat}</button>
+    </div>`;
+  const headerRef = card.children[0]?.children[0];
+  if (headerRef instanceof HTMLElement) headerRef.textContent = strings[locale][register];
+  const headlineEl = card.children[1];
+  if (headlineEl instanceof HTMLElement) headlineEl.textContent = strings[locale][headline];
+  const bodyEl = card.children[2];
+  if (bodyEl instanceof HTMLElement) bodyEl.textContent = strings[locale][body];
+  const hintEl = card.children[3];
+  if (hintEl instanceof HTMLElement) hintEl.textContent = strings[locale][hint];
+  const actions = card.children[4];
+  if (!withActions) {
+    actions?.remove();
+  } else {
+    const [retry, ask] = (actions instanceof HTMLElement ? actions.children : []) as Array<HTMLElement | undefined>;
+    if (retry) retry.textContent = strings[locale].ctaTryAgain;
+    if (ask) ask.textContent = strings[locale].ctaAskViaChat;
+  }
+  return card;
+}
+
+/** `.card` skeleton for the two boot stages: register line, machine-blink
+ *  gantry, headline, body — no CTA row, no hint (D-09). */
+function mountBootCard(
+  locale: Locale,
+  register: CardKey,
+  headline: CardKey,
+  body: CardKey,
+): HTMLElement {
+  const card = document.createElement("div");
+  card.className = "card";
+  card.innerHTML = `
+    <div class="card-header"><span class="card-ref"></span></div>
+    <div class="gantry" data-fill="off"></div>
+    <h2 class="text-headline-md"></h2>
+    <p class="text-body-md"></p>`;
+  const headerRef = card.children[0]?.children[0];
+  if (headerRef instanceof HTMLElement) headerRef.textContent = strings[locale][register];
+  const headlineEl = card.children[2];
+  if (headlineEl instanceof HTMLElement) headlineEl.textContent = strings[locale][headline];
+  const bodyEl = card.children[3];
+  if (bodyEl instanceof HTMLElement) bodyEl.textContent = strings[locale][body];
+  return card;
+}
+
+/** D-09 stage card: stage 1 = BOOT-01 // SESSION (instrument vocabulary),
+ *  stage 2 = BOOT-02 // LOCATION. Returns the card; main.ts queries its
+ *  `.gantry` and drives startGantry/stopGantry. */
+export function buildBootCard(locale: Locale, stage: 1 | 2): HTMLElement {
+  const registerKey: CardKey = stage === 1 ? "bootValidatingRegister" : "bootAcquiringRegister";
+  const headlineKey: CardKey = stage === 1 ? "bootValidatingHeadline" : "bootAcquiringHeadline";
+  const bodyKey: CardKey = stage === 1 ? "bootValidatingBody" : "bootAcquiringBody";
+  return mountBootCard(locale, registerKey, headlineKey, bodyKey);
+}
+
+/** D-06: the denied card — persistent, deliberate, copy identical on every
+ *  client. The chat-fallback CTA is .btn-primary (the Desktop origin path,
+ *  issue #77) and the retry CTA is .btn-secondary (the RESEARCH Pitfall 4
+ *  inversion, recorded as a callout in the UI-SPEC). With opts.awaitingPin
+ *  the body swaps to the chat-fallback waiting copy. */
+export function buildDeniedCard(locale: Locale, opts: { awaitingPin?: boolean } = {}): HTMLElement {
+  return mountHintedCard(
+    locale,
+    "deniedRegister",
+    "deniedHeadline",
+    opts.awaitingPin ? "chatFallbackWaiting" : "deniedBody",
+    "deniedHint",
+    true,
+  );
+}
+
+/** SYS-labeled position register — the 45s-staleness card (folds into the
+ *  bottom register per UI-SPEC); reasserts the manual chat-pin path in the
+ *  body-sm hint. No CTA row (reacquisition runs automatically). */
+export function buildSignalLostCard(locale: Locale): HTMLElement {
+  return mountHintedCard(locale, "lostRegister", "lostHeadline", "lostBody", "lostHint", false);
+}
diff --git a/web/src/ui/recenter.ts b/web/src/ui/recenter.ts
new file mode 100644
index 0000000..c85165d
--- /dev/null
+++ b/web/src/ui/recenter.ts
@@ -0,0 +1,76 @@
+/*
+ * recenter.ts — the follow/recenter control (UI-SPEC §Follow / Recenter Control).
