diff --git a/internal/coordinator/context.go b/internal/coordinator/context.go
new file mode 100644
index 00000000..9cfc6c7a
--- /dev/null
+++ b/internal/coordinator/context.go
@@ -0,0 +1,168 @@
+package coordinator
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"chat-agent-system/internal/bizdev"
+	"chat-agent-system/internal/intent"
+	"chat-agent-system/internal/squad"
+)
+
+// UserInfo 用户在系统与项目内的身份
+type UserInfo struct {
+	ID          string `json:"id"`
+	Name        string `json:"name"`
+	Role        string `json:"role"`         // 系统角色 (如 engineer, pm, director)
+	ProjectRole string `json:"project_role"` // 项目内角色 (如 编制人 composer, 审核人 reviewer, 批准人 approver)
+}
+
+// ProjectInfo 项目与工作流当前基准
+type ProjectInfo struct {
+	ID              string               `json:"id"`
+	Name            string               `json:"name"`
+	CustomerName    string               `json:"customer_name"`
+	DeviceType      string               `json:"device_type"`
+	IntendedUse     string               `json:"intended_use"`
+	TargetMarket    string               `json:"target_market"`
+	CurrentWorkflow string               `json:"current_workflow"`
+	CurrentStage    bizdev.MaturityStage `json:"current_stage"`
+	StageRules      []string             `json:"stage_rules,omitempty"`
+}
+
+// UserDocsInfo 用户相关文档清单与认领状态
+type UserDocsInfo struct {
+	Composed []string `json:"composed"` // 负责编制的文档
+	Reviewed []string `json:"reviewed"` // 负责审核的文档
+	Approved []string `json:"approved"` // 负责批准的文档
+	Claimed  []string `json:"claimed"`  // 已认领/已打开查阅的文档
+}
+
+// PendingItems 待用户处理或决策的待办项
+type PendingItems struct {
+	ConfirmModifications []string `json:"confirm_modifications,omitempty"`
+	PendingReviews       []string `json:"pending_reviews,omitempty"`
+	PendingApprovals     []string `json:"pending_approvals,omitempty"`
+	MyDraftsInProgress   []string `json:"my_drafts_in_progress,omitempty"`
+	UnreadSupplements    []string `json:"unread_supplements,omitempty"`
+}
+
+// UserProjectContext 用户项目级全量统一上下文 (对话系统与执行系统共同消费)
+type UserProjectContext struct {
+	SnapshotID         string                 `json:"snapshot_id"`
+	AssembledAt        time.Time              `json:"assembled_at"`
+	User               UserInfo               `json:"user"`
+	Project            ProjectInfo            `json:"project"`
+	UserDocs           UserDocsInfo           `json:"user_docs"`
+	Pending            PendingItems           `json:"pending"`
+	BlackboardFacts    map[string]string      `json:"blackboard_facts"`
+	LatestAdvisorBrief *squad.AdvisorBriefing `json:"latest_advisor_brief,omitempty"`
+	AvailableActions   []string               `json:"available_actions"`
+	RecentEvents       []string               `json:"recent_events,omitempty"`
+	WorkDir            string                 `json:"work_dir,omitempty"`
+}
+
+// ContextAssembler 上下文组装服务
+type ContextAssembler struct{}
+
+func NewContextAssembler() *ContextAssembler {
+	return &ContextAssembler{}
+}
+
+// ComputeAvailableActions 根据当前成熟度阶段与角色计算允许执行的操作集合
+func ComputeAvailableActions(stage bizdev.MaturityStage, pRole string) []string {
