feat: Initial confluence-mcp server for realtime collaboration

Provides 8 MCP tools for Confluence Cloud:
- confluence_list_spaces, confluence_create_space
- confluence_search, confluence_get_page
- confluence_create_page, confluence_update_page
- confluence_get_comments, confluence_add_comment

Uses Confluence REST API v2 with basic auth.
Registered in Claude Code and mcp-proxy.

Refs: CF-935

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/merge-descriptors/index.js

@@ -0,0 +1,26 @@
+'use strict';
+
+function mergeDescriptors(destination, source, overwrite = true) {
+	if (!destination) {
+		throw new TypeError('The `destination` argument is required.');
+	}
+
+	if (!source) {
+		throw new TypeError('The `source` argument is required.');
+	}
+
+	for (const name of Object.getOwnPropertyNames(source)) {
+		if (!overwrite && Object.hasOwn(destination, name)) {
+			// Skip descriptor
+			continue;
+		}
+
+		// Copy descriptor
+		const descriptor = Object.getOwnPropertyDescriptor(source, name);
+		Object.defineProperty(destination, name, descriptor);
+	}
+
+	return destination;
+}
+
+module.exports = mergeDescriptors;