Add PyInstaller Windows release build system.

Frozen builds resolve paths correctly, stage portable onedir output, and zip releases for distribution.

config.py

@@ -1,25 +1,35 @@
 """
 Configuration and constants for GODCWAK.
 """
-import os
+import json
+import shutil
+import sys
 from pathlib import Path
 
 APP_NAME = "GODCWAK"
 APP_VERSION = "1.0"
 
-# Paths
-BASE_DIR = Path(__file__).parent
+
+def _is_frozen() -> bool:
+    return getattr(sys, "frozen", False)
+
+
+def _exe_dir() -> Path:
+    return Path(sys.executable).resolve().parent
+
+
+def _bundle_dir() -> Path:
+    if _is_frozen() and hasattr(sys, "_MEIPASS"):
+        return Path(sys._MEIPASS)
+    return Path(__file__).resolve().parent
+
+
+# Writable root: next to the exe when frozen, project root in dev
+BASE_DIR = _exe_dir() if _is_frozen() else Path(__file__).resolve().parent
+BUNDLE_DIR = _bundle_dir()
 DATA_DIR = BASE_DIR / "data"
-ASSETS_DIR = BASE_DIR / "assets"
-
-# bug #35: removed DATA_DIR.mkdir() side effect from module level.
-# Call ensure_dirs() explicitly at startup instead.
-
-
-def ensure_dirs():
-    """Create required application directories. Call once at startup."""
-    DATA_DIR.mkdir(exist_ok=True)
-    ASSETS_DIR.mkdir(exist_ok=True)
+_assets_bundle = BUNDLE_DIR / "assets"
+ASSETS_DIR = _assets_bundle if _assets_bundle.is_dir() else BASE_DIR / "assets"
 
 
 # Facebook
@@ -69,6 +79,23 @@ DEFAULT_OLLAMA_CONFIG = {
     "retry_limit": 3,
 }
 
+
+def ensure_dirs():
+    """Create writable dirs and seed default Ollama config for packaged builds."""
+    DATA_DIR.mkdir(exist_ok=True)
+    (BASE_DIR / "assets").mkdir(exist_ok=True)
+
+    if not OLLAMA_CONFIG_FILE.exists():
+        bundled = BUNDLE_DIR / "config_ollama.json"
+        if bundled.is_file():
+            shutil.copy2(bundled, OLLAMA_CONFIG_FILE)
+        else:
+            OLLAMA_CONFIG_FILE.write_text(
+                json.dumps(DEFAULT_OLLAMA_CONFIG, indent=2),
+                encoding="utf-8",
+            )
+
+
 # GUI Theme Colors
 THEME = {
     "bg_dark": "#0a0a0f",