+	actions := []string{"QUERY_PROGRESS", "SUPPLEMENT_INFO", "VIEW_DOC"}
+
+	switch stage {
+	case bizdev.StageV01_Triage:
+		actions = append(actions, "TRIGGER_TASK:intake", "ADVANCE_STAGE:V0.5_feasibility")
+	case bizdev.StageV05_Feasibility:
+		actions = append(actions,
+			"TRIGGER_TASK:research",
+			"TRIGGER_TASK:feasibility_reg",
+			"TRIGGER_TASK:prelim_design",
+			"ADVANCE_STAGE:V1.0_quoting",
+		)
+	case bizdev.StageV10_Quoting:
+		actions = append(actions, "TRIGGER_TASK:cdo_quote", "LOCK_COMMERCIAL")
+	default:
+		actions = append(actions, "ADVANCE_STAGE:V0.1_triage")
+	}
+
+	return actions
+}
+
+// ToSnapshot 转换为 L1 意图识别器所需的轻量上下文快照
+func (ctx *UserProjectContext) ToSnapshot() *intent.ContextSnapshot {
+	if ctx == nil {
+		return nil
+	}
+	return &intent.ContextSnapshot{
+		SnapshotID:       ctx.SnapshotID,
+		ProjectName:      ctx.Project.Name,
+		CurrentStage:     string(ctx.Project.CurrentStage),
+		AvailableActions: ctx.AvailableActions,
+	}
+}
+
+// AssembleFromWorkspace 基于现有工作区快速组装 UserProjectContext
+func (a *ContextAssembler) AssembleFromWorkspace(workDir string, user UserInfo) (*UserProjectContext, error) {
+	snapID := fmt.Sprintf("ctx_%d", time.Now().UnixNano())
+
+	ctx := &UserProjectContext{
+		SnapshotID:       snapID,
+		AssembledAt:      time.Now(),
+		User:             user,
+		WorkDir:          workDir,
+		BlackboardFacts:  make(map[string]string),
+		AvailableActions: []string{"QUERY_PROGRESS", "SUPPLEMENT_INFO", "VIEW_DOC"},
+	}
+
+	// 1. 尝试读取 workspace.json
+	wsMetaPath := filepath.Join(workDir, "workspace.json")
+	if data, err := os.ReadFile(wsMetaPath); err == nil {
+		var wsMeta squad.WorkspaceMetadata
+		if json.Unmarshal(data, &wsMeta) == nil {
+			ctx.Project.Name = wsMeta.ProjectName
+			ctx.Project.CustomerName = wsMeta.CustomerName
+			ctx.Project.DeviceType = wsMeta.DeviceType
+			ctx.Project.IntendedUse = wsMeta.IntendedUse
+			ctx.Project.TargetMarket = wsMeta.TargetMarket
+			ctx.Project.CurrentWorkflow = wsMeta.TaskKey
+		}
+	}
+
+	// 2. 尝试读取 blackboard.json
+	bbPath := filepath.Join(workDir, "blackboard.json")
+	if data, err := os.ReadFile(bbPath); err == nil {
+		var bb squad.BlackboardState
+		if json.Unmarshal(data, &bb) == nil {
+			for k, v := range bb.Fields {
+				ctx.BlackboardFacts[k] = v
+			}
+			for _, g := range bb.Gaps {
+				if g.Blocking && !g.Resolved {
+					ctx.Pending.ConfirmModifications = append(ctx.Pending.ConfirmModifications, g.Item)
+				}
+			}
+		}
+	}
+
+	// 3. 尝试提取阶段与文档
+	if ctx.Project.CurrentStage == "" {
+		ctx.Project.CurrentStage = bizdev.StageV01_Triage
+	}
+	ctx.AvailableActions = ComputeAvailableActions(ctx.Project.CurrentStage, user.ProjectRole)
+
+	// 4. 若有 output.md，尝试提取最新的参谋简报
+	outPath := filepath.Join(workDir, "output.md")
+	if outBytes, err := os.ReadFile(outPath); err == nil && len(outBytes) > 0 {
+		ctx.LatestAdvisorBrief = squad.ExtractAdvisorBriefing(ctx.Project.CurrentWorkflow, string(outBytes), ctx.BlackboardFacts)
+		ctx.UserDocs.Composed = append(ctx.UserDocs.Composed, ctx.Project.CurrentWorkflow)
+	}
