Add macOS app bundle packaging, native launcher, and MACOS_APP_PACKAGING guide

apple_llm.py

@@ -13,6 +13,7 @@ import json
 import os
 import shutil
 import subprocess
+import sys
 from pathlib import Path
 from loguru import logger
 
@@ -41,8 +42,25 @@ _NOISE_TRANSCRIPTS = {
     "[silence]",
 }
 
-HERE = Path(__file__).parent
-LLM_HELPER_PATH = HERE / "swift" / "llm-helper"
+def get_helper_path(binary_name: str) -> Path:
+    if getattr(sys, "frozen", False) and hasattr(sys, "_MEIPASS"):
+        p1 = Path(sys._MEIPASS) / binary_name
+        if p1.exists():
+            return p1
+        p2 = Path(sys._MEIPASS) / "swift" / binary_name
+        if p2.exists():
+            return p2
+    if getattr(sys, "frozen", False):
+        res_dir = Path(sys.executable).parent.parent / "Resources"
+        p1 = res_dir / binary_name
+        if p1.exists():
+            return p1
+        p2 = res_dir / "swift" / binary_name
+        if p2.exists():
+            return p2
+    return Path(__file__).parent / "swift" / binary_name
+
+LLM_HELPER_PATH = get_helper_path("llm-helper")
 
 
 def probe_apple_llm() -> tuple[bool, str]: