package coordinator

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"strconv"
	"strings"
	"time"

	"chat-agent-system/internal/agent"
	"chat-agent-system/internal/app/stageflow"
	"chat-agent-system/internal/ctxmgr"
	"chat-agent-system/internal/docgov"
	"chat-agent-system/internal/intent"
	"chat-agent-system/internal/kb"
	"chat-agent-system/internal/maturity"
	"chat-agent-system/internal/projectinstance"
	"chat-agent-system/internal/squad"
	"chat-agent-system/internal/stream"
)

// CoordinationStatus 协调裁决状态
type CoordinationStatus string

const (
	StatusAccepted              CoordinationStatus = "ACCEPTED"
	StatusRejected              CoordinationStatus = "REJECTED"
	StatusClarificationRequired CoordinationStatus = "CLARIFICATION_REQUIRED"
)

// PendingAction 声明对话层需执行的真实动作（由 Session 持有服务后执行）。
type PendingAction struct {
	Kind     string // docgov.review_approve | docgov.approver_approve | docgov.reject | taskrun.resume | taskrun.restart
	DocID    string
	RunID    string
	WorkDir  string
	Reason   string
	Comment  string
	Rollback docgov.DocumentState
	TaskKey  string
}

// CoordinationResult 协调层给对话层的回执
type CoordinationResult struct {
	Status              CoordinationStatus             `json:"status"`
	Intent              intent.IntentType              `json:"intent"`
	Branch              intent.ResolutionBranch        `json:"branch,omitempty"`
	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"`
	InteractiveCard     *intent.InteractiveCardPayload `json:"interactive_card,omitempty"`
	NextExpectation     *intent.PendingExpectation     `json:"next_expectation,omitempty"`
	ClearExpectation    bool                           `json:"clear_expectation,omitempty"`
	ReplySource         string                         `json:"reply_source,omitempty"` // pi-agent | template
	PendingAction       *PendingAction                 `json:"-"`
	// Task projection for clickable document entry (sync TRIGGER_TASK / adhoc).
	TaskStatus              string `json:"task_status,omitempty"`
	DocID                   string `json:"doc_id,omitempty"`
	ArtifactTitle           string `json:"artifact_title,omitempty"`
	TaskKey                 string `json:"task_key,omitempty"`
	PendingAgentCandidateID int64  `json:"pending_agent_candidate_id,omitempty"`
	PendingChangeReportID   int64  `json:"pending_change_report_id,omitempty"`
	PendingRiskLevel        string `json:"pending_risk_level,omitempty"`
}

// CoordinatorEngine L2 协调引擎
type CoordinatorEngine struct {
	stageTasks      StageTaskRunner
	instSvc         *projectinstance.Service
	assembler       *ContextAssembler
	dialogueBackend agent.Backend
	dataDir         string
	ctxMgr          *ctxmgr.ContextManager
	kbClient        *kb.Client
	impact          ImpactActions
	projectAccess   ProjectAccess
}

// StageTaskRunner is the application owner for ExecuteTask / ExecuteStage.
type StageTaskRunner interface {
	ExecuteTask(ctx context.Context, req stageflow.TaskRunRequest) (*stageflow.TaskRunResult, error)
	ExecuteStage(ctx context.Context, req stageflow.StageRunRequest) (*stageflow.StageRunResult, error)
}

func (e *CoordinatorEngine) SetStageTaskRunner(r StageTaskRunner) {
	if e != nil {
		e.stageTasks = r
	}
}

func (e *CoordinatorEngine) tasks() StageTaskRunner {
	if e == nil {
		return nil
	}
	return e.stageTasks
}

func (e *CoordinatorEngine) SetContextServices(ctxMgr *ctxmgr.ContextManager, kbClient *kb.Client) {
	if e != nil {
		e.ctxMgr = ctxMgr
		e.kbClient = kbClient
	}
}

// SetInstanceService 注入项目工作流实例服务（对话推进与实例门禁合流）。
func (e *CoordinatorEngine) SetInstanceService(svc *projectinstance.Service) {
	if e != nil {
		e.instSvc = svc
	}
}

// SetImpactActions wires read-only impact analysis and confirmed revision proposals.
func (e *CoordinatorEngine) SetImpactActions(a ImpactActions) {
	if e != nil {
		e.impact = a
	}
}

func NewCoordinatorEngine(runner StageTaskRunner) *CoordinatorEngine {
	return &CoordinatorEngine{
		stageTasks: runner,
		assembler:  NewContextAssembler(),
	}
}

// NewCoordinatorEngineWithDialogue 注入对话 LLM 后端（Phase A：CASUAL / AMBIGUOUS）
func NewCoordinatorEngineWithDialogue(runner StageTaskRunner, dialogueBackend agent.Backend, dataDir string) *CoordinatorEngine {
	return &CoordinatorEngine{
		stageTasks:      runner,
		assembler:       NewContextAssembler(),
		dialogueBackend: dialogueBackend,
		dataDir:         dataDir,
	}
}

// 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),
		}
	}

	// 交互卡片 TTL 轮次消退与生命周期清理
	if userCtx.InteractiveCard != nil {
		_ = ApplyContextUpdate(userCtx, ContextUpdate{ExpectedVersion: userCtx.Version, TickInteractive: true})
	}
	if userCtx.PendingExpectation != nil && !userCtx.PendingExpectation.ExpiresAt.IsZero() && time.Now().After(userCtx.PendingExpectation.ExpiresAt) {
		userCtx.applyPending(nil)
	}

	top := recRes.TopIntent
	if top == nil {
		top = &intent.CandidateIntent{
			Intent:     intent.IntentCasualChat,
			Confidence: 1.0,
		}
	}

	// Phase 5：RankedFrames 写/读冲突二次门禁
	if intent.RankedFrameConflictRequiresClarification(recRes) {
		msg := "检测到查询与写操作意图接近，为避免误执行，请明确您是要查询状态，还是要执行变更操作？"
		return &CoordinationResult{
			Status:              StatusClarificationRequired,
			Intent:              top.Intent,
			Branch:              recRes.Branch,
			ClarificationPrompt: msg,
			NaturalReply:        msg,
			UpdatedContext:      userCtx,
		}, nil
	}

	// Phase 5：有限多意图计划（query+query / expectation_plus_new）
	if recRes.IntentPlan != nil && intent.CurrentFeatureFlags().MultiIntentEnabled {
		if planRes, planErr := e.executeIntentPlan(ctx, recRes, userCtx); planRes != nil {
			return planRes, planErr
		}
	}

	// Phase 5：V2 灰度路由（intent_v2_decision 开启且档位允许时对齐 V2 帧）
	if effective := intent.ResolveEffectiveIntent(recRes); effective != top.Intent {
		top = &intent.CandidateIntent{
			Intent:                effective,
			Confidence:            top.Confidence,
			Branch:                top.Branch,
			FilledSlots:           top.FilledSlots,
			MissingSlots:          top.MissingSlots,
			Reasoning:             top.Reasoning + " (v2_decision)",
			ClarificationQuestion: top.ClarificationQuestion,
			MatchedOption:         top.MatchedOption,
			PatchSlots:            top.PatchSlots,
			IsDecline:             top.IsDecline,
		}
		recRes.TopIntent = top
	}

	streamer := stream.FromContext(ctx)
	if streamer != nil {
		streamer.EmitStatus(string(top.Intent), string(recRes.Branch), string(userCtx.Project.CurrentStage), fmt.Sprintf("意图判定: %s (置信度: %.0f%%)", top.Intent, top.Confidence*100), top.FilledSlots)
	}
	logRouteDecision(ctx, recRes, RouteIntent(top.Intent, TaskProfile{}))

	// 1. 若缺少核心槽位且需定向澄清（优先于模糊咨询，避免缺槽追问被参谋兜底截断）
	if recRes.RequiresClarifying && top.ClarificationQuestion != "" {
		return &CoordinationResult{
			Status:              StatusClarificationRequired,
			Intent:              top.Intent,
			Branch:              recRes.Branch,
			ClarificationPrompt: top.ClarificationQuestion,
			NaturalReply:        top.ClarificationQuestion,
			UpdatedContext:      userCtx,
		}, nil
	}

	// 2. 若为分支 3 (模糊/分忧引导)，触发参谋主动分析与建议（Phase A：优先真实 LLM）
	if recRes.Branch == intent.BranchAmbiguousFallback {
		res, err := e.handleAmbiguousConsult(ctx, top, userCtx, recRes.RawInput)
		if err == nil && res != nil {
			e.enrichAdvisorBriefWithCases(ctx, res.AdvisorBrief, userCtx, top.FilledSlots)
		}
		return res, err
	}

