feat: add per-module max_rc for final link

scripts/mbt/project.py

@@ -58,6 +58,7 @@ class LinkModule:
     include: list[str] # own members to include explicitly
     dep_includes: dict # {dep_key: "*" | [member, ...]} for non-autocall deps
     setcode: str = ""  # SETCODE statement value, e.g. "AC(1)"
+    max_rc: int = 0    # max acceptable RC for final link (0 = strict)
 
 
 @dataclass
@@ -210,6 +211,7 @@ def _parse(cls, data: dict) -> "ProjectConfig":
                 include=list(mod.get("include", ["@@CRT1", mod_name])),
                 dep_includes=dep_includes,
                 setcode=mod.get("setcode", ""),
+                max_rc=int(mod.get("max_rc", 0)),
             ))
 
         # Source directories — partial override is allowed

scripts/mvslink.py

@@ -232,8 +232,7 @@ def main() -> int:
             _log_error(f"Failed to submit link job for {mod.name}: {e}")
             return EXIT_BUILD
 
-        # Full link: RC=4 (informational warning) may be acceptable with LET
-        if result.rc > 4:
+        if result.rc > mod.max_rc:
             log_file = _save_job_log(result, mod.name)
             _log_error(f"{mod.name} link failed (RC={result.rc})")
             _log(f"Job: {result.jobname} / {result.jobid}")

tests/test_project.py

@@ -71,6 +71,7 @@ def test_link_modules(self):
         self.assertEqual(mod.options, ["RENT", "REUS"])
         self.assertEqual(mod.include, ["@@CRT1", "HELLO"])
         self.assertEqual(mod.setcode, "")
+        self.assertEqual(mod.max_rc, 0)
 
     def test_artifacts(self):
         self.assertFalse(self.config.artifact_headers)
@@ -332,5 +333,52 @@ def test_setcode_default_empty(self):
         self.assertEqual(mod.setcode, "")
 
 
+class TestLinkModuleMaxRc(unittest.TestCase):
+
+    def _write(self, content: str) -> Path:
+        self._tmp = tempfile.mkdtemp()
+        p = Path(self._tmp) / "project.toml"
+        p.write_text(content, encoding="utf-8")
+        return p
+
+    def tearDown(self):
+        import shutil
+        if hasattr(self, "_tmp"):
+            shutil.rmtree(self._tmp, ignore_errors=True)
+
+    def test_max_rc_default_zero(self):
+        toml = (
+            "[project]\nname=\"myapp\"\nversion=\"1.0.0\"\ntype=\"application\"\n"
+            "[mvs.build.datasets.ncalib]\n"
+            "suffix=\"NCALIB\"\ndsorg=\"PO\"\nrecfm=\"U\"\n"
+            "lrecl=0\nblksize=32760\nspace=[\"TRK\",5,2,5]\n"
+            "[mvs.build.datasets.syslmod]\n"
+            "suffix=\"LOAD\"\ndsorg=\"PO\"\nrecfm=\"U\"\n"
+            "lrecl=0\nblksize=32760\nspace=[\"TRK\",5,2,5]\n"
+            "[dependencies]\n\"mvslovers/crent370\" = \">=1.0.0\"\n"
+            "[link.module]\n"
+            "name=\"MYAPP\"\noptions=[\"RENT\"]\n"
+        )
+        c = ProjectConfig.load(self._write(toml))
+        self.assertEqual(c.link_modules[0].max_rc, 0)
+
+    def test_max_rc_parsed(self):
+        toml = (
+            "[project]\nname=\"myapp\"\nversion=\"1.0.0\"\ntype=\"application\"\n"
+            "[mvs.build.datasets.ncalib]\n"
+            "suffix=\"NCALIB\"\ndsorg=\"PO\"\nrecfm=\"U\"\n"
+            "lrecl=0\nblksize=32760\nspace=[\"TRK\",5,2,5]\n"
+            "[mvs.build.datasets.syslmod]\n"
+            "suffix=\"LOAD\"\ndsorg=\"PO\"\nrecfm=\"U\"\n"
+            "lrecl=0\nblksize=32760\nspace=[\"TRK\",5,2,5]\n"
+            "[dependencies]\n\"mvslovers/crent370\" = \">=1.0.0\"\n"
+            "[link.module]\n"
+            "name=\"MYAPP\"\noptions=[\"RENT\"]\n"
+            "max_rc=4\n"
+        )
+        c = ProjectConfig.load(self._write(toml))
+        self.assertEqual(c.link_modules[0].max_rc, 4)
+
+
 if __name__ == "__main__":
     unittest.main()