feat: add local zero-cost configuration

config/javis.example.toml

@@ -1,25 +1,20 @@
-# Entwurf für eine spätere TOML-Konfiguration.
-# Der erste Chat liest die in .env.example genannten Umgebungsvariablen.
-
-[app]
-display_name = "Javis"
-language = "de"
-
-[paths]
-data_dir = ""
-
 [providers]
-active = "ollama"
+active = "auto"
+
+[providers.ollama]
 model = "qwen3:8b"
-ollama_base_url = "http://127.0.0.1:11434"
+base_url = "http://127.0.0.1:11434"
 timeout_seconds = 180
-cloud_fallback = false
 
-[obsidian]
+[providers.gemini]
 enabled = false
-vault_path = ""
-write_areas = []
-
-[security]
-secrets_provider = "none"
-require_approval_for_writes = true
+model = "gemini-3.6-flash"
+optional_model = "gemini-3.5-flash-lite"
+free_only = true
+billing_confirmed_disabled = false
+max_requests_per_day = 25
+max_input_chars = 12000
+max_output_tokens = 1024
+timeout_seconds = 30
+max_attempts = 2
+max_context_messages = 6