+
+	return ctx, nil
+}
diff --git a/internal/coordinator/context_test.go b/internal/coordinator/context_test.go
new file mode 100644
index 00000000..846ec72b
--- /dev/null
+++ b/internal/coordinator/context_test.go
@@ -0,0 +1,105 @@
+package coordinator_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"chat-agent-system/internal/bizdev"
+	"chat-agent-system/internal/coordinator"
+	"chat-agent-system/internal/intent"
+)
+
+func TestComputeAvailableActions(t *testing.T) {
+	actionsV01 := coordinator.ComputeAvailableActions(bizdev.StageV01_Triage, "composer")
+	foundAdvance := false
+	for _, a := range actionsV01 {
+		if a == "ADVANCE_STAGE:V0.5_feasibility" {
+			foundAdvance = true
+		}
+	}
+	if !foundAdvance {
+		t.Errorf("expected V0.1 actions to contain advance to V0.5: %v", actionsV01)
+	}
+
+	actionsV05 := coordinator.ComputeAvailableActions(bizdev.StageV05_Feasibility, "composer")
+	foundAdvanceQuote := false
+	for _, a := range actionsV05 {
+		if a == "ADVANCE_STAGE:V1.0_quoting" {
+			foundAdvanceQuote = true
+		}
+	}
+	if !foundAdvanceQuote {
+		t.Errorf("expected V0.5 actions to contain advance to V1.0: %v", actionsV05)
+	}
+}
+
+func TestAssembleFromWorkspace(t *testing.T) {
+	tmpDir := t.TempDir()
+
+	wsJSON := `{
+		"project_name": "智能听诊器系统",
+		"customer_name": "水木清研",
+		"device_type": "电子听诊器",
+		"task_key": "intake"
+	}`
+	_ = os.WriteFile(filepath.Join(tmpDir, "workspace.json"), []byte(wsJSON), 0o644)
+
+	bbJSON := `{
+		"fields": {
+			"project_name": "智能听诊器系统",
+			"target_market": "国内"
+		},
+		"gaps": [
+			{"item": "缺少蓝牙传输规格", "blocking": true, "resolved": false}
+		]
+	}`
+	_ = os.WriteFile(filepath.Join(tmpDir, "blackboard.json"), []byte(bbJSON), 0o644)
+
+	outputMD := "# 用户初始需求收集表\n\n## 结论\n初步整理完成。\n\n## 待确认清单\n- 蓝牙传输距离与功耗要求\n"
+	_ = os.WriteFile(filepath.Join(tmpDir, "output.md"), []byte(outputMD), 0o644)
+
+	user := coordinator.UserInfo{
+		ID:          "u_1001",
+		Name:        "张工",
+		Role:        "engineer",
+		ProjectRole: "composer",
+	}
+
+	assembler := coordinator.NewContextAssembler()
+	ctx, err := assembler.AssembleFromWorkspace(tmpDir, user)
+	if err != nil {
+		t.Fatalf("assemble context failed: %v", err)
+	}
+
+	if ctx.Project.Name != "智能听诊器系统" {
+		t.Errorf("expected project name '智能听诊器系统', got '%s'", ctx.Project.Name)
+	}
+	if ctx.BlackboardFacts["target_market"] != "国内" {
+		t.Errorf("expected target_market '国内', got '%s'", ctx.BlackboardFacts["target_market"])
+	}
+	if len(ctx.Pending.ConfirmModifications) == 0 {
+		t.Errorf("expected blocking gap in pending confirm modifications")
+	}
+	if ctx.LatestAdvisorBrief == nil {
+		t.Fatalf("expected latest advisor brief to be assembled")
+	}
+	if ctx.LatestAdvisorBrief.MaturityLevel != "V0.1" {
+		t.Errorf("expected V0.1 maturity, got %s", ctx.LatestAdvisorBrief.MaturityLevel)
+	}
+}
+
+func TestIntentContractTypes(t *testing.T) {
+	cand := intent.CandidateIntent{
+		Intent:     intent.IntentQueryProgress,
+		Confidence: 0.95,
+		FilledSlots: map[string]string{
+			intent.SlotQueryTopic: "progress",
+		},
+		Reasoning: "用户明确询问当前立项走到哪一步了",
