Remnant Classmod Addition and Integration

• Add the entire Remnant classmod into a new, separate sheet tab so no existing data or formulas are overwritten.
• Follow the formatting conventions already used in other classmod tabs (fonts, borders, color coding, layout).
• Create unique named ranges for all Remnant values, features, and scaling tables to avoid conflicts with existing classes.
• Do not modify or delete any existing formulas, scripts, triggers, or backend tabs unless explicitly told to.
• Keep all new formulas isolated to the Remnant tab or a dedicated backend tab; avoid embedding new logic into core sheets.
• Link Remnant data to the main character sheet using pull formulas (e.g., VLOOKUP, INDEX/MATCH) instead of altering core logic.
• Ensure Remnant integrates cleanly with leveling, chakra scaling, DC calculations, class features, and any automation already in place.
• Add any Remnant‑specific resources (e.g., Remnant Points, Agony/Resonance meters) as new fields with unique identifiers.
• Make sure new mechanics do not override or interfere with other class triggers or multiclassing logic.
• Test for circular references, broken links, overwritten ranges, or disrupted dropdowns/validation rules.
• Document all new tabs, named ranges, formulas, and any script additions so future maintainers understand the structure.
• Provide a short summary of what was added and keep a backup copy of the sheet before integration for rollback safety.