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/v3/helpers/partialUtil.d.ts

@@ -0,0 +1,8 @@
+import type { ZodArray, ZodNullable, ZodObject, ZodOptional, ZodRawShape, ZodTuple, ZodTupleItems, ZodTypeAny } from "../types.js";
+export declare namespace partialUtil {
+    type DeepPartial<T extends ZodTypeAny> = T extends ZodObject<ZodRawShape> ? ZodObject<{
+        [k in keyof T["shape"]]: ZodOptional<DeepPartial<T["shape"][k]>>;
+    }, T["_def"]["unknownKeys"], T["_def"]["catchall"]> : T extends ZodArray<infer Type, infer Card> ? ZodArray<DeepPartial<Type>, Card> : T extends ZodOptional<infer Type> ? ZodOptional<DeepPartial<Type>> : T extends ZodNullable<infer Type> ? ZodNullable<DeepPartial<Type>> : T extends ZodTuple<infer Items> ? {
+        [k in keyof Items]: Items[k] extends ZodTypeAny ? DeepPartial<Items[k]> : never;
+    } extends infer PI ? PI extends ZodTupleItems ? ZodTuple<PI> : never : never : T;
+}