Fix infinite recursion in load_project MCP tool

The server tool function `load_project` shadowed the imported project loader,
so it called itself instead of the parser -> RecursionError on every real
.knxproj. Alias the import as `load_project_file` and call that.

Add a regression test (server.load_project on a bad path must not raise
RecursionError) and a CHANGELOG entry. Found via end-to-end testing against
real ETS5/ETS6 fixtures from XKNX/xknxproject.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- **Critical:** `load_project` MCP tool recursed infinitely (`RecursionError`) on every
+  real `.knxproj` because the server tool function shadowed the imported project loader.
+  The tool now delegates correctly. Added a regression test that fails on recursion.
+  Found via end-to-end testing against real ETS5/ETS6 project files.
+
 ## [0.1.0] — 2026-06-28
 
 Initial public beta.

nickol_knx_mcp/server.py

@@ -15,7 +15,7 @@ from typing import Any, Optional
 
 from mcp.server.fastmcp import FastMCP
 
-from .project import load_project, LoadedProject
+from .project import load_project as load_project_file, LoadedProject
 from .analyze import validate_naming, detect_missing_status, detect_dpt_issues
 from .generate_ha import generate_ha_yaml
 from .generate_ets import generate_ets_csv, generate_ets_xml
@@ -69,7 +69,7 @@ def load_project(path: str, password: Optional[str] = None,
         password: Project password, if the .knxproj is protected.
         language: Optional language code (e.g. 'de-DE', 'ru-RU').
     """
-    proj = load_project(path, password=password, language=language)
+    proj = load_project_file(path, password=password, language=language)
     _STATE["project"] = proj
     return {
         "loaded": True,

tests/test_pipeline.py

@@ -126,3 +126,21 @@ rep = build_report(proj)
 print(rep["summary"])
 print("\n--- report head ---")
 print("\n".join(rep["markdown"].splitlines()[:30]))
+
+# --------------------------------------------------------------------------- #
+# Regression: the MCP server tool `load_project` must delegate to the project
+# loader, not call itself (a name-shadowing bug once caused infinite recursion).
+# Calling it on a bad path must raise a normal error, never RecursionError.
+# --------------------------------------------------------------------------- #
+print("\n=== REGRESSION: server.load_project must not recurse ===")
+import nickol_knx_mcp.server as _server
+try:
+    _server.load_project("/nonexistent/__no_such__.knxproj")
+except RecursionError as exc:  # pragma: no cover
+    raise AssertionError(
+        "server.load_project recursed — load_project name-shadowing regression"
+    ) from exc
+except Exception as exc:
+    print(f"OK: delegated, raised {type(exc).__name__} (expected, not RecursionError)")
+else:
+    print("OK: delegated (no error)")