fix: address PR review feedback

- Prioritize 'latest', 'beta', 'next' tags in getPluginNameWithVersion()
  to ensure deterministic results when version matches multiple tags
- Add 5s timeout to fetchNpmDistTags() to prevent blocking on slow networks
- Remove unused 'join' import from node:path
- Merge upstream/dev and resolve conflicts in config-manager.test.ts

src/cli/AGENTS.md

@@ -1,24 +1,22 @@
 # CLI KNOWLEDGE BASE
 
 ## OVERVIEW
-
 CLI for oh-my-opencode: interactive installer, health diagnostics (doctor), runtime launcher. Entry: `bunx oh-my-opencode`.
 
 ## STRUCTURE
-
 ```
 cli/
-├── index.ts              # Commander.js entry, subcommand routing
+├── index.ts              # Commander.js entry, subcommand routing (184 lines)
 ├── install.ts            # Interactive TUI installer (436 lines)
 ├── config-manager.ts     # JSONC parsing, env detection (725 lines)
 ├── types.ts              # CLI-specific types
-├── commands/             # CLI subcommands
+├── commands/             # CLI subcommands (auth.ts)
 ├── doctor/               # Health check system
 │   ├── index.ts          # Doctor command entry
 │   ├── runner.ts         # Health check orchestration
 │   ├── constants.ts      # Check categories
 │   ├── types.ts          # Check result interfaces
-│   └── checks/           # 17+ individual checks (auth, config, dependencies, gh, lsp, mcp, opencode, plugin, version)
+│   └── checks/           # 10+ check modules (17+ individual checks)
 ├── get-local-version/    # Version detection
 └── run/                  # OpenCode session launcher
     ├── completion.ts     # Completion logic
@@ -26,47 +24,34 @@ cli/
 ```
 
 ## CLI COMMANDS
-
 | Command | Purpose |
 |---------|---------|
-| `install` | Interactive setup wizard |
-| `doctor` | Environment health checks |
-| `run` | Launch OpenCode session |
+| `install` | Interactive setup wizard with subscription detection |
+| `doctor` | Environment health checks (LSP, Auth, Config, Deps) |
+| `run` | Launch OpenCode session with event handling |
+| `auth` | Manage authentication providers |
 
 ## DOCTOR CHECKS
-
 17+ checks in `doctor/checks/`:
-- version.ts (OpenCode >= 1.0.150)
-- config.ts (plugin registered)
-- bun.ts, node.ts, git.ts
-- anthropic-auth.ts, openai-auth.ts, google-auth.ts
-- lsp-*.ts, mcp-*.ts
+- `version.ts`: OpenCode >= 1.0.150
+- `config.ts`: Plugin registration & JSONC validity
+- `dependencies.ts`: bun, node, git, gh-cli
+- `auth.ts`: Anthropic, OpenAI, Google (Antigravity)
+- `lsp.ts`, `mcp.ts`: Tool connectivity checks
 
-## CONFIG-MANAGER (669 lines)
-
-- JSONC support (comments, trailing commas)
-- Multi-source: User (~/.config/opencode/) + Project (.opencode/)
-- Zod validation
-- Legacy format migration
-- Error aggregation for doctor
+## CONFIG-MANAGER
+- **JSONC**: Supports comments and trailing commas via `parseJsonc`
+- **Multi-source**: Merges User (`~/.config/opencode/`) + Project (`.opencode/`)
+- **Validation**: Strict Zod schema with error aggregation for `doctor`
+- **Env**: Detects `OPENCODE_CONFIG_DIR` for profile isolation
 
 ## HOW TO ADD CHECK
-
-1. Create `src/cli/doctor/checks/my-check.ts`:
-   ```typescript
-   export const myCheck: DoctorCheck = {
-     name: "my-check",
-     category: "environment",
-     check: async () => {
-       return { status: "pass" | "warn" | "fail", message: "..." }
-     }
-   }
-   ```
-2. Add to `src/cli/doctor/checks/index.ts`
+1. Create `src/cli/doctor/checks/my-check.ts` returning `DoctorCheck`
+2. Export from `checks/index.ts` and add to `getAllCheckDefinitions()`
+3. Use `CheckContext` for shared utilities (LSP, Auth)
 
 ## ANTI-PATTERNS
-
 - Blocking prompts in non-TTY (check `process.stdout.isTTY`)
-- Hardcoded paths (use shared utilities)
-- JSON.parse for user files (use parseJsonc)
-- Silent failures in doctor checks
+- Direct `JSON.parse` (breaks JSONC compatibility)
+- Silent failures (always return `warn` or `fail` in `doctor`)
+- Environment-specific hardcoding (use `ConfigManager`)

