feat: carry the SponsorBlock toggle into subscriptions

Subscriptions download unattended, which is where skipping sponsor reads
is most useful, so the flag now travels the same path the other download
options take: stored on SubscriptionInfo, persisted in the record, and
passed to add_entry for every entry a check queues.

Like the clip bounds, it is set when the subscription is created; the
update endpoint's field list is unchanged.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app/subscriptions.py

@@ -182,6 +182,7 @@ class SubscriptionInfo:
     auto_start: bool = True
     playlist_item_limit: int = 0
     split_by_chapters: bool = False
+    sponsorblock: bool = False
     chapter_template: str = ""
     subtitle_language: str = "en"
     subtitle_mode: str = "prefer_manual"
@@ -242,6 +243,7 @@ def _subscription_to_record(sub: SubscriptionInfo) -> dict[str, Any]:
         "auto_start": sub.auto_start,
         "playlist_item_limit": sub.playlist_item_limit,
         "split_by_chapters": sub.split_by_chapters,
+        "sponsorblock": sub.sponsorblock,
         "chapter_template": sub.chapter_template,
         "subtitle_language": sub.subtitle_language,
         "subtitle_mode": sub.subtitle_mode,
@@ -487,6 +489,7 @@ class SubscriptionManager:
         ytdl_options_overrides: Optional[dict[str, Any]] = None,
         clip_start: Optional[float] = None,
         clip_end: Optional[float] = None,
+        sponsorblock: bool = False,
     ) -> tuple[list[str], list[str]]:
         queued_ids: list[str] = []
         queue_errors: list[str] = []
@@ -519,6 +522,7 @@ class SubscriptionManager:
                 ytdl_options_overrides,
                 clip_start,
                 clip_end,
+                sponsorblock=sponsorblock,
             )
             if isinstance(result, dict) and result.get("status") == "error":
                 msg = str(result.get("msg") or f"Queueing failed for {vurl}")
@@ -606,6 +610,7 @@ class SubscriptionManager:
         subtitle_mode: str,
         ytdl_options_presets: Optional[list[str]] = None,
         ytdl_options_overrides: Optional[dict[str, Any]] = None,
+        sponsorblock: bool = False,
         title_regex: Any = None,
         skip_subscriber_only: Any = None,
         clip_start: Optional[float] = None,
@@ -689,6 +694,7 @@ class SubscriptionManager:
                 auto_start=bool(auto_start),
                 playlist_item_limit=int(playlist_item_limit),
                 split_by_chapters=bool(split_by_chapters),
+                sponsorblock=bool(sponsorblock),
                 chapter_template=chapter_template or "",
                 subtitle_language=subtitle_language,
                 subtitle_mode=subtitle_mode,
@@ -942,6 +948,7 @@ class SubscriptionManager:
             dl_plimit = cur.playlist_item_limit
             dl_autostart = cur.auto_start
             dl_split = cur.split_by_chapters
+            dl_sponsorblock = cur.sponsorblock
             dl_chapter = cur.chapter_template
             dl_sublang = cur.subtitle_language
             dl_submode = cur.subtitle_mode
@@ -1010,6 +1017,7 @@ class SubscriptionManager:
             playlist_item_limit=dl_plimit,
             auto_start=dl_autostart,
             split_by_chapters=dl_split,
+            sponsorblock=dl_sponsorblock,
             chapter_template=dl_chapter or "",
             subtitle_language=dl_sublang,
             subtitle_mode=dl_submode,