Add --verbose flag to Claude subprocess invocation

Ensures richer stream-json output for cost parsing and debugging.
Adds a test to verify --verbose is always present in built args.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/internal/executor/claude_test.go b/internal/executor/claude_test.go
index faf2556..6745957 100644
--- a/internal/executor/claude_test.go
+++ b/internal/executor/claude_test.go
@@ -17,7 +17,7 @@ func TestClaudeRunner_BuildArgs_BasicTask(t *testing.T) {
 
 	args := r.buildArgs(tk)
 
-	expected := []string{"-p", "fix the bug", "--output-format", "stream-json", "--model", "sonnet"}
+	expected := []string{"-p", "fix the bug", "--output-format", "stream-json", "--verbose", "--model", "sonnet"}
 	if len(args) != len(expected) {
 		t.Fatalf("args length: want %d, got %d: %v", len(expected), len(args), args)
 	}
@@ -69,6 +69,26 @@ func TestClaudeRunner_BuildArgs_FullConfig(t *testing.T) {
 	}
 }
 
+func TestClaudeRunner_BuildArgs_AlwaysIncludesVerbose(t *testing.T) {
+	r := &ClaudeRunner{}
+	tk := &task.Task{
+		Claude: task.ClaudeConfig{Instructions: "do something"},
+	}
+
+	args := r.buildArgs(tk)
+
+	found := false
+	for _, a := range args {
+		if a == "--verbose" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("--verbose missing from args: %v", args)
+	}
+}
+
 func TestClaudeRunner_BinaryPath_Default(t *testing.T) {
 	r := &ClaudeRunner{}
 	if r.binaryPath() != "claude" {