src/cli/commands/auth.ts

@@ -1,93 +0,0 @@
-import { loadAccounts, saveAccounts } from "../../auth/antigravity/storage"
-import type { AccountStorage } from "../../auth/antigravity/types"
-
-export async function listAccounts(): Promise<number> {
-  const accounts = await loadAccounts()
-
-  if (!accounts || accounts.accounts.length === 0) {
-    console.log("No accounts found.")
-    console.log("Run 'opencode auth login' and select Google (Antigravity) to add accounts.")
-    return 0
-  }
-
-  console.log(`\nGoogle Antigravity Accounts (${accounts.accounts.length}/10):\n`)
-
-  for (let i = 0; i < accounts.accounts.length; i++) {
-    const acc = accounts.accounts[i]
-    const isActive = i === accounts.activeIndex
-    const activeMarker = isActive ? "* " : "  "
-
-    console.log(`${activeMarker}[${i}] ${acc.email || "Unknown"}`)
-    console.log(`      Tier: ${acc.tier || "free"}`)
-
-    const rateLimits = acc.rateLimits || {}
-    const now = Date.now()
-    const limited: string[] = []
-
-    if (rateLimits.claude && rateLimits.claude > now) {
-      const mins = Math.ceil((rateLimits.claude - now) / 60000)
-      limited.push(`claude (${mins}m)`)
-    }
-    if (rateLimits["gemini-flash"] && rateLimits["gemini-flash"] > now) {
-      const mins = Math.ceil((rateLimits["gemini-flash"] - now) / 60000)
-      limited.push(`gemini-flash (${mins}m)`)
-    }
-    if (rateLimits["gemini-pro"] && rateLimits["gemini-pro"] > now) {
-      const mins = Math.ceil((rateLimits["gemini-pro"] - now) / 60000)
-      limited.push(`gemini-pro (${mins}m)`)
-    }
-
-    if (limited.length > 0) {
-      console.log(`      Rate limited: ${limited.join(", ")}`)
-    }
-
-    console.log()
-  }
-
-  return 0
-}
-
-export async function removeAccount(indexOrEmail: string): Promise<number> {
-  const accounts = await loadAccounts()
-
-  if (!accounts || accounts.accounts.length === 0) {
-    console.error("No accounts found.")
-    return 1
-  }
-
-  let index: number
-
-  const parsedIndex = Number(indexOrEmail)
-  if (Number.isInteger(parsedIndex) && String(parsedIndex) === indexOrEmail) {
-    index = parsedIndex
-  } else {
-    index = accounts.accounts.findIndex((acc) => acc.email === indexOrEmail)
-    if (index === -1) {
-      console.error(`Account not found: ${indexOrEmail}`)
-      return 1
-    }
-  }
-
-  if (index < 0 || index >= accounts.accounts.length) {
-    console.error(`Invalid index: ${index}. Valid range: 0-${accounts.accounts.length - 1}`)
-    return 1
-  }
-
-  const removed = accounts.accounts[index]
-  accounts.accounts.splice(index, 1)
-
-  if (accounts.accounts.length === 0) {
-    accounts.activeIndex = -1
-  } else if (accounts.activeIndex >= accounts.accounts.length) {
-    accounts.activeIndex = accounts.accounts.length - 1
-  } else if (accounts.activeIndex > index) {
-    accounts.activeIndex--
-  }
-
-  await saveAccounts(accounts)
-
-  console.log(`Removed account: ${removed.email || "Unknown"} (index ${index})`)
-  console.log(`Remaining accounts: ${accounts.accounts.length}`)
-
-  return 0
-}

src/cli/config-manager.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, test, mock, beforeEach, afterEach } from "bun:test"
 
-import { ANTIGRAVITY_PROVIDER_CONFIG, getPluginNameWithVersion, fetchNpmDistTags } from "./config-manager"
+import { ANTIGRAVITY_PROVIDER_CONFIG, getPluginNameWithVersion, fetchNpmDistTags, generateOmoConfig } from "./config-manager"
+import type { InstallConfig } from "./types"
 
 describe("getPluginNameWithVersion", () => {
   const originalFetch = globalThis.fetch
@@ -99,6 +100,22 @@ describe("getPluginNameWithVersion", () => {
     // #then should fall back to pinned version
     expect(result).toBe("oh-my-opencode@2.14.0")
   })
+
+  test("prioritizes latest over other tags when version matches multiple", async () => {
+    // #given version matches both latest and beta (during release promotion)
+    globalThis.fetch = mock(() =>
+      Promise.resolve({
+        ok: true,
+        json: () => Promise.resolve({ beta: "3.0.0", latest: "3.0.0", next: "3.1.0-alpha.1" }),
+      } as Response)
+    ) as unknown as typeof fetch
+
+    // #when current version matches both
+    const result = await getPluginNameWithVersion("3.0.0")
+
+    // #then should prioritize @latest
+    expect(result).toBe("oh-my-opencode@latest")
+  })
 })
 
 describe("fetchNpmDistTags", () => {
@@ -182,3 +199,133 @@ 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")
+  })
+})

src/cli/config-manager.ts

@@ -1,5 +1,4 @@
 import { existsSync, mkdirSync, readFileSync, writeFileSync, statSync } from "node:fs"
-import { join } from "node:path"
 import {
   parseJsonc,
   getOpenCodeConfigPaths,
@@ -116,9 +115,13 @@ interface NpmDistTags {
   [tag: string]: string | undefined
 }
 
+const NPM_FETCH_TIMEOUT_MS = 5000
+
 export async function fetchNpmDistTags(packageName: string): Promise<NpmDistTags | null> {
   try {
-    const res = await fetch(`https://registry.npmjs.org/-/package/${packageName}/dist-tags`)
+    const res = await fetch(`https://registry.npmjs.org/-/package/${packageName}/dist-tags`, {
+      signal: AbortSignal.timeout(NPM_FETCH_TIMEOUT_MS),
+    })
     if (!res.ok) return null
     const data = await res.json() as NpmDistTags
     return data
@@ -129,12 +132,15 @@ export async function fetchNpmDistTags(packageName: string): Promise<NpmDistTags
 
 const PACKAGE_NAME = "oh-my-opencode"
 
+const PRIORITIZED_TAGS = ["latest", "beta", "next"] as const
+
 export async function getPluginNameWithVersion(currentVersion: string): Promise<string> {
   const distTags = await fetchNpmDistTags(PACKAGE_NAME)
 
   if (distTags) {
-    for (const [tag, tagVersion] of Object.entries(distTags)) {
-      if (tagVersion === currentVersion) {
+    const allTags = new Set([...PRIORITIZED_TAGS, ...Object.keys(distTags)])
+    for (const tag of allTags) {
+      if (distTags[tag] === currentVersion) {
         return `${PACKAGE_NAME}@${tag}`
       }
     }
@@ -305,14 +311,12 @@ export function generateOmoConfig(installConfig: InstallConfig): Record<string,
     $schema: "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   }
 
-  if (installConfig.hasGemini) {
-    config.google_auth = false
-  }
-
   const agents: Record<string, Record<string, unknown>> = {}
 
   if (!installConfig.hasClaude) {
-    agents["Sisyphus"] = { model: "opencode/glm-4.7-free" }
+    agents["Sisyphus"] = {
+      model: installConfig.hasCopilot ? "github-copilot/claude-opus-4.5" : "opencode/glm-4.7-free",
+    }
   }
 
   agents["librarian"] = { model: "opencode/glm-4.7-free" }
@@ -323,38 +327,56 @@ export function generateOmoConfig(installConfig: InstallConfig): Record<string,
     agents["explore"] = { model: "google/antigravity-gemini-3-flash" }
   } else if (installConfig.hasClaude && installConfig.isMax20) {
     agents["explore"] = { model: "anthropic/claude-haiku-4-5" }
+  } else if (installConfig.hasCopilot) {
+    agents["explore"] = { model: "github-copilot/grok-code-fast-1" }
   } else {
     agents["explore"] = { model: "opencode/glm-4.7-free" }
   }
 
   if (!installConfig.hasChatGPT) {
-    agents["oracle"] = {
-      model: installConfig.hasClaude ? "anthropic/claude-opus-4-5" : "opencode/glm-4.7-free",
-    }
+    const oracleFallback = installConfig.hasCopilot
+      ? "github-copilot/gpt-5.2"
+      : installConfig.hasClaude
+        ? "anthropic/claude-opus-4-5"
+        : "opencode/glm-4.7-free"
+    agents["oracle"] = { model: oracleFallback }
   }
 
   if (installConfig.hasGemini) {
     agents["frontend-ui-ux-engineer"] = { model: "google/antigravity-gemini-3-pro-high" }
     agents["document-writer"] = { model: "google/antigravity-gemini-3-flash" }
     agents["multimodal-looker"] = { model: "google/antigravity-gemini-3-flash" }
+  } else if (installConfig.hasClaude) {
+    agents["frontend-ui-ux-engineer"] = { model: "anthropic/claude-opus-4-5" }
+    agents["document-writer"] = { model: "anthropic/claude-opus-4-5" }
+    agents["multimodal-looker"] = { model: "anthropic/claude-opus-4-5" }
+  } else if (installConfig.hasCopilot) {
+    agents["frontend-ui-ux-engineer"] = { model: "github-copilot/gemini-3-pro-preview" }
+    agents["document-writer"] = { model: "github-copilot/gemini-3-flash-preview" }
+    agents["multimodal-looker"] = { model: "github-copilot/gemini-3-flash-preview" }
   } else {
-    const fallbackModel = installConfig.hasClaude ? "anthropic/claude-opus-4-5" : "opencode/glm-4.7-free"
-    agents["frontend-ui-ux-engineer"] = { model: fallbackModel }
-    agents["document-writer"] = { model: fallbackModel }
-    agents["multimodal-looker"] = { model: fallbackModel }
+    agents["frontend-ui-ux-engineer"] = { model: "opencode/glm-4.7-free" }
+    agents["document-writer"] = { model: "opencode/glm-4.7-free" }
+    agents["multimodal-looker"] = { model: "opencode/glm-4.7-free" }
   }
 
   if (Object.keys(agents).length > 0) {
     config.agents = agents
   }
 
-  // Categories: override model for Antigravity auth (gemini-3-pro-preview → gemini-3-pro-high)
+  // Categories: override model for Antigravity auth or GitHub Copilot fallback
   if (installConfig.hasGemini) {
     config.categories = {
       "visual-engineering": { model: "google/gemini-3-pro-high" },
       artistry: { model: "google/gemini-3-pro-high" },
       writing: { model: "google/gemini-3-flash-high" },
     }
+  } else if (installConfig.hasCopilot) {
+    config.categories = {
+      "visual-engineering": { model: "github-copilot/gemini-3-pro-preview" },
+      artistry: { model: "github-copilot/gemini-3-pro-preview" },
+      writing: { model: "github-copilot/gemini-3-flash-preview" },
+    }
   }
 
   return config
@@ -388,7 +410,6 @@ export function writeOmoConfig(installConfig: InstallConfig): ConfigMergeResult
           return { success: true, configPath: omoConfigPath }
         }
 
