refactor(proprietary): move scrapers/ -> platforms/ (one subpackage per platform)

surfsense_backend/app/proprietary/platforms/__init__.py

@@ -1,7 +1,6 @@
-"""Platform-specific crawl/extraction actors (non-Apache-2; see ../LICENSE).
+"""Platform-native crawl/extraction actors (non-Apache-2; see ../LICENSE).
 
-Scaffolded for future work (Phase 8 — Platform Actors). Each platform (e.g.
-maps, professional networks) will get its own subpackage that reuses the shared
-fetch strategies in ``app.proprietary.web_crawler`` under a platform-specific
-structured extractor. Empty for now by design.
+One subpackage per platform (e.g. ``youtube``), each a structured extractor for
+that platform's data. Actors may reuse the shared fetch strategies in
+``app.proprietary.web_crawler`` but expose their own platform-specific I/O.
 """

surfsense_backend/app/proprietary/platforms/youtube/README.md

@@ -13,7 +13,7 @@ No API keys, no Apify account, no headless browser on the happy path.
 ## Quick start
 
 ```python
-from app.proprietary.scrapers.youtube import (
+from app.proprietary.platforms.youtube import (
     YouTubeScrapeInput, scrape_youtube,
     YouTubeCommentsInput, scrape_comments,
 )

surfsense_backend/app/proprietary/platforms/youtube/comments.py

@@ -27,8 +27,8 @@ from .parsers import (
     parse_count,
     parse_video_page,
 )
-from .scraper import _post, _published_date, fan_out
 from .schemas import CommentItem, YouTubeCommentsInput
+from .scraper import _post, _published_date, fan_out
 from .url_resolver import resolve_url
 
 logger = logging.getLogger(__name__)

surfsense_backend/app/proprietary/scrapers/__init__.py

@@ -1 +0,0 @@
-"""Platform-native scrapers (non-connector data extraction tools)."""