chore(spec): regenerate the authorable surface from the merged tree

The os-regen driver kept the branch side of authorable-surface/data.json in the
merge commit and dropped main's four rows (EngineAggregateOptions search /
searchFields, the $empty operator on FieldOperators and SpecialOperator).
Regenerated from the merged source: main's file plus this branch's two
[RETIRED] marks, nothing else.

Claude-Session: https://claude.ai/code/session_01B3TqpoQbTAfG7G74GMDWNW
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/spec/authorable-surface/data.json

@@ -293,6 +293,8 @@
     "data/EngineAggregateOptions:context",
     "data/EngineAggregateOptions:groupBy",
     "data/EngineAggregateOptions:having",
+    "data/EngineAggregateOptions:search",
+    "data/EngineAggregateOptions:searchFields",
     "data/EngineAggregateOptions:timezone",
     "data/EngineAggregateOptions:where",
     "data/EngineCountOptions:context",
@@ -419,6 +421,7 @@
     "data/FieldMaskingKeep:keepTail",
     "data/FieldOperators:$between",
     "data/FieldOperators:$contains",
+    "data/FieldOperators:$empty",
     "data/FieldOperators:$endsWith",
     "data/FieldOperators:$eq",
     "data/FieldOperators:$exists",
@@ -948,6 +951,7 @@
     "data/ShardingConfig:shardingStrategy",
     "data/SortNode:field",
     "data/SortNode:order",
+    "data/SpecialOperator:$empty",
     "data/SpecialOperator:$exists",
     "data/SpecialOperator:$null",
     "data/SqliteConfig:autoMigrate",