fix(claude_code): greptile — robust version extraction + narrow pytest.raises

- run_daily.sh: extract semver via grep -oE instead of awk '{print $1}' so
  the parsed version survives a 'claude --version' output that ever prepends
  a label (e.g. 'Claude Code vX.Y.Z'). The previous awk pattern would silently
  publish the wrong string in that case.
- _driver_unit_tests/test_basic_messaging.py: narrow pytest.raises(BaseException)
  to pytest.raises(pytest.fail.Exception). pytest.fail() raises Failed, which
  inherits from BaseException; the new bound matches what the helper raises
  without also swallowing KeyboardInterrupt/SystemExit.

tests/claude_code/_driver_unit_tests/test_basic_messaging.py

@@ -146,7 +146,7 @@ def test_verify_streaming_fails_when_proxy_buffers(monkeypatch):
     outcome = DriverResult(text="1\n2\n3", events=_buffered_events())
     _install_fake_runner(monkeypatch, outcomes_by_model={model: outcome})
 
-    with pytest.raises(BaseException):
+    with pytest.raises(pytest.fail.Exception):
         run_basic_messaging_cell(
             compat_result=fake_result,
             models=[model],
@@ -189,7 +189,7 @@ def test_verify_streaming_requires_all_models_to_stream(monkeypatch):
     }
     _install_fake_runner(monkeypatch, outcomes_by_model=outcomes)
 
-    with pytest.raises(BaseException):
+    with pytest.raises(pytest.fail.Exception):
         run_basic_messaging_cell(
             compat_result=fake_result,
             models=list(outcomes.keys()),

tests/claude_code/cron_vm/run_daily.sh

@@ -163,8 +163,8 @@ LITELLM_VERSION="$(
 [[ -n "${LITELLM_VERSION}" ]] || die "could not resolve latest v*-stable tag in 5 pages of releases"
 log "resolved litellm: ${LITELLM_VERSION}"
 
-CLAUDE_CODE_VERSION="$(claude --version 2>/dev/null | awk '{print $1}')"
-[[ -n "${CLAUDE_CODE_VERSION}" ]] || die "could not read 'claude --version'"
+CLAUDE_CODE_VERSION="$(claude --version 2>/dev/null | grep -oE '[0-9]+\.[0-9]+\.[0-9]+([.-][A-Za-z0-9.-]+)?' | head -n1)"
+[[ -n "${CLAUDE_CODE_VERSION}" ]] || die "could not parse semver from 'claude --version'"
 log "local claude code: ${CLAUDE_CODE_VERSION}"
 
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