0.3.2 — Full overlay UI on MC 26.1+

The merge UI is now available on every supported Minecraft version, including 26.1.x.

What changed

• MC 26.1+ overlay: per-replay checkboxes and the "Merge N Replays" button now appear in Flashback's Select Replay screen on MC 26.1, 26.1.1 and 26.1.2 — same UX as on 1.21.x. No more chat-only fallback.
• Dual UI source roots: the project now ships a src/main/java-classic (1.21.x: GuiGraphics, Screen.render, drawCenteredString) and a src/main/java-modern (26.1+: GuiGraphicsExtractor, extractRenderState, text(font, …)). Build pipeline selects the correct one automatically from the no_intermediate flag.
• Internals: button attachment on 26.1 uses reflection on Screen.addRenderableWidget (Fabric API removed Screens.getButtons). Mouse-click handling uses the new MouseButtonEvent record.

Backport / migration notes

Nothing for users — drop in the new jar and the merge UI lights up.

For developers: a new MC release can be supported by either patching the matching java-classic/java-modern folder, or adding a third root if the rendering API shifts again.

Full 0.3.1 → 0.3.2 changes

Only the UI subsystem; merge core, security guards, CI workflow disable, and all 16 audit fixes from 0.3.1 are unchanged.