Complete 26.3 parity acceptance and dual-version release workflow

docs/MINECRAFT_26_3_PORT.md

@@ -8,6 +8,18 @@ The user wants both Minecraft lines maintained after the port, not a one-time
 26.3 release. Gitea milestone "Dual-version support: 1.21.1 and 26.3"
 tracks issues #97–#103 under parent #96.
 
+## Final port acceptance — 2026-11-14
+
+The 26.3 port is playable on the regular release channel. The complete writing,
+generation, instability, travel, discovery and presentation review is in
+[MC263_PARITY_REVIEW.md](MC263_PARITY_REVIEW.md). #100 is complete: the
+expanded-catalog two-client checks and the player-operated full-restart return
+handoff passed. The look-only book-window overlay and its right-click exit fix
+also passed on 26.3.0.3. #103/#104 closure follows the workflow/release audit.
+The original introductory audit and slice entries below are historical, not a
+list of currently missing features. 1.21.1 remains maintained independently.
+Known issues and shared enhancements remain tracked separately.
+
 ## Published status — 2026-11-11
 
 [26.3.0.1](../ports/mc263/RELEASE_NOTES_26.3.0.1.md) collects the player-validated