-        delete existing.agents
         const merged = deepMerge(existing, newConfig)
         writeFileSync(omoConfigPath, JSON.stringify(merged, null, 2) + "\n")
       } catch (parseErr) {
@@ -474,11 +495,7 @@ export async function addAuthPlugins(config: InstallConfig): Promise<ConfigMerge
       }
     }
 
-    if (config.hasChatGPT) {
-      if (!plugins.some((p) => p.startsWith("opencode-openai-codex-auth"))) {
-        plugins.push("opencode-openai-codex-auth")
-      }
-    }
+
 
     const newConfig = { ...(existingConfig ?? {}), plugin: plugins }
     writeFileSync(path, JSON.stringify(newConfig, null, 2) + "\n")
@@ -588,54 +605,7 @@ export const ANTIGRAVITY_PROVIDER_CONFIG = {
   },
 }
 
-const CODEX_PROVIDER_CONFIG = {
-  openai: {
-    name: "OpenAI",
-    options: {
-      reasoningEffort: "medium",
-      reasoningSummary: "auto",
-      textVerbosity: "medium",
-      include: ["reasoning.encrypted_content"],
-      store: false,
-    },
-    models: {
-      "gpt-5.2": {
-        name: "GPT 5.2 (OAuth)",
-        limit: { context: 272000, output: 128000 },
-        modalities: { input: ["text", "image"], output: ["text"] },
-        variants: {
-          none: { reasoningEffort: "none", reasoningSummary: "auto", textVerbosity: "medium" },
-          low: { reasoningEffort: "low", reasoningSummary: "auto", textVerbosity: "medium" },
-          medium: { reasoningEffort: "medium", reasoningSummary: "auto", textVerbosity: "medium" },
-          high: { reasoningEffort: "high", reasoningSummary: "detailed", textVerbosity: "medium" },
-          xhigh: { reasoningEffort: "xhigh", reasoningSummary: "detailed", textVerbosity: "medium" },
-        },
-      },
-      "gpt-5.2-codex": {
-        name: "GPT 5.2 Codex (OAuth)",
-        limit: { context: 272000, output: 128000 },
-        modalities: { input: ["text", "image"], output: ["text"] },
-        variants: {
-          low: { reasoningEffort: "low", reasoningSummary: "auto", textVerbosity: "medium" },
-          medium: { reasoningEffort: "medium", reasoningSummary: "auto", textVerbosity: "medium" },
-          high: { reasoningEffort: "high", reasoningSummary: "detailed", textVerbosity: "medium" },
-          xhigh: { reasoningEffort: "xhigh", reasoningSummary: "detailed", textVerbosity: "medium" },
-        },
-      },
-      "gpt-5.1-codex-max": {
-        name: "GPT 5.1 Codex Max (OAuth)",
-        limit: { context: 272000, output: 128000 },
-        modalities: { input: ["text", "image"], output: ["text"] },
-        variants: {
-          low: { reasoningEffort: "low", reasoningSummary: "detailed", textVerbosity: "medium" },
-          medium: { reasoningEffort: "medium", reasoningSummary: "detailed", textVerbosity: "medium" },
-          high: { reasoningEffort: "high", reasoningSummary: "detailed", textVerbosity: "medium" },
-          xhigh: { reasoningEffort: "xhigh", reasoningSummary: "detailed", textVerbosity: "medium" },
-        },
-      },
-    },
-  },
-}
+
 
 export function addProviderConfig(config: InstallConfig): ConfigMergeResult {
   try {
@@ -665,10 +635,6 @@ export function addProviderConfig(config: InstallConfig): ConfigMergeResult {
       providers.google = ANTIGRAVITY_PROVIDER_CONFIG.google
     }
 
-    if (config.hasChatGPT) {
-      providers.openai = CODEX_PROVIDER_CONFIG.openai
-    }
-
     if (Object.keys(providers).length > 0) {
       newConfig.provider = providers
     }
@@ -681,7 +647,6 @@ export function addProviderConfig(config: InstallConfig): ConfigMergeResult {
 }
 
 interface OmoConfigData {
-  google_auth?: boolean
   agents?: Record<string, { model?: string }>
 }
 
@@ -692,6 +657,7 @@ export function detectCurrentConfig(): DetectedConfig {
     isMax20: true,
     hasChatGPT: true,
     hasGemini: false,
+    hasCopilot: false,
   }
 
   const { format, path } = detectConfigFormat()
@@ -713,7 +679,6 @@ export function detectCurrentConfig(): DetectedConfig {
   }
 
   result.hasGemini = plugins.some((p) => p.startsWith("opencode-antigravity-auth"))
-  result.hasChatGPT = plugins.some((p) => p.startsWith("opencode-openai-codex-auth"))
 
   const omoConfigPath = getOmoConfig()
   if (!existsSync(omoConfigPath)) {
@@ -752,9 +717,11 @@ export function detectCurrentConfig(): DetectedConfig {
       result.hasChatGPT = false
     }
 
