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/general/verify.js

@@ -0,0 +1,24 @@
+import { flattenedVerify } from '../flattened/verify.js';
+import { JWSInvalid, JWSSignatureVerificationFailed } from '../../util/errors.js';
+import { isObject } from '../../lib/is_object.js';
+export async function generalVerify(jws, key, options) {
+    if (!isObject(jws)) {
+        throw new JWSInvalid('General JWS must be an object');
+    }
+    if (!Array.isArray(jws.signatures) || !jws.signatures.every(isObject)) {
+        throw new JWSInvalid('JWS Signatures missing or incorrect type');
+    }
+    for (const signature of jws.signatures) {
+        try {
+            return await flattenedVerify({
+                header: signature.header,
+                payload: jws.payload,
+                protected: signature.protected,
+                signature: signature.signature,
+            }, key, options);
+        }
+        catch {
+        }
+    }
+    throw new JWSSignatureVerificationFailed();
+}