diff --git a/web/index.html b/web/index.html
index 237927e..aad2eaa 100644
--- a/web/index.html
+++ b/web/index.html
@@ -9,7 +9,7 @@
 <body>
   <div id="app"></div>
   <script type="module">
-    /* D-11 Mock-Telegram profile: ?mock=android|ios|tdesktop|macos|web  +  ?scheme=light|dark  +  ?pin=1  +  ?locale=en|ms  +  ?fixdelay  +  ?sessiondelay  +  ?dest=<id>
+    /* D-11 Mock-Telegram profile: ?mock=android|ios|tdesktop|macos|web  +  ?scheme=light|dark  +  ?pin=1  +  ?locale=en|ms  +  ?fixdelay  +  ?sessiondelay  +  ?dest=<id>  +  ?fixpair=<pair-id>
        Harness-only: served from web/dist-harness, never deployed.
        The WHOLE block below is inside `if (__ARAHARAH_HARNESS__)` — Vite's `define`
        replaces that identifier with `false` in the production build, so the branch is
@@ -38,6 +38,22 @@
       const sessionDelayMs = Number.parseInt(q.get("sessiondelay") || "0", 10);
       const fixDelayMs = Number.parseInt(q.get("fixdelay") || "0", 10);
 
+      /* The 05-05 route profile (?fixpair=<pair-id>): the mock's Telegram fix
+       * becomes the PAIR'S PINNED PUBLIC ORIGIN, resolved from the committed
+       * fixture corpus through the harness-only route-profiles module (D-12 —
+       * the harness introduces no user coordinate; a ?lat/?lng knob is
+       * deliberately absent). An unknown pairId keeps the default fix — the
+       * boot must never wedge. The dynamic import lives inside this
+       * __ARAHARAH_HARNESS__ branch, so production dead-code-eliminates the
+       * module (BA5 greps web/dist for its sentinel). */
+      const fixpair = q.get("fixpair");
+      let telegramFix = { lat: 3.1513, lng: 101.6958, accuracyM: 12, headingDeg: null };
+      if (fixpair) {
+        const { getRouteProfileOrigin } = await import("/src/mock/route-profiles.ts");
+        const origin = getRouteProfileOrigin(fixpair);
+        if (origin) telegramFix = { lat: origin.lat, lng: origin.lng, accuracyM: 12, headingDeg: null };
+      }
+
       // Set BEFORE main.ts is imported — this is the marker main.ts's install guard checks.
       window.__ARAHARAH_MOCK__ = { profile, scheme, locale, dest };
 
@@ -73,7 +89,7 @@
         languageCode: locale,
         grantLocation: profile !== "tdesktop",
         deliveryDelayMs: fixDelayMs > 0 ? fixDelayMs : undefined,
-        telegramFix: { lat: 3.1513, lng: 101.6958, accuracyM: 12, headingDeg: null },
+        telegramFix,
         startParam: dest ?? undefined,
       });
     }
diff --git a/web/src/main.ts b/web/src/main.ts
index 153c494..c84e1d2 100644
--- a/web/src/main.ts
+++ b/web/src/main.ts
@@ -48,7 +48,7 @@ import { createFixtureRoutingSource } from "@araharah/routing/src/index.ts";
 import { createRouteController, type RouteState } from "./route/route.ts";
 import { buildRouteCard, buildRoutePendingCard } from "./route/route-card.ts";
 import { attachRouteEndpoints, removeRouteEndpoints } from "./route/route-markers.ts";
-import type { MapLike } from "./route/route-layers.ts";
+import { installRouteLayers, type MapLike } from "./route/route-layers.ts";
 
 declare global {
   interface Window {
@@ -97,8 +97,37 @@ async function boot(): Promise<void> {
   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
+  // The route consult waits on this: the harness session stubs resolve the
+  // location chain faster than WebGL/style init, so consult+setData could
+  // land BEFORE the map's load event — the draw would hit sources that do
+  // not exist yet and the empty post-load install would silently discard it
+  // (found by the 05-05 capture legs: card rendered, line never painted).
+  // Resolves in map.ts's ONE load handler, right after installRouteLayers;
+  // a cards-only boot (map === null) resolves immediately. The Promise
+  // executor runs synchronously, so the resolver is assigned before any
+  // caller below reaches it.
+  let resolveMapLayersReady!: () => void;
+  const mapLayersReady: Promise<void> = new Promise((res) => {
+    resolveMapLayersReady = res;
+  });
+  const map = bootMap(document.getElementById("map")!, {
+    // The route layers install at map load, inside the ONE load handler
+    // (after building-3d, before the ready log — map.ts hosts the hook).
+    // 05-05 capture-leg fix: without this callback the sources never exist
+    // and setRouteDrawn's setData silently no-ops — cards rendered, the
+    // line never painted (the fakes in the RS gates could not see it).
+    onLoad: (m) => {
+      try {
+        installRouteLayers(m as unknown as MapLike);
+      } finally {
+        resolveMapLayersReady(); // the consult never wedges, even on install failure
+      }
+    },
+  });
+  if (!map) {
+    document.body.dataset.map = "absent"; // WebGL2 absent — the shell still renders
+    resolveMapLayersReady(); // cards-only degradation: nothing to wait for
+  }
 
