Fix PyInstaller build issues and add right-click edit

## Fixes
- Web interface now loads correctly in built app (use sys._MEIPASS for bundled web files)
- Macro execution no longer locks up (use pyperclip clipboard for Unicode text support)
- Right-click context menu works (use Qt signals instead of fragile parent traversal)

## Changes
- web_server.py: Use get_resource_path() for web directory
- macro_manager.py: Use clipboard paste for text commands instead of typewrite
- gui/main_window.py: Add edit_requested/delete_requested signals to MacroButton
- pyproject.toml: Add pyperclip dependency
- All .spec files: Add pyperclip to hidden imports

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

web_server.py

@@ -1,6 +1,7 @@
 # FastAPI web server for MacroPad
 
 import os
+import sys
 import asyncio
 from typing import List, Optional
 from contextlib import asynccontextmanager
@@ -14,6 +15,15 @@ import uvicorn
 from config import DEFAULT_PORT, VERSION
 
 
+def get_resource_path(relative_path):
+    """Get the path to a bundled resource file."""
+    if getattr(sys, 'frozen', False):
+        base_path = sys._MEIPASS
+    else:
+        base_path = os.path.dirname(os.path.abspath(__file__))
+    return os.path.join(base_path, relative_path)
+
+
 class Command(BaseModel):
     """Single command in a macro sequence."""
     type: str  # text, key, hotkey, wait, app
@@ -94,12 +104,12 @@ class WebServer:
             lifespan=lifespan
         )
 
-        # Serve static files from web directory
-        web_dir = os.path.join(self.app_dir, "web")
+        # Serve static files from web directory (bundled with app)
+        web_dir = get_resource_path("web")
         if os.path.exists(web_dir):
             app.mount("/static", StaticFiles(directory=web_dir), name="static")
 
-        # Serve macro images
+        # Serve macro images (user data directory)
         images_dir = os.path.join(self.app_dir, "macro_images")
         if os.path.exists(images_dir):
             app.mount("/images", StaticFiles(directory=images_dir), name="images")