test(core): extend coverage — console, errors, log, service, time, benchmark

Add missing test modules for previously untested core areas:
- console: ForegroundColorEnum, BackgroundColorEnum, Console methods
- errors: dependency_error, module_dependency_error
- log: LogLevel ordering/values, LogSettings, Logger (should_log, format, file write, fatal)
- service: HostedService, StartupTask, CronjobABC (start/stop/loop/task cancellation)
- time: TimeFormatSettings properties and setters
- utils: Benchmark.time / .memory / .all call-count and output

Also fix existing test files: environment cleanup, cron exception specificity,
json_processor kwargs bug doc, configuration_model_abc to_dict bug doc.
All 199 tests pass, black clean.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

test/core/console/console_test.py

@@ -0,0 +1,101 @@
+import pytest
+from cpl.core.console.foreground_color_enum import ForegroundColorEnum
+from cpl.core.console.background_color_enum import BackgroundColorEnum
+from cpl.core.console.console import Console
+
+# --- ForegroundColorEnum ---
+
+
+def test_foreground_color_enum_has_expected_values():
+    values = [e.value for e in ForegroundColorEnum]
+    assert "default" in values
+    assert "grey" in values
+    assert "red" in values
+    assert "green" in values
+    assert "yellow" in values
+    assert "blue" in values
+    assert "magenta" in values
+    assert "cyan" in values
+    assert "white" in values
+
+
+def test_foreground_color_enum_count():
+    assert len(ForegroundColorEnum) >= 9
+
+
+def test_foreground_color_enum_by_name():
+    assert ForegroundColorEnum["red"] == ForegroundColorEnum.red
+    assert ForegroundColorEnum["green"] == ForegroundColorEnum.green
+
+
+# --- BackgroundColorEnum ---
+
+
+def test_background_color_enum_has_expected_values():
+    values = [e.value for e in BackgroundColorEnum]
+    assert "on_default" in values
+    assert "on_red" in values
+    assert "on_green" in values
+    assert "on_blue" in values
+
+
+def test_background_color_enum_count():
+    assert len(BackgroundColorEnum) >= 9
+
+
+def test_background_color_enum_by_name():
+    assert BackgroundColorEnum["red"] == BackgroundColorEnum.red
+
+
+# --- Console basic methods (non-interactive, no terminal required) ---
+
+
+def test_console_write_does_not_raise(capsys):
+    Console.write("test")
+    captured = capsys.readouterr()
+    assert "test" in captured.out
+
+
+def test_console_write_line_does_not_raise(capsys):
+    Console.write_line("hello world")
+    captured = capsys.readouterr()
+    assert "hello world" in captured.out
+
+
+def test_console_write_line_multiple_args(capsys):
+    Console.write_line("a", "b", "c")
+    captured = capsys.readouterr()
+    assert "a" in captured.out
+
+
+def test_console_error_does_not_raise(capsys):
+    Console.error("something went wrong")
+    captured = capsys.readouterr()
+    assert "something went wrong" in captured.out or "something went wrong" in captured.err
+
+
+def test_console_set_foreground_color_does_not_raise():
+    Console.set_foreground_color(ForegroundColorEnum.red)
+    Console.set_foreground_color(ForegroundColorEnum.default)
+
+
+def test_console_set_background_color_does_not_raise():
+    Console.set_background_color(BackgroundColorEnum.blue)
+    Console.set_background_color(BackgroundColorEnum.default)
+
+
+def test_console_color_reset_does_not_raise():
+    Console.color_reset()
+
+
+def test_console_banner_does_not_raise(capsys):
+    # banner() renders text as ASCII art, not verbatim
+    Console.banner("Test Banner")
+    captured = capsys.readouterr()
+    assert len(captured.out) > 0
+
+
+def test_console_divider_does_not_raise(capsys):
+    Console.divider()
+    captured = capsys.readouterr()
+    assert len(captured.out) > 0