Search & queries - Coconut

Method & path	Purpose
`GET /search?q=`	Full-text search
`GET /search/metadata?filters=`	Metadata query
`GET /search/metadata/keys`	Metadata key discovery

Metadata filter shape

[
  {"key":"stage","op":"eq","value":"diligence"},
  {"key":"conviction-score","op":"gte","value":0.7}
]

Supported ops: eq, neq, exists, missing, gt, gte, lt, lte (numbers and ISO-date strings), and contains (array membership). Filters are AND-ed together. Use orderBy and order=asc|desc to rank.