Bump version to 0.2.0 and enhance documentation

- Updated version number in pyproject.toml and __init__.py to 0.2.0.
- Revised README.md to reflect the current state of the project, including usage instructions and setup steps.
- Improved CLI documentation in cli.md, adding details about new commands and their functionalities.
- Enhanced the quick start section in README.md for better clarity on initial setup.
- Updated local folder documentation to clarify file handling and commands.
- Added a new command for listing GPU flavors and improved error handling in the CLI.
- Implemented a watchdog feature in the tunnel to manage server states effectively.

tests/test_ux.py

@@ -0,0 +1,36 @@
+from gpu_rent.config import load_config
+from gpu_rent.inventory import FlavorInfo
+from gpu_rent.ux import cost_and_risk_lines, format_flavor_lines
+
+
+def test_format_flavor_lines_marks_pick():
+    ranked = [
+        FlavorInfo("a", "RTX 4090 24GB", 8, 32768, False, {}, "4090-24"),
+        FlavorInfo("b", "A5000", 8, 32768, False, {}, "a5000"),
+    ]
+    picked = ranked[0]
+    text = "\n".join(format_flavor_lines(ranked, picked))
+    assert "выберем" in text
+    assert "4090-24" in text
+
+
+def test_cost_lines_mention_disk_and_killer(monkeypatch, tmp_path):
+    monkeypatch.setenv("HOME", str(tmp_path))
+    monkeypatch.setenv("USERPROFILE", str(tmp_path))
+    monkeypatch.chdir(tmp_path)
+    for key in (
+        "OS_AUTH_URL",
+        "OS_USER_DOMAIN_NAME",
+        "OS_USERNAME",
+        "OS_PASSWORD",
+        "OS_PROJECT_ID",
+        "OS_REGION_NAME",
+        "GPU_RENT_AZ",
+    ):
+        monkeypatch.delenv(key, raising=False)
+    cfg = load_config(require_auth=False)
+    lines = cost_and_risk_lines(cfg, spot=True, flavor_name="GPU 4090")
+    blob = "\n".join(lines)
+    assert "24/7" in blob
+    assert "idle-killer" in blob
+    assert "панель" in blob.lower() or "Selectel" in blob