refactor(instruction): remove project instruction handling and related tests

internal/ai/runtime/instruction/assembler.go

@@ -20,12 +20,10 @@ type AssemblerInput struct {
 	GovernanceInstruction string
 	SkillInstruction      string
 	ToolAppendices        []string
-	ProjectInstruction    string
 }
 
 type AssemblySummary struct {
 	SectionTitles     []string
-	HasProjectRule    bool
 	HasGovernanceRule bool
 	HasAgentRule      bool
 	HasSkillRule      bool
@@ -46,17 +44,8 @@ func (a *Assembler) Build(input AssemblerInput) string {
 }
 
 func (a *Assembler) Assemble(input AssemblerInput) AssemblyResult {
-	parts := make([]string, 0, 5)
-	summary := AssemblySummary{SectionTitles: make([]string, 0, 5)}
-	projectInstruction := strings.TrimSpace(input.ProjectInstruction)
-	if projectInstruction == "" {
-		projectInstruction = strings.TrimSpace(DefaultProjectInstruction)
-	}
-	if projectInstruction != "" {
-		parts = append(parts, buildInstructionSection("项目级规则", projectInstruction))
-		summary.HasProjectRule = true
-		summary.SectionTitles = append(summary.SectionTitles, "项目级规则")
-	}
+	parts := make([]string, 0, 4)
+	summary := AssemblySummary{SectionTitles: make([]string, 0, 4)}
 	governanceInstruction := strings.TrimSpace(input.GovernanceInstruction)
 	if governanceInstruction == "" && a != nil {
 		governanceInstruction = strings.TrimSpace(a.governanceInstruction)

internal/ai/runtime/instruction/assembler_test.go

@@ -7,15 +7,11 @@ import (
 
 func TestAssemblerRespectsProvidedSources(t *testing.T) {
 	result := NewAssembler().Assemble(AssemblerInput{
-		ProjectInstruction:    "project-rule",
 		GovernanceInstruction: "governance-rule",
 		AgentInstruction:      "agent-rule",
 		SkillInstruction:      "skill-rule",
 		ToolAppendices:        []string{"tool-rule-1", "tool-rule-2"},
 	})
-	if !strings.Contains(result.Text, "项目级规则：\nproject-rule") {
-		t.Fatalf("missing project instruction: %s", result.Text)
-	}
 	if !strings.Contains(result.Text, "系统治理规则：\ngovernance-rule") {
 		t.Fatalf("missing governance instruction: %s", result.Text)
 	}
@@ -25,7 +21,7 @@ func TestAssemblerRespectsProvidedSources(t *testing.T) {
 	if !strings.Contains(result.Text, "工具补充规则：\ntool-rule-1") {
 		t.Fatalf("missing tool appendix: %s", result.Text)
 	}
-	if !result.Summary.HasProjectRule || !result.Summary.HasGovernanceRule || !result.Summary.HasAgentRule || !result.Summary.HasSkillRule || !result.Summary.HasToolRule {
+	if !result.Summary.HasGovernanceRule || !result.Summary.HasAgentRule || !result.Summary.HasSkillRule || !result.Summary.HasToolRule {
 		t.Fatalf("unexpected summary: %#v", result.Summary)
 	}
 }

internal/ai/runtime/instruction/project_instruction.go

@@ -1,16 +0,0 @@
-package instruction
-
-// DefaultProjectInstruction 为当前项目统一注入的全局项目规则。
-//
-// 默认回退到内置常量；运行时优先由 ProjectInstructionProvider 读取仓库中的 AGENTS.md。
-// TODO 这里是做什么的？为什么不直接读取AIAgent的？
-const DefaultProjectInstruction = `# AGENTS.md
-
-本文件定义本项目内 AI Agent 的强制开发规则。除非用户明确要求偏离，否则必须遵循。
-
-## 1. 基本原则
-
-- 适用范围：仓库根目录及所有子目录
-- 优先级：用户明确指令 > 本文件 > 默认实现习惯
-- 若与用户要求冲突：先执行用户要求，并在变更说明中标注偏离点
-`

internal/ai/runtime/instruction/providers.go

@@ -1,8 +1,6 @@
 package instruction
 
 import (
-	"os"
-	"path/filepath"
 	"strings"
 
 	runtimetooling "cs-agent/internal/ai/runtime/tooling"
@@ -10,56 +8,6 @@ import (
 	"cs-agent/internal/pkg/toolx"
 )
 