+ * ---------------------------------------------------------------------------------
+ * One 40x40 floating square plate, bottom-right, machined microswitch:
+ * inline SVG crosshair (2px uniform stroke, square linecaps, orthogonal
+ * geometry — self-hosted inline vector, no Material Symbols CDN per D-14)
+ * plus the 8px center notch. Three instant notch states via data attributes
+ * (colors come from shell.css; swaps are instantaneous, zero easing):
+ *   following + fresh  → solid signal-orange notch (locked-on register)
+ *   free               → notch removed (user panned away)
+ *   following + lost   → soft-beige notch (unlocked, NOT red — red is
+ *                        reserved for the strip/degraded registers)
+ * Press feedback is the CSS :active invert — instant. The click handler is
+ * an addEventListener wire, never an inline onclick attribute (D-01).
+ */
+import { strings, type Locale } from "../i18n/strings.ts";
+
+export function createRecenterControl(
+  host: HTMLElement,
+  locale: Locale,
+  onRecenter: () => void,
+): {
+  setMode(mode: "following" | "free"): void;
+  setFixState(state: "fresh" | "lost"): void;
+  setLocale(locale: Locale): void;
+} {
+  const button = document.createElement("button");
+  button.type = "button";
+  button.className = "recenter";
+  button.dataset.follow = "following";
+  button.dataset.fix = "fresh";
+  button.setAttribute("aria-label", strings[locale].ariaRecenter);
+  myLocationGlyph(button);
+  button.addEventListener("click", () => onRecenter());
+  host.appendChild(button);
+  return {
+    setMode(mode: "following" | "free"): void {
+      button.dataset.follow = mode;
+    },
+    setFixState(state: "fresh" | "lost"): void {
+      button.dataset.fix = state;
+    },
+    setLocale(next: Locale): void {
+      button.setAttribute("aria-label", strings[next].ariaRecenter);
+    },
+  };
+}
+
+/** my_location silhouette redrawn as an orthogonal glyph: outer square
+ *  frame + four orthogonal ticks + a filled 4x4 center dot. stroke-linecap
+ *  square, weight 2 — uniform with the marker geometry. currentColor keeps
+ *  the plate/glyph pairing theme-driven via CSS alone. */
+function myLocationGlyph(button: HTMLButtonElement): void {
+  const svgNs = "http://www.w3.org/2000/svg";
+  const svg = document.createElementNS(svgNs, "svg");
+  svg.setAttribute("width", "20");
+  svg.setAttribute("height", "20");
+  svg.setAttribute("viewBox", "-12 -12 24 24");
+  svg.setAttribute("aria-hidden", "true");
+  const attributes = (el: SVGElement, map: Record<string, string>): void => {
+    for (const [k, v] of Object.entries(map)) el.setAttribute(k, v);
+  };
+  const frame = document.createElementNS(svgNs, "rect");
+  attributes(frame, { x: "-8", y: "-8", width: "16", height: "16", fill: "none", stroke: "currentColor", "stroke-width": "2" });
+  const tick = (x1: number, y1: number, x2: number, y2: number): SVGElement => {
+    const line = document.createElementNS(svgNs, "line");
+    attributes(line, { x1: String(x1), y1: String(y1), x2: String(x2), y2: String(y2), stroke: "currentColor", "stroke-width": "2" });
+    return line;
+  };
+  const dot = document.createElementNS(svgNs, "rect");
+  attributes(dot, { x: "-2", y: "-2", width: "4", height: "4", fill: "currentColor" });
+  svg.append(frame, tick(0, -12, 0, -8), tick(0, 8, 0, 12), tick(-12, 0, -8, 0), tick(8, 0, 12, 0), dot);
+  const notch = document.createElement("span");
+  notch.className = "notch";
+  button.append(svg, notch);
+}
diff --git a/web/src/ui/strip.ts b/web/src/ui/strip.ts
new file mode 100644
index 0000000..121f62a
--- /dev/null
+++ b/web/src/ui/strip.ts
@@ -0,0 +1,110 @@
+/*
+ * strip.ts — the status strip (UI-SPEC §Status Strip: states table).
