fix: 修正 logo 中 N 和 G 字母造型

N 添加对角线笔画（█▄ █），G 添加内横杠（█ ▀█），
避免与 O 字母造型雷同。同步更新 ui.ts 中的硬编码 wordmark。

packages/core/test/pty/ticket.test.ts

@@ -0,0 +1,59 @@
+import { describe, expect } from "bun:test"
+import { Effect, Layer } from "effect"
+import { PtyID } from "@opencode-ai/core/pty/schema"
+import { PtyTicket } from "@opencode-ai/core/pty/ticket"
+import { WorkspaceV2 } from "@opencode-ai/core/workspace"
+import { testEffect } from "../lib/effect"
+
+const it = testEffect(PtyTicket.layer)
+const itExpiring = testEffect(Layer.effect(PtyTicket.Service, PtyTicket.make(5)))
+
+describe("PTY websocket tickets", () => {
+  it.live("consumes tickets once", () =>
+    Effect.gen(function* () {
+      const tickets = yield* PtyTicket.Service
+      const scope = { ptyID: PtyID.ascending(), directory: "/tmp/a" }
+      const issued = yield* tickets.issue(scope)
+
+      expect(yield* tickets.consume({ ...scope, ticket: issued.ticket })).toBe(true)
+      expect(yield* tickets.consume({ ...scope, ticket: issued.ticket })).toBe(false)
+    }),
+  )
+
+  it.live("rejects tickets scoped to a different request", () =>
+    Effect.gen(function* () {
+      const tickets = yield* PtyTicket.Service
+      const ptyID = PtyID.ascending()
+      const issued = yield* tickets.issue({ ptyID, directory: "/tmp/a" })
+
+      expect(yield* tickets.consume({ ptyID, directory: "/tmp/b", ticket: issued.ticket })).toBe(false)
+      expect(yield* tickets.consume({ ptyID, directory: "/tmp/a", ticket: issued.ticket })).toBe(true)
+    }),
+  )
+
+  itExpiring.live("rejects tickets after the TTL elapses", () =>
+    Effect.gen(function* () {
+      const tickets = yield* PtyTicket.Service
+      const ptyID = PtyID.ascending()
+      const issued = yield* tickets.issue({ ptyID })
+
+      yield* Effect.promise(() => new Promise((resolve) => setTimeout(resolve, 25)))
+
+      expect(yield* tickets.consume({ ptyID, ticket: issued.ticket })).toBe(false)
+    }),
+  )
+
+  it.live("rejects tickets scoped to a different workspace", () =>
+    Effect.gen(function* () {
+      const tickets = yield* PtyTicket.Service
+      const ptyID = PtyID.ascending()
+      const workspaceID = WorkspaceV2.ID.ascending()
+      const issued = yield* tickets.issue({ ptyID, workspaceID })
+
+      expect(yield* tickets.consume({ ptyID, workspaceID: WorkspaceV2.ID.ascending(), ticket: issued.ticket })).toBe(
+        false,
+      )
+      expect(yield* tickets.consume({ ptyID, workspaceID, ticket: issued.ticket })).toBe(true)
+    }),
+  )
+})