How do I create HTTP endpoints for a new entity?

How do I add HTTP REST endpoints for a new entity in ores.http.server?

Phase 1 — list and save (PR title: [http] Add {entity} list and save endpoints):

1. Add handler declarations to include/ores.http.server/routes/{domain}_routes.hpp (or create the routes class if it doesn't exist).
2. Implement handle_get_{entities} (paginated GET) and handle_save_{entity} (POST upsert) in src/routes/{domain}_routes.cpp.
3. Register both routes in register_routes() using the router builder (.auth_required(), .roles(...), .query_param(...), .response<T>()).
4. Register the routes class in src/application.cpp.
5. Build: cmake --build --preset linux-clang-debug-ninja --target ores.http.server.lib

Phase 2 — delete and history (PR title: [http] Add {entity} delete and history):

1. Add handle_delete_{entities} (DELETE batch) and handle_get_{entity}_history (GET /{id}/history) declarations.
2. Implement both handlers; register routes in register_routes().
3. Build and verify.

Phase 3 — recipe docs (PR title: [doc] Add {entity} HTTP endpoint recipes):

1. Add per-operation recipe files under doc/recipes/http/ (one per endpoint, following the how_do_i_*.org naming convention).

Build ores.http.server.lib cleanly and run the HTTP integration tests.

• HTTP entity patterns — route structure, handler conventions, auth hooks.
• codegen-add-http-entity — skill that drives this workflow.
• Entity lifecycle — layer ordering overview.