docs: document collab naming mismatch, cross-profile dedup gap, and VP9

Three findings from the 2026-09-01 collab-detection/VP9 investigation in Cosmo-Live-Downloads, all rooted in gallery-dl's own scraping output: - Collab posts' JSON is filed under the true owner's identity but the media file under the scraped account's — plus coauthors is a native, uncaptured signal that already excludes the owner for us. - The shared archive-db dedups by media_id across all profiles, not per profile, so a post reachable from two profiles' listings only gets its media written into whichever profile's crawl reached it first (510 such posts found archive-wide). - Some video_versions entries are VP9; format selection is codec-blind, and Safari's VP9 decode only wires into its WebM demuxer, never MP4. Also commits the two saved raw API response examples and the missing- captions CSV generated during that investigation.
2026-09-01 23:05:19 -04:00
parent 7638fa4a9a
commit d92fed1934
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+[
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+          "username": "0ct0ber19"
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+      "post_url": "https://www.instagram.com/reel/DcLDme7zoyo/",
+      "shortcode": "DcLDme7zoyo",
+      "subcategory": "reel",
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+          "id": "55465048543",
+          "username": "zindoriyam"
+        },
+        {
+          "full_name": "\uae40\ub9bd KIMLIP",
+          "id": "57506288936",
+          "username": "kimxxlip"
+        },
+        {
+          "full_name": "\ucd5c\ub9ac \ucd5c\uc608\ub9bc Choerry",
+          "id": "57668363710",
+          "username": "cher_ryppo"
+        },
+        {
+          "full_name": "HEEJIN",
+          "id": "57723176039",
+          "username": "0ct0ber19"
+        },
+        {
+          "full_name": "Official ARTMS",
+          "id": "58524253183",
+          "username": "official_artms"
+        }
+      ],
+      "tags": [
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+        "#BlueBloodNight",
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+        "#\uc81c\uc791\uc9c0\uc6d0"
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+]