feat(installer): add GitHub Copilot fallback for visual/frontend agents

- frontend-ui-ux-engineer, document-writer, multimodal-looker, explore now use Copilot models when no native providers available - Category overrides (visual-engineering, artistry, writing) also use Copilot models as fallback - Priority: native providers (Gemini/Claude) > Copilot > free models - Login guide moved to bottom with GitHub Copilot auth option added 🤖 Generated with [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode) assistance
2026-01-14 19:11:28 +09:00
parent 93e59da9d6
commit e180d295bb
3 changed files with 182 additions and 37 deletions
@@ -1,6 +1,7 @@
 import { describe, expect, test } from "bun:test"

-import { ANTIGRAVITY_PROVIDER_CONFIG } from "./config-manager"
+import { ANTIGRAVITY_PROVIDER_CONFIG, generateOmoConfig } from "./config-manager"
+import type { InstallConfig } from "./types"

 describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
  test("Gemini models include full spec (limit + modalities)", () => {
@@ -32,3 +33,133 @@ describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
    }
  })
 })
+
+describe("generateOmoConfig - GitHub Copilot fallback", () => {
+  test("frontend-ui-ux-engineer uses Copilot when no native providers", () => {
+    // #given user has only Copilot (no Claude, ChatGPT, Gemini)
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then frontend-ui-ux-engineer should use Copilot Gemini
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["frontend-ui-ux-engineer"]?.model).toBe("github-copilot/gemini-3-pro-preview")
+  })
+
+  test("document-writer uses Copilot when no native providers", () => {
+    // #given user has only Copilot
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then document-writer should use Copilot Gemini Flash
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["document-writer"]?.model).toBe("github-copilot/gemini-3-flash-preview")
+  })
+
+  test("multimodal-looker uses Copilot when no native providers", () => {
+    // #given user has only Copilot
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then multimodal-looker should use Copilot Gemini Flash
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["multimodal-looker"]?.model).toBe("github-copilot/gemini-3-flash-preview")
+  })
+
+  test("explore uses Copilot grok-code when no native providers", () => {
+    // #given user has only Copilot
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then explore should use Copilot Grok
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["explore"]?.model).toBe("github-copilot/grok-code-fast-1")
+  })
+
+  test("native Gemini takes priority over Copilot for frontend-ui-ux-engineer", () => {
+    // #given user has both Gemini and Copilot
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: true,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then native Gemini should be used (NOT Copilot)
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["frontend-ui-ux-engineer"]?.model).toBe("google/antigravity-gemini-3-pro-high")
+  })
+
+  test("native Claude takes priority over Copilot for frontend-ui-ux-engineer", () => {
+    // #given user has Claude and Copilot but no Gemini
+    const config: InstallConfig = {
+      hasClaude: true,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then native Claude should be used (NOT Copilot)
+    const agents = result.agents as Record<string, { model?: string }>
+    expect(agents["frontend-ui-ux-engineer"]?.model).toBe("anthropic/claude-opus-4-5")
+  })
+
+  test("categories use Copilot models when no native Gemini", () => {
+    // #given user has Copilot but no Gemini
+    const config: InstallConfig = {
+      hasClaude: false,
+      isMax20: false,
+      hasChatGPT: false,
+      hasGemini: false,
+      hasCopilot: true,
+    }
+
+    // #when generating config
+    const result = generateOmoConfig(config)
+
+    // #then categories should use Copilot models
+    const categories = result.categories as Record<string, { model?: string }>
+    expect(categories?.["visual-engineering"]?.model).toBe("github-copilot/gemini-3-pro-preview")
+    expect(categories?.["artistry"]?.model).toBe("github-copilot/gemini-3-pro-preview")
+    expect(categories?.["writing"]?.model).toBe("github-copilot/gemini-3-flash-preview")
+  })
+})