fix(pi): converge worker failures and thinking state

electron/coding-runtime/pi/provider-config.ts

@@ -41,9 +41,11 @@ export interface PiProviderModelDescriptor {
   contextWindow?: number;
   maxOutputTokens?: number;
   compat?: {
-    thinkingFormat: 'openrouter';
-    sessionAffinityFormat: 'openrouter';
+    thinkingFormat?: 'deepseek' | 'openrouter';
+    sessionAffinityFormat?: 'openrouter';
+    requiresReasoningContentOnAssistantMessages?: boolean;
   };
+  thinkingLevelMap?: Partial<Record<ProductModelRef['thinkingLevel'], string | null>>;
 }
 
 export interface PiProviderDescriptor {
@@ -71,6 +73,7 @@ export interface PiModelsFile {
       maxTokens?: number;
       cost: { input: number; output: number; cacheRead: number; cacheWrite: number };
       compat?: PiProviderModelDescriptor['compat'];
+      thinkingLevelMap?: PiProviderModelDescriptor['thinkingLevelMap'];
     }>;
   }>;
 }
@@ -312,10 +315,17 @@ function modelDescriptor(
     id: modelId,
     name: summary?.name || (typeof backend?.name === 'string' && backend.name.trim()) || modelId,
     input: supportsImage ? ['text', 'image'] : ['text'],
-    reasoning: summary?.supportsReasoning === true || backend?.reasoning === true,
+    reasoning: summary?.supportsReasoning === true
+      || profile?.pi?.reasoning === true
+      || backend?.reasoning === true,
     ...(contextWindow ? { contextWindow } : {}),
     ...(maxOutputTokens ? { maxOutputTokens } : {}),
-    ...(compat ? { compat } : {}),
+    ...(compat || profile?.pi?.compat
+      ? { compat: { ...compat, ...profile?.pi?.compat } }
+      : {}),
+    ...(profile?.pi?.thinkingLevelMap
+      ? { thinkingLevelMap: { ...profile.pi.thinkingLevelMap } }
+      : {}),
   };
 }
 
@@ -403,6 +413,9 @@ function modelsFileForDescriptors(descriptors: readonly PiProviderDescriptor[]):
           ...(model.maxOutputTokens ? { maxTokens: model.maxOutputTokens } : {}),
           cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
           ...(model.compat ? { compat: { ...model.compat } } : {}),
+          ...(model.thinkingLevelMap
+            ? { thinkingLevelMap: { ...model.thinkingLevelMap } }
+            : {}),
         })),
       },
     ])),