Function announce

tests/interaction/transports/test_flows.py:33–36

Emit one info-level log carrying the caller's label, then return it.

(label: str, ctx: Context)

    @mcp.tool()
    async def announce(label: str, ctx: Context) -> str:
        """Emit one info-level log carrying the caller's label, then return it."""
        await ctx.info(label)  # pyright: ignore[reportDeprecated]
        return label

    received_a: list[object] = []
    received_b: list[object] = []