feat: complete Spanish-to-English translation for AgenticReadinessTab
Added remaining translation keys and updated all hardcoded Spanish strings:
- Added new translation keys to en.json and es.json (emptyStates, sections subsections)
- Updated table headers (skill classification, tier sections, queue details)
- Converted TIER_SECTION_CONFIG to getTierSectionConfig(t) function
- Updated TierQueueSection and HumanOnlyByReasonSection components to use translations
- Translated section titles, summary text, and inline labels
- Build verified successfully
https://claude.ai/code/session_03272424-c661-4002-a75e-2f81579fdd6e
b4cd8933c2