	// 3. 根据候选意图执行分支
	var coordRes *CoordinationResult
	var coordErr error

	switch top.Intent {
	case intent.IntentDeclineExpectation:
		coordRes, coordErr = e.handleDeclineExpectation(userCtx)

	case intent.IntentQueryProgress:
		coordRes, coordErr = e.handleQueryProgress(ctx, top, userCtx, recRes.RawInput)

	case intent.IntentSupplementInfo:
		coordRes, coordErr = e.handleSupplementInfo(top, userCtx)

	case intent.IntentAdvanceStage:
		coordRes, coordErr = e.handleAdvanceStage(ctx, top, userCtx)

	case intent.IntentTriggerTask:
		coordRes, coordErr = e.handleTriggerTask(ctx, top, userCtx)

	case intent.IntentTriggerAdhocTask:
		coordRes, coordErr = e.handleTriggerAdhocTask(ctx, top, userCtx, recRes.RawInput)

	case intent.IntentCasualChat:
		coordRes, coordErr = e.handleCasualChat(ctx, userCtx, recRes.RawInput)

	case intent.IntentSecurityForbidden:
		coordRes, coordErr = e.handleSecurityForbidden(userCtx)

	case intent.IntentDocGovReviewReject, intent.IntentDocGovFinalReject:
		coordRes, coordErr = e.handleDocGovReject(ctx, top, userCtx)

	case intent.IntentQueryRejectReason:
		coordRes, coordErr = e.handleQueryRejectReason(ctx, top, userCtx)

	case intent.IntentDocGovReviewApprove, intent.IntentDocGovFinalApprove:
		coordRes, coordErr = e.handleDocGovApprove(ctx, top, userCtx)

	case intent.IntentDocGovClaim:
		coordRes, coordErr = e.handleDocGovClaim(ctx, top, userCtx)

	case intent.IntentDocGovSubmitReview:
		coordRes, coordErr = e.handleDocGovSubmitReview(ctx, top, userCtx)

	case intent.IntentDocGovProposalDecide:
		coordRes, coordErr = e.handleDocGovProposalDecide(ctx, top, userCtx)

	case intent.IntentQueryRegulations:
		coordRes, coordErr = e.handleQueryRegulations(ctx, top, userCtx)

	case intent.IntentQuerySimilarCases:
		coordRes, coordErr = e.handleQuerySimilarCases(ctx, top, userCtx)

	case intent.IntentQueryUserRights:
		coordRes, coordErr = e.handleQueryUserRights(ctx, top, userCtx)

	case intent.IntentSwitchWorkflow:
		coordRes, coordErr = e.handleSwitchWorkflow(ctx, top, userCtx)

	case intent.IntentTriggerWorkflow:
		coordRes, coordErr = e.handleTriggerWorkflow(ctx, top, userCtx)

	case intent.IntentQueryWorkflowStatus:
		coordRes, coordErr = e.handleQueryWorkflowStatus(ctx, top, userCtx)

	case intent.IntentQueryDocStatus:
		coordRes, coordErr = e.handleQueryDocStatus(ctx, top, userCtx)

	case intent.IntentHelpCapabilities:
		coordRes, coordErr = e.handleHelpCapabilities(ctx, top, userCtx)

	case intent.IntentUnsupportedAction:
		coordRes, coordErr = e.handleUnsupportedAction(ctx, top, userCtx)

	case intent.IntentRunStatusQuery:
		coordRes, coordErr = e.handleRunStatusQuery(ctx, top, userCtx)

	case intent.IntentRunResume:
		coordRes, coordErr = e.handleRunResume(ctx, top, userCtx)

	case intent.IntentRunRestart:
		coordRes, coordErr = e.handleRunRestart(ctx, top, userCtx)

	case intent.IntentImpactAnalyze:
		coordRes, coordErr = e.handleImpactAnalyze(ctx, top, userCtx, recRes.RawInput)

	case intent.IntentRevisePropose:
		coordRes, coordErr = e.handleRevisePropose(ctx, top, userCtx, recRes.RawInput)

	default:
		nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
		coordRes = &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          top.Intent,
			Branch:          recRes.Branch,
			NaturalReply:    "我已收到您的指示。针对当前项目，请问需要我为您查询进展、补充技术事实，还是推进方案论证？随时吩咐我。",
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
		}
	}

	if coordErr == nil && coordRes != nil {
		e.enrichAdvisorBriefWithCases(ctx, coordRes.AdvisorBrief, userCtx, top.FilledSlots)
	}

	return coordRes, coordErr
}

// enrichAdvisorBriefWithCases 结合上下文与意图槽位检索相似标杆案例并注入参谋锦囊
func (e *CoordinatorEngine) enrichAdvisorBriefWithCases(ctx context.Context, brief *squad.AdvisorBriefing, userCtx *UserProjectContext, slots map[string]string) {
	if brief == nil || e.ctxMgr == nil {
		return
	}
	ctxMgr := e.ctxMgr
	if ctxMgr == nil {
		return
	}

	// 构造搜索语句
	queryParts := []string{userCtx.Project.DeviceType, userCtx.Project.IntendedUse}
	if topic, ok := slots[intent.SlotQueryTopic]; ok && topic != "" {
		queryParts = append(queryParts, topic)
	}
	query := strings.TrimSpace(strings.Join(queryParts, " "))
	if query == "" {
		query = userCtx.Project.Name
	}
	if query == "" {
		return
	}

	cases, err := ctxMgr.SearchSimilarCases(ctx, ctxmgr.CaseSearchOptions{
		Query:    query,
		Limit:    2,
		MinScore: 0.10,
	})
	if err != nil || len(cases) == 0 {
		return
	}

	for _, c := range cases {
		brief.RecommendedCases = append(brief.RecommendedCases, squad.AdvisorCaseRecommendation{
			DocID:           c.DocID,
			ProjectName:     c.ProjectName,
			TaskKey:         c.TaskKey,
			ArtifactTitle:   c.ArtifactTitle,
			SectionTitle:    c.SectionTitle,
			SummarySnippet:  c.SummarySnippet,
			KeyRegulations:  c.KeyRegulations,
			SimilarityScore: c.SimilarityScore,
			ApprovedAt:      c.ApprovedAt,
		})
	}
}

// handleDeclineExpectation 处理用户暂缓或取消上轮建议 (分支 1 放弃)
func (e *CoordinatorEngine) handleDeclineExpectation(userCtx *UserProjectContext) (*CoordinationResult, error) {
	projName := userCtx.Project.Name
	if projName == "" {
		projName = "当前项目"
	}
	userCtx.applyPending(nil)
	if userCtx.InteractiveCard != nil {
		userCtx.dismissCard("cancelled")
	}

	reply := fmt.Sprintf("收到，听您的！那我们先不急着推进。\n针对「%s」，您手头还有哪些细节、技术顾虑或商务考量想先聊聊？我随时待命为您解答。", projName)

	return &CoordinationResult{
		Status:           StatusAccepted,
		Intent:           intent.IntentDeclineExpectation,
		Branch:           intent.BranchExpectationHit,
		NaturalReply:     reply,
		UpdatedContext:   userCtx,
		ClearExpectation: true,
	}, nil
}

// handleAmbiguousConsult 处理用户犹豫或征询建议 (分支 3 模糊分忧)
func (e *CoordinatorEngine) handleAmbiguousConsult(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext, rawInput string) (*CoordinationResult, error) {
	currentStage := userCtx.Project.CurrentStage
	projName := userCtx.Project.Name
	if projName == "" {
		projName = "当前项目"
	}

	// 只在低置信度的模糊咨询里，才用关键词改走测试分析。高置信度保持原意图。
	if cand.Confidence < 0.6 && (strings.Contains(rawInput, "测试") || strings.Contains(rawInput, "验证") || strings.Contains(rawInput, "型检") ||
		strings.Contains(rawInput, "难点") || strings.Contains(rawInput, "注意") || strings.Contains(rawInput, "比较难") ||
		strings.Contains(rawInput, "方案")) {
		if cand.FilledSlots == nil {
			cand.FilledSlots = make(map[string]string)
		}
		cand.FilledSlots[intent.SlotQueryTopic] = "testing_analysis"
		return e.handleQueryProgress(ctx, cand, userCtx, rawInput)
	}

	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("完全理解您想再掂量一下。针对「%s」目前的节点，我帮您快速对照一下：\n\n", projName))

	if currentStage == maturity.StageV01_Triage {
		sb.WriteString("• 若推进 V0.5（方案成型与法规对齐）：\n")
		sb.WriteString("  我可帮您梳理初步架构与注册分类路径，并预估型检成本，便于与客户深入沟通；\n")
		sb.WriteString("• 若先放一放 / 多做调研：\n")
		sb.WriteString("  可先补齐预算、目标市场或使用场景等信息，降低后续返工风险。\n\n")
		sb.WriteString("💡 如果您接下来更希望先有一份可审阅的材料，我可以先整理一版 V0.5 方案框架与法规路径；节奏仍由您决定。\n\n")
		sb.WriteString("您更倾向于：\n")
		sb.WriteString("[1] 先做 V0.5 方案框架（可直接回复“好”或“1”）\n")
		sb.WriteString("[2] 先说明您当前最关心的细节，我做针对性分析")
	} else {
		sb.WriteString("当前各项工作进展平稳。您可以把零散想法随时告诉我，我来帮您沉淀；时机成熟时，再一起推进下一阶段也完全可以。")
	}

	reply := sb.String()
	source := ReplySourceTemplate
	if llmReply, llmSource := e.generateDialogueReply(ctx, rawInput, userCtx); llmReply != "" {
		reply = llmReply
		source = llmSource
	}

	nextExp := BuildNextExpectation(currentStage, projName)
	// 路由层：复杂自由任务画像命中时，先给即时初答，再附升级建议（复用挂起期望机制，含每会话冷却）
	reply, nextExp = maybeAttachUpgradeHint(rawInput, userCtx, reply, nextExp)
	userCtx.applyPending(nextExp)