+	}
+
+	if cand.Intent != intent.IntentQueryProgress || cand.Confidence < 0.9 {
+		t.Errorf("candidate intent fields mismatch: %+v", cand)
+	}
+}
diff --git a/internal/coordinator/engine.go b/internal/coordinator/engine.go
new file mode 100644
index 00000000..172bae5a
--- /dev/null
+++ b/internal/coordinator/engine.go
@@ -0,0 +1,373 @@
+package coordinator
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"chat-agent-system/internal/bizdev"
+	"chat-agent-system/internal/intent"
+	"chat-agent-system/internal/squad"
+)
+
+// CoordinationStatus 协调裁决状态
+type CoordinationStatus string
+
+const (
+	StatusAccepted              CoordinationStatus = "ACCEPTED"
+	StatusRejected              CoordinationStatus = "REJECTED"
+	StatusClarificationRequired CoordinationStatus = "CLARIFICATION_REQUIRED"
+)
+
+// CoordinationResult 协调层给对话层的回执
+type CoordinationResult struct {
+	Status              CoordinationStatus     `json:"status"`
+	Intent              intent.IntentType      `json:"intent"`
+	RejectReason        string                 `json:"reject_reason,omitempty"`
+	ClarificationPrompt string                 `json:"clarification_prompt,omitempty"`
+	NaturalReply        string                 `json:"natural_reply"`
+	AdvisorBrief        *squad.AdvisorBriefing `json:"advisor_brief,omitempty"`
+	ArtifactPath        string                 `json:"artifact_path,omitempty"`
+	UpdatedContext      *UserProjectContext    `json:"updated_context"`
+}
+
+// CoordinatorEngine L2 协调引擎
+type CoordinatorEngine struct {
+	bizdevSvc bizdev.BizdevService
+	assembler *ContextAssembler
+}
+
+func NewCoordinatorEngine(bizdevSvc bizdev.BizdevService) *CoordinatorEngine {
+	return &CoordinatorEngine{
+		bizdevSvc: bizdevSvc,
+		assembler: NewContextAssembler(),
+	}
+}
+
+// ProcessIntent 校验候选意图合法性并驱动调度与响应
+func (e *CoordinatorEngine) ProcessIntent(
+	ctx context.Context,
+	recRes *intent.IntentRecognitionResult,
+	userCtx *UserProjectContext,
+) (*CoordinationResult, error) {
+	if userCtx == nil {
+		userCtx = &UserProjectContext{
+			User:            UserInfo{ID: "guest", Name: "用户", Role: "engineer", ProjectRole: "composer"},
+			BlackboardFacts: make(map[string]string),
+		}
+	}
+
+	top := recRes.TopIntent
+	if top == nil {
+		top = &intent.CandidateIntent{
+			Intent:     intent.IntentCasualChat,
+			Confidence: 1.0,
+		}
+	}
+
+	// 1. 若置信度极低或显式缺少核心槽位，转为用户澄清
+	if recRes.RequiresClarifying && top.ClarificationQuestion != "" {
+		return &CoordinationResult{
+			Status:              StatusClarificationRequired,
+			Intent:              top.Intent,
+			ClarificationPrompt: top.ClarificationQuestion,
+			NaturalReply:        top.ClarificationQuestion,
+			UpdatedContext:      userCtx,
+		}, nil
+	}
+
+	// 2. 根据候选意图执行分支
+	switch top.Intent {
+	case intent.IntentQueryProgress:
+		return e.handleQueryProgress(top, userCtx)
+
+	case intent.IntentSupplementInfo:
+		return e.handleSupplementInfo(top, userCtx)
+
+	case intent.IntentAdvanceStage:
+		return e.handleAdvanceStage(ctx, top, userCtx)
+
+	case intent.IntentTriggerTask:
+		return e.handleTriggerTask(ctx, top, userCtx)
+
+	case intent.IntentCasualChat:
+		return e.handleCasualChat(userCtx)
+
+	default:
+		return &CoordinationResult{
+			Status:         StatusAccepted,
+			Intent:         top.Intent,
+			NaturalReply:   "我已收到您的信息。请问需要我为您查询项目进展，还是协助您推进到下一阶段？",
+			UpdatedContext: userCtx,
+		}, nil
+	}
+}
+
+func (e *CoordinatorEngine) handleQueryProgress(cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
+	brief := userCtx.LatestAdvisorBrief
+	topic := cand.FilledSlots[intent.SlotQueryTopic]
+
+	if brief == nil {
+		reply := fmt.Sprintf("您好，项目「%s」当前处于初始准备期。我建议先行为您启动【V0.1 闪电摸底】，快速沉淀第一版立项画像并为您准备沟通话术。您希望现在开始吗？",
+			userCtx.Project.Name)
+		return &CoordinationResult{
+			Status:         StatusAccepted,
+			Intent:         cand.Intent,
+			NaturalReply:   reply,
+			UpdatedContext: userCtx,
+		}, nil
+	}
+
+	var sb strings.Builder
+	switch topic {
+	case "risk":
+		sb.WriteString(fmt.Sprintf("关于「%s」的潜在风险，我为您提前预警以下关键卡点：\n", userCtx.Project.Name))
+		for _, r := range brief.PreemptiveRisks {
+			sb.WriteString(fmt.Sprintf("• ⚠️ %s\n", r))
+		}
+		sb.WriteString("\n建议您在后续与客户沟通时预先留出安全边际。")
+
+	case "talk_script":
+		sb.WriteString("这是为您草拟的对外商务沟通话术，您可以直接使用或微调：\n\n")
+		sb.WriteString(brief.CommunicationKit)
+
+	case "progress":
+		sb.WriteString(fmt.Sprintf("【进展汇报】 项目当前成熟度等级为 %s（评分 %d/100）。\n", brief.MaturityLevel, brief.MaturityScore))
+		sb.WriteString(fmt.Sprintf("诊断结论：%s\n\n", brief.MaturityHeadline))
+		if len(brief.NextBestActions) > 0 {
+			sb.WriteString("建议下一步选项：\n")
+			for idx, a := range brief.NextBestActions {
+				sb.WriteString(fmt.Sprintf("[%d] %s\n", idx+1, a))
+			}
+		}
+
+	default: // all
+		sb.WriteString(fmt.Sprintf("您好！项目「%s」当前处于【%s】阶段（成熟度 %d/100）。\n",
+			userCtx.Project.Name, brief.MaturityLevel, brief.MaturityScore))
+		sb.WriteString(fmt.Sprintf("核心研判：%s\n\n", brief.MaturityHeadline))
+		if len(brief.PreemptiveRisks) > 0 {
+			sb.WriteString("⚠️ 关键风险预警：\n")
+			for _, r := range brief.PreemptiveRisks {
+				sb.WriteString(fmt.Sprintf("  • %s\n", r))
+			}
+			sb.WriteString("\n")
+		}
+		if len(brief.NextBestActions) > 0 {
+			sb.WriteString("您可以选择下一步动作：\n")
+			for idx, a := range brief.NextBestActions {
+				sb.WriteString(fmt.Sprintf("  [%d] %s\n", idx+1, a))
+			}
+		}
+	}
+
+	return &CoordinationResult{
+		Status:         StatusAccepted,
+		Intent:         cand.Intent,
+		NaturalReply:   sb.String(),
+		AdvisorBrief:   brief,
+		UpdatedContext: userCtx,
+	}, nil
+}
+
+func (e *CoordinatorEngine) handleSupplementInfo(cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
+	factKey := cand.FilledSlots[intent.SlotFactKey]
+	factVal := cand.FilledSlots[intent.SlotFactValue]
+	rawDoc := cand.FilledSlots[intent.SlotSupplementDoc]
+
+	if userCtx.BlackboardFacts == nil {
+		userCtx.BlackboardFacts = make(map[string]string)
+	}
+
+	summaryKey := ""
+	if factKey != "" && factVal != "" {
+		userCtx.BlackboardFacts[factKey] = factVal
+		summaryKey = fmt.Sprintf("「%s」已更新为「%s」", factKey, factVal)
+		// 同步到工作区 project 字段
+		if factKey == "target_market" {
+			userCtx.Project.TargetMarket = factVal
