Phase 7: Directory restructuring (messaging/ and tests/)

- Create messaging/platforms/ (base, discord, telegram, factory)
- Create messaging/rendering/ (discord_markdown, telegram_markdown)
- Create messaging/trees/ (data, repository, processor, queue_manager)
- Organize tests/ into api/, providers/, messaging/, cli/, config/
- Add backward-compatible re-exports at old locations
- Update handler.py and test_messaging_factory.py imports
- Fix Telegram type hints for TELEGRAM_AVAILABLE=False case
- Fix Python 3 except syntax in discord_markdown

Co-authored-by: Ali Khokhar <alishahryar2@gmail.com>

tests/config/test_logging_config.py

@@ -0,0 +1,60 @@
+"""Tests for config/logging_config.py."""
+
+import json
+import logging
+from pathlib import Path
+
+
+from config.logging_config import configure_logging
+
+
+def test_configure_logging_writes_json_to_file(tmp_path):
+    """configure_logging writes JSON lines to the specified file."""
+    log_file = str(tmp_path / "test.log")
+    configure_logging(log_file, force=True)
+
+    # Emit a log via stdlib (intercepted to loguru)
+    logger = logging.getLogger("test.module")
+    logger.info("Test message for JSON")
+
+    # Force flush - loguru may buffer
+    from loguru import logger as loguru_logger
+
+    loguru_logger.complete()
+
+    content = Path(log_file).read_text(encoding="utf-8")
+    lines = [line for line in content.strip().split("\n") if line]
+    assert len(lines) >= 1
+
+    # Each line should be valid JSON
+    for line in lines:
+        record = json.loads(line)
+        assert "text" in record or "message" in record or "record" in record
+
+
+def test_configure_logging_idempotent(tmp_path):
+    """configure_logging is idempotent - safe to call twice with force."""
+    log_file = str(tmp_path / "test.log")
+    configure_logging(log_file, force=True)
+    configure_logging(log_file, force=True)  # Should not raise
+
+    logger = logging.getLogger("test.idempotent")
+    logger.info("After second configure")
+
+
+def test_configure_logging_skips_when_already_configured(tmp_path):
+    """Without force, second call is a no-op (avoids reconfig on hot reload)."""
+    log_file = str(tmp_path / "test.log")
+    configure_logging(log_file, force=True)
+    # Second call without force - should skip; no exception, log file unchanged
+    configure_logging(str(tmp_path / "other.log"), force=False)
+    # Logs still go to first file
+    logger = logging.getLogger("test.skip")
+    logger.info("Still goes to first file")
+    from loguru import logger as loguru_logger
+
+    loguru_logger.complete()
+    assert (tmp_path / "test.log").exists()
+    assert "Still goes to first file" in (tmp_path / "test.log").read_text(
+        encoding="utf-8"
+    )