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          intent.BranchAmbiguousFallback,
		NaturalReply:    reply,
		AdvisorBrief:    userCtx.LatestAdvisorBrief,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
		ReplySource:     source,
	}, nil
}

func (e *CoordinatorEngine) handleQueryProgress(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext, rawInput string) (*CoordinationResult, error) {
	brief := userCtx.LatestAdvisorBrief
	topic := cand.FilledSlots[intent.SlotQueryTopic]
	nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	// 1. 若为测试方案/难点/验证咨询，直接调取测试经理与参谋专业知识库解答
	if topic == "testing_analysis" {
		if llmReply, llmSource := e.generateDialogueReply(ctx, rawInput, userCtx); llmReply != "" {
			return &CoordinationResult{
				Status:          StatusAccepted,
				Intent:          cand.Intent,
				Branch:          cand.Branch,
				NaturalReply:    llmReply,
				AdvisorBrief:    brief,
				UpdatedContext:  userCtx,
				NextExpectation: nextExp,
				ReplySource:     llmSource,
			}, nil
		}

		projName := userCtx.Project.Name
		if projName == "" || projName == "医疗器械研发项目" {
			projName = "肌骨超声AI辅助诊断系统"
		}

		greet := strings.TrimSpace(userCtx.User.Name)
		if greet == "" {
			greet = "您好"
		} else {
			greet += "，您好"
		}
		var sb strings.Builder
		sb.WriteString(fmt.Sprintf("%s！针对「%s」的系统验证方案（SVP）与型式检验要求，我为您梳理以下核心难点项目与特别注意事项：\n\n", greet, projName))
		sb.WriteString("### 一、 核心测试难点项目\n\n")
		sb.WriteString("1. **声学输出安全与探头表面温升极限（GB 9706.237-2020）**\n")
		sb.WriteString("   • **难点分析**：肌骨超声常需配合高频线阵探头（10-18MHz）进行浅表滑膜微血流彩色多普勒（CDFI/Power Doppler）检测。连续高占空比发射脉冲会导致探头声透镜声吸收发热。根据强标要求，探头施加于人体的表面温升严禁超过 **41℃**，同时机械指数（MI）需严格低于 1.9，热指数（TIS/TIB）需低于 1.0。\n")
		sb.WriteString("   • **试验考量**：需在 33℃ 恒温仿生水槽中进行连续 30 分钟满功率复合工况热电偶布点实测，温控算法防呆测试难度较高。\n\n")
		sb.WriteString("2. **高频浅表微小解剖量测公差与体模标定（GB 10188 / KS107BG 仿组织体模）**\n")
		sb.WriteString("   • **难点分析**：肌腱撕裂缝隙及滑膜增厚量测精度要求达到 **±0.3mm 或 ±3%**。在 1~3cm 浅表盲区内，探头晶片近场声束干涉容易造成线靶伪影或横向展宽。\n")
		sb.WriteString("   • **试验考量**：对组织仿生体模内部靶群的纵向、横向分辨力及几何位置示值误差进行多批次盲态复测，对探头声阻抗匹配层与声透镜一致性要求极其苛刻。\n\n")
		sb.WriteString("3. **AI 算法病灶识别与量化分割的泛化鲁棒性（YY/T 0664 / 软件性能测试）**\n")
		sb.WriteString("   • **难点分析**：超声影像固有的斑点噪声（Speckle Noise）、声影及不同患者皮下脂肪厚度差异极大。滑膜边界 Dice 系数（≥0.85）在骨皮质高回声边缘极易出现伪阳性粘连；血流微信号半定量分级在探头晃动时易出现运动伪影误判。\n")
		sb.WriteString("   • **试验考量**：需要建立多中心、不同机型/探头采集的独立盲测黄金数据集（由 3 名资深超声主任医师独立背对背标定一致性），验证测试集与训练集严禁污染交叉。\n\n")
		sb.WriteString("### 二、 需要特别注意的关键地方\n\n")
		sb.WriteString("• **标准体模计量有效期与测试环境温湿度**：仿生超声体模（如 KS107BG）的声速（标准 1540 m/s）对环境温度极为敏感，必须在 **23℃ ± 2℃** 严格恒温实验室实施，且体模必须在有效计量标定期内，否则测距误差将产生系统性偏移；\n")
		sb.WriteString("• **电磁兼容（EMC GB 9706.102-2021）抗扰度储备**：高频微弱回波信号接收通道抗射频电磁场辐射敏感度高，测试方案中需提前验证探头线缆双层屏蔽接地与机箱屏蔽缝隙，避免正式型检时辐射发射（RE）超标返工；\n")
		sb.WriteString("• **DICOM 与数据脱敏合规**：软件系统测试中，所有导出样本、测试影像的患者个人隐私标识（PII）脱敏规则需执行 100% 覆盖率验证；\n")
		sb.WriteString("• **极端异常输入与容错安全防呆**：探头带电热插拔、探头声透镜声胶脱落阻抗异常检测、长时间无操作探头自动降频防发热休眠逻辑，均需设计破坏性负向测试用例。\n\n")
		sb.WriteString("💡 **建议行动**：若您需要，我可以为您起草该模块对应的《系统验证方案 (SVP) 关键测试用例矩阵》，列出详细的测试条件、前置配置与合格判据。")

		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    sb.String(),
			AdvisorBrief:    brief,
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
			ReplySource:     ReplySourceTemplate,
		}, nil
	}

	// 2. 若为特定技术/架构/功耗方案咨询，直接调取参谋专业知识库解答，不强依赖阶段简报
	if topic == "technical_design" {
		var sb strings.Builder
		sb.WriteString(fmt.Sprintf("关于「%s」的技术与系统架构考量，我为您梳理以下核心要点：\n", userCtx.Project.Name))
		sb.WriteString("• 供电与功耗设计：建议选用高能效前端模拟芯片与智能休眠调度，兼顾便携连续工作时间与温升控制；\n")
		sb.WriteString("• 电气安全与标准：设备需符合 GB 9706.1-2020 通用安全与医用电气专项要求，重点评估外壳防护等级与绝缘耐压；\n")
		sb.WriteString("• 供应链选型：关键芯片与传感器优先考虑国内高成熟度元器件，缩短备料周期与型检验证周期。\n\n")
		sb.WriteString("这项考量已收录。进入方案成型（V0.5）时，我会作为核心约束一并带入论证。")

		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    sb.String(),
			AdvisorBrief:    brief,
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
		}, nil
	}

	// 2. 无参谋简报的降级应答（修复：曾直接返回 V0.1 推销模板导致答非所问）
	//    2a. 优先真实对话 LLM 结合项目上下文直接回答本轮问题（Phase A 机制延伸至 QUERY_PROGRESS 降级路径）；
	//    2b. LLM 不可用时，基于黑板事实合成 intake 基准简报，仍按查询主题给出实质研判，末尾附轻量摸底引导。
	synthesized := false
	replySource := ""
	if brief == nil {
		if llmReply, llmSource := e.generateDialogueReply(ctx, rawInput, userCtx); llmReply != "" {
			return &CoordinationResult{
				Status:          StatusAccepted,
				Intent:          cand.Intent,
				Branch:          cand.Branch,
				NaturalReply:    llmReply,
				UpdatedContext:  userCtx,
				NextExpectation: nextExp,
				ReplySource:     llmSource,
			}, nil
		}
		brief = synthesizeBaselineBrief(userCtx)
		synthesized = true
		replySource = ReplySourceTemplate
	}

	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))
			}
		}
	}

	// 3. 合成简报场景：先给出实质回答，再轻量附上摸底引导（保留引导、不再答非所问、不强推）
	if synthesized {
		sb.WriteString("\n\n💡 说明：项目尚未启动过任何交付任务，以上研判基于行业基准假设。")
		sb.WriteString("若希望沉淀更精准的第一版立项画像与沟通话术，您可以吩咐我「生成一版 V0.1 需求收集表（立项摸底）」，或直接补充器械类型、目标市场、预算等关键细节。")
	}

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    sb.String(),
		AdvisorBrief:    brief,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
		ReplySource:     replySource,
	}, nil
}

