fix(proxy): support opt-in OpenAI reasoning shaping

src/proxy/profile-router.ts

@@ -11,6 +11,7 @@ export interface OpenAICompatProfileConfig {
   apiKey: string;
   provider: DroidProvider;
   insecure?: boolean;
+  forceOpenAIReasoningModel?: boolean;
   model?: string;
   opusModel?: string;
   sonnetModel?: string;
@@ -28,12 +29,18 @@ export interface OpenAICompatProfileEnv {
   ANTHROPIC_SMALL_FAST_MODEL?: string;
   CCS_DROID_PROVIDER?: string;
   CCS_OPENAI_PROXY_INSECURE?: string;
+  CCS_OPENAI_REASONING_MODEL?: string;
 }
 
 export function isOpenAICompatProvider(provider: DroidProvider | null): provider is DroidProvider {
   return provider === 'openai' || provider === 'generic-chat-completion-api';
 }
 
+function isTruthyEnv(value: string | undefined): boolean {
+  const normalized = value?.trim().toLowerCase();
+  return normalized === '1' || normalized === 'true' || normalized === 'yes' || normalized === 'on';
+}
+
 export function resolveOpenAICompatProfileConfig(
   profileName: string,
   settingsPath: string,
@@ -63,9 +70,8 @@ export function resolveOpenAICompatProfileConfig(
     baseUrl,
     apiKey,
     provider,
-    insecure:
-      env.CCS_OPENAI_PROXY_INSECURE === '1' ||
-      env.CCS_OPENAI_PROXY_INSECURE?.toLowerCase() === 'true',
+    insecure: isTruthyEnv(env.CCS_OPENAI_PROXY_INSECURE),
+    forceOpenAIReasoningModel: isTruthyEnv(env.CCS_OPENAI_REASONING_MODEL),
     model: env.ANTHROPIC_MODEL?.trim() || undefined,
     opusModel: env.ANTHROPIC_DEFAULT_OPUS_MODEL?.trim() || undefined,
     sonnetModel: env.ANTHROPIC_DEFAULT_SONNET_MODEL?.trim() || undefined,

src/proxy/server/messages-route.ts

@@ -31,15 +31,21 @@ function buildUpstreamHeaders(profile: OpenAICompatProfileConfig): Record<string
   };
 }
 
-function isDirectOpenAIReasoningChatModel(
+function isKnownOpenAIReasoningChatModel(model: string | undefined): boolean {
+  if (typeof model !== 'string') {
+    return false;
+  }
+
+  const normalized = model.trim().toLowerCase();
+  const modelName = normalized.split('/').pop() || normalized;
+  return DIRECT_OPENAI_REASONING_CHAT_MODEL.test(modelName);
+}
+
+function shouldShapeOpenAIReasoningChatPayload(
   profile: OpenAICompatProfileConfig,
   model: string | undefined
 ): boolean {
-  return (
-    profile.provider === 'openai' &&
-    typeof model === 'string' &&
-    DIRECT_OPENAI_REASONING_CHAT_MODEL.test(model.trim().toLowerCase())
-  );
+  return profile.forceOpenAIReasoningModel === true || isKnownOpenAIReasoningChatModel(model);
 }
 
 function isMiniMaxOpenAICompatProfile(profile: OpenAICompatProfileConfig): boolean {
@@ -124,7 +130,7 @@ function shapeUpstreamChatPayload(
     shaped = shapeMiniMaxChatPayload(shaped);
   }
 
-  if (!isDirectOpenAIReasoningChatModel(profile, shaped.model)) {
+  if (!shouldShapeOpenAIReasoningChatPayload(profile, shaped.model)) {
     return shaped;
   }