feat(remote): unify remote execution workflow with env-based config

- Replace hardcoded SSH/docker targets with environment variables
- Add remote-check, remote-dry, remote-test, remote-test-one recipes
- Add remote cmd for arbitrary command execution in docker container

.safety-net.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "https://raw.githubusercontent.com/kenryu42/claude-code-safety-net/main/assets/cc-safety-net.schema.json",
+  "version": 1,
+  "rules": [
+    {
+      "name": "block-uv-run",
+      "command": "uv",
+      "subcommand": "run",
+      "block_args": [
+        "python",
+        "python3",
+        "pytest",
+        "pip",
+        "-m",
+        "--module",
+        "--help",
+        "--version",
+        "-h",
+        "-v"
+      ],
+      "reason": "uv run is blocked in this project. Use direct command execution instead."
+    }
+  ]
+}