fix: correct V3 search filter key and response field names in ae_knowledge

- Filter key is "and" not "and_filters" (V3 API format)
- Entry IDs use journal_entry_id/id, not id_random (id_random is None)
- Dates use updated_on/created_on, not updated_at/created_at
- Total count lives in meta.data_list_count, not top-level total/count
- Inject query_string="%" when and filters present but no query, since
  the V3 search engine requires query_string for filters to apply
- Normalize tags from string to list in both entry_read and entries_list
- Fix order_by to use updated_on (not updated_at) in entries_list
- Correct ARCH__AE_INTEGRATION.md: and_filters → and, or_filters → or

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

documentation/ARCH__AE_INTEGRATION.md

@@ -43,11 +43,11 @@ POST /v3/crud/journal_entry/search
 ```json
 {
   "query_string": "fulltext search term",
-  "and_filters": [
+  "and": [
     { "field": "tags",       "op": "icontains", "value": "networking" },
     { "field": "created_on", "op": "gte",        "value": "2026-01-01" }
   ],
-  "or_filters": [...],
+  "or": [...],
   "page_size": 20,
   "page": 1,
   "order_by": "-updated_on"