fix: complete Spanish-to-English translation for RoadmapTab
Added missing translation keys for visible UI elements:
- Investment Scenarios section (title, subtitle, tooltip)
- Table headers (Scenario, Investment, Recurring, Savings, Margin, Payback, ROI, Risk)
- Risk labels (Low, Medium, High)
- Wave card labels (Savings/year, Margin/year, Savings:)
- Timeline badges (Conditional, risk indicators)
- Tooltips (enabler wave, negative margin, projected ROI, adjusted ROI)
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https://claude.ai/code/session_03272424-c661-4002-a75e-2f81579fdd6e
cce483c5b1