chore(release): 1.2.0

Minor: the completion, hint and match-submission contracts change shape, and
a new hint endpoint is added. Old clients are rejected loudly rather than
silently mis-scored.

CHANGELOG.md

@@ -9,6 +9,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.2.0] - 2026-09-09
+
+### Changed
+
+- Game completion, hints and all versus submissions follow the server's
+  authoritative scoring contract: completion posts no payload, hints go through
+  the server (which also records them), and match submissions send a session id
+  rather than a score.
+
+### Fixed
+
+- Stale hints are cleared when the chain changes; the previous movie's cast
+  used to stay on screen after picking an actor another way.
+
 ## [1.1.0] - 2026-09-09
 
 ### Fixed

package.json

@@ -1,7 +1,7 @@
 {
   "name": "frontend-temp",
   "private": true,
-  "version": "1.1.0",
+  "version": "1.2.0",
   "type": "module",
   "license": "MIT",
   "author": "Kevin Riehl",