Local project checks and contribution templates: make check, dependency-free C/python tests, issue forms + blank issues, CONTRIBUTING (#20)

* Add lightweight project checks and templates

* Ignore generated test binaries

* Keep project checks local

c/tests/test_benchmark_cuda_fixture.py

@@ -0,0 +1,24 @@
+import unittest
+
+from benchmark_cuda_fixture import parse_output
+
+
+SAMPLE = """
+REPLAY decode: 4 tokens | 12.34 tok/s
+PROFILO: expert-disk 1.25s | expert-matmul 2.50s | attention 0.75s | lm_head 0.10s | altro -0.05s
+"""
+
+
+class ParseOutputTest(unittest.TestCase):
+    def test_extracts_speed_and_profile(self):
+        speed, profile = parse_output(SAMPLE)
+        self.assertEqual(speed, 12.34)
+        self.assertEqual(profile, [1.25, 2.5, 0.75, 0.1, -0.05])
+
+    def test_rejects_incomplete_output(self):
+        with self.assertRaisesRegex(RuntimeError, "benchmark output missing"):
+            parse_output("REPLAY decode: 4 tokens | 12.34 tok/s", "engine failed")
+
+
+if __name__ == "__main__":
+    unittest.main()