release: 0.78.2 — HW HDR→SDR tonemap for 10-bit/HDR Plex transcode

VERSION

@@ -1 +1 @@
-0.78.1
+0.78.2

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,21 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.78.2",
+    date: "2026-08-30",
+    summary:
+      "HDR and 10-bit videos in the Plex player now transcode on the server GPU instead of falling back to the CPU. HDR is tone-mapped to SDR on the GPU so the picture looks right in the browser, at a fraction of the CPU cost.",
+    features: [
+      "A 10-bit / HDR video (HDR10, HLG — common on 4K and modern HEVC files) that needs transcoding now runs on the Intel GPU, tone-mapping HDR→SDR on-device so colours look right in the browser and the CPU is barely touched. Previously these fell back to a heavy software encode; now the GPU does the work. If the GPU path can't start for any reason, playback still falls back to software automatically, so a video never fails to play.",
+    ],
+    fixes: [
+      "A 10-bit video that is NOT HDR (standard-range 10-bit, common in anime and some HEVC encodes) is no longer run through the HDR tone-curve — it gets a plain down-convert, so its colours are preserved exactly instead of being subtly darkened.",
+    ],
+    chores: [
+      "The transcode pipeline now decides hardware vs software (and HDR tone-mapping) from a real probe of the source, and the GPU HDR path uses the Intel OpenCL runtime baked into the image. The whole change went through several multi-agent deep-review rounds — including an adversarially-verified fix to a start/seek race in the session fallback — re-reviewed until a round came back clean.",
+    ],
+  },
   {
     version: "0.78.1",
     date: "2026-08-30",