-    if (omoConfig.google_auth === false) {
-      result.hasGemini = plugins.some((p) => p.startsWith("opencode-antigravity-auth"))
-    }
+    const hasAnyCopilotModel = Object.values(agents).some(
+      (agent) => agent?.model?.startsWith("github-copilot/")
+    )
+    result.hasCopilot = hasAnyCopilotModel
+
   } catch {
     /* intentionally empty - malformed omo config returns defaults from opencode config detection */
   }

src/cli/doctor/checks/version.ts

@@ -50,7 +50,9 @@ export async function getVersionInfo(): Promise<VersionCheckInfo> {
   }
 
   const currentVersion = getCachedVersion()
-  const latestVersion = await getLatestVersion()
+  const { extractChannel } = await import("../../../hooks/auto-update-checker/index")
+  const channel = extractChannel(pluginInfo?.pinnedVersion ?? currentVersion)
+  const latestVersion = await getLatestVersion(channel)
 
   const isUpToDate =
     !currentVersion ||

src/cli/get-local-version/index.ts

@@ -54,7 +54,9 @@ export async function getLocalVersion(options: GetLocalVersionOptions = {}): Pro
       return 1
     }
 
-    const latestVersion = await getLatestVersion()
+    const { extractChannel } = await import("../../hooks/auto-update-checker/index")
+    const channel = extractChannel(pluginInfo?.pinnedVersion ?? currentVersion)
+    const latestVersion = await getLatestVersion(channel)
     
     if (!latestVersion) {
       const info: VersionInfo = {

src/cli/index.ts

@@ -4,7 +4,6 @@ import { install } from "./install"
 import { run } from "./run"
 import { getLocalVersion } from "./get-local-version"
 import { doctor } from "./doctor"
-import { listAccounts, removeAccount } from "./commands/auth"
 import type { InstallArgs } from "./types"
 import type { RunOptions } from "./run"
 import type { GetLocalVersionOptions } from "./get-local-version/types"
@@ -135,45 +134,6 @@ Categories:
     process.exit(exitCode)
   })
 
-const authCommand = program
-  .command("auth")
-  .description("Manage Google Antigravity accounts")
-
-authCommand
-  .command("list")
-  .description("List all Google Antigravity accounts")
-  .addHelpText("after", `
-Examples:
-  $ bunx oh-my-opencode auth list
-
-Shows:
-  - Account index and email
-  - Account tier (free/paid)
-  - Active account (marked with *)
-  - Rate limit status per model family
-`)
-  .action(async () => {
-    const exitCode = await listAccounts()
-    process.exit(exitCode)
-  })
-
-authCommand
-  .command("remove <index-or-email>")
-  .description("Remove an account by index or email")
-  .addHelpText("after", `
-Examples:
-  $ bunx oh-my-opencode auth remove 0
-  $ bunx oh-my-opencode auth remove user@example.com
-
-Note:
-  - Use 'auth list' to see account indices
-  - Removing the active account will switch to the next available account
-`)
-  .action(async (indexOrEmail: string) => {
-    const exitCode = await removeAccount(indexOrEmail)
-    process.exit(exitCode)
-  })
-
 program
   .command("version")
   .description("Show version information")

src/cli/install.ts

@@ -41,6 +41,7 @@ function formatConfigSummary(config: InstallConfig): string {
   lines.push(formatProvider("Claude", config.hasClaude, claudeDetail))
   lines.push(formatProvider("ChatGPT", config.hasChatGPT))
   lines.push(formatProvider("Gemini", config.hasGemini))
+  lines.push(formatProvider("GitHub Copilot", config.hasCopilot, "fallback provider"))
 
   lines.push("")
   lines.push(color.dim("─".repeat(40)))
@@ -49,8 +50,8 @@ function formatConfigSummary(config: InstallConfig): string {
   lines.push(color.bold(color.white("Agent Configuration")))
   lines.push("")
 
-  const sisyphusModel = config.hasClaude ? "claude-opus-4-5" : "glm-4.7-free"
-  const oracleModel = config.hasChatGPT ? "gpt-5.2" : (config.hasClaude ? "claude-opus-4-5" : "glm-4.7-free")
+  const sisyphusModel = config.hasClaude ? "claude-opus-4-5" : (config.hasCopilot ? "github-copilot/claude-opus-4.5" : "glm-4.7-free")
+  const oracleModel = config.hasChatGPT ? "gpt-5.2" : (config.hasCopilot ? "github-copilot/gpt-5.2" : (config.hasClaude ? "claude-opus-4-5" : "glm-4.7-free"))
   const librarianModel = "glm-4.7-free"
   const frontendModel = config.hasGemini ? "antigravity-gemini-3-pro-high" : (config.hasClaude ? "claude-opus-4-5" : "glm-4.7-free")
 
