style: format the whole tree with cargo fmt (stock defaults, #35)

One-time, mechanical reformat — no functional changes. The tree was not
rustfmt-clean (~1800 hunks across ~100 files); this brings it to stock
`cargo fmt` defaults so a `cargo fmt --check` CI gate can follow.
Behaviour-preserving: 2509 pass / 0 fail / 1 ignored (unchanged baseline),
clippy clean. A .git-blame-ignore-revs entry follows so `git blame`
skips this commit.

src/dsl/parser.rs

@@ -55,10 +55,9 @@ pub enum ParseError {
 impl std::fmt::Display for ParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            Self::Invalid { message, .. } => f.write_str(&crate::t!(
-                "parse.error_wrapper",
-                detail = message,
-            )),
+            Self::Invalid { message, .. } => {
+                f.write_str(&crate::t!("parse.error_wrapper", detail = message,))
+            }
             Self::Empty => f.write_str(&crate::t!("parse.empty")),
         }
     }
@@ -125,10 +124,7 @@ pub fn parse_command_with_schema(
 /// Schemaless, mode-aware parse (ADR-0030 §2). In `Mode::Simple`
 /// the walker gates SQL-only commands and produces the
 /// "this is SQL" hint instead of executing them.
-pub fn parse_command_in_mode(
-    input: &str,
-    mode: Mode,
-) -> Result<Command, ParseError> {
+pub fn parse_command_in_mode(input: &str, mode: Mode) -> Result<Command, ParseError> {
     parse_command_inner(input, None, mode)
 }
 
@@ -185,10 +181,8 @@ fn unknown_command_error(source: &str) -> ParseError {
         .collect();
     let joined = oxford_join(&entries);
     let start = skip_whitespace(source, 0);
-    let (position, found_word) = consume_ident(source, start).map_or_else(
-        || (start, None),
-        |(s, e)| (s, Some(&source[s..e])),
-    );
+    let (position, found_word) = consume_ident(source, start)
+        .map_or_else(|| (start, None), |(s, e)| (s, Some(&source[s..e])));
     let message = found_word.map_or_else(
         || format!("expected one of {joined}"),
         |w| format!("expected one of {joined}, found `{w}`"),
@@ -1034,19 +1028,22 @@ mod tests {
             false,
         );
         assert_eq!(
-            ok("add 1:n relationship from Customers.Id to Orders.CustId on delete cascade on update set null"),
+            ok(
+                "add 1:n relationship from Customers.Id to Orders.CustId on delete cascade on update set null"
+            ),
             expected
         );
         assert_eq!(
-            ok("add 1:n relationship from Customers.Id to Orders.CustId on update set null on delete cascade"),
+            ok(
+                "add 1:n relationship from Customers.Id to Orders.CustId on update set null on delete cascade"
+            ),
             expected
         );
     }
 
     #[test]
     fn add_relationship_repeated_clause_errors() {
-        let e =
-            err("add 1:n relationship from C.id to O.cid on delete cascade on delete restrict");
+        let e = err("add 1:n relationship from C.id to O.cid on delete cascade on delete restrict");
         match e {
             ParseError::Invalid { message, .. } => {
                 assert!(message.contains("specified twice"), "{message}");
@@ -1073,7 +1070,9 @@ mod tests {
     #[test]
     fn add_relationship_with_name_actions_and_flag() {
         assert_eq!(
-            ok("add 1:n relationship as cust_orders from Customers.Id to Orders.CustId on delete cascade on update no action --create-fk"),
+            ok(
+                "add 1:n relationship as cust_orders from Customers.Id to Orders.CustId on delete cascade on update no action --create-fk"
+            ),
             rel(
                 Some("cust_orders"),
                 ("Customers", "Id"),
@@ -1300,10 +1299,7 @@ mod tests {
     #[test]
     fn advanced_ambiguous_update_routes_to_sql() {
         assert!(matches!(
-            parse_command_in_mode(
-                "update Orders set total = 0 where id = 1",
-                Mode::Advanced,
-            ),
+            parse_command_in_mode("update Orders set total = 0 where id = 1", Mode::Advanced,),
             Ok(Command::SqlUpdate { .. })
         ));
     }
@@ -1399,10 +1395,7 @@ mod tests {
         // in advanced mode)" pointer is added at the hint layer
         // (input_render), not in the parsed command/error here.
         assert!(matches!(
-            parse_command_in_mode(
-                "delete from Orders where id = 1 returning *",
-                Mode::Simple,
-            ),
+            parse_command_in_mode("delete from Orders where id = 1 returning *", Mode::Simple,),
             Err(ParseError::Invalid { .. })
         ));
     }