Add TMI EP and COD EP columns to stat weights for tank specs

[veev-code]

Add TMI EP and COD EP columns to stat weights for tank specs

This PR adds TMI EP (Theck-Meloree Index) and COD EP (Chance of Death) columns to the stat weights UI for tank specs, similar to how DTPS EP is currently displayed and used.

Changes

1. Removed the "experimental" class from TMI and COD EP columns to make them visible by default
2. Updated the CSS to handle the columns being shown by default
3. Updated the default epRatios for tank specs to include TMI and COD EP ratios (set to 0 by default)
4. Made the EP reference options row visible by default

Benefits

These changes allow tank players to evaluate their gear based on different survivability metrics beyond just DTPS. While the default ratios are set to 0 (meaning they don't affect calculations by default), users can manually adjust these ratios if they want to include TMI and COD in their stat weight calculations.

Note

This change was generated with the assistance of Cursor AI and may require further review to ensure it meets code quality standards and correctly implements the desired functionality.