@@ -133,6 +134,12 @@ function validateNonTuiArgs(args: InstallArgs): { valid: boolean; errors: string
     errors.push(`Invalid --gemini value: ${args.gemini} (expected: no, yes)`)
   }
 
+  if (args.copilot === undefined) {
+    errors.push("--copilot is required (values: no, yes)")
+  } else if (!["no", "yes"].includes(args.copilot)) {
+    errors.push(`Invalid --copilot value: ${args.copilot} (expected: no, yes)`)
+  }
+
   return { valid: errors.length === 0, errors }
 }
 
@@ -142,10 +149,11 @@ function argsToConfig(args: InstallArgs): InstallConfig {
     isMax20: args.claude === "max20",
     hasChatGPT: args.chatgpt === "yes",
     hasGemini: args.gemini === "yes",
+    hasCopilot: args.copilot === "yes",
   }
 }
 
-function detectedToInitialValues(detected: DetectedConfig): { claude: ClaudeSubscription; chatgpt: BooleanArg; gemini: BooleanArg } {
+function detectedToInitialValues(detected: DetectedConfig): { claude: ClaudeSubscription; chatgpt: BooleanArg; gemini: BooleanArg; copilot: BooleanArg } {
   let claude: ClaudeSubscription = "no"
   if (detected.hasClaude) {
     claude = detected.isMax20 ? "max20" : "yes"
@@ -155,6 +163,7 @@ function detectedToInitialValues(detected: DetectedConfig): { claude: ClaudeSubs
     claude,
     chatgpt: detected.hasChatGPT ? "yes" : "no",
     gemini: detected.hasGemini ? "yes" : "no",
+    copilot: detected.hasCopilot ? "yes" : "no",
   }
 }
 
@@ -204,11 +213,26 @@ async function runTuiMode(detected: DetectedConfig): Promise<InstallConfig | nul
     return null
   }
 
+  const copilot = await p.select({
+    message: "Do you have a GitHub Copilot subscription?",
+    options: [
+      { value: "no" as const, label: "No", hint: "Only native providers will be used" },
+      { value: "yes" as const, label: "Yes", hint: "Fallback option when native providers unavailable" },
+    ],
+    initialValue: initial.copilot,
+  })
+
+  if (p.isCancel(copilot)) {
+    p.cancel("Installation cancelled.")
+    return null
+  }
+
   return {
     hasClaude: claude !== "no",
     isMax20: claude === "max20",
     hasChatGPT: chatgpt === "yes",
     hasGemini: gemini === "yes",
+    hasCopilot: copilot === "yes",
   }
 }
 
@@ -221,7 +245,7 @@ async function runNonTuiInstall(args: InstallArgs): Promise<number> {
       console.log(`  ${SYMBOLS.bullet} ${err}`)
     }
     console.log()
-    printInfo("Usage: bunx oh-my-opencode install --no-tui --claude=<no|yes|max20> --chatgpt=<no|yes> --gemini=<no|yes>")
+    printInfo("Usage: bunx oh-my-opencode install --no-tui --claude=<no|yes|max20> --chatgpt=<no|yes> --gemini=<no|yes> --copilot=<no|yes>")
     console.log()
     return 1
   }
@@ -260,7 +284,7 @@ async function runNonTuiInstall(args: InstallArgs): Promise<number> {
   }
   printSuccess(`Plugin ${isUpdate ? "verified" : "added"} ${SYMBOLS.arrow} ${color.dim(pluginResult.configPath)}`)
 
-  if (config.hasGemini || config.hasChatGPT) {
+  if (config.hasGemini) {
     printStep(step++, totalSteps, "Adding auth plugins...")
     const authResult = await addAuthPlugins(config)
     if (!authResult.success) {
@@ -290,25 +314,10 @@ async function runNonTuiInstall(args: InstallArgs): Promise<number> {
 
   printBox(formatConfigSummary(config), isUpdate ? "Updated Configuration" : "Installation Complete")
 
-  if (!config.hasClaude && !config.hasChatGPT && !config.hasGemini) {
+  if (!config.hasClaude && !config.hasChatGPT && !config.hasGemini && !config.hasCopilot) {
     printWarning("No model providers configured. Using opencode/glm-4.7-free as fallback.")
   }
 
-  if ((config.hasClaude || config.hasChatGPT || config.hasGemini) && !args.skipAuth) {
-    console.log(color.bold("Next Steps - Authenticate your providers:"))
-    console.log()
-    if (config.hasClaude) {
-      console.log(`  ${SYMBOLS.arrow} ${color.dim("opencode auth login")} ${color.gray("(select Anthropic → Claude Pro/Max)")}`)
-    }
-    if (config.hasChatGPT) {
-      console.log(`  ${SYMBOLS.arrow} ${color.dim("opencode auth login")} ${color.gray("(select OpenAI → ChatGPT Plus/Pro)")}`)
-    }
-    if (config.hasGemini) {
-      console.log(`  ${SYMBOLS.arrow} ${color.dim("opencode auth login")} ${color.gray("(select Google → OAuth with Antigravity)")}`)
-    }
-    console.log()
-  }
-
   console.log(`${SYMBOLS.star} ${color.bold(color.green(isUpdate ? "Configuration updated!" : "Installation complete!"))}`)
   console.log(`  Run ${color.cyan("opencode")} to start!`)
   console.log()
@@ -326,6 +335,17 @@ async function runNonTuiInstall(args: InstallArgs): Promise<number> {
   console.log(color.dim("oMoMoMoMo... Enjoy!"))
   console.log()
 
