feat: complete OpportunityPrioritizer translation to English

- Add 40+ new translation keys for all remaining Spanish text
- Update TIER_CONFIG to use translation keys for labels and descriptions
- Translate dynamically generated whyPrioritized and nextSteps content
- Convert all hardcoded Spanish strings to i18n translation calls
- Fix malformed t() call on line 402
- Add proper translations for error messages, buttons, and methodology

All OpportunityPrioritizer content is now fully bilingual (en/es)

https://claude.ai/code/session_01GNbnkFoESkRcnPr3bLCYDg

frontend/locales/en.json

@@ -1849,12 +1849,46 @@
     "tierLabels": {
       "automate": "Automate",
       "assist": "Assist",
-      "augment": "Augment"
+      "augment": "Augment",
+      "human": "Human"
     },
     "timelines": {
       "automate": "3-6 months",
       "assist": "6-9 months",
       "augment": "9-12 months"
+    },
+    "tierDescriptions": {
+      "automate": "Full automation with AI agents",
+      "assist": "AI Copilot for human agents",
+      "augment": "Process standardization and improvement",
+      "humanOnly": "Requires human intervention"
+    },
+    "agenticScore": "Agentic Score",
+    "whyPriority1": "Why is this priority #1?",
+    "viewCompleteDetail": "View Complete Detail",
+    "showLess": "Show less",
+    "whyThisPosition": "Why this position?",
+    "keyMetrics": "Key Metrics",
+    "noOpportunitiesTitle": "No opportunities identified",
+    "noOpportunitiesDescription": "Current data doesn't show viable automation opportunities.",
+    "reasons": {
+      "highSavingsPotential": "High savings potential (€{{amount}}K/year)",
+      "highVolume": "High volume ({{volume}} interactions)",
+      "highlyPredictable": "Highly predictable and repetitive process",
+      "lowVariability": "Low variability in handling times",
+      "lowTransferRate": "Low transfer rate",
+      "highFeasibility": "High technical feasibility"
+    },
+    "steps": {
+      "automate1": "Define main conversational flows",
+      "automate2": "Identify necessary integrations (CRM, APIs)",
+      "automate3": "Create pilot with 10% of volume",
+      "assist1": "Map agent friction points",
+      "assist2": "Design contextual suggestions",
+      "assist3": "Pilot with selected team",
+      "augment1": "Analyze root cause of variability",
+      "augment2": "Standardize processes and scripts",
+      "augment3": "Train team on best practices"
     }
   }
 }