Extend system search to include local e-conomic customer index fields, synonym expansion (e.g., rabat -> discount), and enhanced entity matching. Update OpenAPI spec, unit tests, and cron sync tasks accordingly.

openapi.yaml

@@ -7751,7 +7751,7 @@ paths:
       tags:
         - Search
       summary: System-wide search
-      description: Search across all supported entities with permission-aware filtering and optional intent parsing debug metadata.
+      description: Search across all supported entities with permission-aware filtering and optional intent parsing debug metadata. Customer records and customer-related entities are matched against a local e-conomic customer index (name/address/email/CVR) that is refreshed by cron.
       operationId: systemWideSearchGet
       parameters:
         - in: query
@@ -7759,7 +7759,7 @@ paths:
           required: true
           schema:
             type: string
-          description: Free-text query to search for.
+          description: Free-text query to search for. Supports natural-language intent fallback and domain synonyms such as `rabat` -> `discount`.
         - in: query
           name: include_types
           required: false
@@ -7826,7 +7826,7 @@ paths:
       tags:
         - Search
       summary: System-wide search
-      description: Search across all supported entities using JSON request payload.
+      description: Search across all supported entities using JSON request payload. Customer-related matches include local e-conomic customer index fields.
       operationId: systemWideSearchPost
       requestBody:
         required: true
@@ -9224,7 +9224,7 @@ components:
       properties:
         query:
           type: string
-          description: Free-text query to search for.
+          description: Free-text query to search for. Customer lookups include local e-conomic index fields and lexical synonym expansion (for example `rabat` -> `discount`).
         include_types:
           type: array
           items: