diff --git a/packages/app/src/components/session/session-new-view.tsx b/packages/app/src/components/session/session-new-view.tsx
index b0df2b278..f3c7d4081 100644
--- a/packages/app/src/components/session/session-new-view.tsx
+++ b/packages/app/src/components/session/session-new-view.tsx
@@ -10,7 +10,7 @@ import { amicodeGet } from "@/utils/amicode-fetch"
 import { parseProblemsResponse } from "@opencode-ai/ui/amicode-problem-switcher"
 import { Icon } from "@opencode-ai/ui/icon"
 import { AmicodeGettingStarted } from "@opencode-ai/ui/amicode-getting-started"
-import { MarkDetailed } from "@opencode-ai/ui/logo"
+import { Logo, MarkDetailed } from "@opencode-ai/ui/logo"
 import { getDirectory, getFilename } from "@opencode-ai/core/util/path"
 
 const MAIN_WORKTREE = "main"
@@ -79,18 +79,9 @@ export function NewSessionView(props: NewSessionViewProps) {
         <div class="w-full max-w-200 flex flex-col items-center text-center gap-4">
           <div class="flex flex-col items-center gap-6">
             <MarkDetailed class="w-28" />
-            {/* amicode: straight wordmark (the Logo's Racing Sans One face reads as
-                italic); byline keeps the brand attribution. */}
-            <div
-              style={{
-                "font-size": "34px",
-                "font-weight": "700",
-                "letter-spacing": "0.1em",
-                color: "var(--v2-text-text-base)",
-              }}
-            >
-              AMICODE
-            </div>
+            {/* amicode: brand wordmark in the brand typeface (Racing Sans One — restored per review);
+                MarkDetailed is the redesign's detailed mark (kept from trunk) */}
+            <Logo class="w-56 max-w-full" />
           </div>
           {/* amicode: getting-started block (tagline + how-it-works + starter chips) */}
           <AmicodeGettingStarted
diff --git a/packages/app/src/pages/home.tsx b/packages/app/src/pages/home.tsx
index 3ca9e08e4..880f8697b 100644
--- a/packages/app/src/pages/home.tsx
+++ b/packages/app/src/pages/home.tsx
@@ -63,6 +63,7 @@ import { type ServerHealth } from "@/utils/server-health"
 import { amicodeGet, amicodePost } from "@/utils/amicode-fetch"
 import { AmicodeRunGallery } from "@opencode-ai/ui/amicode-run-gallery"
 import { AmicodeOnboardingWizard, shouldShowWizard } from "@opencode-ai/ui/amicode-onboarding-wizard"
+import { AmicodeSolverToggle } from "@opencode-ai/ui/amicode-solver-toggle"
 import { parseRunCardsResponse } from "@opencode-ai/ui/amicode-run-card"
 import { AmicodeHomeCards, parseProfileResponse, type HomeLiveRun } from "@opencode-ai/ui/amicode-home-cards"
 import { parseRunSeriesResponse } from "@opencode-ai/ui/amicode-run-window"
@@ -696,6 +697,10 @@ function HomeDesign() {
         </div>
         {/* Cards: full width across, sized to content so they never scroll */}
         <div class="relative z-[1] flex-none pt-1">
+          {/* solver mode (show-only v1, spec-20260709-093000): right-aligned above the cards */}
+          <div style={{ display: "flex", "justify-content": "flex-end", "margin-bottom": "8px" }}>
+            <AmicodeSolverToggle />
+          </div>
           <AmicodeHomeCards
             profile={profileView()}
             onStart={startWithPrompt}
diff --git a/packages/ui/src/amicode/solver-toggle.test.ts b/packages/ui/src/amicode/solver-toggle.test.ts
new file mode 100644
index 000000000..3638b68f6
--- /dev/null
+++ b/packages/ui/src/amicode/solver-toggle.test.ts
@@ -0,0 +1,30 @@
+import { describe, expect, test } from "bun:test"
+import { loadSolverMode, saveSolverMode } from "./solver-toggle"
+
+const mem = () => {
+  const m = new Map<string, string>()
+  return { getItem: (k: string) => m.get(k) ?? null, setItem: (k: string, v: string) => void m.set(k, v) }
+}
+
+describe("solver mode persistence", () => {
+  test("defaults to piccolo; hp round-trips; garbage → piccolo", () => {
+    const s = mem()
+    expect(loadSolverMode(s)).toBe("piccolo")
+    saveSolverMode("hp", s)
+    expect(loadSolverMode(s)).toBe("hp")
+    s.setItem("amicode-solver-mode", "nonsense")
+    expect(loadSolverMode(s)).toBe("piccolo")
+  })
+  test("storage failures fail soft", () => {
+    const broken = {
+      getItem: () => {
+        throw new Error("nope")
+      },
+      setItem: () => {
+        throw new Error("nope")
+      },
+    }
+    expect(loadSolverMode(broken)).toBe("piccolo")
+    expect(() => saveSolverMode("hp", broken)).not.toThrow()
+  })
+})
diff --git a/packages/ui/src/amicode/solver-toggle.tsx b/packages/ui/src/amicode/solver-toggle.tsx
new file mode 100644
index 000000000..89e906489
--- /dev/null
+++ b/packages/ui/src/amicode/solver-toggle.tsx
@@ -0,0 +1,102 @@
+import { createSignal } from "solid-js"
+
+// AMICODE: solver mode toggle — SHOW-ONLY v1 (spec-20260709-093000). Presents
+// the future High-Performance path (Piccolissimo splines + Altissimo GPU
+// solver on Harmoniqs cloud) as a selectable mode so demos can tell the story
+// today. It deliberately changes NOTHING about solves: the future wiring is
+// the scores schema's `executor: "cloud-altissimo" | local` seam, and the
+// existing `issimo` entitlement tier becomes the subscription gate.
+
+export type SolverMode = "piccolo" | "hp"
+const KEY = "amicode-solver-mode"
+
+export function loadSolverMode(storage: Pick<Storage, "getItem"> = localStorage): SolverMode {
+  try {
+    return storage.getItem(KEY) === "hp" ? "hp" : "piccolo"
+  } catch {
+    return "piccolo"
+  }
+}
+
+export function saveSolverMode(mode: SolverMode, storage: Pick<Storage, "setItem"> = localStorage): void {
+  try {
+    storage.setItem(KEY, mode)
+  } catch {
+    /* storage unavailable — selection just won't persist */
+  }
+}
+
+export function AmicodeSolverToggle() {
+  const [mode, setMode] = createSignal<SolverMode>(loadSolverMode())
+  const pick = (m: SolverMode) => {
+    setMode(m)
+    saveSolverMode(m)
+  }
+  const seg = (active: boolean): Record<string, string> => ({
+    display: "inline-flex",
+    "align-items": "center",
+    gap: "6px",
+    padding: "5px 12px",
+    "font-size": "12px",
+    "font-weight": active ? "650" : "450",
+    border: "none",
+    cursor: "pointer",
+    background: active ? "color-mix(in srgb, var(--v2-icon-icon-accent) 14%, transparent)" : "transparent",
+    color: active ? "var(--v2-text-text-base)" : "var(--v2-text-text-muted)",
+  })
+  return (
+    <div
+      data-component="amicode-solver-toggle"
+      title="Preview — GPU cloud solver rolling out"
+      style={{ display: "flex", "align-items": "center", gap: "10px" }}
+    >
+      <span
+        style={{
+          "font-size": "10px",
+          "font-weight": "700",
+          "letter-spacing": "0.08em",
+          "text-transform": "uppercase",
+          color: "var(--v2-text-text-faint)",
+        }}
+      >
+        Solver
+      </span>
+      <div
+        style={{
+          display: "inline-flex",
+          border: mode() === "hp" ? "1px solid var(--v2-icon-icon-accent)" : "1px solid var(--v2-border-border-base)",
+          "border-radius": "8px",
+          overflow: "hidden",
+          transition: "border-color 0.15s ease",
+        }}
+      >
+        <button
+          type="button"
+          data-slot="amicode-solver-piccolo"
+          style={seg(mode() === "piccolo")}
+          onClick={() => pick("piccolo")}
+        >
+          Piccolo
+        </button>
+        <button type="button" data-slot="amicode-solver-hp" style={seg(mode() === "hp")} onClick={() => pick("hp")}>
+          <span aria-hidden="true">⚡</span>
+          Piccolissimo + Altissimo
+          <span
+            style={{
+              "font-size": "9px",
+              "font-weight": "750",
+              "letter-spacing": "0.06em",
+              padding: "1px 5px",
+              "border-radius": "4px",
+              background: "var(--v2-icon-icon-accent)",
+              color: "var(--v2-background-bg-base, #000)",
+            }}
+          >
+            PRO
+          </span>
+        </button>
+      </div>
+      <span style={{ "font-size": "11px", color: "var(--v2-text-text-faint)" }}>High Performance Solver</span>
+    </div>
+  )
+}
diff --git a/packages/ui/src/components/amicode-solver-toggle.tsx b/packages/ui/src/components/amicode-solver-toggle.tsx
new file mode 100644
index 000000000..994f5e084
--- /dev/null
+++ b/packages/ui/src/components/amicode-solver-toggle.tsx
@@ -0,0 +1,2 @@
+// AMICODE: re-export shim (wildcard export path) — logic in ../amicode/solver-toggle.tsx.
+export { AmicodeSolverToggle, loadSolverMode, saveSolverMode, type SolverMode } from "../amicode/solver-toggle"
diff --git a/packages/ui/src/components/logo.tsx b/packages/ui/src/components/logo.tsx
index f0d1b7b5a..ff2f1411d 100644
--- a/packages/ui/src/components/logo.tsx
+++ b/packages/ui/src/components/logo.tsx
@@ -109,9 +109,8 @@ export const Logo = (props: { class?: string }) => {
         dominant-baseline="central"
         textLength="230"
         lengthAdjust="spacingAndGlyphs"
-        font-family="var(--font-family-sans, ui-sans-serif, system-ui, -apple-system, sans-serif)"
-        font-weight="750"
-        letter-spacing="4"
+        font-family="'Racing Sans One', var(--font-family-mono, ui-monospace, monospace)"
+        font-weight="400"
         font-size="36"
         fill="var(--icon-base)"
       >