test: audit suite for meaningfulness, reach 100% coverage

The suite had 8 empty `pass` tests, two tests that made live network
calls to a production healthcheck endpoint, and a write_csv test that
only asserted the file existed. CI ran only test_komodo_deploy, so the
main suite never executed at all.

- Split tests by module: test_qlist, test_qprocess, test_qlogging_extra,
  test_apprise, test_qbt; rewrote test_qbitmaid and test_write_csv.
- qbt_fakes.py: shared fakes (FakeQbt, FakeQbtClient, FakeAPIError,
  StubPushover, FailingPushover, torrent factory).
- test_qbt.py loads the hyphenated qbit-maid.py via importlib and covers
  the __main__ entry point.
- Replaced the live-network tests with a RecordingRequests stub
  (suite time 14s -> 0.035s).
- .coveragerc + CI unit-tests job running the full suite with
  --fail-under=100.

127 unit tests, 100% statement coverage on all 5 first-party modules
(440 stmts), 15/15 mutations caught.

Seven pre-existing bugs are pinned by tests with KNOWN BUG docstrings
and left unfixed pending a decision.

qbt_fakes.py

@@ -0,0 +1,158 @@
+"""Shared fakes for the qbit-maid test suite.
+
+This is test scaffolding, not production code, so it is excluded from the
+coverage report (see ``.coveragerc``).
+"""
+import datetime
+import logging
+from collections import Counter
+
+# Keep test output clean: the pipeline logs warnings for ignored torrents.
+_test_logger = logging.getLogger("qbit-maid-test")
+_test_logger.addHandler(logging.NullHandler())
+_test_logger.propagate = False
+
+
+# ---------------------------------------------------------------------------
+# qbittorrentapi stand-in
+# ---------------------------------------------------------------------------
+class FakeApp:
+    version = "v4.6.2"
+    web_api_version = "2.9.3"
+
+
+class FakeAPIError(Exception):
+    """Stands in for qbittorrentapi.APIError."""
+
+
+class FakeQbtClient:
+    """Records calls instead of talking to a real qBittorrent instance."""
+
+    def __init__(self, torrents=None, login_error=None, **kwargs):
+        self.app = FakeApp()
+        self._torrents = list(torrents or [])
+        self._login_error = login_error
+        self.init_kwargs = kwargs
+        self.added_tags = []
+        self.deleted_tags = []
+        self.deleted = []
+        self.logged_in = False
+
+    def auth_log_in(self):
+        if self._login_error is not None:
+            raise self._login_error
+        self.logged_in = True
+
+    def torrents_info(self):
+        return list(self._torrents)
+
+    def torrents_add_tags(self, tags, torrent_hash):
+        self.added_tags.append((tags, torrent_hash))
+
+    def torrents_delete_tags(self, tags):
+        self.deleted_tags.append(list(tags))
+
+    def torrents_delete(self, delete_files, hashes):
+        self.deleted.append((delete_files, list(hashes)))
+
+
+def torrent(name="Example.Torrent.Release", tracker="https://tracker.example/announce",
+            category="general", tags="", seeding_time=999999, state="uploading",
+            ratio=2.0, time_active=999999, infohash="abc123", added_on=1):
+    """Build a torrent dict shaped like a qbittorrentapi response."""
+    return {
+        "name": name,
+        "tracker": tracker,
+        "category": category,
+        "tags": tags,
+        "seeding_time": seeding_time,
+        "state": state,
+        "ratio": ratio,
+        "time_active": time_active,
+        "infohash_v1": infohash,
+        "hash": infohash,
+        "added_on": added_on,
+    }
+
+
+# ---------------------------------------------------------------------------
+# Pushover stand-ins
+# ---------------------------------------------------------------------------
+class StubPushover:
+    """Records message() calls instead of hitting the Pushover API."""
+
+    def __init__(self):
+        self.calls = []
+
+    def message(self, user, body, **kwargs):
+        self.calls.append({"user": user, "body": body, "kwargs": kwargs})
+
+
+class FailingPushover:
+    def message(self, *args, **kwargs):
+        raise RuntimeError("pushover is down")
+
+
+# ---------------------------------------------------------------------------
+# The Qbt object
+# ---------------------------------------------------------------------------
+class FakeQbt:
+    """Stand-in for the Qbt object.
+
+    Defaults match the notifier tests (42 scanned, 7 removed, 4 orphaned).
+    Pipeline tests override ``torrent_list`` and ``qbt_client``.
+    """
+
+    def __init__(self, **overrides):
+        # --- notifier surface ---
+        self.config = {"pushover": {}}
+        self.total_torrents = 42
+        self.torrent_hash_delete_list = ["a"] * 7
+        self.up_tor_counter = 4
+        self.ignored_counter = 5
+        self.preme_tor_counter = 3
+        self.tracker_protected_tag = "ipt"
+        self.tracker_non_protected_tag = "public"
+        self.c = Counter({"ipt": 10, "public": 20})
+        self.delete_torrents = True
+        self.st = datetime.datetime(2026, 10, 27, 9, 54, 0)
+        self.et = datetime.datetime(2026, 10, 27, 9, 54, 12)
+        self.po_key = "USERKEY"
+        self.poc = StubPushover()
+        self.apprise_host = "localhost"
+        self.apprise_port = 8088
+        self.apprise_aurls = "mailto://user:pass@example.com"
+        self.tl = logging.getLogger("qbit-maid-test")
+
+        # --- pipeline surface ---
+        self.torrent_list = []
+        self.tracker_list = []
+        self.qbt_client = FakeQbtClient()
+        self.cat_whitelist = {}
+        self.tracker_whitelist = {"tracker.example": "tracker.example"}
+        self.ignored_tags = {}
+        self.min_age = 432000
+        self.max_age = 2419200
+        self.enable_telemetry = False
+        self.telemetry_outfile = "telemetry.csv"
+        self.enable_dragnet = False
+        self.dragnet_outfile = "orphaned.csv"
+        self.cv = None
+        self.use_pushover = False
+        self.use_apprise = False
+        self.extm = ""
+
+        for key, value in overrides.items():
+            setattr(self, key, value)
+
+    def reset_counters(self):
+        """Zero the pipeline counters.
+
+        The constructor defaults are the notifier fixture (42 scanned, 7
+        removed, ...), which pipeline tests must not inherit.
+        """
+        self.up_tor_counter = 0
+        self.preme_tor_counter = 0
+        self.ignored_counter = 0
+        self.torrent_hash_delete_list = []
+        return self