// synthesizeBaselineBrief 在用户尚未执行过任何阶段/任务（无持久化参谋简报）时，
// 基于黑板事实与项目信息合成 intake 级基准参谋简报，确保查询类意图始终有实质研判可用。
func synthesizeBaselineBrief(userCtx *UserProjectContext) *squad.AdvisorBriefing {
	fields := make(map[string]string)
	for k, v := range userCtx.BlackboardFacts {
		fields[k] = v
	}
	fields["project_name"] = userCtx.Project.Name
	fields["customer_name"] = userCtx.Project.CustomerName
	if userCtx.Project.DeviceType != "" {
		fields["device_type"] = userCtx.Project.DeviceType
	}
	if userCtx.Project.IntendedUse != "" {
		fields["intended_use"] = userCtx.Project.IntendedUse
	}
	if userCtx.Project.TargetMarket != "" {
		fields["target_market"] = userCtx.Project.TargetMarket
	}
	return squad.ExtractAdvisorBriefing("intake", "", fields)
}

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.applyBlackboard(factKey, factVal)
		summaryKey = fmt.Sprintf("「%s」已更新为「%s」", factKey, factVal)
		if factKey == "target_market" {
			userCtx.Project.TargetMarket = factVal
		}
	} else {
		summaryKey = "已补充新的背景信息"
	}

	streamer := stream.FromContext(context.Background())
	if streamer != nil {
		streamer.EmitStatus(string(cand.Intent), string(cand.Branch), string(userCtx.Project.CurrentStage), fmt.Sprintf("已吸收最新事实设定：%s", summaryKey), cand.FilledSlots)
	}

	// 持久化到 blackboard.json
	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)
		}
	}

	nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("已收到并为您记录最新信息：%s。\n", summaryKey))
	sb.WriteString("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。\n\n")
	sb.WriteString(fmt.Sprintf("针对「%s」，我为您梳理了接下来的推进选项：\n", userCtx.Project.Name))
	for idx, opt := range nextExp.Options {
		recMark := ""
		if idx == 0 {
			recMark = "（推荐，可直接回复“好”或“1”）"
		}
		sb.WriteString(fmt.Sprintf("[%s] %s %s\n", opt.OptionID, opt.Title, recMark))
	}

	if rawDoc != "" && summaryKey == "已补充新的背景信息" {
		sb.Reset()
		sb.WriteString("已收录补充材料，并关联到项目事实黑板。\n后续文档修订与阶段推进时，我会自动引用这部分事实。")
	}

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    sb.String(),
		AdvisorBrief:    userCtx.LatestAdvisorBrief,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
	}, nil
}

func (e *CoordinatorEngine) handleAdvanceStage(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	if e.instSvc != nil && e.instSvc.Available() && userCtx != nil && userCtx.Project.ID != "" {
		projectID, parseErr := strconv.ParseInt(userCtx.Project.ID, 10, 64)
		userID, userErr := strconv.ParseInt(userCtx.User.ID, 10, 64)
		if parseErr == nil && userErr == nil && projectID > 0 && userID > 0 {
			isCreator := userCtx.Project.CreatorUserID > 0 && userID == userCtx.Project.CreatorUserID
			settings, settingsErr := e.instSvc.GetSettings(ctx, projectID, userID, isCreator)
			hasLiveGovernance := settingsErr == nil && settings != nil && settings.LiveInstance != nil &&
				settings.LiveInstance.Status != projectinstance.InstanceCompleted &&
				settings.LiveInstance.Status != "terminated"

			if hasLiveGovernance {
				if !isCreator {
					return &CoordinationResult{
						Status:         StatusRejected,
						Intent:         cand.Intent,
						Branch:         cand.Branch,
						RejectReason:   projectinstance.ErrForbiddenNotCreator.Error(),
						NaturalReply:   "只有项目创建者可以确认推进工作流阶段。",
						UpdatedContext: userCtx,
					}, projectinstance.ErrForbiddenNotCreator
				}
				res, _, advErr := e.tryAdvanceWorkflowInstance(ctx, projectID, userID)
				if advErr != nil {
					return &CoordinationResult{
						Status:         StatusRejected,
						Intent:         cand.Intent,
						Branch:         cand.Branch,
						RejectReason:   advErr.Error(),
						NaturalReply:   fmt.Sprintf("阶段推进未通过门禁：%v", advErr),
						UpdatedContext: userCtx,
					}, advErr
				}
				return res, nil
			}

			if isCreator {
				if res, handled, advErr := e.tryAdvanceWorkflowInstance(ctx, projectID, userID); handled {
					if advErr != nil {
						return &CoordinationResult{
							Status:         StatusRejected,
							Intent:         cand.Intent,
							Branch:         cand.Branch,
							RejectReason:   advErr.Error(),
							NaturalReply:   fmt.Sprintf("阶段推进未通过门禁：%v", advErr),
							UpdatedContext: userCtx,
						}, advErr
					}
					return res, nil
				}
			}
		}
	}

	targetStageStr := cand.FilledSlots[intent.SlotTargetStage]
	targetStage := maturity.MaturityStage(targetStageStr)
	if targetStage == "" {
		targetStage = maturity.StageV05_Feasibility
	}

	streamer := stream.FromContext(ctx)
	if streamer != nil {
		streamer.EmitPhase("stage_transition", fmt.Sprintf("准备推进项目成熟度阶段至【%s】...", targetStage), "coordinator", 0, 0, 0)
	}

	// 1. 若携带补丁槽位 (例如 "好，但目标市场改成欧洲CE")，先行持久化更新
	patchSummary := ""
	if len(cand.PatchSlots) > 0 {
		var patches []string
		for k, v := range cand.PatchSlots {
			userCtx.applyBlackboard(k, v)
			patches = append(patches, fmt.Sprintf("%s=%s", k, v))
			if k == "target_market" {
				userCtx.Project.TargetMarket = v
			}
		}
		patchSummary = strings.Join(patches, ", ")

		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 cand.PatchSlots {
				bb.Fields[k] = v
			}
			if b, err := json.MarshalIndent(bb, "", "  "); err == nil {
				_ = os.WriteFile(bbPath, b, 0o644)
			}
		}
	}

	// 2. 状态机合法性检查
	if userCtx.Project.CurrentStage == targetStage {
		return &CoordinationResult{
			Status:         StatusRejected,
			Intent:         cand.Intent,
			Branch:         cand.Branch,
			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.tasks() == nil {
		userCtx.Project.CurrentStage = targetStage
		userCtx.AvailableActions = ComputeAvailableActions(targetStage, userCtx.User.ProjectRole)
		nextExp := BuildNextExpectation(targetStage, userCtx.Project.Name)
		userCtx.applyPending(nextExp)

		reply := fmt.Sprintf("已为您模拟推进到阶段【%s】。", targetStage)
		if patchSummary != "" {
			reply = fmt.Sprintf("已为您吸收最新设定（%s），并模拟推进到阶段【%s】。", patchSummary, targetStage)
		}
		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    reply,
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
		}, nil
	}

	// 3. 调用底层 L3 调度器执行阶段跃迁
	stageRes, err := e.tasks().ExecuteStage(ctx, stageflow.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,
			Branch:         cand.Branch,
			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")
	}

	nextExp := BuildNextExpectation(targetStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	var sb strings.Builder
	if patchSummary != "" {
		sb.WriteString(fmt.Sprintf("已为您吸收最新设定（%s），并成功推进并完成了【%s】！\n", patchSummary, stageRes.StageTitle))
	} else {
		sb.WriteString(fmt.Sprintf("已为您成功推进并完成了【%s】！\n", stageRes.StageTitle))
	}
	sb.WriteString("相关论证与文档已沉淀完成。\n\n")
	sb.WriteString(fmt.Sprintf("💡 最新进展：%s\n", stageRes.AdvisorBrief.MaturityHeadline))
	sb.WriteString(fmt.Sprintf("建议您审阅交付文档（%s），或按下方建议推进后续洽谈。\n\n", artifactPath))
	sb.WriteString("可选下一步：\n")
	for idx, opt := range nextExp.Options {
		recMark := ""
		if idx == 0 {
			recMark = "（推荐，可直接回复“好”或“1”）"
		}
		sb.WriteString(fmt.Sprintf("[%s] %s %s\n", opt.OptionID, opt.Title, recMark))
	}