+  if ((config.hasClaude || config.hasChatGPT || config.hasGemini || config.hasCopilot) && !args.skipAuth) {
+    printBox(
+      `Run ${color.cyan("opencode auth login")} and select your provider:\n` +
+      (config.hasClaude ? `  ${SYMBOLS.bullet} Anthropic ${color.gray("→ Claude Pro/Max")}\n` : "") +
+      (config.hasChatGPT ? `  ${SYMBOLS.bullet} OpenAI ${color.gray("→ ChatGPT Plus/Pro")}\n` : "") +
+      (config.hasGemini ? `  ${SYMBOLS.bullet} Google ${color.gray("→ OAuth with Antigravity")}\n` : "") +
+      (config.hasCopilot ? `  ${SYMBOLS.bullet} GitHub ${color.gray("→ Copilot")}` : ""),
+      "🔐 Authenticate Your Providers"
+    )
+  }
+
   return 0
 }
 
@@ -371,7 +391,7 @@ export async function install(args: InstallArgs): Promise<number> {
   }
   s.stop(`Plugin added to ${color.cyan(pluginResult.configPath)}`)
 
-  if (config.hasGemini || config.hasChatGPT) {
+  if (config.hasGemini) {
     s.start("Adding auth plugins (fetching latest versions)")
     const authResult = await addAuthPlugins(config)
     if (!authResult.success) {
@@ -400,26 +420,12 @@ export async function install(args: InstallArgs): Promise<number> {
   }
   s.stop(`Config written to ${color.cyan(omoResult.configPath)}`)
 
-  if (!config.hasClaude && !config.hasChatGPT && !config.hasGemini) {
+  if (!config.hasClaude && !config.hasChatGPT && !config.hasGemini && !config.hasCopilot) {
     p.log.warn("No model providers configured. Using opencode/glm-4.7-free as fallback.")
   }
 
   p.note(formatConfigSummary(config), isUpdate ? "Updated Configuration" : "Installation Complete")
 
-  if ((config.hasClaude || config.hasChatGPT || config.hasGemini) && !args.skipAuth) {
-    const steps: string[] = []
-    if (config.hasClaude) {
-      steps.push(`${color.dim("opencode auth login")} ${color.gray("(select Anthropic → Claude Pro/Max)")}`)
-    }
-    if (config.hasChatGPT) {
-      steps.push(`${color.dim("opencode auth login")} ${color.gray("(select OpenAI → ChatGPT Plus/Pro)")}`)
-    }
-    if (config.hasGemini) {
-      steps.push(`${color.dim("opencode auth login")} ${color.gray("(select Google → OAuth with Antigravity)")}`)
-    }
-    p.note(steps.join("\n"), "Next Steps - Authenticate your providers")
-  }
-
   p.log.success(color.bold(isUpdate ? "Configuration updated!" : "Installation complete!"))
   p.log.message(`Run ${color.cyan("opencode")} to start!`)
 
@@ -435,5 +441,22 @@ export async function install(args: InstallArgs): Promise<number> {
 
   p.outro(color.green("oMoMoMoMo... Enjoy!"))
 
+  if ((config.hasClaude || config.hasChatGPT || config.hasGemini || config.hasCopilot) && !args.skipAuth) {
+    const providers: string[] = []
+    if (config.hasClaude) providers.push(`Anthropic ${color.gray("→ Claude Pro/Max")}`)
+    if (config.hasChatGPT) providers.push(`OpenAI ${color.gray("→ ChatGPT Plus/Pro")}`)
+    if (config.hasGemini) providers.push(`Google ${color.gray("→ OAuth with Antigravity")}`)
+    if (config.hasCopilot) providers.push(`GitHub ${color.gray("→ Copilot")}`)
+
+    console.log()
+    console.log(color.bold("🔐 Authenticate Your Providers"))
+    console.log()
+    console.log(`   Run ${color.cyan("opencode auth login")} and select:`)
+    for (const provider of providers) {
+      console.log(`   ${SYMBOLS.bullet} ${provider}`)
+    }
+    console.log()
+  }
+
   return 0
 }

src/cli/run/events.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect } from "bun:test"
-import { createEventState, type EventState } from "./events"
+import { createEventState, serializeError, type EventState } from "./events"
 import type { RunContext, EventPayload } from "./types"
 
 const createMockContext = (sessionID: string = "test-session"): RunContext => ({
@@ -15,6 +15,63 @@ async function* toAsyncIterable<T>(items: T[]): AsyncIterable<T> {
   }
 }
 
