refactor(console): route interactive prompts through a themed helper

Adds prompt_user() and uses it for local, remote, and Proton VPN input. Replaces click.prompt on the remote auth path, which ignored the theme and overlapped active Live displays. Remote auth now exits on EOF instead of POSTing an empty answer and spinning the poll loop.

docs/dev/creating-a-service.md

@@ -242,7 +242,7 @@ use `self.request_input(prompt)`, never a bare `input()`. Under `serve` mode
 there is no local terminal, so a bare `input()` would hang the server waiting on
 stdin that never arrives; `request_input` instead relays the prompt to the
 remote client through the attached `InputBridge`. Locally it routes through the
-shared Rich console (`console.input`) so the prompt renders correctly alongside
+shared Rich console (`prompt_user`) so the prompt renders correctly alongside
 progress and log output.
 
 !!! warning "Key token caches by whatever varies per session"

docs/dev/rest-api/remote-sessions.md

@@ -398,7 +398,8 @@ session API and a good template for any client.
 - **Retries.** The download-side HTTP session mounts an adapter with
   `Retry(total=5, backoff_factor=0.2, status_forcelist=[429, 500, 502, 503, 504])`.
 - **Flow.** `authenticate()` → `create` (+ poll `prompt` every 2s up to a 600s
-  deadline, answering `pending_input` prompts) → `get_titles()` → `get_tracks()`
+  deadline, answering `pending_input` prompts; with stdin closed the client logs an
+  error and raises `SystemExit(1)` instead of posting an empty answer) → `get_titles()` → `get_tracks()`
   (merging returned `session_headers`/`session_cookies`, re-parsing `manifests`) →
   license via proxy or `server_cdm` → `close()` (`DELETE`, saving any returned
   `cache`).

unshackle/core/console.py

@@ -427,4 +427,20 @@ console = ComfyConsole(
 )
 
 
-__all__ = ("ComfyLogRenderer", "ComfyRichHandler", "ComfyConsole", "GradientPulseBarColumn", "SyncLive", "console")
+def prompt_user(prompt: str) -> str:
+    """Ask the user for input on the shared console, themed and indented like the rest of the output."""
+    indent = " " * 5
+    body = Text(indent + prompt.rstrip("\n ").replace("\n", "\n" + indent), style="text")
+    body.append("\n" + indent + "> ", style="rule.text")
+    return console.input(body)
+
+
+__all__ = (
+    "ComfyLogRenderer",
+    "ComfyRichHandler",
+    "ComfyConsole",
+    "GradientPulseBarColumn",
+    "SyncLive",
+    "console",
+    "prompt_user",
+)

unshackle/core/proxies/proton.py

@@ -11,10 +11,9 @@ from pathlib import Path
 from typing import Optional
 
 import requests
-from rich.text import Text
 
 from unshackle.core.config import config
-from unshackle.core.console import console
+from unshackle.core.console import prompt_user
 from unshackle.core.proxies.proxy import Proxy
 
 log = logging.getLogger("proxies.proton")
@@ -326,13 +325,12 @@ class ProtonVPN(Proxy):
             log.error("Proton: unexpected TV login response")
             return False
 
-        indent = " " * 5
         prompt = (
             "Proton: open https://account.proton.me/vpn/tv/code\n"
             f"Enter code {user_code}, then press Enter to continue..."
         )
         try:
-            console.input(Text(indent + prompt.replace("\n", "\n" + indent), style="text"))
+            prompt_user(prompt)
         except EOFError:
             return False
 

unshackle/core/remote_service.py

@@ -22,7 +22,7 @@ from rich.padding import Padding
 from rich.rule import Rule
 
 from unshackle.core.config import config
-from unshackle.core.console import console
+from unshackle.core.console import console, prompt_user
 from unshackle.core.constants import AnyTrack
 from unshackle.core.credential import Credential
 from unshackle.core.titles import Title_T, Titles_T, remap_titles
@@ -616,7 +616,11 @@ class RemoteService:
 
             if status == "pending_input":
                 prompt = resp.get("prompt", "Enter input: ")
-                user_response = click.prompt(prompt.rstrip("\n "), default="", show_default=False)
+                try:
+                    user_response = prompt_user(prompt)
+                except EOFError:
+                    log.error("Remote auth needs interactive input but stdin is closed")
+                    raise SystemExit(1) from None
                 self.client.post(
                     f"/api/session/{self._session_id}/prompt",
                     {"response": user_response},

unshackle/core/service.py

@@ -16,11 +16,10 @@ import requests
 from requests.adapters import HTTPAdapter, Retry
 from rich.padding import Padding
 from rich.rule import Rule
-from rich.text import Text
 
 from unshackle.core.cacher import Cacher
 from unshackle.core.config import config
-from unshackle.core.console import console
+from unshackle.core.console import console, prompt_user
 from unshackle.core.constants import AnyTrack
 from unshackle.core.credential import Credential
 from unshackle.core.drm import DRM_T
@@ -369,9 +368,7 @@ class Service(metaclass=ABCMeta):
         """
         if self._input_bridge is not None:
             return self._input_bridge.request_input(prompt)
-        indent = " " * 5
-        padded = indent + prompt.replace("\n", "\n" + indent)
-        return console.input(Text(padded, style="text"))
+        return prompt_user(prompt)
 
     def search(self) -> Generator[SearchResult, None, None]:
         """