refactor: make AI runtime z.ai-only and default to glm-5

.env.example

@@ -16,15 +16,9 @@ BETTER_AUTH_TRUSTED_ORIGINS=https://fiscal.b11studio.xyz
 # Legacy OPENCLAW_* variables are removed and no longer read by the app.
 # Coding endpoint is hardcoded in runtime: https://api.z.ai/api/coding/paas/v4
 ZHIPU_API_KEY=
-ZHIPU_MODEL=glm-4.7-flashx
+ZHIPU_MODEL=glm-5
 AI_TEMPERATURE=0.2
 
-# Local extraction model (Ollama, OpenAI-compatible API)
-# For host Ollama from Docker, use http://host.docker.internal:11434
-OLLAMA_BASE_URL=http://127.0.0.1:11434
-OLLAMA_MODEL=qwen3:8b
-OLLAMA_API_KEY=ollama
-
 # SEC API etiquette
 SEC_USER_AGENT=Fiscal Clone <support@fiscal.local>