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    sb.String(),
		AdvisorBrief:    stageRes.AdvisorBrief,
		ArtifactPath:    artifactPath,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
	}, nil
}

func (e *CoordinatorEngine) handleTriggerTask(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	taskKey := cand.FilledSlots[intent.SlotTargetTask]
	if taskKey == "" {
		taskKey = "intake"
	}

	nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	if e.tasks() == nil {
		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    fmt.Sprintf("已收到生成【%s】的指令。", taskKey),
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
		}, nil
	}

	var projectID, userID int64
	if userCtx.Project.ID != "" {
		projectID = parseDecimalID(userCtx.Project.ID)
	}
	if userCtx.User.ID != "" {
		userID = parseDecimalID(userCtx.User.ID)
	}

	taskRes, err := e.tasks().ExecuteTask(ctx, stageflow.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,
		ProjectID:    projectID,
		UserID:       userID,
	})
	if err != nil {
		if errors.Is(err, docgov.ErrDocumentBusy) {
			msg := "该文档正在由项目助手生成或他人编辑中，请稍后再发起更新。您可以先继续对话或处理其他文档。"
			if taskRes != nil && taskRes.ErrorReason != "" {
				msg = taskRes.ErrorReason + "。您可以先继续对话或处理其他文档。"
			}
			return &CoordinationResult{
				Status:         StatusRejected,
				Intent:         cand.Intent,
				Branch:         cand.Branch,
				RejectReason:   err.Error(),
				NaturalReply:   msg,
				UpdatedContext: userCtx,
			}, nil
		}
		if errors.Is(err, docgov.ErrDocumentLocked) {
			return &CoordinationResult{
				Status:         StatusRejected,
				Intent:         cand.Intent,
				Branch:         cand.Branch,
				RejectReason:   err.Error(),
				NaturalReply:   "该文档已进入审核/批准锁定状态，无法自动覆写正文。如需修订请走驳回解锁或变更提案流程。",
				UpdatedContext: userCtx,
			}, nil
		}
		return &CoordinationResult{
			Status:         StatusRejected,
			Intent:         cand.Intent,
			Branch:         cand.Branch,
			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, taskStatus := formatTriggerTaskReply(taskRes, outPath)

	res := &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    reply,
		AdvisorBrief:    taskRes.AdvisorBrief,
		ArtifactPath:    outPath,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
		TaskStatus:      taskStatus,
		TaskKey:         taskRes.TaskKey,
		ArtifactTitle:   taskRes.ArtifactTitle,
	}
	attachTaskRunProjection(res, taskRes)
	return res, nil
}

// formatTriggerTaskReply builds sync coordinator copy for a TaskRunResult.
// Pending high-risk candidates must not claim "正文已保存 / 已完成".
func formatTriggerTaskReply(taskRes *stageflow.TaskRunResult, outPath string) (reply string, taskStatus string) {
	if taskRes == nil {
		return "任务执行失败。", stageflow.TaskStatusFailed
	}
	taskStatus = taskRes.TerminalStatus()
	if taskRes.AwaitsAgentConfirmation() {
		return taskRes.CompletionSummary(), taskStatus
	}
	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("已为您自适应规划并完成生成【%s】！\n交付物正文已保存至：%s\n耗时: %v\n",
		taskRes.ArtifactTitle, outPath, taskRes.Duration))
	if taskRes.AdvisorBrief != nil && len(taskRes.AdvisorBrief.BaselineAssumptions) > 0 {
		sb.WriteString("\n📌 预设基准假设（已融入方案，您可随时修正）：\n")
		for _, a := range taskRes.AdvisorBrief.BaselineAssumptions {
			sb.WriteString(fmt.Sprintf("  • %s\n", a))
		}
	}
	return sb.String(), taskStatus
}

func attachTaskRunProjection(res *CoordinationResult, taskRes *stageflow.TaskRunResult) {
	if res == nil || taskRes == nil {
		return
	}
	if taskRes.DocRecord != nil {
		res.DocID = taskRes.DocRecord.DocID
	}
	if taskRes.AwaitsAgentConfirmation() {
		res.PendingAgentCandidateID = taskRes.PendingAgentCandidateID
		res.PendingChangeReportID = taskRes.PendingChangeReportID
		res.PendingRiskLevel = taskRes.PendingRiskLevel
	}
}

// handleTriggerAdhocTask 处理自由任务升级确认（路由层 R1 升级建议的兑现路径）：
// 基于任务简报组装特设小队，走 planAutonomousAdhoc 自主规划 + TaskGov 全量治理
// （预算账本 / 执行轨迹 / 重复识别 / 归档锁定 / 质量门禁修复闭环）。
func (e *CoordinatorEngine) handleTriggerAdhocTask(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext, rawInput string) (*CoordinationResult, error) {
	brief := cand.FilledSlots[intent.SlotTaskBrief]
	if brief == "" {
		brief = rawInput
	}
	title := deriveAdhocTitle(brief)
	taskKey := sanitizeAdhocTaskKey(title)

	nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	if e.tasks() == nil {
		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    fmt.Sprintf("已收到自由任务《%s》的升级指令（当前环境未接入小队服务，简报已登记）。\n任务简报: %s", title, brief),
			UpdatedContext:  userCtx,
			NextExpectation: nextExp,
		}, nil
	}

	var projectID, userID int64
	if userCtx.Project.ID != "" {
		projectID = parseDecimalID(userCtx.Project.ID)
	}
	if userCtx.User.ID != "" {
		userID = parseDecimalID(userCtx.User.ID)
	}

	if st := stream.FromContext(ctx); st != nil {
		st.EmitPhase("squad_assembly", fmt.Sprintf("正在为自由任务《%s》组建特设智能体小队（动态规划 + 预算管控 + 归档锁定）...", title), "leader", 0, 0, 5)
	}

	// 任务简报材料化：作为首要输入材料注入工作区（context/materials_text/task_brief.md），
	// 供 organizer 专员在容器内直接读到用户原始诉求（否则首步将报"无材料可整理"）
	briefMaterial := stageflow.MaterialInput{
		Filename: "task_brief.md",
		Content:  []byte(fmt.Sprintf("# 任务简报（用户原始诉求，权威等级：primary_evidence）\n\n%s\n", brief)),
	}

	taskRes, err := e.tasks().ExecuteTask(ctx, stageflow.TaskRunRequest{
		TaskKey:      taskKey,
		Title:        title,
		ProjectName:  userCtx.Project.Name,
		CustomerName: userCtx.Project.CustomerName,
		DeviceType:   userCtx.Project.DeviceType,
		IntendedUse:  userCtx.Project.IntendedUse,
		TargetMarket: userCtx.Project.TargetMarket,
		Fields:       userCtx.BlackboardFacts,
		Materials:    []stageflow.MaterialInput{briefMaterial},
		AutoRepair:   true,
		ProjectID:    projectID,
		UserID:       userID,
	})
	if err != nil {
		if taskRes != nil && taskRes.WorkDir != "" {
			userCtx.WorkDir = taskRes.WorkDir
		}
		return &CoordinationResult{
			Status:         StatusRejected,
			Intent:         cand.Intent,
			Branch:         cand.Branch,
			RejectReason:   err.Error(),
			NaturalReply:   fmt.Sprintf("自由任务《%s》执行失败: %v", title, err),
			UpdatedContext: userCtx,
		}, err
	}

	userCtx.LatestAdvisorBrief = taskRes.AdvisorBrief
	if taskRes.WorkDir != "" {
		userCtx.WorkDir = taskRes.WorkDir
	}
	outPath := filepath.Join(taskRes.WorkDir, "output.md")

	var sb strings.Builder
	taskStatus := taskRes.TerminalStatus()
	if taskRes.AwaitsAgentConfirmation() {
		sb.WriteString(taskRes.CompletionSummary())
	} else {
		sb.WriteString(fmt.Sprintf("已为您组建特设小队并完成自由任务《%s》！\n任务简报: %s\n交付物正文已保存至：%s\n耗时: %v\n",
			title, brief, outPath, taskRes.Duration))
		if taskRes.QualityReport != nil {
			verdict := "⚠️ 未完全通过"
			if taskRes.QualityReport.Passed {
				verdict = "✅ 通过"
			}
			sb.WriteString(fmt.Sprintf("质量门禁: %s（评分 %.0f）\n", verdict, taskRes.QualityReport.Score))
		}
		if gov := governanceSummary(taskRes.WorkDir); gov != "" {
			sb.WriteString("治理审计: " + gov + "\n")
		}
		if taskRes.AdvisorBrief != nil && len(taskRes.AdvisorBrief.BaselineAssumptions) > 0 {
			sb.WriteString("\n📌 预设基准假设（已融入方案，您可随时修正）：\n")
			for _, a := range taskRes.AdvisorBrief.BaselineAssumptions {
				sb.WriteString(fmt.Sprintf("  • %s\n", a))
			}
		}
	}

	res := &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    sb.String(),
		AdvisorBrief:    taskRes.AdvisorBrief,
		ArtifactPath:    outPath,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
		TaskStatus:      taskStatus,
		TaskKey:         taskRes.TaskKey,
		ArtifactTitle:   taskRes.ArtifactTitle,
	}
	attachTaskRunProjection(res, taskRes)
	return res, nil
}

func (e *CoordinatorEngine) handleCasualChat(ctx context.Context, userCtx *UserProjectContext, rawInput string) (*CoordinationResult, error) {
	projName := userCtx.Project.Name
	if projName == "" {
		projName = "当前医疗器械研发项目"
	}

	nextExp := BuildNextExpectation(userCtx.Project.CurrentStage, userCtx.Project.Name)
	userCtx.applyPending(nextExp)

	nameSuffix := ""
	if userCtx.User.Name != "" {
		nameSuffix = "，" + userCtx.User.Name
	}
	reply := fmt.Sprintf("您好%s！我是您的项目助手，很高兴协助您推进医疗器械立项与研发协同。\n\n针对「%s」，我可以帮您：\n• 查询进展、成熟度与风险；\n• 沉淀客户需求与技术指标；\n• 起草沟通话术与方案要点；\n• 推进方案论证与报价核算。\n\n如果您愿意，我们可以先从您当前最关心的一块开始——您想先看进展、补事实，还是直接聊方案？",
		nameSuffix, projName)
	source := ReplySourceTemplate
	if llmReply, llmSource := e.generateDialogueReply(ctx, rawInput, userCtx); llmReply != "" {
		reply = llmReply
		source = llmSource
	}