+describe("serializeError", () => {
+  it("returns 'Unknown error' for null/undefined", () => {
+    // #given / #when / #then
+    expect(serializeError(null)).toBe("Unknown error")
+    expect(serializeError(undefined)).toBe("Unknown error")
+  })
+
+  it("returns message from Error instance", () => {
+    // #given
+    const error = new Error("Something went wrong")
+
+    // #when / #then
+    expect(serializeError(error)).toBe("Something went wrong")
+  })
+
+  it("returns string as-is", () => {
+    // #given / #when / #then
+    expect(serializeError("Direct error message")).toBe("Direct error message")
+  })
+
+  it("extracts message from plain object", () => {
+    // #given
+    const errorObj = { message: "Object error message", code: "ERR_001" }
+
+    // #when / #then
+    expect(serializeError(errorObj)).toBe("Object error message")
+  })
+
+  it("extracts message from nested error object", () => {
+    // #given
+    const errorObj = { error: { message: "Nested error message" } }
+
+    // #when / #then
+    expect(serializeError(errorObj)).toBe("Nested error message")
+  })
+
+  it("extracts message from data.message path", () => {
+    // #given
+    const errorObj = { data: { message: "Data error message" } }
+
+    // #when / #then
+    expect(serializeError(errorObj)).toBe("Data error message")
+  })
+
+  it("JSON stringifies object without message property", () => {
+    // #given
+    const errorObj = { code: "ERR_001", status: 500 }
+
+    // #when
+    const result = serializeError(errorObj)
+
+    // #then
+    expect(result).toContain("ERR_001")
+    expect(result).toContain("500")
+  })
+})
+
 describe("createEventState", () => {
   it("creates initial state with correct defaults", () => {
     // #given / #when

src/cli/run/events.ts

@@ -11,6 +11,51 @@ import type {
   ToolResultProps,
 } from "./types"
 
+export function serializeError(error: unknown): string {
+  if (!error) return "Unknown error"
+
+  if (error instanceof Error) {
+    const parts = [error.message]
+    if (error.cause) {
+      parts.push(`Cause: ${serializeError(error.cause)}`)
+    }
+    return parts.join(" | ")
+  }
+
+  if (typeof error === "string") {
+    return error
+  }
+
+  if (typeof error === "object") {
+    const obj = error as Record<string, unknown>
+
+    const messagePaths = [
+      obj.message,
+      obj.error,
+      (obj.data as Record<string, unknown>)?.message,
+      (obj.data as Record<string, unknown>)?.error,
+      (obj.error as Record<string, unknown>)?.message,
+    ]
+
+    for (const msg of messagePaths) {
+      if (typeof msg === "string" && msg.length > 0) {
+        return msg
+      }
+    }
+
+    try {
+      const json = JSON.stringify(error, null, 2)
+      if (json !== "{}") {
+        return json
+      }
+    } catch (_) {
+      void _
+    }
+  }
+
+  return String(error)
+}
+
 export interface EventState {
   mainSessionIdle: boolean
   mainSessionError: boolean
@@ -125,6 +170,13 @@ function logEventVerbose(ctx: RunContext, payload: EventPayload): void {
       break
     }
 
+    case "session.error": {
+      const errorProps = props as SessionErrorProps | undefined
+      const errorMsg = serializeError(errorProps?.error)
+      console.error(pc.red(`${sessionTag} ❌ SESSION.ERROR: ${errorMsg}`))
+      break
+    }
+
     default:
       console.error(pc.dim(`${sessionTag} ${payload.type}`))
   }
@@ -166,9 +218,7 @@ function handleSessionError(
   const props = payload.properties as SessionErrorProps | undefined
   if (props?.sessionID === ctx.sessionID) {
     state.mainSessionError = true
-    state.lastError = props?.error
-      ? String(props.error instanceof Error ? props.error.message : props.error)
-      : "Unknown error"
+    state.lastError = serializeError(props?.error)
     console.error(pc.red(`\n[session.error] ${state.lastError}`))
   }
 }

src/cli/run/runner.ts

@@ -2,7 +2,7 @@ import { createOpencode } from "@opencode-ai/sdk"
 import pc from "picocolors"
 import type { RunOptions, RunContext } from "./types"
 import { checkCompletionConditions } from "./completion"
-import { createEventState, processEvents } from "./events"
+import { createEventState, processEvents, serializeError } from "./events"
 
 const POLL_INTERVAL_MS = 500
 const DEFAULT_TIMEOUT_MS = 0
@@ -115,7 +115,7 @@ export async function run(options: RunOptions): Promise<number> {
     if (err instanceof Error && err.name === "AbortError") {
       return 130
     }
-    console.error(pc.red(`Error: ${err}`))
+    console.error(pc.red(`Error: ${serializeError(err)}`))
     return 1
   }
 }

src/cli/types.ts

@@ -6,6 +6,7 @@ export interface InstallArgs {
   claude?: ClaudeSubscription
   chatgpt?: BooleanArg
   gemini?: BooleanArg
+  copilot?: BooleanArg
   skipAuth?: boolean
 }
 
@@ -14,6 +15,7 @@ export interface InstallConfig {
   isMax20: boolean
   hasChatGPT: boolean
   hasGemini: boolean
+  hasCopilot: boolean
 }
 
 export interface ConfigMergeResult {
@@ -28,4 +30,5 @@ export interface DetectedConfig {
   isMax20: boolean
   hasChatGPT: boolean
   hasGemini: boolean
+  hasCopilot: boolean
 }