[v2] Dispatcher/ServerRunner receive-path swap — replaces BaseSession… #2585

Job	Run time
checks / pre-commit	42s
checks / readme-snippets	11s
checks / test (3.11, lowest-direct, ubuntu-latest)	57s
checks / test (3.10, locked, windows-latest)	1m 33s
checks / test (3.11, locked, windows-latest)	1m 13s
checks / test (3.10, locked, ubuntu-latest)	53s
checks / test (3.10, lowest-direct, ubuntu-latest)	59s
checks / test (3.11, lowest-direct, windows-latest)	1m 45s
checks / test (3.12, lowest-direct, windows-latest)	1m 23s
checks / test (3.14, locked, ubuntu-latest)	1m 51s
checks / test (3.14, locked, windows-latest)	2m 11s
checks / test (3.11, locked, ubuntu-latest)	49s
checks / test (3.12, lowest-direct, ubuntu-latest)	59s
checks / test (3.12, locked, ubuntu-latest)	52s
checks / test (3.13, locked, windows-latest)	54s
checks / test (3.13, locked, ubuntu-latest)	44s
checks / test (3.13, lowest-direct, windows-latest)	1m 25s
checks / test (3.14, lowest-direct, windows-latest)	1m 25s
checks / test (3.13, lowest-direct, ubuntu-latest)	51s
checks / test (3.14, lowest-direct, ubuntu-latest)	50s
checks / test (3.10, lowest-direct, windows-latest)	1m 38s
checks / test (3.12, locked, windows-latest)	1m 31s
all-green	4s
	25m 40s

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