-type ProjectInstructionProvider struct {
-	fileName string
-}
-
-func NewProjectInstructionProvider() *ProjectInstructionProvider {
-	return &ProjectInstructionProvider{fileName: "AGENTS.md"}
-}
-
-func (p *ProjectInstructionProvider) Resolve() string {
-	if text := p.loadFromFile(); text != "" {
-		return text
-	}
-	return strings.TrimSpace(DefaultProjectInstruction)
-}
-
-func (p *ProjectInstructionProvider) loadFromFile() string {
-	path := p.resolvePath()
-	if path == "" {
-		return ""
-	}
-	data, err := os.ReadFile(path)
-	if err != nil {
-		return ""
-	}
-	return strings.TrimSpace(string(data))
-}
-
-func (p *ProjectInstructionProvider) resolvePath() string {
-	fileName := "AGENTS.md"
-	if p != nil && strings.TrimSpace(p.fileName) != "" {
-		fileName = strings.TrimSpace(p.fileName)
-	}
-	wd, err := os.Getwd()
-	if err != nil {
-		return ""
-	}
-	dir := wd
-	for {
-		candidate := filepath.Join(dir, fileName)
-		if stat, statErr := os.Stat(candidate); statErr == nil && !stat.IsDir() {
-			return candidate
-		}
-		parent := filepath.Dir(dir)
-		if parent == dir {
-			return ""
-		}
-		dir = parent
-	}
-}
-
 type ToolAppendixProvider struct{}
 
 func NewToolAppendixProvider() *ToolAppendixProvider {

internal/ai/runtime/instruction/providers_test.go

@@ -1,48 +0,0 @@
-package instruction
-
-import (
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-)
-
-func TestProjectInstructionProviderResolveFromAgentsFile(t *testing.T) {
-	tmpDir := t.TempDir()
-	nestedDir := filepath.Join(tmpDir, "nested", "child")
-	if err := os.MkdirAll(nestedDir, 0o755); err != nil {
-		t.Fatalf("mkdir failed: %v", err)
-	}
-	content := "# AGENTS.md\n\nfrom temp file"
-	if err := os.WriteFile(filepath.Join(tmpDir, "AGENTS.md"), []byte(content), 0o644); err != nil {
-		t.Fatalf("write file failed: %v", err)
-	}
-	wd, err := os.Getwd()
-	if err != nil {
-		t.Fatalf("getwd failed: %v", err)
-	}
-	defer func() { _ = os.Chdir(wd) }()
-	if err := os.Chdir(nestedDir); err != nil {
-		t.Fatalf("chdir failed: %v", err)
-	}
-	got := NewProjectInstructionProvider().Resolve()
-	if !strings.Contains(got, "from temp file") {
-		t.Fatalf("expected provider to load AGENTS.md from file, got: %s", got)
-	}
-}
-
-func TestProjectInstructionProviderFallbacksToDefault(t *testing.T) {
-	tmpDir := t.TempDir()
-	wd, err := os.Getwd()
-	if err != nil {
-		t.Fatalf("getwd failed: %v", err)
-	}
-	defer func() { _ = os.Chdir(wd) }()
-	if err := os.Chdir(tmpDir); err != nil {
-		t.Fatalf("chdir failed: %v", err)
-	}
-	got := NewProjectInstructionProvider().Resolve()
-	if !strings.Contains(got, "本文件定义本项目内 AI Agent 的强制开发规则") {
-		t.Fatalf("expected fallback project instruction, got: %s", got)
-	}
-}

internal/ai/runtime/instruction/service.go

@@ -9,7 +9,6 @@ import (
 
 type Service struct {
 	assembler                     *Assembler
-	projectInstructionProvider    *ProjectInstructionProvider
 	governanceInstructionProvider *GovernanceInstructionProvider
 	skillInstructionProvider      *SkillInstructionProvider
 	toolAppendixProvider          *ToolAppendixProvider
@@ -17,7 +16,6 @@ type Service struct {
 
 func NewService(
 	assembler *Assembler,
-	projectProvider *ProjectInstructionProvider,
 	governanceProvider *GovernanceInstructionProvider,
 	skillProvider *SkillInstructionProvider,
 	toolProvider *ToolAppendixProvider,
@@ -25,9 +23,6 @@ func NewService(
 	if assembler == nil {
 		assembler = NewAssembler()
 	}
-	if projectProvider == nil {
-		projectProvider = NewProjectInstructionProvider()
-	}
 	if governanceProvider == nil {
 		governanceProvider = NewGovernanceInstructionProvider()
 	}
@@ -39,7 +34,6 @@ func NewService(
 	}
 	return &Service{
 		assembler:                     assembler,
-		projectInstructionProvider:    projectProvider,
 		governanceInstructionProvider: governanceProvider,
 		skillInstructionProvider:      skillProvider,
 		toolAppendixProvider:          toolProvider,
@@ -52,13 +46,9 @@ func (s *Service) Build(
 	toolDefinitions []runtimetooling.MCPToolDefinition,
 	extraToolCodes map[string]string,
 ) AssemblyResult {
-	projectInstruction := ""
 	governanceInstruction := ""
 	skillInstruction := ""
 	toolAppendices := make([]string, 0)
-	if s != nil && s.projectInstructionProvider != nil {
-		projectInstruction = s.projectInstructionProvider.Resolve()
-	}
 	if s != nil && s.governanceInstructionProvider != nil {
 		governanceInstruction = s.governanceInstructionProvider.Resolve()
 	}
@@ -77,6 +67,5 @@ func (s *Service) Build(
 		GovernanceInstruction: governanceInstruction,
 		SkillInstruction:      skillInstruction,
 		ToolAppendices:        toolAppendices,
-		ProjectInstruction:    projectInstruction,
 	})
 }