test: add explicit projected-port LES source profile

tests/validation/run_uniform_les_flow.py

@@ -62,6 +62,7 @@ def decode_macros(data, w, cx, cy):
 EXPERIMENTS = {
     "historical": "source_pins.json",
     "dev8403956": "source_pins_dev8403956.json",
+    "a135252": "source_pins_a135252.json",
 }
 
 
@@ -69,11 +70,10 @@ def source_guard(root, variant, experiment="historical"):
     manifest_path = HERE / "data/les_flow" / EXPERIMENTS[experiment]
     manifest = json.loads(manifest_path.read_text())
     for name, sha in manifest["sources"].items():
-        expected = (
-            manifest["candidate_header_sha256"]
-            if name == HEADER and variant == "corrected"
-            else sha
-        )
+        expected = sha
+        if name == HEADER:
+            expected = (manifest["candidate_header_sha256"] if variant == "corrected"
+                        else manifest.get("baseline_header_sha256", sha))
         if hashlib.sha256((root / name).read_bytes()).hexdigest() != expected:
             raise RuntimeError("Source pin mismatch: " + name)
     identity = dict(