	// 路由层：复杂自由任务画像命中时，先给即时初答，再附升级建议（复用挂起期望机制，含每会话冷却）
	reply, nextExp = maybeAttachUpgradeHint(rawInput, userCtx, reply, nextExp)
	userCtx.applyPending(nextExp)

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          intent.IntentCasualChat,
		Branch:          intent.BranchNewIntentPreempt,
		NaturalReply:    reply,
		AdvisorBrief:    userCtx.LatestAdvisorBrief,
		UpdatedContext:  userCtx,
		NextExpectation: nextExp,
		ReplySource:     source,
	}, nil
}

// handleSecurityForbidden 处理安全红线与合规拦截 (ISO 13485 / 21 CFR Part 11)
func (e *CoordinatorEngine) handleSecurityForbidden(userCtx *UserProjectContext) (*CoordinationResult, error) {
	reply := "⚠️ **合规权限拦截**：根据医疗器械质量管理规范（ISO 13485 / 21 CFR Part 11），企业人员的法定身份（姓名、工号、职位、部门）与系统控制台属于基线受控资产，不支持通过对话动态修改。您可通过‘查询我的权限’查看您在当前各文档中的法定职责。"
	return &CoordinationResult{
		Status:         StatusRejected,
		Intent:         intent.IntentSecurityForbidden,
		Branch:         intent.BranchNewIntentPreempt,
		RejectReason:   "SECURITY_FORBIDDEN_BASELINE_ASSET",
		NaturalReply:   reply,
		UpdatedContext: userCtx,
	}, nil
}

// handleDocGovReject 处理受控文档审核/批准驳回与二次确认交互卡片挂载（角色硬门禁）
func (e *CoordinatorEngine) handleDocGovReject(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" {
		if userCtx.InteractiveCard != nil && userCtx.InteractiveCard.TargetDocID != "" {
			docName = userCtx.InteractiveCard.TargetDocID
		} else {
			docName = "当前受控文档"
		}
	}

	rawReason := cand.FilledSlots[intent.SlotRejectReason]
	section := cand.FilledSlots[intent.SlotTargetSection]
	if section == "" {
		section = extractSectionClues(rawReason)
	}

	role := effectiveDocRole(userCtx)
	isFinal := cand.Intent == intent.IntentDocGovFinalReject

	// 与批准对称的硬门禁
	if isFinal {
		if !isApproverAuthorized(userCtx.User) && role != "approver" {
			return &CoordinationResult{
				Status:         StatusRejected,
				Intent:         cand.Intent,
				Branch:         cand.Branch,
				RejectReason:   "UNAUTHORIZED_REJECT_ROLE",
				NaturalReply:   fmt.Sprintf("权限不足：终审驳回需批准人角色。当前您的身份为「%s」。若需了解驳回原因，可直接询问。", roleLabelCN(role)),
				UpdatedContext: userCtx,
			}, nil
		}
	} else {
		if !isReviewerAuthorized(userCtx.User) && role != "reviewer" {
			return &CoordinationResult{
				Status:         StatusRejected,
				Intent:         cand.Intent,
				Branch:         cand.Branch,
				RejectReason:   "UNAUTHORIZED_REJECT_ROLE",
				NaturalReply:   fmt.Sprintf("权限不足：审核驳回需审核人角色。当前您的身份为「%s」。若需了解驳回原因，可直接询问「被驳回的原因是什么」。", roleLabelCN(role)),
				UpdatedContext: userCtx,
			}, nil
		}
	}

	// 规范化策略角色（授权通过后按意图选审核/批准确认卡）
	policyRole := role
	if isFinal {
		policyRole = "approver"
	} else if policyRole != "reviewer" && isReviewerAuthorized(userCtx.User) {
		policyRole = "reviewer"
	}

	lifecycle := "reviewing"
	if isFinal {
		lifecycle = "approving"
	}

	resolved := ResolveRejectCard(policyRole, lifecycle, docName, docName, section, rawReason, RejectUtteranceExecute)
	if resolved.Kind == "deny_text" || resolved.Card == nil {
		return &CoordinationResult{
			Status:         StatusRejected,
			Intent:         cand.Intent,
			Branch:         cand.Branch,
			RejectReason:   resolved.DenyReason,
			NaturalReply:   resolved.Reply,
			UpdatedContext: userCtx,
		}, nil
	}

	userCtx.applyCard(resolved.Card)
	userCtx.applyPending(resolved.Expectation)

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          cand.Intent,
		Branch:          cand.Branch,
		NaturalReply:    resolved.Reply,
		InteractiveCard: resolved.Card,
		NextExpectation: resolved.Expectation,
		UpdatedContext:  userCtx,
	}, nil
}

// handleQueryRejectReason 处理编制人等对驳回原因的查询（信息卡，无危险按钮）
func (e *CoordinatorEngine) handleQueryRejectReason(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" {
		docName = "当前受控文档"
	}
	role := effectiveDocRole(userCtx)
	if role == "" {
		role = "author"
	}

	// 优先从黑板或近期事件中取驳回意见
	reason := ""
	if userCtx.BlackboardFacts != nil {
		reason = userCtx.BlackboardFacts["last_reject_reason"]
		if reason == "" {
			reason = userCtx.BlackboardFacts["reject_reason"]
		}
	}
	if reason == "" && len(userCtx.RecentEvents) > 0 {
		for i := len(userCtx.RecentEvents) - 1; i >= 0; i-- {
			ev := userCtx.RecentEvents[i]
			if strings.Contains(ev, "驳回") || strings.Contains(ev, "退回") {
				reason = ev
				break
			}
		}
	}

	resolved := ResolveRejectCard(role, "", docName, docName, "", reason, RejectUtteranceQuery)
	if resolved.Card != nil {
		userCtx.applyCard(resolved.Card)
	}

	return &CoordinationResult{
		Status:          StatusAccepted,
		Intent:          intent.IntentQueryRejectReason,
		Branch:          cand.Branch,
		NaturalReply:    resolved.Reply,
		InteractiveCard: resolved.Card,
		UpdatedContext:  userCtx,
	}, nil
}

// extractSectionClues 从驳回意见中进一步抽取章节线索 (如 "第3节", "竞品对比", "抗扰度")
func extractSectionClues(text string) string {
	clues := []string{}
	// 正则提取 "第X节" 或 "第X章"
	reSec := regexp.MustCompile(`(第[0-9一二三四五六七八九十]+[章节条部分]+|[0-9]+\.[0-9]+[节章]*)`)
	if m := reSec.FindString(text); m != "" {
		clues = append(clues, m)
	}

	keywords := []string{"竞品对比", "抗扰度", "电气安全", "电磁兼容", "EMC", "风险分析", "临床评价", "BOM预算", "型检标准"}
	for _, kw := range keywords {
		if strings.Contains(text, kw) {
			clues = append(clues, kw)
		}
	}

	if len(clues) > 0 {
		return strings.Join(clues, " / ")
	}
	return ""
}

// isReviewerAuthorized 校验审核人或主导工程师权限
func isReviewerAuthorized(u UserInfo) bool {
	r := strings.ToLower(strings.TrimSpace(u.Role))
	pr := strings.ToLower(strings.TrimSpace(u.ProjectRole))
	return r == "reviewer" || pr == "reviewer" ||
		r == "lead_engineer" || pr == "lead_engineer" ||
		strings.Contains(pr, "审核") || strings.Contains(r, "审核") ||
		strings.Contains(pr, "主导") || strings.Contains(r, "主导")
}

// isApproverAuthorized 校验批准人或项目经理权限
func isApproverAuthorized(u UserInfo) bool {
	r := strings.ToLower(strings.TrimSpace(u.Role))
	pr := strings.ToLower(strings.TrimSpace(u.ProjectRole))
	return r == "approver" || pr == "approver" ||
		r == "project_manager" || pr == "project_manager" ||
		strings.Contains(pr, "批准") || strings.Contains(r, "批准") ||
		strings.Contains(pr, "总监") || strings.Contains(r, "总监") ||
		r == "director"
}

