fix: repair case-sensitive README links

README.md

@@ -32,7 +32,7 @@ ecosystem-stage: "operational"
 [![SLSA L1 honest · L2 build-attested · L3 roadmap](https://img.shields.io/badge/SLSA-L1%20honest%20%C2%B7%20L2%20build--attested%20%C2%B7%20L3%20roadmap-c9b787?style=flat-square)](https://github.com/szl-holdings/killinchu)
 [![doctrine-v11](https://img.shields.io/badge/doctrine-v11%20LOCKED-0B1F3A?style=flat-square)](https://github.com/szl-holdings/.github/tree/main/doctrine)
 [![CI](https://github.com/szl-holdings/killinchu/actions/workflows/ci.yml/badge.svg)](https://github.com/szl-holdings/killinchu/actions)
-[![License](https://img.shields.io/badge/license-Apache--2.0-5fb3a3?style=flat-square)](LICENSE)
+[![License](https://img.shields.io/badge/license-Apache--2.0-5fb3a3?style=flat-square)](https://www.apache.org/licenses/LICENSE-2.0)
 [![Λ Conjecture 1](https://img.shields.io/badge/%CE%9B-Conjecture%201%20(conditional%20Theorem%20U)-B79BD6?style=flat-square)](https://github.com/szl-holdings/lutar-lean/blob/main/BOUNTY.md)
 [![Khipu Conjecture 2](https://img.shields.io/badge/Khipu%20BFT-Conjecture%202%20(Wave23%20conditional)-B79BD6?style=flat-square)](https://github.com/szl-holdings/khipu-consensus)
 
@@ -203,7 +203,7 @@ graph TD
 ```
 
 Full layout, the `register()` pattern, and the doctrine CI hard-gates →
-[`docs/architecture.md`](docs/architecture.md).
+[`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md).
 
 ---
 
@@ -214,7 +214,7 @@ route assembly). The table below is a **logical** "where things live" guide; the
 listed already exist and run live. A user-visible surface is a self-contained module that
 exposes `register(app, ns="killinchu")` and is registered **before** the SPA catch-all
 (FastAPI matches routes in declaration order). Full table in
-[`docs/architecture.md`](docs/architecture.md).
+[`docs/ARCHITECTURE.md`](docs/ARCHITECTURE.md).
 
 | Layer | Role | Representative modules |
 |---|---|---|

tests/test_readme_link_contract.py

@@ -0,0 +1,30 @@
+from pathlib import Path
+import re
+import subprocess
+import unittest
+from urllib.parse import unquote
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+class ReadmeLinkContractTests(unittest.TestCase):
+    def test_relative_readme_links_match_tracked_paths_exactly(self):
+        readme = (ROOT / "README.md").read_text(encoding="utf-8")
+        tracked = set(
+            subprocess.check_output(["git", "ls-files"], cwd=ROOT, text=True).splitlines()
+        )
+        missing = []
+        for raw in re.findall(r"\]\(([^)]+)\)", readme):
+            target = raw.strip().split()[0].strip("<>")
+            if not target or target.startswith(("#", "http:", "https:", "mailto:")):
+                continue
+            path = unquote(target.split("#", 1)[0]).replace("\\", "/")
+            if path and path not in tracked:
+                missing.append(path)
+
+        self.assertEqual(missing, [])
+
+
+if __name__ == "__main__":
+    unittest.main()