Merge branch 'main' into feature/e22-activity-trail

frontend/src/i18n/locales/en/downloads.json

@@ -304,6 +304,20 @@
             "short": "No video found in this post",
             "body": "We couldn't find a single downloadable video in this group post. If it does have one, open the video on Facebook and paste its link."
           }
+        },
+        "youtube": {
+          "bot_wall": {
+            "short": "YouTube sign-in required",
+            "body": "YouTube only serves this video to a signed-in viewer — it asks the downloader to confirm it isn't a bot. Other YouTube videos are usually unaffected. Add your YouTube cookies under Settings → Account → Download authentication, then retry the download from the list."
+          },
+          "cookie_rejected": {
+            "short": "YouTube didn't accept the cookies",
+            "body": "YouTube rotates exported cookies as a security measure, so yours have probably expired. Export them again from a private browsing window, close that window without browsing on, paste them in under Settings → Account → Download authentication, then retry the download from the list."
+          },
+          "media_forbidden": {
+            "short": "YouTube refused the video stream",
+            "body": "YouTube found the video but refused to send the file to a signed-out download. It comes and goes, so a retry from the list is worth one try — and adding your YouTube cookies under Settings → Account → Download authentication is what gets a stubborn one through."
+          }
         }
       }
     },

frontend/src/i18n/locales/hu/downloads.json

@@ -304,6 +304,20 @@
             "short": "Ebben a posztban nem található videó",
             "body": "Nem találtunk egyértelműen letölthető videót ebben a csoportposztban. Ha mégis van benne, nyisd meg a videót a Facebookon, és annak a linkjét másold be."
           }
+        },
+        "youtube": {
+          "bot_wall": {
+            "short": "YouTube-bejelentkezés szükséges",
+            "body": "A YouTube ezt a videót csak bejelentkezett nézőnek adja ki — a letöltőprogramtól azt kéri, igazolja, hogy nem robot. A többi YouTube-videót ez általában nem érinti. Illeszd be a YouTube-cookie-kat a Beállítások → Fiók → Letöltés-hitelesítés alatt, majd a listában indítsd újra a letöltést."
+          },
+          "cookie_rejected": {
+            "short": "A YouTube nem fogadta el a cookie-kat",
+            "body": "A YouTube biztonsági okból lecseréli az exportált cookie-kat, ezért a tiéid valószínűleg lejártak. Exportáld őket újra egy privát böngészőablakból, majd zárd be azt az ablakot további böngészés nélkül, illeszd be a Beállítások → Fiók → Letöltés-hitelesítés alatt, majd a listában indítsd újra a letöltést."
+          },
+          "media_forbidden": {
+            "short": "A YouTube nem adta ki a videófájlt",
+            "body": "A YouTube visszaadta a videó adatait, de a fájlt már nem adta ki bejelentkezés nélkül. Ez hol van, hol nincs, ezért érdemes újrapróbálni a listából — a makacs eseteken pedig a YouTube-cookie-k segítenek, a Beállítások → Fiók → Letöltés-hitelesítés alatt."
+          }
         }
       }
     },

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,22 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.87.1",
+    date: "2026-09-16",
+    summary:
+      "A YouTube video that YouTube will only show to a signed-in viewer can now be downloaded: paste your YouTube cookies in Settings the way the failure message already told you to — until now that list had no YouTube in it.",
+    features: [
+      "YouTube joins the sites you can store download cookies for (Settings → Account → Download authentication). A signed-in YouTube download automatically uses the players that accept your login.",
+    ],
+    fixes: [
+      "A YouTube download that stops at “Sign in to confirm you’re not a bot” says so in your language and points at a setting that now exists. If you had already added cookies, it tells you they were refused instead of asking for them again.",
+      "A video YouTube describes but then refuses to hand over is tried again with another player instead of failing at once, and it is no longer called a network error — nothing was wrong with the network.",
+    ],
+    chores: [
+      "The gated video was measured end to end on an isolated stack before and after the fix: every player client, two yt-dlp versions, and finally the real download (519 MB) with cookies attached. One deep-review round — 25 findings raised, none survived adversarial verification, and the one real defect came out of the verification itself: a comment of mine named an error yt-dlp does not raise there. Running it settled what reading it could not.",
+    ],
+  },
   {
     version: "0.87.0",
     date: "2026-09-15",