update changelog and todo

Signed-off-by: Vladimir Mandic <mandic00@live.com>

CHANGELOG.md

@@ -6,6 +6,7 @@
   - Add **FLUX.1-Kontext-Dev** inpaint workflow  
 - **UI**  
   - major update to modernui layout  
+  - redesign of the Flat UI theme
 - **Compute**
   - support for [SageAttention2++](https://github.com/thu-ml/SageAttention)  
     provides 10-15% performance improvement over default SDPA for transformer-based models!  
@@ -23,6 +24,7 @@
   - patch `insightface`  
   - patch `k-diffusion`  
   - cleanup `/modules`: move pipeline loaders to `/pipelines` root  
+  - cleanup `/modules`: move code folders used by pipelines to `/pipelines/<pipeline>` folder  
   - cleanup `/modules`: move code folders used by scripts to `/scripts/<script>` folder  
   - cleanup `/modules`: global rename `modules.scripts` to avoid conflict with `/scripts`  
   - stronger lint rules  

TODO.md

@@ -6,11 +6,10 @@ Main ToDo list can be found at [GitHub projects](https://github.com/users/vladma
 
 ## Future Candidates
 
-- Refactor: Move `model_*` stuff into subfolder  
-- Refactor: sampler options  
 - Feature: Common repo for `T5` and `CLiP`  
 - Feature: LoRA add OMI format support for SD35/FLUX.1  
 - Feature: Merge FramePack into core  
+- Refactor: sampler options  
 - Remove: legacy LoRA loader
 - Remove: Original backend
 - Remove: Agent Scheduler