+		}
+	} else {
+		summaryKey = "已补充新的背景信息"
+	}
+
+	// 若存在真实工作区，写回 blackboard.json 保持持久化
+	if userCtx.WorkDir != "" {
+		bbPath := filepath.Join(userCtx.WorkDir, "blackboard.json")
+		var bb squad.BlackboardState
+		if data, err := os.ReadFile(bbPath); err == nil {
+			_ = json.Unmarshal(data, &bb)
+		}
+		if bb.Fields == nil {
+			bb.Fields = make(map[string]string)
+		}
+		for k, v := range userCtx.BlackboardFacts {
+			bb.Fields[k] = v
+		}
+		if b, err := json.MarshalIndent(bb, "", "  "); err == nil {
+			_ = os.WriteFile(bbPath, b, 0o644)
+		}
+	}
+
+	reply := fmt.Sprintf("已收到并为您记录最新信息：%s。\n这些事实已沉淀至项目黑板，后续论证与核价将直接吸收这些设定。您接下来想：\n[1] 查阅当前最新的项目进展\n[2] 推进进入下一阶段方案论证",
+		summaryKey)
+	if rawDoc != "" && summaryKey == "已补充新的背景信息" {
+		reply = fmt.Sprintf("已为您收录补充材料，并已关联至项目事实黑板。\n在后续的文档修订和阶段演进中，智能体小队将自动引用这部分事实。")
+	}
+
+	return &CoordinationResult{
+		Status:         StatusAccepted,
+		Intent:         cand.Intent,
+		NaturalReply:   reply,
+		AdvisorBrief:   userCtx.LatestAdvisorBrief,
+		UpdatedContext: userCtx,
+	}, nil
+}
+
+func (e *CoordinatorEngine) handleAdvanceStage(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
+	targetStageStr := cand.FilledSlots[intent.SlotTargetStage]
+	targetStage := bizdev.MaturityStage(targetStageStr)
+	if targetStage == "" {
+		targetStage = bizdev.StageV05_Feasibility
+	}
+
+	// 权限与状态机合法性检查
+	if userCtx.Project.CurrentStage == targetStage {
+		return &CoordinationResult{
+			Status:         StatusRejected,
+			Intent:         cand.Intent,
+			RejectReason:   "ALREADY_IN_STAGE",
+			NaturalReply:   fmt.Sprintf("项目目前已经在【%s】阶段中，无需重复推进。您可以吩咐我进行详细论证或查询当前进展。", targetStage),
+			UpdatedContext: userCtx,
+		}, nil
+	}
+
+	if e.bizdevSvc == nil {
+		userCtx.Project.CurrentStage = targetStage
+		userCtx.AvailableActions = ComputeAvailableActions(targetStage, userCtx.User.ProjectRole)
+		return &CoordinationResult{
+			Status:         StatusAccepted,
+			Intent:         cand.Intent,
+			NaturalReply:   fmt.Sprintf("已为您模拟推进到阶段【%s】。", targetStage),
+			UpdatedContext: userCtx,
+		}, nil
+	}
+
+	// 调用底层 L3 调度器执行阶段跃迁
+	stageRes, err := e.bizdevSvc.ExecuteStage(ctx, bizdev.StageRunRequest{
+		Stage:        targetStage,
+		ProjectName:  userCtx.Project.Name,
+		CustomerName: userCtx.Project.CustomerName,
+		DeviceType:   userCtx.Project.DeviceType,
+		IntendedUse:  userCtx.Project.IntendedUse,
+		TargetMarket: userCtx.Project.TargetMarket,
+		Fields:       userCtx.BlackboardFacts,
+		WorkDir:      userCtx.WorkDir,
+	})
+	if err != nil {
+		return &CoordinationResult{
+			Status:         StatusRejected,
+			Intent:         cand.Intent,
+			RejectReason:   err.Error(),
+			NaturalReply:   fmt.Sprintf("阶段推进失败: %v", err),
+			UpdatedContext: userCtx,
+		}, err
+	}
+
+	userCtx.Project.CurrentStage = targetStage
+	userCtx.LatestAdvisorBrief = stageRes.AdvisorBrief
+	userCtx.AvailableActions = ComputeAvailableActions(targetStage, userCtx.User.ProjectRole)
+	if stageRes.WorkDir != "" {
+		userCtx.WorkDir = stageRes.WorkDir
+	}
+
+	artifactPath := ""
+	if stageRes.PrimaryArtifact != nil {
