fix: subagent can't created in opencode free model /login no apikey

.gitignore

@@ -1,4 +1,5 @@
 node_modules/
 dist/
 cli
+.codex
 VersperClaw

src/utils/auth.ts

@@ -307,7 +307,7 @@ export function getOpenRouterApiKeyWithSource(): {
     : { key: null, source: 'none' }
 }
 
-export function getConfiguredAuthProvider(): 'anthropic' | 'openrouter' | 'openai' | 'local' | null {
+export function getConfiguredAuthProvider(): 'anthropic' | 'openrouter' | 'openai' | 'local' | 'opencode' | null {
   // First try to get from cache for performance
   const storedProvider = getGlobalConfig().authProvider
   if (storedProvider) {
@@ -319,13 +319,13 @@ export function getConfiguredAuthProvider(): 'anthropic' | 'openrouter' | 'opena
 }
 
 // Read authProvider directly from file to bypass cache
-export function getConfiguredAuthProviderFromFile(): 'anthropic' | 'openrouter' | 'openai' | 'local' | null {
+export function getConfiguredAuthProviderFromFile(): 'anthropic' | 'openrouter' | 'openai' | 'local' | 'opencode' | null {
   try {
     // eslint-disable-next-line @typescript-eslint/no-require-imports
     const { readFileSync } = require('fs') as typeof import('fs')
     const raw = readFileSync(getGlobalClaudeFile(), 'utf8')
     const config = JSON.parse(raw) as {
-      authProvider?: 'anthropic' | 'openrouter' | 'openai' | 'local'
+      authProvider?: 'anthropic' | 'openrouter' | 'openai' | 'local' | 'opencode'
     }
 
     if (config.authProvider) {

src/utils/model/agent.ts

@@ -8,6 +8,7 @@ import {
   parseUserSpecifiedModel,
 } from './model.js'
 import { getAPIProvider } from './providers.js'
+import { getOpenCodeApiKey } from '../auth.js'
 
 export const AGENT_MODEL_OPTIONS = [...MODEL_ALIASES, 'inherit'] as const
 export type AgentModelAlias = (typeof AGENT_MODEL_OPTIONS)[number]
@@ -48,6 +49,14 @@ export function getAgentModel(
   // This ensures subagents use the same cross-region inference profile (e.g., "eu.", "us.")
   // as the parent, which is required when IAM permissions only allow specific regions.
   const parentRegionPrefix = getBedrockRegionPrefix(parentModel)
+  const provider = getAPIProvider()
+
+  // OpenCode free-mode sessions are known to be more reliable when subagents
+  // stay on the parent's already-working model instead of switching to alias-
+  // derived variants like haiku -> gpt-5-nano. If the user has configured an
+  // OpenCode API key, keep honoring explicit alias-based model selection.
+  const shouldInheritParentForKeylessOpenCode =
+    provider === 'opencode' && !getOpenCodeApiKey()
 
   // Helper to apply parent region prefix for Bedrock models.
   // `originalSpec` is the raw model string before resolution (alias or full ID).
@@ -59,15 +68,31 @@ export function getAgentModel(
     resolvedModel: string,
     originalSpec: string,
   ): string => {
-    if (parentRegionPrefix && getAPIProvider() === 'bedrock') {
+    if (parentRegionPrefix && provider === 'bedrock') {
       if (getBedrockRegionPrefix(originalSpec)) return resolvedModel
       return applyBedrockRegionPrefix(resolvedModel, parentRegionPrefix)
     }
     return resolvedModel
   }
 
+  const shouldStickToParentModel = (spec: string): boolean => {
+    if (!shouldInheritParentForKeylessOpenCode) {
+      return false
+    }
+    const normalized = spec.toLowerCase()
+    return (
+      normalized === 'haiku' ||
+      normalized === 'sonnet' ||
+      normalized === 'opus' ||
+      normalized === 'best'
+    )
+  }
+
   // Prioritize tool-specified model if provided
   if (toolSpecifiedModel) {
+    if (shouldStickToParentModel(toolSpecifiedModel)) {
+      return parentModel
+    }
     if (aliasMatchesParentTier(toolSpecifiedModel, parentModel)) {
       return parentModel
     }
@@ -87,6 +112,10 @@ export function getAgentModel(
     })
   }
 
+  if (shouldStickToParentModel(agentModelWithExp)) {
+    return parentModel
+  }
+
   if (aliasMatchesParentTier(agentModelWithExp, parentModel)) {
     return parentModel
   }

src/utils/swarm/spawnUtils.ts

@@ -94,6 +94,10 @@ export function buildInheritedCliFlags(options?: {
  * parent's env, so we forward any that are set in the current process.
  */
 const TEAMMATE_ENV_VARS = [
+  // Explicit provider override — without these, spawned teammates can fall
+  // back to firstParty even when the leader is pinned to OpenCode/OpenAI/etc.
+  'BETTER_CLAWD_API_PROVIDER',
+  'CLAUDE_CODE_API_PROVIDER',
   // API provider selection — without these, teammates default to firstParty
   // and send requests to the wrong endpoint (GitHub issue #23561)
   'CLAUDE_CODE_USE_BEDROCK',
@@ -121,6 +125,15 @@ const TEAMMATE_ENV_VARS = [
   'http_proxy',
   'NO_PROXY',
   'no_proxy',
+  // Third-party provider endpoints / auth overrides that may be configured
+  // only in the parent shell environment.
+  'OPENAI_API_KEY',
+  'OPENAI_ACCESS_TOKEN',
+  'CODEX_ACCESS_TOKEN',
+  'OPENROUTER_API_KEY',
+  'OPENAI_BASE_URL',
+  'OPENROUTER_BASE_URL',
+  'OPENCODE_BASE_URL',
   'SSL_CERT_FILE',
   'NODE_EXTRA_CA_CERTS',
   'REQUESTS_CA_BUNDLE',