feat!: narrow AgentGraphRunner.run input from Any to str #673

Job	Run time
server-ai-windows (3.13)	21s
server-ai-windows (3.12)	24s
server-ai-openai-windows (3.14)	25s
server-ai-langchain-windows (3.11)	23s
server-ai-linux (3.12)	16s
server-ai-windows (3.14)	20s
server-ai-windows (3.11)	26s
server-ai-linux (3.14)	19s
server-ai-linux (3.10)	17s
server-ai-windows (3.10)	21s
server-ai-openai-windows (3.12)	28s
server-ai-openai-windows (3.13)	23s
server-ai-langchain-windows (3.10)	24s
server-ai-langchain-linux (3.12)	19s
server-ai-openai-linux (3.14)	29s
server-ai-langchain-windows (3.12)	40s
server-ai-langchain-linux (3.10)	20s
server-ai-langchain-linux (3.11)	21s
server-ai-langchain-windows (3.13)	22s
server-ai-openai-windows (3.11)	24s
server-ai-openai-linux (3.10)	29s
server-ai-openai-linux (3.13)	30s
server-ai-optimization-windows (3.14)	20s
server-ai-linux (3.13)	21s
server-ai-langchain-linux (3.13)	20s
server-ai-optimization-windows (3.13)	18s
server-ai-openai-linux (3.11)	29s
server-ai-optimization-linux (3.10)	13s
server-ai-optimization-linux (3.12)	15s
server-ai-optimization-linux (3.14)	10s
server-ai-openai-windows (3.10)	26s
server-ai-optimization-windows (3.12)	18s
server-ai-optimization-windows (3.10)	17s
server-ai-optimization-linux (3.11)	13s
server-ai-optimization-windows (3.11)	28s
server-ai-langchain-linux (3.14)	21s
server-ai-optimization-linux (3.13)	17s
server-ai-langchain-windows (3.14)	29s
server-ai-openai-linux (3.12)	27s
server-ai-linux (3.11)	19s
	14m 42s

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