Version 7.1.5

Patch release: the DB Agent template now generates without an internal server error. Backend-only fix — no metamodel, generator, or public API contract changes. The frontend submodule pointer is unchanged.

Highlights

  • DB Agent template generation no longer fails with ``NameError: name ‘ReceiveTextEvent’ is not defined``: the shipped dbagent.json template has an event-only transition ("event": "ReceiveTextEvent" with no conditions), which agent_model_builder.agent_model_to_code emits as initial.when_event(ReceiveTextEvent()).go_to(db_reply). The generated module’s import block pulled in Agent, AgentReply, LLMReply, RAGReply, DBReply and the LLM classes, but none of the *Event classes. generate_agent_files in generation_router.py then exec_module-ed the generated file and raised, which the frontend surfaced as a 500 on /besser_api/generate-output. The other four shipped templates (faqragagent, greetingagent, gymagent, libraryagent) hid the bug because they use intent-matcher transitions and the builder emits those as when_intent_matched(intent).go_to(...) without ever referencing the event class directly.

  • Fix: besser/utilities/buml_code_builder/agent_model_builder.py now adds ReceiveTextEvent, ReceiveFileEvent, ReceiveJSONEvent, ReceiveMessageEvent, WildcardEvent, and DummyEvent to the from besser.BUML.metamodel.state_machine.agent import ... line it writes into the generated agent_model.py. All six are already exported by besser.BUML.metamodel.state_machine.agent — this change only affects generated code, not runtime behavior of the builder itself.

  • Regression coverage: all five shipped agent templates (dbagent, faqragagent, greetingagent, gymagent, libraryagent) were round-tripped through process_agent_diagram → generate_agent_files and each produces a valid agent_output.zip containing a syntactically valid agent_model.py and the BAFGenerator output bundle.