docs: reorganize and update TODOs

ythdd_inv_tl.py

@@ -17,21 +17,35 @@ import ythdd_api_v1
 import ythdd_extractor
 import ythdd_struct_parser
 
-# TODO:
+# TODOs:
+# ----------
+# DONE:
 # [✓] /api/v1/stats (stats())
 # [✓] /streams/dQw4w9WgXcQ (does nothing)
-# [✓] /vi/videoIdXXXX/maxresdefault.jpg (todo: add a fallback for 404s)
+# [✓] /vi/:videoIdXXXX/maxresdefault.jpg
 # [✓] /api/v1/search?q=... (videos and playlists)
 # [✓] /api/v1/search/suggestions?q=...&pq=...
 # [✓] /api/v1/channel/:ucid
 # [✓] /api/v1/channel/:ucid/videos, shorts, playlists, streams
 # [✓] /api/v1/comments/:videoid?continuation=...
-# [✓] /api/v1/videos/videoIdXXXX
+# [✓] /api/v1/videos/:videoIdXXXX
+# ----------
+# PLANNED:
 # [X] /api/v1/playlists/:plid
+# [X] /api/v1/:videoIdXXXX/maxres.jpg redirects to best quality thumbnail
 # [X] /api/v1/storyboards/:videoIdXXXX
-# [*] /api/v1/auth/subscriptions (stub? db?)
-# [*] /api/v1/auth/feed?page=1 (stub? db?)
-# [*] /api/v1/auth/playlists (stub? db?)
+# [X] /api/v1/videos/:videoIdXXXX does not depend on yt-dlp and offloads stream retrieval elsewhere (making initial response fast)
+# [X] /api/v1/manifest/:videoIdXXXX (above is prerequisite)
+# [X] rewrite the awful lookup logic
+# ----------
+# IDEAS:
+# [*] /api/v1/popular returns last requested videos by the IP (serving as multi-device history?)
+# [*] /api/v1/trending returns recently archived videos
+# ----------
+# NOT PLANNED/MAYBE IN THE FUTURE:
+# [ ] /api/v1/auth/subscriptions (stub? db?)
+# [ ] /api/v1/auth/feed?page=1 (stub? db?)
+# [ ] /api/v1/auth/playlists (stub? db?)
 
 DEFAULT_AVATAR = "https://yt3.ggpht.com/a/default-user=s176-c-k-c0x00ffffff-no-rj"
 DEFAULT_VIDEO  = "https://i.ytimg.com/img/no_thumbnail.jpg" # todo: replace this with a custom, local asset