fix(telegram): make Windows-unmasked tests cross-platform

Guarding the fcntl import let Windows collection succeed, which surfaced 3
telegram tests that had never run on Windows — all test-portability bugs:
- log_streamer byte-count broke on CRLF -> fixture writes newline=''
- bot_registry write-failure used Unix-only /proc -> file-as-parent (all OS)
- validate_bot_config rejected POSIX work_dir on Windows (Path.is_absolute is
  host-dependent) -> test absoluteness under PurePosixPath OR PureWindowsPath
493 telegram tests green on Linux; ruff clean.

src/aipass/skills/lib/telegram/apps/handlers/config.py

@@ -1,5 +1,5 @@
 # Standard library
-from pathlib import Path
+from pathlib import PurePosixPath, PureWindowsPath
 from typing import Optional, List
 
 # Logging
@@ -208,8 +208,11 @@ def validate_bot_config(config: object) -> tuple[bool, str]:
         return False, "bot_token must be a string in format 'id:hash'"
 
     if "work_dir" in config and config["work_dir"] is not None:
-        work_dir = Path(config["work_dir"])
-        if not work_dir.is_absolute():
+        # work_dir is a deployment-target (Linux) path. Test absoluteness under
+        # POSIX *and* Windows semantics so validation is platform-independent —
+        # a bare host Path().is_absolute() would reject "/home/..." on Windows.
+        work_dir = str(config["work_dir"])
+        if not (PurePosixPath(work_dir).is_absolute() or PureWindowsPath(work_dir).is_absolute()):
             return False, "work_dir must be an absolute path"
 
     if "allowed_user_ids" in config:

src/aipass/skills/lib/telegram/tests/test_bot_registry.py

@@ -6,7 +6,6 @@ No external dependencies beyond pytest.
 """
 
 import json
-from pathlib import Path
 
 import pytest
 from apps.handlers import bot_registry  # type: ignore[import-not-found]
@@ -191,11 +190,15 @@ class TestSaveRegistry:
         assert result is True
         assert bot_registry.REGISTRY_DIR.is_dir()
 
-    def test_returns_false_on_write_failure(self, monkeypatch):
+    def test_returns_false_on_write_failure(self, monkeypatch, tmp_path):
         """Should return False when writing fails (e.g. permission error)."""
-        # Point to an impossible path
-        monkeypatch.setattr(bot_registry, "REGISTRY_DIR", Path("/proc/nonexistent/impossible"))
-        monkeypatch.setattr(bot_registry, "REGISTRY_FILE", Path("/proc/nonexistent/impossible/_registry.json"))
+        # Put a regular file where a directory is expected. mkdir(parents=True)
+        # then fails on every OS (NotADirectoryError/FileExistsError), so this is
+        # cross-platform — unlike a hardcoded Unix-only path such as /proc/...
+        blocker = tmp_path / "blocker"
+        blocker.write_text("x", encoding="utf-8")
+        monkeypatch.setattr(bot_registry, "REGISTRY_DIR", blocker / "sub")
+        monkeypatch.setattr(bot_registry, "REGISTRY_FILE", blocker / "sub" / "_registry.json")
 
         result = bot_registry.save_registry({"bots": {}, "metadata": {}})
 

src/aipass/skills/lib/telegram/tests/test_log_streamer.py

@@ -62,11 +62,13 @@ def streamer(logs_dir, tmp_path):
 @pytest.fixture
 def streamer_with_files(logs_dir, tmp_path):
     """Create a LogStreamer after pre-populating matching and non-matching log files."""
-    # Create matching log files with content
-    (logs_dir / "api_main.log").write_text("line1\nline2\n", encoding="utf-8")
-    (logs_dir / "api_error.log").write_text("err1\n", encoding="utf-8")
+    # Create matching log files with content. newline="" disables newline
+    # translation so byte counts match len() on Windows too (\n stays 1 byte,
+    # not \r\n) — real log files are LF-terminated.
+    (logs_dir / "api_main.log").write_text("line1\nline2\n", encoding="utf-8", newline="")
+    (logs_dir / "api_error.log").write_text("err1\n", encoding="utf-8", newline="")
     # Create a non-matching file (should be ignored)
-    (logs_dir / "trigger_main.log").write_text("other\n", encoding="utf-8")
+    (logs_dir / "trigger_main.log").write_text("other\n", encoding="utf-8", newline="")
 
     return _make_streamer(logs_dir, tmp_path)