style(format): attach declaration and control braces

.clang-format

@@ -11,6 +11,7 @@ AlignTrailingComments: true
 AllowAllParametersOfDeclarationOnNextLine: true
 AllowShortBlocksOnASingleLine: Never
 AllowShortCaseLabelsOnASingleLine: false
+AllowShortEnumsOnASingleLine: false
 AllowShortFunctionsOnASingleLine: Empty
 AllowShortIfStatementsOnASingleLine: Never
 AllowShortLoopsOnASingleLine: false
@@ -20,24 +21,8 @@ AlwaysBreakBeforeMultilineStrings: false
 AlwaysBreakTemplateDeclarations: Yes
 BinPackArguments: true
 BinPackParameters: true
-BraceWrapping:
-  AfterClass: true
-  AfterControlStatement: true
-  AfterEnum: true
-  AfterFunction: false
-  AfterNamespace: false
-  AfterObjCDeclaration: true
-  AfterStruct: true
-  AfterUnion: true
-  AfterCaseLabel: true
-  BeforeCatch: true
-  BeforeElse: true
-  IndentBraces: false
-  SplitEmptyFunction: true
-  SplitEmptyRecord: true
-  SplitEmptyNamespace: true
 BreakBeforeBinaryOperators: None
-BreakBeforeBraces: Custom
+BreakBeforeBraces: Attach
 BreakBeforeInheritanceComma: true
 BreakInheritanceList: BeforeColon
 BreakBeforeTernaryOperators: true

AGENTS.md

@@ -76,8 +76,10 @@ branch or worktree when the existing checkout contains uncommitted changes.
   Call these dependencies, not backends. Preserve machine-readable identifiers
   unless an explicit API or data-format migration is part of the task.
 - Follow `.clang-format` and `scripts/format_spacing.sh`, using clang-format 18.
-  Keep function opening braces on the declaration line, expand short function
-  bodies, use braces for control statements and keep names in `snake_case`.
+  Attach opening braces to declarations and control statements, including classes,
+  structs, enums, unions and functions. Keep `else` and `catch` on the closing-brace
+  line, expand short function and enum bodies, use braces for control statements
+  and keep names in `snake_case`.
 - Group includes as system, third-party, then project headers. Keep required
   platform-header dependencies in a valid order, including Winsock 2 before
   `windows.h` when both are needed. Separate include blocks, namespaces and