feat: add new agent components for context management and action routing

[ogabrielluiz]

This pull request introduces several improvements and new features to the agent components. Key changes include correcting the output model instantiation in LangflowAgent, handling invalid LLM responses in GenerateThoughtComponent, and updating action logging in DecideActionComponent. Additionally, the initial context is now included in the full context output. New components for context management and action routing have been implemented, enhancing the overall functionality and robustness of the agent system.

[codspeed-hq]

CodSpeed Performance Report

Merging #5319 will degrade performances by 18.22%

_{Comparing agent-context (197c6af) with main (243055e)}

Summary

⚡ 1 improvements
❌ 2 regressions
✅ 12 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	agent-context	Change
❌	test_get_and_cache_all_types_dict	1 ms	1.2 ms	-13.75%
⚡	test_setup_llm_caching	2.1 ms	1.2 ms	+77.49%
❌	test_successful_run_with_output_type_any	203 ms	248.2 ms	-18.22%

[Copilot]

Copilot reviewed 5 out of 8 changed files in this pull request and generated 2 comments.

Files not reviewed (3)

• src/backend/base/langflow/base/agents/context.py: Evaluated as low risk
• src/backend/base/langflow/components/agents/agent_context.py: Evaluated as low risk
• src/backend/base/langflow/components/agents/new_agent.py: Evaluated as low risk

Comments suppressed due to low confidence (3)

src/backend/base/langflow/components/agents/decide_action.py:39

• Ensure that action.log is a string before updating the context. Use str(action.log) to convert if necessary.

self.agent_context.update_context("Action", action.log)

src/backend/base/langflow/components/agents/execute_action.py:30

• [nitpick] The error message could be more descriptive. Consider including the action tool name and input in the message.

error_msg = f"Error: Action '{action}' not found in available tools."

src/backend/base/langflow/components/agents/agent_action_router.py:45

• [nitpick] The context message 'Router Decision' could be more specific to differentiate between different routing decisions.

self.agent_context.update_context("Router Decision", context_message)

[ogabrielluiz]

Closing - addressed by #11055