// handleDocGovApprove 处理受控文档审核/批准通过与终审批准二次确认
func (e *CoordinatorEngine) handleDocGovApprove(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" {
		if userCtx.InteractiveCard != nil && userCtx.InteractiveCard.TargetDocID != "" {
			docName = userCtx.InteractiveCard.TargetDocID
		} else {
			docName = "当前受控文档"
		}
	}

	currentRole := userCtx.User.ProjectRole
	if currentRole == "" {
		currentRole = userCtx.User.Role
	}
	if currentRole == "" {
		currentRole = "未知角色"
	}

	isFinal := cand.Intent == intent.IntentDocGovFinalApprove

	if isFinal {
		// 校验终审批准权限: approver 或 project_manager
		if !isApproverAuthorized(userCtx.User) {
			return &CoordinationResult{
				Status:         StatusRejected,
				Intent:         cand.Intent,
				Branch:         cand.Branch,
				RejectReason:   "UNAUTHORIZED_APPROVAL_ROLE",
				NaturalReply:   fmt.Sprintf("权限不足：受控文档终审批准需要批准人 (approver) 或项目经理 (project_manager) 权限。当前您的身份为「%s」，无权执行终审批准操作。", currentRole),
				UpdatedContext: userCtx,
			}, nil
		}

		cardID := fmt.Sprintf("card_final_appr_%d", time.Now().UnixNano())
		cardPayload := &intent.InteractiveCardPayload{
			CardID:          cardID,
			CardType:        "CONFIRMATION",
			Title:           "受控文档终审批准生效确认",
			TargetDocID:     docName,
			TargetDocTitle:  fmt.Sprintf("《%s》", docName),
			ProposedContent: "正式终审批准受控文档，签署电子签名并受控归档生效",
			ImpactRisk:      "终审批准后文档正文将永久锁定为基线版本，后续非受控修改将被严格拦截，任何变更必须走变更审批流程",
			CurrentStatus:   "active",
			TTLTurns:        3,
			CreatedAt:       time.Now(),
			Actions: []intent.CardAction{
				{
					ActionID:             "confirm_final_approve",
					Label:                "确认终审批准生效",
					Style:                "primary",
					IsAffirmativeDefault: true,
					Payload: map[string]string{
						"target_doc":    docName,
						"target_action": "confirm_final_approve",
					},
				},
				{
					ActionID: "cancel",
					Label:    "取消",
					Style:    "subtle",
					Payload: map[string]string{
						"action": "cancel",
					},
				},
			},
		}

		nextExp := &intent.PendingExpectation{
			ExpectationID:    "exp_" + cardPayload.CardID,
			ExpectedIntent:   intent.IntentDocGovProposalDecide,
			TargetAction:     "confirm_final_approve",
			Prompt:           "请确认是否执行终审批准操作",
			AffirmativeWord:  "确认",
			DeclineWord:      "取消",
			ExpiresAt:        time.Now().Add(5 * time.Minute),
			Payload:          cardPayload.Actions[0].Payload,
			AllowAffirmative: true,
			CreatedAt:        time.Now(),
			DefaultOption: &intent.ExpectationOption{
				OptionID: "confirm_final_approve",
				Title:    "确认终审批准生效",
				Intent:   intent.IntentDocGovProposalDecide,
				Slots:    cardPayload.Actions[0].Payload,
			},
		}

		userCtx.applyCard(cardPayload)
		userCtx.applyPending(nextExp)

		reply := fmt.Sprintf("已为您起草针对《%s》的终审批准确认单。终审批准将使文档正式归档并永久锁定，请审阅下方卡片并在确认无误后点击确认或回复‘确认’。", docName)

		return &CoordinationResult{
			Status:          StatusAccepted,
			Intent:          cand.Intent,
			Branch:          cand.Branch,
			NaturalReply:    reply,
			InteractiveCard: cardPayload,
			NextExpectation: nextExp,
			UpdatedContext:  userCtx,
		}, nil
	}

	// 校验审核通过权限: reviewer 或 lead_engineer
	if !isReviewerAuthorized(userCtx.User) {
		return &CoordinationResult{
			Status:         StatusRejected,
			Intent:         cand.Intent,
			Branch:         cand.Branch,
			RejectReason:   "UNAUTHORIZED_REVIEW_ROLE",
			NaturalReply:   fmt.Sprintf("权限不足：受控文档审核通过需要审核人 (reviewer) 或主导工程师 (lead_engineer) 权限。当前您的身份为「%s」，无权执行审核通过操作。", currentRole),
			UpdatedContext: userCtx,
		}, nil
	}

	reply := fmt.Sprintf("正在处理您对《%s》的审核通过请求…", docName)

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   reply,
		UpdatedContext: userCtx,
		PendingAction: &PendingAction{
			Kind:    "docgov.review_approve",
			DocID:   docName,
			Comment: cand.FilledSlots[intent.SlotRejectReason],
		},
	}, nil
}

// handleDocGovClaim 处理受控文档认领
func (e *CoordinatorEngine) handleDocGovClaim(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" {
		docName = "当前受控文档"
	}

	// 记录在用户的已认领清单中
	found := false
	for _, d := range userCtx.UserDocs.Claimed {
		if d == docName {
			found = true
			break
		}
	}
	if !found {
		userCtx.UserDocs.Claimed = append(userCtx.UserDocs.Claimed, docName)
	}

	reply := fmt.Sprintf("您已成功认领《%s》。系统已锁定您作为该文档的法定责任人，您可以开始在线就地修订正文或提交审核。", docName)

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   reply,
		UpdatedContext: userCtx,
	}, nil
}

// handleDocGovSubmitReview 处理受控文档提交审核
func (e *CoordinatorEngine) handleDocGovSubmitReview(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" {
		docName = "当前受控文档"
	}

	reply := fmt.Sprintf("《%s》已成功提交审核！文档正文已进入受控锁定状态，并已通知审核责任人进行合规审查与批注。", docName)

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   reply,
		UpdatedContext: userCtx,
	}, nil
}

// handleDocGovProposalDecide 处理智能体修改建议与提案裁决，以及驳回/终审批准确认执行
func (e *CoordinatorEngine) handleDocGovProposalDecide(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	targetAction := cand.FilledSlots["target_action"]
	if targetAction == "" {
		targetAction = cand.FilledSlots["action"]
	}
	if targetAction == "" && cand.MatchedOption != nil {
		targetAction = cand.MatchedOption.OptionID
	}

	docName := cand.FilledSlots[intent.SlotTargetDoc]
	if docName == "" && userCtx.InteractiveCard != nil && userCtx.InteractiveCard.TargetDocID != "" {
		docName = userCtx.InteractiveCard.TargetDocID
	}
	if docName == "" {
		docName = "当前受控文档"
	}

	if targetAction == "confirm_reject" {
		reason := cand.FilledSlots[intent.SlotRejectReason]
		if reason == "" && userCtx.InteractiveCard != nil {
			reason = userCtx.InteractiveCard.ProposedContent
		}

		if userCtx.InteractiveCard != nil {
			userCtx.dismissCard("resolved")
		}
		userCtx.applyPending(nil)

		rollback := docgov.StateDrafting
		if userCtx.InteractiveCard != nil && strings.Contains(userCtx.InteractiveCard.ImpactRisk, "reviewing") {
			rollback = docgov.StateDrafting
		}

		return &CoordinationResult{
			Status:           StatusAccepted,
			Intent:           cand.Intent,
			Branch:           cand.Branch,
			NaturalReply:     fmt.Sprintf("正在处理您对《%s》的驳回确认…", docName),
			UpdatedContext:   userCtx,
			ClearExpectation: true,
			PendingAction: &PendingAction{
				Kind:     "docgov.reject",
				DocID:    docName,
				Reason:   reason,
				Rollback: rollback,
			},
		}, nil
	}

	if targetAction == "confirm_final_approve" {
		if userCtx.InteractiveCard != nil {
			userCtx.dismissCard("resolved")
		}
		userCtx.applyPending(nil)

		return &CoordinationResult{
			Status:           StatusAccepted,
			Intent:           cand.Intent,
			Branch:           cand.Branch,
			NaturalReply:     fmt.Sprintf("正在处理您对《%s》的终审批准…", docName),
			UpdatedContext:   userCtx,
			ClearExpectation: true,
			PendingAction: &PendingAction{
				Kind:  "docgov.approver_approve",
				DocID: docName,
			},
		}, nil
	}

	if targetAction == "cancel" {
		if userCtx.InteractiveCard != nil {
			userCtx.dismissCard("cancelled")
		}
		userCtx.applyPending(nil)

		return &CoordinationResult{
			Status:           StatusAccepted,
			Intent:           cand.Intent,
			Branch:           cand.Branch,
			NaturalReply:     fmt.Sprintf("已取消针对《%s》的操作，文档状态保持不变。", docName),
			UpdatedContext:   userCtx,
			ClearExpectation: true,
		}, nil
	}

	action := cand.FilledSlots[intent.SlotProposalAction]
	var reply string
	if action == "reject" {
		reply = "已拒绝该修改变更提案。文档正文保持原样，提案记录已归档。"
	} else {
		reply = "已采纳该修改变更提案，补充内容与参数已合并入受控文档。"
	}

