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/jwt/verify.js

@@ -0,0 +1,15 @@
+import { compactVerify } from '../jws/compact/verify.js';
+import { validateClaimsSet } from '../lib/jwt_claims_set.js';
+import { JWTInvalid } from '../util/errors.js';
+export async function jwtVerify(jwt, key, options) {
+    const verified = await compactVerify(jwt, key, options);
+    if (verified.protectedHeader.crit?.includes('b64') && verified.protectedHeader.b64 === false) {
+        throw new JWTInvalid('JWTs MUST NOT use unencoded payload');
+    }
+    const payload = validateClaimsSet(verified.protectedHeader, verified.payload, options);
+    const result = { payload, protectedHeader: verified.protectedHeader };
+    if (typeof key === 'function') {
+        return { ...result, key: verified.key };
+    }
+    return result;
+}