+		artifactPath = filepath.Join(stageRes.PrimaryArtifact.WorkDir, "output.md")
+	}
+
+	reply := fmt.Sprintf("已为您成功推进并完成了【%s】！\n智能体小队已协同完成相应论证与文档沉淀。\n\n💡 最新进展诊断：%s\n建议您可以审阅正式交付文档（%s），或按最新参谋建议开展后续商务洽谈。",
+		stageRes.StageTitle,
+		stageRes.AdvisorBrief.MaturityHeadline,
+		artifactPath,
+	)
+
+	return &CoordinationResult{
+		Status:         StatusAccepted,
+		Intent:         cand.Intent,
+		NaturalReply:   reply,
+		AdvisorBrief:   stageRes.AdvisorBrief,
+		ArtifactPath:   artifactPath,
+		UpdatedContext: userCtx,
+	}, nil
+}
+
+func (e *CoordinatorEngine) handleTriggerTask(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
+	taskKey := cand.FilledSlots[intent.SlotTargetTask]
+	if taskKey == "" {
+		taskKey = "intake"
+	}
+
+	if e.bizdevSvc == nil {
+		return &CoordinationResult{
+			Status:         StatusAccepted,
+			Intent:         cand.Intent,
+			NaturalReply:   fmt.Sprintf("已收到生成【%s】的指令。", taskKey),
+			UpdatedContext: userCtx,
+		}, nil
+	}
+
+	taskRes, err := e.bizdevSvc.ExecuteTask(ctx, bizdev.TaskRunRequest{
+		TaskKey:      taskKey,
+		ProjectName:  userCtx.Project.Name,
+		CustomerName: userCtx.Project.CustomerName,
+		DeviceType:   userCtx.Project.DeviceType,
+		IntendedUse:  userCtx.Project.IntendedUse,
+		TargetMarket: userCtx.Project.TargetMarket,
+		Fields:       userCtx.BlackboardFacts,
+	})
+	if err != nil {
+		return &CoordinationResult{
+			Status:         StatusRejected,
+			Intent:         cand.Intent,
+			RejectReason:   err.Error(),
+			NaturalReply:   fmt.Sprintf("任务执行失败: %v", err),
+			UpdatedContext: userCtx,
+		}, err
+	}
+
+	userCtx.LatestAdvisorBrief = taskRes.AdvisorBrief
+	outPath := filepath.Join(taskRes.WorkDir, "output.md")
+
+	reply := fmt.Sprintf("已为您生成【%s】！\n交付物正文已保存至：%s\n耗时: %v",
+		taskRes.ArtifactTitle, outPath, taskRes.Duration)
+
+	return &CoordinationResult{
+		Status:         StatusAccepted,
+		Intent:         cand.Intent,
+		NaturalReply:   reply,
+		AdvisorBrief:   taskRes.AdvisorBrief,
+		ArtifactPath:   outPath,
+		UpdatedContext: userCtx,
+	}, nil
+}
+
+func (e *CoordinatorEngine) handleCasualChat(userCtx *UserProjectContext) (*CoordinationResult, error) {
+	projName := userCtx.Project.Name
+	if projName == "" {
+		projName = "当前医疗器械研发项目"
+	}
+
+	reply := fmt.Sprintf("您好！我是您的医疗器械立项与商务对接贴身参谋。\n\n针对「%s」，我可以协助您：\n• 随时查询项目成熟度、进展与预见性风险；\n• 补充或调整客户沟通事实与技术指标；\n• 自动起草面向客户负责人的微信/邮件沟通话术；\n• 驱动小队推进方案论证与最终 CDO 报价核算。\n\n请问您现在想从哪里开始？",
+		projName)
+
+	return &CoordinationResult{
+		Status:         StatusAccepted,
+		Intent:         intent.IntentCasualChat,
+		NaturalReply:   reply,
+		AdvisorBrief:   userCtx.LatestAdvisorBrief,
+		UpdatedContext: userCtx,
+	}, nil
+}
diff --git a/internal/coordinator/engine_test.go b/internal/coordinator/engine_test.go
new file mode 100644
index 00000000..bd7082a8
--- /dev/null
+++ b/internal/coordinator/engine_test.go
@@ -0,0 +1,117 @@
+package coordinator_test
+
+import (
+	"context"
+	"testing"
+
+	"chat-agent-system/internal/bizdev"
+	"chat-agent-system/internal/coordinator"
+	"chat-agent-system/internal/intent"
+	"chat-agent-system/internal/squad"