   let follow: ReturnType<typeof createFollowController> | null = null;
   const marker = createPositionMarker(); // created here, attached in the guarded block below
@@ -426,10 +455,11 @@ async function boot(): Promise<void> {
     // Auto-consult (the state-coexistence law): the fixture RoutingSource is
     // consulted ONCE per boot, only when the location chain is live AND a
     // destination resolved — destination-unavailable and no-destination
-    // boots never make a route request.
+    // boots never make a route request. The consult itself waits for the
+    // map's load (route sources installed) — see mapLayersReady above.
     if (destination !== null && !routeConsulted) {
       routeConsulted = true;
-      void routeController.consult(fix, destination);
+      void mapLayersReady.then(() => routeController.consult(fix, destination));
     }
     if (!tickStarted) startTick();
     // emitted UNCONDITIONALLY (outside the map guard above): a WebGL2-absent
diff --git a/web/src/mock/route-profiles.ts b/web/src/mock/route-profiles.ts
new file mode 100644
index 0000000..f37bc5b
--- /dev/null
+++ b/web/src/mock/route-profiles.ts
@@ -0,0 +1,31 @@
+/*
+ * route-profiles.ts — HARNESS-ONLY ?fixpair= origin lookup (05-05).
+ * ----------------------------------------------------------------------------
+ * D-12: the pinned origin is COMMITTED PUBLIC FIXTURE DATA. The pair corpus
+ * is public-data routes between public places (RT2b proves every origin
+ * equals a gazetteer landmark within 1e-4 deg), so the harness delivers no
+ * user coordinate — it re-delivers a coordinate that is already committed
+ * to the repo. The ?fixpair knob accepts a pairId ONLY; arbitrary lat/lng
+ * query params are never read (T-05-14: a coordinate-parameter knob would
+ * reintroduce the coordinate-in-URL surface the fixture world exists to
+ * avoid).
+ *
+ * BA-EXCLUSION: this module is imported ONLY from the index.html harness
+ * block, inside `if (__ARAHARAH_HARNESS__)` — Vite's define replaces that
+ * identifier with `false` in the production build, so the dynamic import is
+ * dead-code-eliminated and the module never ships. The
+ * ROUTE_PROFILE_HARNESS_ONLY sentinel below joins BA5's token scan: if this
+ * module ever leaks into web/dist, the build fails.
+ */
+import { getPairOrigin } from "@araharah/routing/src/index.ts";
+
+/** BA5 sentinel — must NEVER appear in any web/dist artifact. */
+export const ROUTE_PROFILE_HARNESS_ONLY = true;
+
+/** pairId -> the pair's pinned public origin, or null when the pairId is
+ *  unknown (the harness keeps its default fix — an unknown pairId must not
+ *  wedge the boot). Pure lookup over the committed corpus; the ONLY origin
+ *  source the harness can deliver. */
+export function getRouteProfileOrigin(pairId: string): { lat: number; lng: number } | null {
+  return getPairOrigin(pairId);
+}
diff --git a/web/test/route-surface.test.mjs b/web/test/route-surface.test.mjs
index 9cb4591..81dc317 100644
--- a/web/test/route-surface.test.mjs
+++ b/web/test/route-surface.test.mjs
@@ -142,6 +142,14 @@ test("RS2 map-law — zero setStyle in web/src/route; opts.onLoad sits after bui
   assert.ok(onLoad < ready, "the route install is BEFORE the RAMS-BASEMAP-READY log — sources exist when captures wait");
 });
 
+test("RS2 boot wiring — main.ts passes opts.onLoad to bootMap installing the route layers (05-05 capture fix)", () => {
+  const mainCode = codeText(path.join(SRC, "main.ts"));
+  assert.ok(
+    /bootMap\([\s\S]{0,400}?onLoad:\s*\(m\)\s*=>[\s\S]{0,200}?installRouteLayers\(/.test(mainCode),
+    "main.ts must wire bootMap's opts.onLoad to installRouteLayers — without the callback the sources never exist and setRouteDrawn's setData silently no-ops (cards render, the line never paints; found by the 05-05 capture legs)",
+  );
+});
+
 /* ————— RS3 — fake-map layer law ————— */
 
 test("RS3 fake-map layers — 2 sources + 4 layers in order, idempotent install, setData swaps, empty clears", () => {