fix(dl): filter CC subtitle languages with --s-lang and extract all manifest CCs

Fixes issues introduced in 15acaea where CC extraction only used the first manifest entry and ignored --s-lang filtering entirely. Now all CC languages from the HLS manifest are iterated and filtered against --s-lang using the same match logic as regular subtitle selection.

unshackle/commands/dl.py

@@ -62,7 +62,7 @@ from unshackle.core.tracks import Audio, Subtitle, Tracks, Video
 from unshackle.core.tracks.attachment import Attachment
 from unshackle.core.tracks.hybrid import Hybrid
 from unshackle.core.utilities import (find_font_with_fallbacks, get_debug_logger, get_system_fonts, init_debug_logger,
-                                      is_close_match, suggest_font_packages, time_elapsed_since)
+                                      is_close_match, is_exact_match, suggest_font_packages, time_elapsed_since)
 from unshackle.core.utils import tags
 from unshackle.core.utils.click_types import (AUDIO_CODEC_LIST, LANGUAGE_RANGE, QUALITY_LIST, SEASON_RANGE,
                                               ContextData, MultipleChoice, MultipleVideoCodecChoice,
@@ -1712,8 +1712,6 @@ class dl:
                             f"Required languages found ({', '.join(require_subs)}), downloading all available subtitles"
                         )
                     elif s_lang and "all" not in s_lang:
-                        from unshackle.core.utilities import is_exact_match
-
                         match_func = is_exact_match if exact_lang else is_close_match
 
                         missing_langs = [
@@ -2105,6 +2103,7 @@ class dl:
                     and not video_only
                     and not no_video
                 ):
+                    match_func = is_exact_match if exact_lang else is_close_match
                     for video_track_n, video_track in enumerate(title.tracks.videos):
                         has_manifest_cc = bool(getattr(video_track, "closed_captions", None))
                         has_eia_cc = (
@@ -2118,14 +2117,31 @@ class dl:
                         if not has_manifest_cc and not has_eia_cc:
                             continue
 
+                        # Build list of CC entries to extract
+                        if has_manifest_cc:
+                            cc_entries = video_track.closed_captions
+                            # Filter CC languages against --s-lang if specified
+                            if s_lang and "all" not in s_lang:
+                                cc_entries = [
+                                    entry for entry in cc_entries
+                                    if entry.get("language")
+                                    and match_func(Language.get(entry["language"]), s_lang)
+                                ]
+                                if not cc_entries:
+                                    continue
+                        else:
+                            # EIA fallback: single entry with unknown language
+                            cc_entries = [{}]
+
                         with console.status(f"Checking Video track {video_track_n + 1} for Closed Captions..."):
                             try:
+                                for cc_idx, cc_entry in enumerate(cc_entries):
                                     cc_lang = (
-                                    Language.get(video_track.closed_captions[0]["language"])
+                                        Language.get(cc_entry["language"])
-                                    if has_manifest_cc and video_track.closed_captions[0].get("language")
+                                        if cc_entry.get("language")
                                         else title.language or video_track.language
                                     )
-                                track_id = f"ccextractor-{video_track.id}"
+                                    track_id = f"ccextractor-{video_track.id}-{cc_idx}"
                                     cc = video_track.ccextractor(
                                         track_id=track_id,
                                         out_path=config.directories.temp
@@ -2137,7 +2153,7 @@ class dl:
                                         cc.cc = True
                                         title.tracks.add(cc)
                                         self.log.info(
-                                        f"Extracted a Closed Caption from Video track {video_track_n + 1}"
+                                            f"Extracted a Closed Caption ({cc_lang}) from Video track {video_track_n + 1}"
                                         )
                                     else:
                                         self.log.info(