+)
+
+func TestCoordinatorEngine_QueryProgress(t *testing.T) {
+	engine := coordinator.NewCoordinatorEngine(nil)
+
+	userCtx := &coordinator.UserProjectContext{
+		Project: coordinator.ProjectInfo{
+			Name: "便携式掌上超声项目",
+		},
+		LatestAdvisorBrief: &squad.AdvisorBriefing{
+			MaturityScore:    70,
+			MaturityLevel:    "V0.1",
+			MaturityHeadline: "已具备基本产品定义，亟待补充探头频率与目标市场",
+			PreemptiveRisks:  []string{"欧盟CE MDR认证周期较长"},
+			NextBestActions:  []string{"推进进入V0.5可行性论证"},
+			CommunicationKit: "【给客户的建议沟通要点】...",
+		},
+	}
+
+	recRes := &intent.IntentRecognitionResult{
+		TopIntent: &intent.CandidateIntent{
+			Intent: intent.IntentQueryProgress,
+			FilledSlots: map[string]string{
+				intent.SlotQueryTopic: "risk",
+			},
+		},
+	}
+
+	res, err := engine.ProcessIntent(context.Background(), recRes, userCtx)
+	if err != nil {
+		t.Fatalf("process intent failed: %v", err)
+	}
+
+	if res.Status != coordinator.StatusAccepted {
+		t.Errorf("expected status ACCEPTED, got %s", res.Status)
+	}
+	if res.AdvisorBrief == nil {
+		t.Errorf("expected advisor brief in result")
+	}
+}
+
+func TestCoordinatorEngine_SupplementInfo(t *testing.T) {
+	engine := coordinator.NewCoordinatorEngine(nil)
+
+	userCtx := &coordinator.UserProjectContext{
+		Project: coordinator.ProjectInfo{
+			Name: "便携式掌上超声项目",
+		},
+		BlackboardFacts: make(map[string]string),
+	}
+
+	recRes := &intent.IntentRecognitionResult{
+		TopIntent: &intent.CandidateIntent{
+			Intent: intent.IntentSupplementInfo,
+			FilledSlots: map[string]string{
+				intent.SlotFactKey:   "target_market",
+				intent.SlotFactValue: "国内及欧盟CE",
+			},
+		},
+	}
+
+	res, err := engine.ProcessIntent(context.Background(), recRes, userCtx)
+	if err != nil {
+		t.Fatalf("process intent failed: %v", err)
+	}
+
+	if res.Status != coordinator.StatusAccepted {
+		t.Errorf("expected status ACCEPTED, got %s", res.Status)
+	}
+	if userCtx.BlackboardFacts["target_market"] != "国内及欧盟CE" {
+		t.Errorf("expected blackboard target_market updated, got %s", userCtx.BlackboardFacts["target_market"])
+	}
+}
+
+func TestCoordinatorEngine_AdvanceStage(t *testing.T) {
+	engine := coordinator.NewCoordinatorEngine(nil)
+	userCtx := &coordinator.UserProjectContext{
+		Project: coordinator.ProjectInfo{
+			Name:         "超声测试项目",
+			CurrentStage: bizdev.StageV01_Triage,
+		},
+		User: coordinator.UserInfo{
+			ProjectRole: "composer",
+		},
+	}
+
+	recRes := &intent.IntentRecognitionResult{
+		TopIntent: &intent.CandidateIntent{
+			Intent: intent.IntentAdvanceStage,
+			FilledSlots: map[string]string{
+				intent.SlotTargetStage: string(bizdev.StageV05_Feasibility),
+			},
+		},
+	}
+
+	res, err := engine.ProcessIntent(context.Background(), recRes, userCtx)
+	if err != nil {
+		t.Fatalf("process intent failed: %v", err)
+	}
+
+	if res.Status != coordinator.StatusAccepted {
+		t.Errorf("expected status ACCEPTED, got %s", res.Status)
+	}
+	if userCtx.Project.CurrentStage != bizdev.StageV05_Feasibility {
+		t.Errorf("expected stage V0.5_feasibility, got %s", userCtx.Project.CurrentStage)
+	}
+}