Switch UNIX socket paths to /run, and add a UNIX socket example for H… #110

Job	Run time
changes	8s
check-lockfile	6s
lint-crlf	4s
check-signoff	0s
lint-newsfile	0s
lint	1m 57s
check-sampleconfig	4m 47s
lint-clippy	4m 7s
check-schema-delta	25s
lint-clippy-nightly	2m 25s
Typechecking	5m 32s
lint-pydantic	4m 55s
lint-rustfmt	2m 8s
linting-done	1s
calculate-test-jobs	7s
trial-olddeps	8m 58s
portdb (3.8, 11)	3m 27s
complement (monolith, SQLite)	12m 28s
portdb (3.11, 15)	3m 32s
complement (monolith, Postgres)	13m 12s
complement (workers, Postgres)	20m 47s
trial-pypy	0s
cargo-bench	0s
cargo-test	0s
trial (3.8, sqlite, all)	7m 46s
trial (3.9, sqlite, all)	8m 1s
sytest (focal)	9m 47s
trial (3.10, sqlite, all)	7m 22s
trial (3.11, sqlite, all)	7m 45s
sytest (focal, postgres)	11m 42s
trial (3.12, sqlite, all)	5m 52s
sytest (focal, multi-postgres, workers)	15m 12s
trial (3.8, postgres, 11, all)	13m 8s
sytest (focal, multi-postgres, workers, asyncio)	21m 33s
trial (3.12, postgres, 16, all)	11m 4s
sytest (focal, asyncio)	11m 21s
trial (3.8, sqlite)	6m 38s
sytest (focal, postgres, asyncio)	12m 53s
sytest (testing, postgres)	11m 54s
export-data	3m 9s
tests-done	2s
	4h 14m 15s

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