fix: seed AI model config at runtime

src/services/config_service.py

@@ -91,6 +91,34 @@ def save_config(data):
         logger.error("Failed to save config to %s: %s", config_file, exc)
 
 
+def _seed_factory_config_if_missing(filename):
+    """Copy a packaged config template to user config only when missing."""
+    from shutil import copy2
+    from services.file_service import get_app_dir, get_config_path
+
+    target = get_config_path(filename)
+    if target.exists():
+        return False
+
+    source = get_app_dir() / "config" / filename
+    if not source.exists():
+        return False
+
+    try:
+        target.parent.mkdir(parents=True, exist_ok=True)
+        copy2(str(source), str(target))
+        logger.info("Seeded factory config from %s to %s", source, target)
+        return True
+    except OSError as exc:
+        logger.warning(
+            "Failed to seed factory config from %s to %s: %s",
+            source,
+            target,
+            exc,
+        )
+        return False
+
+
 def load_ai_models():
     """Load AI model configs from ai_models.json.
 
@@ -99,6 +127,7 @@ def load_ai_models():
     Keys live only in ~/.cmbot and are never committed (docs/11 §11).
     """
     from services.file_service import get_config_path
+    _seed_factory_config_if_missing(_AI_MODELS_FILENAME)
     models_file = get_config_path(_AI_MODELS_FILENAME)
     if not models_file.exists():
         logger.info("AI models file not found: %s", models_file)