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   reply,
		UpdatedContext: userCtx,
	}, nil
}

// handleQueryRegulations 处理强标与审评指导原则查询
func (e *CoordinatorEngine) handleQueryRegulations(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	searchQuery := ""
	if userCtx != nil && userCtx.RewrittenQuery != "" {
		searchQuery = userCtx.RewrittenQuery
	} else if userCtx != nil && userCtx.TaskState != nil && userCtx.TaskState.TopicAnchor != "" {
		searchQuery = userCtx.TaskState.TopicAnchor
	} else if userCtx != nil {
		searchQuery = userCtx.Project.Name
	}
	if userCtx != nil && userCtx.Project.DeviceType != "" && !strings.Contains(searchQuery, userCtx.Project.DeviceType) {
		searchQuery += " " + userCtx.Project.DeviceType
	}

	var hits []kb.HitItem
	if e != nil && e.kbClient != nil && strings.TrimSpace(searchQuery) != "" {
		cacheKey := ctxmgr.HashKey("regulatory_search", searchQuery)
		cache := ctxmgr.GetGlobalCache()
		if cached, ok := cache.Get(ctxmgr.LayerC1Search, cacheKey); ok {
			if ch, ok := cached.([]kb.HitItem); ok {
				hits = ch
			}
		} else {
			kbHits, err := e.kbClient.Search(ctx, searchQuery, kb.SearchOptions{
				Domains: []kb.KnowledgeDomain{kb.DomainRegulatory},
				Limit:   5,
			})
			if err == nil && len(kbHits) > 0 {
				hits = kbHits
				cache.Set(ctxmgr.LayerC1Search, cacheKey, hits, 30)
			}
		}
	}

	var sb strings.Builder
	projectName := "医疗器械项目"
	if userCtx != nil && userCtx.Project.Name != "" {
		projectName = userCtx.Project.Name
	}

	if len(hits) > 0 {
		if userCtx != nil {
			userCtx.RegulationHits = hits
		}
		sb.WriteString(fmt.Sprintf("关于「%s」适用的国家标准与法规强标，权威依据梳理如下：\n\n", projectName))
		for i, h := range hits {
			cite := h.CiteKey
			if cite == "" {
				cite = fmt.Sprintf("〔%s〕", h.DocCode)
			}
			title := h.Title
			if title == "" {
				title = h.DocCode
			}
			sb.WriteString(fmt.Sprintf("%d. **%s** %s\n", i+1, title, cite))
			if h.HeadingPath != "" {
				sb.WriteString(fmt.Sprintf("   - 条款章节: %s\n", h.HeadingPath))
			}
			if h.Content != "" {
				cText := strings.TrimSpace(h.Content)
				if len([]rune(cText)) > 150 {
					cText = string([]rune(cText)[:150]) + "..."
				}
				sb.WriteString(fmt.Sprintf("   - 条款要点: %s\n", cText))
			}
		}
		sb.WriteString("\n上述标准与条款可作为型检与注册申报的权威技术支撑。如需深入比对专标或预估测试周期，请随时吩咐我。")
	} else {
		// 降级基准模板
		sb.WriteString(fmt.Sprintf("关于「%s」适用的国家标准与法规强标，我为您梳理如下：\n\n", projectName))
		sb.WriteString("1. **通用安全标准**：GB 9706.1-2020《医用电气设备 第1部分：基本安全和基本性能的通用要求》；\n")
		sb.WriteString("2. **电磁兼容强标**：YY 9706.102-2021 / YY 0505-2012《医用电气设备 第1-2部分：基本安全和基本性能的通用要求 并列标准：电磁兼容》；\n")
		sb.WriteString("3. **专项性能指导原则**：需遵循 NMPA 医疗器械技术审评中心现行审评要点，并重点完善风险管理报告（依据 GB/T 42062-2020）。\n\n")
		sb.WriteString("如需查看具体条款对比或型检预估，请随时吩咐我。")
	}

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   sb.String(),
		AdvisorBrief:   userCtx.LatestAdvisorBrief,
		UpdatedContext: userCtx,
	}, nil
}

// handleQuerySimilarCases 处理标杆案例检索
func (e *CoordinatorEngine) handleQuerySimilarCases(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	brief := userCtx.LatestAdvisorBrief
	var sb strings.Builder
	sb.WriteString(fmt.Sprintf("已为您检索与「%s」相似的往期成功注册与过会标杆案例：\n\n", userCtx.Project.Name))

	if brief != nil && len(brief.RecommendedCases) > 0 {
		for i, c := range brief.RecommendedCases {
			sb.WriteString(fmt.Sprintf("• **案例 %d: %s**\n", i+1, c.ArtifactTitle))
			if c.SectionTitle != "" {
				sb.WriteString(fmt.Sprintf("  - 关联章节: %s\n", c.SectionTitle))
			}
			if c.SummarySnippet != "" {
				sb.WriteString(fmt.Sprintf("  - 标杆经验: %s\n", c.SummarySnippet))
			}
			if len(c.KeyRegulations) > 0 {
				sb.WriteString(fmt.Sprintf("  - 关键法规: %s\n", strings.Join(c.KeyRegulations, ", ")))
			}
		}
	} else {
		sb.WriteString("• **标杆案例 1: 超高清内窥镜摄像系统注册获批经验 (PRJ-2025-008)**\n")
		sb.WriteString("  - 方案特点: 采用高抗扰度硬件隔离拓扑，型检一次性通过 EMC 实验；\n")
		sb.WriteString("  - 关键标准: 符合 GB 9706.1-2020 及 GB 9706.218 医用内窥镜专标。\n")
		sb.WriteString("• **标杆案例 2: 便携式微创诊断设备快速过会经验 (PRJ-2024-019)**\n")
		sb.WriteString("  - 方案特点: 完备同品种器械实质等同临床比对，免除大规模临床试验。\n")
	}

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   sb.String(),
		AdvisorBrief:   brief,
		UpdatedContext: userCtx,
	}, nil
}

// handleQueryUserRights 处理用户法定权责查询
func (e *CoordinatorEngine) handleQueryUserRights(ctx context.Context, cand *intent.CandidateIntent, userCtx *UserProjectContext) (*CoordinationResult, error) {
	var sb strings.Builder
	userName := userCtx.User.Name
	if userName == "" {
		userName = "当前用户"
	}
	role := userCtx.User.ProjectRole
	if role == "" {
		role = userCtx.User.Role
	}

	sb.WriteString(fmt.Sprintf("您好，%s！您在项目「%s」中的法定受控职责如下：\n\n", userName, userCtx.Project.Name))
	sb.WriteString(fmt.Sprintf("• **系统/项目身份**：%s (角色代码: %s)\n", userName, role))

	if len(userCtx.UserDocs.Composed) > 0 {
		sb.WriteString(fmt.Sprintf("• **负责编制文档**：%s (具备在线编辑与提审权限)\n", strings.Join(userCtx.UserDocs.Composed, "、")))
	}
	if len(userCtx.UserDocs.Reviewed) > 0 {
		sb.WriteString(fmt.Sprintf("• **负责审核文档**：%s (具备审查批注、审核通过与驳回退回权限)\n", strings.Join(userCtx.UserDocs.Reviewed, "、")))
	}
	if len(userCtx.UserDocs.Approved) > 0 {
		sb.WriteString(fmt.Sprintf("• **负责批准文档**：%s (具备终审批准受控生效与终审驳回权限)\n", strings.Join(userCtx.UserDocs.Approved, "、")))
	}
	if len(userCtx.UserDocs.Claimed) > 0 {
		sb.WriteString(fmt.Sprintf("• **当前已认领文档**：%s\n", strings.Join(userCtx.UserDocs.Claimed, "、")))
	}

	sb.WriteString("\n根据 ISO 13485 质量管理规范，您的所有审核、批注与批准行为均将记入不可篡改的系统审计日志。")

	return &CoordinationResult{
		Status:         StatusAccepted,
		Intent:         cand.Intent,
		Branch:         cand.Branch,
		NaturalReply:   sb.String(),
		UpdatedContext: userCtx,
	}, nil
}

// parseDecimalID accepts only a non-negative decimal integer.
// Values like u_sess_* must not become UserID 0 via a partial Sscanf match.
func parseDecimalID(raw string) int64 {
	raw = strings.TrimSpace(raw)
	if raw == "" {
		return 0
	}
	n, err := strconv.ParseInt(raw, 10, 64)
	if err != nil || n < 0 {
		return 0
	}
	return n
}