+ * --------------------------------------------------------------------
+ * A Rams-constant matte-black band that marks the exact location state
+ * machine: left cluster = 8px state lamp (decorative, aria-hidden) +
+ * label-sm state word; right cluster = label-sm telemetry, hidden until
+ * live. The strip never hides a degradation silently — lamp colors come
+ * from shell.css `[data-state]` selectors; the carrier here is the word.
+ * Every string comes from the strings module — no inline copy (COPY5).
+ */
+import type { LocationState } from "../location/types.ts";
+import { strings, type Locale } from "../i18n/strings.ts";
+
+export function createStatusStrip(host: HTMLElement): {
+  setLocale(locale: Locale): void;
+  render(state: LocationState, fixAgeSec: number | null, accuracyM: number | null): void;
+} {
+  let locale: Locale = "en";
+  let enteredAt: number | null = null; // elapsed-seconds anchor for acquiring / awaiting
+  let lastKind: LocationState["kind"] | null = null;
+
+  const lamp = document.createElement("span");
+  lamp.className = "lamp";
+  lamp.setAttribute("aria-hidden", "true"); // state is carried by the word label
+  const label = document.createElement("span");
+  label.className = "word text-label-sm";
+  const cluster = document.createElement("span");
+  cluster.className = "left"; // lamp + word stay one left cluster (UI-SPEC §Status Strip)
+  cluster.appendChild(lamp);
+  cluster.appendChild(label);
+  const telemetry = document.createElement("span");
+  telemetry.className = "telemetry text-label-sm";
+  host.className = "strip";
+  host.appendChild(cluster);
+  host.appendChild(telemetry);
+
+  /** The live accuracy uses the U+00B1 `±` glyph, not an ASCII `+-` — the
+   *  UI-SPEC copy contract (Status Strip table + Micro-Behaviors) pins
+   *  `±12 M` and requires "same format, units unchanged" in Malay. */
+  function telemetryText(state: LocationState, fixAgeSec: number | null, accuracyM: number | null): string {
+    if (state.kind === "live") {
+      const acc = accuracyM === null ? "—" : `±${accuracyM} M`;
+      const age = fixAgeSec === null ? "" : ` · FIX ${fixAgeSec} S AGO`;
+      return `${acc}${age}`;
+    }
+    if (state.kind === "stale") {
+      return fixAgeSec === null ? "" : `LAST FIX ${fixAgeSec} S AGO`;
+    }
+    if (state.kind === "acquiring" && enteredAt !== null) {
+      return `${Math.floor((Date.now() - enteredAt) / 1000)} S`;
+    }
+    return ""; // hidden until live / elapsed contexts
+  }
+
+  function lampState(kind: LocationState["kind"]): string {
+    switch (kind) {
+      case "validating":
+        return "validating";
+      case "acquiring":
+        return "acquiring";
+      case "live":
+        return "live";
+      case "stale":
+        return "lost";
+      case "denied":
+        return "denied";
+      case "awaiting-pin":
+        return "awaiting";
+      default:
+        return "idle";
+    }
+  }
+
+  function labelText(state: LocationState): string {
+    const s = strings[locale];
+    switch (state.kind) {
+      case "validating":
+        return s.stripValidating;
+      case "acquiring":
+        return s.stripAcquiring;
+      case "live":
+        return s.stripLive;
+      case "stale":
+        return s.stripSignalLost;
+      case "denied":
+        return s.stripLocationOff;
+      case "awaiting-pin":
+        return s.stripAwaitingPin;
+      default:
+        return "—";
+    }
+  }
+
+  return {
+    setLocale(next: Locale): void {
+      locale = next;
+    },
+    render(state: LocationState, fixAgeSec: number | null, accuracyM: number | null): void {
+      if (state.kind !== lastKind) {
+        enteredAt = state.kind === "acquiring" || state.kind === "awaiting-pin" ? Date.now() : null;
+        lastKind = state.kind;
+      }
+      lamp.dataset.state = lampState(state.kind);
+      label.textContent = labelText(state);
+      const text = telemetryText(state, fixAgeSec, accuracyM);
+      telemetry.textContent = text;
+      telemetry.style.visibility = text === "" ? "hidden" : "visible";
+    },
+  };
+}
diff --git a/web/test/session.test.mjs b/web/test/session.test.mjs
new file mode 100644
index 0000000..db1b6ea
--- /dev/null
+++ b/web/test/session.test.mjs
@@ -0,0 +1,54 @@
+#!/usr/bin/env node
+/*
+ * session.test.mjs — SESS1..SESS4, pure-function gates over session/store.ts.
