Simplify TODO.md to a single flat list

TODO.md

@@ -1,6 +1,5 @@
 # VibeLine TODO List
 
-## Completed Tasks
 - [x] Set up basic project structure
 - [x] Create voice memo processing system
 - [x] Implement dynamic plugin loading system
@@ -11,35 +10,10 @@
 - [x] Implement file organization system
 - [x] Add timestamp-based file naming
 - [x] Make scripts executable
-
-## Pending Tasks
-
-### High Priority
 - [ ] Extract llama models to ENV variables
-  - Move model names to environment variables
-  - Add .env.example file
-  - Update documentation
-
 - [ ] Create action_items plugin
-  - Create new plugin for extracting action items
-  - Update content type detection
-  - Add appropriate directory structure
-
-### Documentation
-- [ ] Write README.md
-  - Project overview
-  - Installation instructions
-  - Usage examples
-  - Plugin system documentation
-  - Directory structure explanation
-
-### Legal
-- [ ] Create LICENSE
-  - Choose appropriate license (MIT recommended for open source)
-  - Add copyright notice
-  - Include license text
-
-### Future Enhancements
+- [ ] Write README.md with project overview, installation instructions, usage examples, plugin system documentation, and directory structure explanation
+- [ ] Create LICENSE (MIT recommended)
 - [ ] Add error handling for Ollama connection issues
 - [ ] Implement plugin validation system
 - [ ] Add support for custom output formats