fix(06-08): the pump's accepted fixes ride the chain's surfaces — puck + freshness (G7c)

- during guidance the pump consumed fixes without refreshing the chain's
  surfaces: the puck froze at the boot fix while the camera rode the
  snapped line (the UI-SPEC's recorded call: 'the puck ... carr[ies]
  progress'), and lastFix stayed at boot so the strip's 45s staleness
  law falsely flipped SIGNAL LOST mid-drive and re-ran the chain
- one injected dep (updatePuck) composes both in main.ts: lastFix = fix,
  marker.update (the RAW fix — the camera rides the SNAPPED foot, the
  two-authorities-one-line law), marker.setStale(false); the camera is
  NOT touched (the guidance camera owns the viewport — the guard
  handleLive already keeps)
- G7c pins the dep call per accepted fix + the main.ts source-scan for
  the marker composition (the RS2 boot-wiring shape)
- found while building the real-drive gate: any drive past 45s would
  have hit both defects on the road
- web 148/148, typecheck clean; captures regenerated 20/20

web/test/route-surface.test.mjs

@@ -968,6 +968,9 @@ function steppedDeps(opts = {}) {
     sourceCalls: [],
     followModes: [],
     fetches: [],
+    /** 06-08 G7c: the pump's per-fix puck/freshness dep recordings. */
+    puckFixes: [],
+    puckStale: [],
     fetchMode: "ok", // "ok" | "404" — the idempotent-delete tolerance flip
   };
   // every source.route call is recorded (the exactly-one-request gates)
@@ -997,6 +1000,12 @@ function steppedDeps(opts = {}) {
   };
   deps.nowMs = () => guide.now;
   deps.findGantry = (banner) => findByClass(banner, "guide-gantry");
+  // 06-08 G7c: the puck/freshness dep — main.ts composes marker.update +
+  // setStale(false); the fake records both surfaces for the gate.
+  deps.updatePuck = (fix) => {
+    guide.puckFixes.push(fix);
+    guide.puckStale.push(false);
+  };
   // the envelope endpoint + an injectable recording fetch (the stubFetch of
   // the plan's acceptance) — every envelope call lands in guide.fetches
   deps.endpoint = "/api/guidance";
@@ -1330,6 +1339,27 @@ test("G7b the confirm card survives a live fix — the D-09 surface never evicts
   });
 });
 
+test("G7c the pump's fixes ride the chain's surfaces — puck + freshness per accepted fix", async () => {
+  await withDocumentAsync(async () => {
+    const deps = steppedDeps();
+    const controller = createRouteController(deps);
+    await driveTo(deps, controller);
+    const puckBefore = deps.__guide.puckFixes.length;
+    feed(900, { deps, advanceMs: 6000 });
+    await drain();
+    assert.equal(deps.__guide.puckFixes.length, puckBefore + 1, "every accepted fix reaches the puck");
+    assert.equal(deps.__guide.puckFixes.at(-1).lat, onLineFix(900, deps.__guide.now).lat, "the puck rides the RAW fix (the camera rides the snapped foot)");
+    assert.equal(deps.__guide.puckStale.at(-1), false, "the marker's stale flag clears while fixes flow");
+    // main.ts's wiring composes the REAL surfaces (the RS2 source-scan shape):
+    // marker.update + setStale(false) — the freshness axis rides the same dep
+    const mainCode = codeText(path.join(SRC, "main.ts"));
+    assert.ok(
+      /updatePuck:\s*\(fix\)\s*=>\s*\{[\s\S]{0,300}?marker\.update\(map, fix\)[\s\S]{0,200}?marker\.setStale\(false\)/.test(mainCode),
+      "main.ts's updatePuck must compose marker.update + setStale(false) — the puck carries progress (the UI-SPEC recorded call) and the chain's freshness axis stays live while driving",
+    );
+  });
+});
+
 test("G8 arrival — the machine's arrival effect runs the same teardown", async () => {
   await withDocumentAsync(async () => {
     const deps = steppedDeps();