feat: Update example values in field metadata for enhanced clarity and coverage

solr_metadata.py

@@ -16,13 +16,13 @@ field_metadata = [
     {
         "field_name": "news_type",
         "type": "string (categorical)",
-        "example_values": ["product news", "financial news", "regulatory news"],
+        "example_values": ["financial news", "product news", "other company news", "regulatory news", "people news", "funding news", "pharma services deals", "product approvals", "product deals", "technology news", "company acquisitions", "product filings", "legal news", "discovery technology deals", "company divestitures", "latest dds patents", "dd technology deals", "product acquisitions", "option agreement", "joint venture deal", "technology acquisitions"],
         "definition": "The category of the news article itself (e.g., financial, regulatory, acquisition). Use for filtering by the type of event being reported."
     },
     {
         "field_name": "event_type",
         "type": "string (categorical)",
-        "example_values": ["phase 2", "phase 1", "pre clinical", "marketed"],
+        "example_values": ["phase 1", "phase 2", "pre clinical", "phase 3", "marketed", "approved", "registration", "research", "phase 0", "tentative approval", "bioequivalency", "undisclosed", "approvable"],
         "definition": "The clinical or developmental stage of a product or event discussed in the article. Essential for queries about clinical trial phases."
     },
     {