feat: complete v0.3.1 agent workflow

internal/app/main_test.go

@@ -3,10 +3,12 @@ package app
 import (
 	"context"
 	"path/filepath"
+	"strings"
 	"testing"
 
 	"agentu/internal/agent"
 	"agentu/internal/session"
+	"agentu/internal/skills"
 	"agentu/pkg/config"
 	"agentu/pkg/llm"
 )
@@ -99,3 +101,13 @@ func TestInitializeSessionResumesExplicitID(t *testing.T) {
 		t.Fatal("explicit resume did not restore saved context")
 	}
 }
+
+func TestSystemPromptIncludesGlobalSkillsAndApprovalMode(t *testing.T) {
+	cfg := &config.Config{Agent: config.AgentConfig{SystemPrompt: "base", WorkingDir: "/tmp/project"}}
+	prompt := systemPrompt(cfg, true, false, []skills.Skill{{Name: "review", Path: "/tmp/review/SKILL.md", Content: "Review carefully."}})
+	for _, want := range []string{"base", "interactive user approval", "### review", "Review carefully."} {
+		if !strings.Contains(prompt, want) {
+			t.Fatalf("prompt missing %q:\n%s", want, prompt)
+		}
+	}
+}