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/literal.js

@@ -0,0 +1,21 @@
+export function parseLiteralDef(def, refs) {
+    const parsedType = typeof def.value;
+    if (parsedType !== "bigint" &&
+        parsedType !== "number" &&
+        parsedType !== "boolean" &&
+        parsedType !== "string") {
+        return {
+            type: Array.isArray(def.value) ? "array" : "object",
+        };
+    }
+    if (refs.target === "openApi3") {
+        return {
+            type: parsedType === "bigint" ? "integer" : parsedType,
+            enum: [def.value],
+        };
+    }
+    return {
+        type: parsedType === "bigint" ? "integer" : parsedType,
+        const: def.value,
+    };
+}