Bump `_PROC_SPAWN_WAIT` and use `test_log` in `daemon`

For more reliability with the oob registrar using tests
via the `daemon` fixture,
- increase spawn-wait to `2` in CI, `1` OW; drop
  the old py<3.7 branch.
- move `_ci_env` to module-level (above `_non_linux`)
  so `_PROC_SPAWN_WAIT` can reference it at parse time.
- add `test_log` fixture param to `daemon()`, use it
  for the error-on-exit log line instead of bare `log`.

(this commit msg was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code

tests/conftest.py

@@ -23,6 +23,7 @@ pytest_plugins: list[str] = [
     'tractor._testing.pytest',
 ]
 
+_ci_env: bool = os.environ.get('CI', False)
 _non_linux: bool = platform.system() != 'Linux'
 
 # Sending signal.SIGINT on subprocess fails on windows. Use CTRL_* alternatives
@@ -36,9 +37,8 @@ else:
     _INT_SIGNAL = signal.SIGINT
     _INT_RETURN_CODE = 1 if sys.version_info < (3, 8) else -signal.SIGINT.value
     _PROC_SPAWN_WAIT = (
-        0.6
+        2 if _ci_env
-        if sys.version_info < (3, 7)
+        else 1
-        else 0.4
     )
 
 
@@ -115,9 +115,6 @@ def test_log(
     yield _log
 
 
-_ci_env: bool = os.environ.get('CI', False)
-
-
 @pytest.fixture(scope='session')
 def ci_env() -> bool:
     '''
@@ -152,6 +149,7 @@ def daemon(
     reg_addr: tuple[str, int],
     tpt_proto: str,
     ci_env: bool,
+    test_log: tractor.log.StackLevelAdapter,
 
 ) -> subprocess.Popen:
     '''
@@ -240,7 +238,7 @@ def daemon(
         if rc < 0:
             raise RuntimeError(msg)
 
-        log.error(msg)
+        test_log.error(msg)
 
 
 # @pytest.fixture(autouse=True)