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/jwe/general/decrypt.js

@@ -0,0 +1,31 @@
+import { flattenedDecrypt } from '../flattened/decrypt.js';
+import { JWEDecryptionFailed, JWEInvalid } from '../../util/errors.js';
+import { isObject } from '../../lib/is_object.js';
+export async function generalDecrypt(jwe, key, options) {
+    if (!isObject(jwe)) {
+        throw new JWEInvalid('General JWE must be an object');
+    }
+    if (!Array.isArray(jwe.recipients) || !jwe.recipients.every(isObject)) {
+        throw new JWEInvalid('JWE Recipients missing or incorrect type');
+    }
+    if (!jwe.recipients.length) {
+        throw new JWEInvalid('JWE Recipients has no members');
+    }
+    for (const recipient of jwe.recipients) {
+        try {
+            return await flattenedDecrypt({
+                aad: jwe.aad,
+                ciphertext: jwe.ciphertext,
+                encrypted_key: recipient.encrypted_key,
+                header: recipient.header,
+                iv: jwe.iv,
+                protected: jwe.protected,
+                tag: jwe.tag,
+                unprotected: jwe.unprotected,
+            }, key, options);
+        }
+        catch {
+        }
+    }
+    throw new JWEDecryptionFailed();
+}