Refactor CLI and LLM runtime handling for improved user experience

- Removed deprecated console usage in favor of structured logging functions for error handling and user prompts.
- Enhanced CLI prompts for LLM runtime and preset selection, utilizing menu helpers for better user interaction.
- Updated GPU pool scanning output with improved formatting and error indication for clarity.
- Refactored setup wizard to streamline LLM runtime and preset configuration, ensuring a more intuitive setup process.
- Improved documentation and user feedback in CLI outputs to enhance overall usability.

src/gpu_rent/ux.py

@@ -6,6 +6,8 @@ from collections.abc import Callable
 from dataclasses import dataclass
 from typing import Any
 
+from rich.markup import escape
+
 from gpu_rent.config import Config
 from gpu_rent.inventory import FlavorInfo, looks_like_gpu, rank_flavors, resolve_flavor
 
@@ -21,14 +23,19 @@ def list_ranked_flavors(flavors: list[Any], cfg: Config) -> list[FlavorInfo]:
 
 def format_flavor_lines(ranked: list[FlavorInfo], picked: FlavorInfo | None = None) -> list[str]:
     if not ranked:
-        return ["flavors: пусто (проверь регион / FLAVOR_PREFERENCE)"]
-    lines = ["flavors (по FLAVOR_PREFERENCE):"]
+        return ["[yellow]flavors: пусто (проверь регион / FLAVOR_PREFERENCE)[/yellow]"]
+    lines = ["[bold cyan]flavors (по FLAVOR_PREFERENCE):[/bold cyan]"]
     for i, info in enumerate(ranked, 1):
-        mark = " ← выберем" if picked and info.id == picked.id else ""
+        mark = " [green]← выберем[/green]" if picked and info.id == picked.id else ""
         ram = f"{info.ram_mb // 1024}GB" if info.ram_mb else "?"
         vcpu = str(info.vcpus) if info.vcpus is not None else "?"
-        label = info.label or "—"
-        lines.append(f"  {i}. [{label}] {info.name}  vCPU={vcpu} RAM={ram}  id={info.id}{mark}")
+        label = escape(info.label or "—")
+        name = escape(info.name)
+        fid = escape(info.id)
+        lines.append(
+            f"  [cyan]{i}.[/cyan] [bold]{label}[/bold] {name}  "
+            f"vCPU={vcpu} RAM={ram}  id={fid}{mark}"
+        )
     return lines
 
 
@@ -114,21 +121,18 @@ def prompt_server_plan(
     if data_gb < 20:
         raise ValueError("Data disk GB: минимум 20")
 
-    spot_default = "Y" if spot else "n"
-    raw_spot = (
-        ask(
-            "Preemptible GPU (дешевле, могут усыпить ~24ч)? [Y/n]",
-            spot_default,
-        )
-        .strip()
-        .lower()
+    from gpu_rent.prompts import MenuItem, prompt_menu
+
+    spot_key = prompt_menu(
+        "Тариф GPU",
+        [
+            MenuItem("yes", "preemptible (дешевле, могут усыпить ~24ч)"),
+            MenuItem("no", "обычный on-demand"),
+        ],
+        default="yes" if spot else "no",
+        ask=ask,
     )
-    if raw_spot in {"", "y", "yes", "1", "true", "on"}:
-        use_spot = True
-    elif raw_spot in {"n", "no", "0", "false", "off"}:
-        use_spot = False
-    else:
-        raise ValueError(f"preemptible: жду Y/n, получили {raw_spot!r}")
+    use_spot = spot_key == "yes"
 
     changed = (
         chosen.id != picked.id