fix(mcp): remove anyOf from get_ast_node schema for Claude API compatibility

Claude API does not support oneOf/allOf/anyOf at the top level of tool
input_schema. Replace with empty required array; validation is handled
in Rust code.

Bump to v0.5.22.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sdsrss

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "code-graph-mcp"
-version = "0.5.21"
+version = "0.5.22"
 edition = "2021"
 
 [features]

Cargo.toml

@@ -1,6 +1,6 @@
 {
   "name": "@sdsrs/code-graph",
-  "version": "0.5.21",
+  "version": "0.5.22",
   "description": "MCP server that indexes codebases into an AST knowledge graph with semantic search, call graph traversal, and HTTP route tracing",
   "license": "MIT",
   "repository": {

package.json

@@ -74,10 +74,7 @@ impl ToolRegistry {
                         "include_references": { "type": "boolean", "description": "Include callers/callees (default false)" },
                         "context_lines": { "type": "number", "description": "Surrounding source lines to include (default 0)" }
                     },
-                    "anyOf": [
-                        { "required": ["symbol_name"] },
-                        { "required": ["node_id"] }
-                    ]
+                    "required": []
                 }),
             },
             ToolDefinition {