How do I create shell commands for a new entity?

How do I add shell REPL commands for a new entity in ores.shell?

Phase 1 — list and add (PR: [shell] Add {entity} list and add commands):

1. Create {entity}_commands.hpp in include/ores.shell/app/commands/ with the static class shape from Shell entity patterns.
2. Implement {entity}_commands.cpp in src/app/commands/: create the submenu, register list and add operations.
3. Call {entity}_commands::register_commands(menu, session) from src/app/application.cpp.
4. Build and smoke-test: start ores.shell and exercise {entities} list and {entities} add.

Phase 2 — history (PR: [shell] Add {entity} history command):

1. Add process_get_{entity}_history handler.
2. Register history subcommand in register_commands.
3. Build and smoke-test.

Phase 3 — recipe docs (PR: [doc] Add {entity} shell command recipes):

1. Add how_do_i_*.org recipes under doc/recipes/shell/ (one per operation).

Start ores.shell, connect, and exercise each subcommand interactively against a local database.

• Shell entity patterns — class layout, registration, file locations.
• codegen-add-shell-entity — skill that drives this workflow.
• Entity lifecycle — layer ordering overview.