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/lib/aesgcmkw.js

@@ -0,0 +1,16 @@
+import { encrypt } from './encrypt.js';
+import { decrypt } from './decrypt.js';
+import { encode as b64u } from '../util/base64url.js';
+export async function wrap(alg, key, cek, iv) {
+    const jweAlgorithm = alg.slice(0, 7);
+    const wrapped = await encrypt(jweAlgorithm, cek, key, iv, new Uint8Array());
+    return {
+        encryptedKey: wrapped.ciphertext,
+        iv: b64u(wrapped.iv),
+        tag: b64u(wrapped.tag),
+    };
+}
+export async function unwrap(alg, key, encryptedKey, iv, tag) {
+    const jweAlgorithm = alg.slice(0, 7);
+    return decrypt(jweAlgorithm, key, encryptedKey, iv, tag, new Uint8Array());
+}