Add PyInstaller release workflow

src/nte_history_exporter/cli.py

@@ -24,7 +24,10 @@ def build_parser() -> argparse.ArgumentParser:
         "--capture-backend",
         choices=["auto", "libpcap", "raw"],
         default="auto",
-        help="live capture backend; auto prefers Npcap/libpcap and falls back to raw sockets on Windows",
+        help=(
+            "live capture backend; auto prefers Npcap/libpcap and falls back to raw sockets on Windows "
+            "(default: %(default)s)"
+        ),
     )
     parser.add_argument("--copy-clipboard", action="store_true", help="copy a single live export to clipboard")
     parser.add_argument("--debug", action="store_true", help="also write research CSVs next to the JSON exports")

src/nte_history_exporter/live_capture/libpcap.py

@@ -103,7 +103,8 @@ def _load_library() -> ctypes.CDLL:
         npcap_dir = _windows_npcap_directory()
         if npcap_dir.is_dir() and hasattr(os, "add_dll_directory"):
             dll_directory = os.add_dll_directory(str(npcap_dir))
-        candidates.extend([str(npcap_dir / "wpcap.dll"), "wpcap.dll"])
+        candidates.append(str(npcap_dir / "wpcap.dll"))
+        candidates.append("wpcap.dll")
     elif sys.platform == "darwin":
         candidates.extend(
             [

src/nte_history_exporter/mappings.py

@@ -1,10 +1,11 @@
 from __future__ import annotations
 
 import json
+import sys
 from pathlib import Path
 from typing import Any
 
-PROJECT_ROOT = Path(__file__).resolve().parents[2]
+PROJECT_ROOT = Path(getattr(sys, "_MEIPASS", Path(__file__).resolve().parents[2]))
 MAPPINGS_DIR = PROJECT_ROOT / "mappings"