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-anthropic.test.ts

@@ -0,0 +1,97 @@
+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 { AnthropicPlugin } from "@opencode-ai/core/plugin/provider/anthropic"
+import { ProviderV2 } from "@opencode-ai/core/provider"
+import { it, model, provider } from "./provider-helper"
+
+describe("AnthropicPlugin", () => {
+  it.effect("applies legacy beta headers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(AnthropicPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => {
+        const item = provider("anthropic", {
+          api: { type: "aisdk", package: "@ai-sdk/anthropic" },
+          request: { headers: { Existing: "1" }, body: {} },
+        })
+        catalog.provider.update(item.id, (draft) => {
+          draft.api = item.api
+          draft.request = item.request
+        })
+      })
+      expect((yield* catalog.provider.get(ProviderV2.ID.anthropic)).request.headers["anthropic-beta"]).toBe(
+        "interleaved-thinking-2025-05-14,fine-grained-tool-streaming-2025-05-14",
+      )
+      expect((yield* catalog.provider.get(ProviderV2.ID.anthropic)).request.headers.Existing).toBe("1")
+    }),
+  )
+
+  it.effect("ignores non-Anthropic providers", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const catalog = yield* Catalog.Service
+      yield* plugin.add(AnthropicPlugin)
+      const transform = yield* catalog.transform()
+      yield* transform((catalog) => catalog.provider.update(provider("openai").id, () => {}))
+      expect((yield* catalog.provider.get(ProviderV2.ID.openai)).request.headers["anthropic-beta"]).toBeUndefined()
+    }),
+  )
+
+  it.effect("creates Anthropic SDKs with the model provider ID as the SDK name", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(AnthropicPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("anthropic-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("claude-sonnet-4-5").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("custom-anthropic", "claude-sonnet-4-5"),
+          package: "@ai-sdk/anthropic",
+          options: { name: "custom-anthropic", apiKey: "test" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["custom-anthropic"])
+    }),
+  )
+
+  it.effect("uses the Anthropic provider ID as the SDK name for the bundled Anthropic provider", () =>
+    Effect.gen(function* () {
+      const plugin = yield* PluginV2.Service
+      const providers: string[] = []
+      yield* plugin.add(AnthropicPlugin)
+      yield* plugin.add({
+        id: PluginV2.ID.make("anthropic-sdk-inspector"),
+        effect: Effect.succeed({
+          "aisdk.sdk": (evt) =>
+            Effect.sync(() => {
+              providers.push(evt.sdk.languageModel("claude-sonnet-4-5").provider)
+            }),
+        }),
+      })
+      yield* plugin.trigger(
+        "aisdk.sdk",
+        {
+          model: model("anthropic", "claude-sonnet-4-5"),
+          package: "@ai-sdk/anthropic",
+          options: { name: "anthropic", apiKey: "test" },
+        },
+        {},
+      )
+      expect(providers).toEqual(["anthropic"])
+    }),
+  )
+})