feat: Add Smithery CLI deployment support

- Add smithery package as dependency
- Create smithery_server.py with @smithery.server() decorator
- Add SmitheryConfigSchema for session config (nextcloud_url, username, app_password)
- Add [tool.smithery] section to pyproject.toml
- Remove manual .well-known/mcp-config endpoint (Smithery handles this)

Smithery CLI will automatically:
- Extract config schema from the decorated function
- Handle session config parsing from query parameters
- Make config accessible via ctx.session_config in tools

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

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

pyproject.toml

@@ -39,6 +39,7 @@ dependencies = [
     "pymupdf>=1.26.6",
     "pymupdf4llm>=0.2.2",
     "pymupdf-layout>=1.26.6",
+    "smithery>=0.4.4",
 ]
 classifiers = [
     "Development Status :: 4 - Beta",
@@ -132,3 +133,6 @@ name = "testpypi"
 url = "https://test.pypi.org/simple/"
 publish-url = "https://test.pypi.org/legacy/"
 explicit = true
+
+[tool.smithery]
+server = "nextcloud_mcp_server.smithery_server:create_server"