docs: update changelog [skip ci]

docs/changelog/index.md

@@ -20,6 +20,21 @@ Notable changes to the guide and its tooling. Follows [Keep a Changelog](https:/
 
 ---
 
+## [v2026.5.25]
+
+!!! Note "Meta"
+
+    - Released 2026-05-24 from [`ccc9746`](https://github.com/Anon-Planet/thgtoa/commit/ccc97461c94f5898dc44ca015dc8121640837a00)
+
+!!! Note "Added"
+
+    - Explain missing v1.2.2 tag
+
+!!! Note "Fixed"
+
+    - Prevent history dump and filter noise commits
+    - Actually save per-page PDFs for qpdf, not PNGs
+
 ## [v1.2.4]
 
 !!! Note "Meta"