CODEX revised with following function: 1. GDS building, 2. different user group with different authority.

backend/gds_builder.py

@@ -1,5 +1,6 @@
 import math
 import os
+import sys
 from dataclasses import dataclass, field
 from typing import Dict, List
 
@@ -16,13 +17,34 @@ class BuildResult:
     warnings: List[str] = field(default_factory=list)
 
 
-def build_project_gds(project_dir: str, output_path: str, pdk_public_root: str) -> BuildResult:
+def build_project_gds(
+    project_dir: str,
+    output_path: str,
+    pdk_public_root: str,
+    technology_manifest_path: str = None,
+    prefer_full_gds: bool = False,
+) -> BuildResult:
     """Build a hierarchical project GDS from saved cell YAML files."""
     cells = _load_project_cells(project_dir)
     if not cells:
         raise ValueError("No saved cell YAML files found for this project")
 
-    registry = PdkRegistry(pdk_public_root)
+    try:
+        return _build_with_mxpic_router(
+            project_dir,
+            output_path,
+            pdk_public_root,
+            technology_manifest_path,
+            prefer_full_gds,
+        )
+    except ImportError as router_error:
+        if _cells_have_links(cells):
+            raise RuntimeError(
+                "Routed Build GDS requires mxpic_router, nazca, and mxpic_forge when layout links are present. "
+                f"Router import failed: {router_error}"
+            ) from router_error
+
+    registry = PdkRegistry(pdk_public_root, prefer_full_gds=prefer_full_gds)
     os.makedirs(os.path.dirname(output_path), exist_ok=True)
 
     try:
@@ -37,6 +59,33 @@ def build_project_gds(project_dir: str, output_path: str, pdk_public_root: str)
             ) from nazca_error
 
 
+def _build_with_mxpic_router(
+    project_dir: str,
+    output_path: str,
+    pdk_root: str,
+    technology_manifest_path: str,
+    prefer_full_gds: bool,
+) -> BuildResult:
+    router_root = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..", "mxpic_router"))
+    if os.path.isdir(router_root) and router_root not in sys.path:
+        sys.path.insert(0, router_root)
+    from mxpic_router import build_project_gds as build_routed_project_gds
+
+    result = build_routed_project_gds(
+        project_dir=project_dir,
+        output_path=output_path,
+        pdk_root=pdk_root,
+        technology_manifest_path=technology_manifest_path,
+        prefer_full_gds=prefer_full_gds,
+    )
+    return BuildResult(
+        output_path=result.get("output_path", output_path),
+        engine=result.get("engine", "mxpic_router"),
+        cells_built=result.get("cells_built", []),
+        warnings=result.get("warnings", []),
+    )
+
+
 def _load_project_cells(project_dir: str) -> Dict[str, dict]:
     cells = {}
     for filename in sorted(os.listdir(project_dir)):
@@ -56,6 +105,14 @@ def _ordered_cell_names(cells: Dict[str, dict]) -> List[str]:
     return composites + projects
 
 
+def _cells_have_links(cells: Dict[str, dict]) -> bool:
+    for data in cells.values():
+        for bundle in (data.get("bundles") or {}).values():
+            if bundle.get("links"):
+                return True
+    return False
+
+
 def _build_with_gdstk(cells: Dict[str, dict], output_path: str, registry: PdkRegistry) -> BuildResult:
     import gdstk