feat: add install script packaging

tests/unit/test_install_script.py

@@ -0,0 +1,34 @@
+"""Unit: install.sh static contract checks."""
+
+from __future__ import annotations
+
+import subprocess
+import unittest
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+class TestInstallScript(unittest.TestCase):
+    def test_shell_syntax(self):
+        result = subprocess.run(
+            ["sh", "-n", str(ROOT / "install.sh")],
+            check=False,
+            capture_output=True,
+            text=True,
+        )
+        self.assertEqual("", result.stderr)
+        self.assertEqual(0, result.returncode)
+
+    def test_contract_phrases(self):
+        script = (ROOT / "install.sh").read_text(encoding="utf-8")
+        self.assertIn("python3", script)
+        self.assertIn("docker info", script)
+        self.assertIn("pipx install --force", script)
+        self.assertIn("pip install --user --upgrade", script)
+        self.assertIn('"${BOT_BOTTLE_BIN}" doctor', script)
+
+
+if __name__ == "__main__":
+    unittest.main()