removing steel sql

common/proto/table_script.proto

@@ -26,7 +26,7 @@ service TableScript {
   //    • Allowed always: self-references (same table)
   //    • Structured access via steel_get_column
   //      requires an explicit link in table_definition_links
-  //    • Raw SQL access via steel_query_sql is permitted (still validated)
+  // - Rejects raw SQL access; steel_query_sql is not part of the supported DSL
   // - Detects and rejects circular dependencies across all scripts in the schema
   //   (self-references are allowed and not treated as cycles)
   // - Transforms the script to decimal-safe operations (steel_decimal)
@@ -70,10 +70,7 @@ message PostTableScriptRequest {
   //       • self-references are allowed without links
   //       • other tables require an explicit link from the source table
   //         (table_definition_links) or the request fails
-  //   - Raw SQL access (no link required, but still validated):
-  //       (steel_query_sql "SELECT ...")
-  //       • Basic checks disallow operations that imply prohibited types,
-  //         e.g., EXTRACT(…), DATE_PART(…), ::DATE, ::TIMESTAMPTZ, ::BIGINT, CAST(…)
+  //   - Raw SQL access is not supported; steel_query_sql is rejected
   //   - Self variable access in transformed scripts:
   //       (get-var "column_name") is treated as referencing the current table
   //
@@ -85,8 +82,8 @@ message PostTableScriptRequest {
   //     BIGINT, TEXT, BOOLEAN, DATE, TIMESTAMPTZ
   //
   // Dependency tracking and cycles:
-  //   - Dependencies are extracted from steel_get_column, get-var,
-  //     and steel_query_sql and stored in script_dependencies with context
+  //   - Dependencies are extracted from steel_get_column and get-var and stored
+  //     in script_dependencies with context
   //   - Cycles across tables are rejected (self-dependency is allowed)
   string script = 3;
 
@@ -105,7 +102,6 @@ message TableScriptResponse {
 
   // Human-readable warnings concatenated into a single string. Possible messages:
   //  - Warning if the script references itself (may affect first population)
-  //  - Count of raw SQL queries present
   //  - Info about number of structured linked-table accesses
   //  - Warning if many dependencies may affect performance
   string warnings = 2;
@@ -137,5 +133,6 @@ message ScriptDependency {
   string target_table = 1;
   string dependency_type = 2;
   string column = 3;
+  // Deprecated legacy field. Raw SQL dependencies are no longer produced.
   string query_fragment = 4;
 }