style(agent): format whitespace in hook structs and constants

Remove trailing whitespace and standardize spacing in JSON struct tags, constants, and test data for improved code consistency.

pkg/agent/hook_process.go

@@ -91,8 +91,8 @@ type processHookAfterLLMResponse struct {
 
 type processHookBeforeToolResponse struct {
 	processHookDecisionResponse
-	Call   *ToolCallHookRequest  `json:"call,omitempty"`
-	Result *tools.ToolResult     `json:"result,omitempty"` // Result returned directly by hook (for respond action)
+	Call   *ToolCallHookRequest `json:"call,omitempty"`
+	Result *tools.ToolResult    `json:"result,omitempty"` // Result returned directly by hook (for respond action)
 }
 
 type processHookAfterToolResponse struct {

pkg/agent/hooks.go

@@ -25,7 +25,7 @@ type HookAction string
 const (
 	HookActionContinue  HookAction = "continue"
 	HookActionModify    HookAction = "modify"
-	HookActionRespond   HookAction = "respond"    // Return result directly, skip tool execution
+	HookActionRespond   HookAction = "respond" // Return result directly, skip tool execution
 	HookActionDenyTool  HookAction = "deny_tool"
 	HookActionAbortTurn HookAction = "abort_turn"
 	HookActionHardAbort HookAction = "hard_abort"

pkg/agent/hooks_test.go

@@ -356,10 +356,10 @@ func (h *respondHook) BeforeTool(
 	if h.respondTools[call.Tool] {
 		next := call.Clone()
 		next.HookResult = &tools.ToolResult{
-			ForLLM:   "hook-responded: " + call.Tool,
-			ForUser:  "",
-			Silent:   false,
-			IsError:  false,
+			ForLLM:  "hook-responded: " + call.Tool,
+			ForUser: "",
+			Silent:  false,
+			IsError: false,
 		}
 		return next, HookDecision{Action: HookActionRespond}, nil
 	}