fix: resolve 15 bugs and gaps in video scraper pipeline

- Fix extract_visual_data returning 2-tuple instead of 3 (ValueError crash)
- Move pytesseract from core deps to [video-full] optional group
- Add 30-min timeout + user feedback to video enhancement subprocess
- Add scrape_video_impl to MCP server fallback import block
- Detect auto-generated YouTube captions via is_generated property
- Forward --vision-ocr and --video-playlist through create command
- Fix filename collision for non-ASCII video titles (fallback to video_id)
- Make _vision_used a proper dataclass field on FrameSubSection
- Expose 6 visual params in MCP scrape_video tool
- Add install instructions on missing video deps in unified scraper
- Update MCP docstring tool counts (25→33, 7 categories)
- Add video and word commands to main.py docstring
- Document video-full exclusion from [all] deps in pyproject.toml
- Update parser registry test count (22→23 for video parser)

All 2437 tests passing, 0 failures.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/skill_seekers/cli/create_command.py

@@ -360,8 +360,12 @@ class CreateCommand:
 
         # Add video source (URL or file)
         parsed = self.source_info.parsed
+        video_playlist = getattr(self.args, "video_playlist", None)
         if parsed.get("source_kind") == "file":
             argv.extend(["--video-file", parsed["file_path"]])
+        elif video_playlist:
+            # Explicit --video-playlist flag takes precedence
+            argv.extend(["--playlist", video_playlist])
         elif parsed.get("url"):
             url = parsed["url"]
             # Detect playlist vs single video
@@ -374,11 +378,15 @@ class CreateCommand:
         self._add_common_args(argv)
 
         # Add video-specific arguments
-        video_langs = getattr(self.args, "video_languages", None) or getattr(self.args, "languages", None)
+        video_langs = getattr(self.args, "video_languages", None) or getattr(
+            self.args, "languages", None
+        )
         if video_langs:
             argv.extend(["--languages", video_langs])
         if getattr(self.args, "visual", False):
             argv.append("--visual")
+        if getattr(self.args, "vision_ocr", False):
+            argv.append("--vision-ocr")
         if getattr(self.args, "whisper_model", None) and self.args.whisper_model != "base":
             argv.extend(["--whisper-model", self.args.whisper_model])
         vi = getattr(self.args, "visual_interval", None)