Use sender, recipient instead of sender_name and recipient_name

[kumaranvpl]

Why are these changes needed?

Related issue number

Closes #1585

Checks

• I've included any doc changes needed for https://docs.ag2.ai/. See https://docs.ag2.ai/docs/contributor-guide/documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[CLAassistant]

All committers have signed the CLA.

[Copilot]

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (3)

autogen/messages/agent_messages.py:95

• [nitpick] The updated decorator mapping is clear; please verify that similar mappings throughout this module follow the same pattern for consistency.

@deprecated_by(FunctionResponseEvent, param_mapping={"sender_name": "sender", "recipient_name": "recipient"})

autogen/events/agent_events.py:299

• [nitpick] Using inline hasattr() checks works but consider abstracting this conversion into a helper to promote consistency across event initializers.

sender = chat_info["sender"].name if hasattr(chat_info["sender"], "name") else chat_info["sender"]

autogen/events/agent_events.py:911

• [nitpick] The repeated conversion logic for code_blocks could be refactored into a helper function to improve readability and maintainability.

code_blocks = [code_block.language if hasattr(code_block, "language") else code_block for code_block in code_blocks]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ There is a different number of reports uploaded between BASE (bc81462) and HEAD (99e71d8). Click for more details.

HEAD has 1339 uploads less than BASE

Flag	BASE (bc81462)	HEAD (99e71d8)
3.9	89	0
ubuntu-latest	160	1
commsagent-discord	9	0
optional-deps	157	0
core-without-llm	14	1
macos-latest	103	0
3.11	71	1
3.10	98	0
3.13	88	0
browser-use	6	0
3.12	32	0
graph-rag-falkor-db	6	0
commsagent-telegram	9	0
windows-latest	115	0
rag	7	0
retrievechat-mongodb	9	0
jupyter-executor	9	0
interop-pydantic-ai	9	0
interop-crewai	9	0
retrievechat-pgvector	10	0
docs	6	0
mcp	12	0
twilio	9	0
wikipedia-api	13	0
websockets	9	0
crawl4ai	13	0
interop	13	0
retrievechat-qdrant	13	0
google-api	13	0
interop-langchain	9	0
cerebras	16	0
teachable	4	0
agent-eval	1	0
long-context	3	0
llama-index-agent	3	0
lmm	4	0
gpt-assistant-agent	3	0
gemini	12	0
retrievechat	7	0
websurfer	15	0
retrievechat-couchbase	3	0
anthropic	14	0
mistral	13	0
bedrock	15	0
together	12	0
groq	12	0
cohere	13	0
ollama	13	0
swarm	14	0
integration	23	0
falkordb	2	0
core-llm	11	0
neo4j	2	0
captainagent	1	0
autobuild	1	0
openai-realtime	2	0
deepseek	2	0
openai	1	0

Files with missing lines	Coverage Δ
autogen/events/agent_events.py	96.49% <100.00%> (-1.66%)	⬇️
autogen/events/base_event.py	87.50% <100.00%> (+2.08%)	⬆️
autogen/messages/agent_messages.py	58.37% <100.00%> (ø)
autogen/version.py	100.00% <100.00%> (ø)

... and 74 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.