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/plugin/provider-nvidia.test.ts

@@ -0,0 +1,99 @@
+import { describe, expect } from "bun:test"
+import { Effect } from "effect"
+import { Catalog } from "@opencode-ai/core/catalog"
+import { PluginV2 } from "@opencode-ai/core/plugin"
+import { ProviderPlugins } from "@opencode-ai/core/plugin/provider"
+import { NvidiaPlugin } from "@opencode-ai/core/plugin/provider/nvidia"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { expectPluginRegistered, it, provider } from "./provider-helper"
+
+describe("NvidiaPlugin", () => {
+  it.effect("is registered so legacy referer headers can be applied", () =>
+    Effect.sync(() =>
+      expectPluginRegistered(
+        ProviderPlugins.map((item) => item.id),
+        "nvidia",
+      ),
+    ),
+  )
+
+  it.effect("applies NVIDIA tracking headers only to nvidia", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const nvidia = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: { headers: { Existing: "value" }, body: {} },
+        })
+        catalog.provider.update(nvidia.id, (draft) => {
+          draft.api = nvidia.api
+          draft.request = nvidia.request
+        })
+        catalog.provider.update(provider("openrouter").id, () => {})
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        Existing: "value",
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "OpenCode",
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.openrouter)).request.headers).toEqual({})
+    }),
+  )
+
+  it.effect("adds billing origin for custom NVIDIA endpoints", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: { headers: {}, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "OpenCode",
+      })
+    }),
+  )
+
+  it.effect("preserves an explicit NVIDIA billing origin header", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(NvidiaPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("nvidia", {
+          api: { type: "aisdk", package: "@ai-sdk/openai-compatible", url: "https://integrate.api.nvidia.com/v1" },
+          request: {
+            headers: { "X-BILLING-INVOKE-ORIGIN": "CustomOrigin" },
+            body: { baseURL: "https://integrate.api.nvidia.com/v1" },
+          },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+
+      expect((yield* catalog.provider.get(ProviderV2.ID.make("nvidia"))).request.headers).toEqual({
+        "HTTP-Referer": "https://opencode.ai/",
+        "X-Title": "opencode",
+        "X-BILLING-INVOKE-ORIGIN": "CustomOrigin",
+      })
+    }),
+  )
+})