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/dotenv/lib/cli-options.js

@@ -0,0 +1,17 @@
+const re = /^dotenv_config_(encoding|path|quiet|debug|override|DOTENV_KEY)=(.+)$/
+
+module.exports = function optionMatcher (args) {
+  const options = args.reduce(function (acc, cur) {
+    const matches = cur.match(re)
+    if (matches) {
+      acc[matches[1]] = matches[2]
+    }
+    return acc
+  }, {})
+
+  if (!('quiet' in options)) {
+    options.quiet = 'true'
+  }
+
+  return options
+}