feat(hint): H2 Phase C batch 4 — advanced-mode SQL tier-3 hints (ADR-0053)

Distinct SQL-syntax hints for the 11 advanced-mode forms: sql create
table / alter table / create index / drop index / drop table / insert /
update / delete, select, with, explain. hint_ids wired on all 11 nodes.

Hardened hint_key_for_input_in_mode for shared entry words: a bare
multi-form entry word defers to tier-2; when the second token isn't a
form word (insert into / update … set), it falls back to the
mode-primary key — so advanced mode resolves to the SQL form and simple
mode to the DSL form. catalogue + keys.rs registered. +2 spot tests +
grammar mode-disambiguation asserts; 2495 pass / 1 ignored, clippy clean.

src/dsl/grammar/ddl.rs

@@ -1879,7 +1879,7 @@ pub static SQL_CREATE_TABLE: CommandNode = CommandNode {
     shape: Node::Subgrammar(&super::sql_create_table::SQL_CREATE_TABLE_SHAPE),
     ast_builder: build_sql_create_table,
     help_id: Some("ddl.sql_create_table"),
-    hint_ids: &[],
+    hint_ids: &["sql_create_table"],
     usage_ids: &["parse.usage.sql_create_table"],
 };
 
@@ -1899,7 +1899,7 @@ pub static SQL_DROP_TABLE: CommandNode = CommandNode {
     shape: SQL_DROP_TABLE_SHAPE,
     ast_builder: build_sql_drop_table,
     help_id: Some("ddl.sql_drop_table"),
-    hint_ids: &[],
+    hint_ids: &["sql_drop_table"],
     usage_ids: &["parse.usage.sql_drop_table"],
 };
 
@@ -1919,7 +1919,7 @@ pub static SQL_DROP_INDEX: CommandNode = CommandNode {
     shape: SQL_DROP_INDEX_SHAPE,
     ast_builder: build_sql_drop_index,
     help_id: Some("ddl.sql_drop_index"),
-    hint_ids: &[],
+    hint_ids: &["sql_drop_index"],
     usage_ids: &["parse.usage.sql_drop_index"],
 };
 
@@ -2001,7 +2001,7 @@ pub static SQL_CREATE_INDEX: CommandNode = CommandNode {
     shape: SQL_CREATE_INDEX_SHAPE,
     ast_builder: build_sql_create_index,
     help_id: Some("ddl.sql_create_index"),
-    hint_ids: &[],
+    hint_ids: &["sql_create_index"],
     usage_ids: &["parse.usage.sql_create_index"],
 };
 
@@ -2560,7 +2560,7 @@ pub static SQL_ALTER_TABLE: CommandNode = CommandNode {
     shape: SQL_ALTER_TABLE_SHAPE,
     ast_builder: build_sql_alter_table,
     help_id: Some("ddl.sql_alter_table"),
-    hint_ids: &[],
+    hint_ids: &["sql_alter_table"],
     usage_ids: &["parse.usage.sql_alter_table"],
 };