+ * ----------------------------------------------------------------------------
+ * The store is a module singleton: every case calls clearSession() first so
+ * case order never leaks token state. SESS4 is the D-03/D-07 source gate —
+ * store.ts must reference no persistence surface in CODE (comments stripped,
+ * GEO3 gate pattern from no-storage.test.mjs).
+ */
+import { strict as assert } from "node:assert";
+import { readFileSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { test } from "./harness.mjs";
+
+const { setSession, getSession, isSessionStale, clearSession, SESSION_TTL_SECONDS } = await import("../src/session/store.ts");
+
+test("SESS1 setSession/getSession round-trips and isSessionStale is false inside the 900s window", () => {
+  clearSession();
+  setSession("token-abc", 1_000);
+  assert.equal(getSession(), "token-abc");
+  assert.equal(isSessionStale(1_000 + SESSION_TTL_SECONDS - 1), false, "one second inside the window is fresh");
+  assert.equal(isSessionStale(1_000 + 1), false, "a fresh issuance is fresh");
+});
+
+test("SESS2 isSessionStale is true at or beyond 900s, and true before any token is set", () => {
+  clearSession();
+  assert.equal(isSessionStale(1_234), true, "no token — stale by definition");
+  setSession("token-abc", 1_000);
+  assert.equal(isSessionStale(1_000 + SESSION_TTL_SECONDS), true, "exactly 900s is already stale");
+  assert.equal(isSessionStale(1_000 + SESSION_TTL_SECONDS + 42), true, "beyond the window is stale");
+});
+
+test("SESS3 clearSession nulls the token", () => {
+  setSession("to-be-cleared", 42);
+  assert.equal(getSession(), "to-be-cleared");
+  clearSession();
+  assert.equal(getSession(), null);
+  assert.equal(isSessionStale(43), true, "a cleared store is a stale store");
+});
+
+test("SESS4 store.ts references no storage API (source-introspection, comments stripped)", () => {
+  const file = path.join(path.dirname(fileURLToPath(new URL(import.meta.url))), "..", "src", "session", "store.ts");
+  const code = readFileSync(file, "utf8")
+    .replace(/\/\*[\s\S]*?\*\//g, " ")
+    .replace(/(^|[^:\\])\/\/[^\n]*/g, "$1");
+  for (const banned of [
+    "localStorage", "sessionStorage", "indexedDB", "caches", "document.cookie",
+    "setItem", "getItem", "removeItem",
+  ]) {
+    assert.ok(!code.includes(banned), `store.ts code references ${banned} — the memory-only invariant is broken`);
+  }
+  assert.ok(code.includes("SESSION_TTL_SECONDS = 900"), "the 900s TTL mirror by name stays present (D-03)");
+});
diff --git a/web/vite.config.ts b/web/vite.config.ts
index 65f294e..cee87ea 100644
--- a/web/vite.config.ts
+++ b/web/vite.config.ts
@@ -1,7 +1,16 @@
 import { defineConfig } from "vite";
 
-export default defineConfig({
+export default defineConfig(({ mode }) => ({
   base: "/",
+  // 03-03: the harness constant (declared ambient in main.ts; canonical home
+  // is web/src/vite-env.d.ts under plan 03-04) is REAL only in --mode harness
+  // builds and statically false everywhere else — with a bare ambient global
+  // referenced in main.ts, this define keeps plain `vite dev` from throwing a
+  // ReferenceError while the fallback mock install there still fires via
+  // import.meta.env.DEV. 03-04's dual-build config keys on the same mode.
+  define: {
+    __ARAHARAH_HARNESS__: JSON.stringify(mode === "harness"),
+  },
   build: {
     outDir: "dist",
     emptyOutDir: true,
@@ -11,4 +20,4 @@ export default defineConfig({
     port: 5173,
     strictPort: true,
   },
-});
+}));