chore: replace personal email and add docker-compose dev warning

config.yaml

@@ -180,7 +180,7 @@ edges:
 #   cache_ttl: 604800
 #   enable_ancestry: true
 #   similarity_threshold: 0.85
-#   wikidata_user_agent: "KnowledgeTree/1.0 (carlosgomezsoza@gmail.com)"
+#   wikidata_user_agent: "KnowledgeTree/1.0 (example@openktree.com)"
 #   crystallization_child_threshold: 10
 #   crystallization_child_change_ratio: 0.5
 #   crystallization_model: ""

docker-compose.yml

@@ -1,3 +1,6 @@
+# DEVELOPMENT ONLY - Do not use these credentials in production.
+# For production, use environment variables from a secure vault.
+
 services:
   postgres:
     image: pgvector/pgvector:pg16

libs/kt-config/src/kt_config/settings.py

@@ -400,7 +400,7 @@ class Settings(BaseSettings):
     redis_url: str = "redis://localhost:6379/0"
     ontology_cache_ttl: int = 604800  # 7 days in seconds
     ontology_model: str = "openrouter/x-ai/grok-4.1-fast"
-    wikidata_user_agent: str = "KnowledgeTree/1.0 (carlosgomezsoza@gmail.com)"
+    wikidata_user_agent: str = "KnowledgeTree/1.0 (example@openktree.com)"
     enable_ontology_ancestry: bool = True
     ontology_similarity_threshold: float = 0.82  # embedding threshold for matching existing nodes