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/zod-to-json-schema/dist/esm/parsers/effects.js

@@ -0,0 +1,7 @@
+import { parseDef } from "../parseDef.js";
+import { parseAnyDef } from "./any.js";
+export function parseEffectsDef(_def, refs) {
+    return refs.effectStrategy === "input"
+        ? parseDef(_def.schema._def, refs)
+        : parseAnyDef(refs);
+}