feat: enhance filament management and UI improvements

- Update SpoolPresetRepository to include user_id in the update query.
- Expand .gitignore to include various environment and temporary files.
- Revise agent documentation for better clarity and formatting.
- Implement pull-to-refresh functionality in the inventory list.
- Integrate API calls for deleting and updating filaments, ensuring state synchronization.
- Add custom color picker for filament color selection with hex validation.
- Update AndroidManifest and Gradle files for improved configuration and permissions.
- Refactor MainActivity and MainApplication for better splash screen handling.
- Update styles and colors for a cohesive UI experience.
- Replace splash screen logos and icons with new assets.

backend/migrations/20240101000002_create_spool_presets.sql

@@ -21,7 +21,7 @@ CREATE INDEX idx_spool_presets_is_system ON spool_presets (is_system);
 -- Presets built-in do sistema (somente leitura para usuários)
 INSERT INTO spool_presets (name, spool_weight_g, is_system) VALUES
     ('Bambu Lab (Plástico)',   250, TRUE),
-    ('Elegoo (Papelão)',       200, TRUE),
+    ('Elegoo (Papelão)',       156, TRUE),
     ('Creality (Plástico)',    230, TRUE),
     ('Prusament (Plástico)',   201, TRUE),
     ('Sunlu (Papelão)',        200, TRUE),