Release 3.1.2: CHANGELOG, README, version bump

Cherry-picks the split-scene regression fix (9a50f0a) onto main and
bumps the version for the Comfy Registry release.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,16 @@
 
 ## [Unreleased]
 
+## [3.1.2] - 2026-06-28
+
+### Fixed
+- **Cutting Room: splitting a clip could undo itself.** An async probe that adopts a render's
+  real encoded file duration could resolve *after* a split and silently rewrite the first half's
+  length back to the full original — pushing the second half later, which looked like "a
+  full-length scene got appended to the end of the timeline" instead of an in-place split. The
+  probe now carries an edit token that the split bumps, so a stale probe result is discarded
+  instead of overwriting a fresh split.
+
 ## [3.1.1] - 2026-06-26
 
 ### Added

README.md

@@ -29,6 +29,10 @@ cross-shot **JoyAI-Echo** audio/video memory mode, contrastive-pair **FreeSlider
 seed-routing **path-outcome planner** that steers future generations away from disliked paths —
 see the [CHANGELOG](CHANGELOG.md) for the full list.
 
+**3.1.2** fixes a Cutting Room regression where splitting a clip could undo itself (the second
+half got pushed out as if a full-length clip had been appended) — see the
+[CHANGELOG](CHANGELOG.md).
+
 See [`docs/MovieEditor.md`](docs/MovieEditor.md) for complete Cutting Room documentation.
 
 ## Installation

pyproject.toml

@@ -2,7 +2,7 @@
 [project]
 name = "ComfyUI-FunPack" # Unique identifier for your node. Immutable after creation.
 description = "A set of nodes for experiments with video generation models, including prompt refinement, adaptive LoRA weight workflows, story tools, video stitching, lorebook enhancement and more."
-version = "3.1.1" # Custom Node version. Must be semantically versioned.
+version = "3.1.2" # Custom Node version. Must be semantically versioned.
 license = { text = "GNU GPL v3" }
 dependencies  = [] # Filled in from requirements.txt