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/jose/dist/webapi/jws/compact/verify.js

@@ -0,0 +1,21 @@
+import { flattenedVerify } from '../flattened/verify.js';
+import { JWSInvalid } from '../../util/errors.js';
+import { decoder } from '../../lib/buffer_utils.js';
+export async function compactVerify(jws, key, options) {
+    if (jws instanceof Uint8Array) {
+        jws = decoder.decode(jws);
+    }
+    if (typeof jws !== 'string') {
+        throw new JWSInvalid('Compact JWS must be a string or Uint8Array');
+    }
+    const { 0: protectedHeader, 1: payload, 2: signature, length } = jws.split('.');
+    if (length !== 3) {
+        throw new JWSInvalid('Invalid Compact JWS');
+    }
+    const verified = await flattenedVerify({ payload, protected: protectedHeader, signature }, key, options);
+    const result = { payload: verified.payload, protectedHeader: verified.protectedHeader };
+    if (typeof key === 'function') {
+        return { ...result, key: verified.key };
+    }
+    return result;
+}