feat(projects): automate project infrastructure provisioning

app/infra/db/project_routing.py

@@ -62,12 +62,18 @@ def get_project_database_name(name: str) -> str:
 
 
 def get_project_template_database_name(name: str | None = None) -> str:
-    """Return the configured immutable template for the WNDB schema version.
+    """Return the network-data template paired with one physical BizDB.
 
-    The template belongs to the database schema version, not to an individual
-    logical project or its temporary physical database name.
+    Project routing is resolved before the suffix is applied, so a logical
+    project such as ``tjwater_v2`` uses ``tjwater_v2_template``.
     """
-    return settings.WNDB_TEMPLATE_DB_NAME
+    database_name = get_project_database_name(name or settings.DB_NAME)
+    return f"{database_name}_template"
+
+
+def get_schema_template_database_name() -> str:
+    """Return the immutable, data-free template used to create BizDB schemas."""
+    return settings.WNDB_SCHEMA_TEMPLATE_DB_NAME
 
 
 def get_project_pgconn_string(db_name: str | None = None) -> str: