refactor: convert project from bash to Python

Replaces cli.sh + lib/*.sh with a claude_bottle/ Python package and a
cli.py entry point. No external dependencies — uses only Python's
stdlib (json, subprocess, getpass, tempfile, argparse, re, etc.).

- claude_bottle/{log,docker,manifest,env_resolve,network,pipelock,
  skills,ssh,cli}.py mirror the previous lib/*.sh modules.
- Tests converted to unittest under tests/test_*.py with a stdlib
  runner at tests/run_tests.py (unit | integration | path).
- .githooks/commit-msg ported to Python; same Conventional Commits rules.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_pipelock_naming.py

@@ -0,0 +1,33 @@
+"""Unit: pipelock naming helpers (container_name, proxy_url, proxy_host_port)."""
+
+import unittest
+
+from claude_bottle.pipelock import (
+    pipelock_container_name,
+    pipelock_proxy_host_port,
+    pipelock_proxy_url,
+)
+
+
+class TestPipelockNaming(unittest.TestCase):
+    def test_container_name_simple(self):
+        self.assertEqual("claude-bottle-pipelock-foo", pipelock_container_name("foo"))
+
+    def test_container_name_with_hyphens(self):
+        self.assertEqual(
+            "claude-bottle-pipelock-some-slug", pipelock_container_name("some-slug")
+        )
+
+    def test_proxy_url_default_port(self):
+        self.assertEqual(
+            "http://claude-bottle-pipelock-foo:8888", pipelock_proxy_url("foo")
+        )
+
+    def test_proxy_host_port_default_port(self):
+        self.assertEqual(
+            "claude-bottle-pipelock-foo:8888", pipelock_proxy_host_port("foo")
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()