diff --git a/README.md b/README.md
index 99110a2..18752c7 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![Go Version](https://img.shields.io/badge/Go-1.26%2B-blue.svg)](https://golang.org)
 [![npm version](https://img.shields.io/npm/v/@gitlink-ai/cli.svg)](https://www.npmjs.com/package/@gitlink-ai/cli)
 
-The official [GitLink](https://www.gitlink.org.cn) CLI tool — built for humans and AI Agents. Supports **macOS, Linux, and Windows**. Covers repository management, issue tracking, pull requests, webhooks, member collaboration, CI/CD, and AI-powered workflows, with 40+ commands and AI Agent [Skills](./skills/README.md).
+The official [GitLink](https://www.gitlink.org.cn) CLI tool — built for humans and AI Agents. Supports **macOS, Linux, and Windows**. Covers repository management, issue tracking, pull requests, webhooks, member collaboration, CI/CD, and AI-powered workflows, with 40+ commands and AI Agent [Skills](./skills/).
 
 **[中文文档](./README.zh-CN.md)**
 
@@ -78,19 +78,11 @@ The official [GitLink](https://www.gitlink.org.cn) CLI tool — built for humans
   <a href="https://www.gitlink.org.cn/jiangtx" title="jiangtx"><img src="https://www.gitlink.org.cn/system/lets/letter_avatars/2/J/67_157_94/120.png" width="40" height="40" alt="jiangtx" style="border-radius: 50%;"></a>
   <br><sub><a href="https://www.gitlink.org.cn/jiangtx">jiangtx</a></sub>
 </div>
-<div align="center">
-  <a href="https://www.gitlink.org.cn/luwanzhou" title="luwanzhou"><img src="https://www.gitlink.org.cn/system/lets/letter_avatars/2/L/165_135_246/120.png" width="40" height="40" alt="luwanzhou" style="border-radius: 50%;"></a>
-  <br><sub><a href="https://www.gitlink.org.cn/luwanzhou">luwanzhou</a></sub>
-</div>
-<div align="center">
-  <a href="https://www.gitlink.org.cn/whale_hihihi" title="whale_hihihi"><img src="https://www.gitlink.org.cn/images/avatars/User/137722?t=1778575729" width="40" height="40" alt="whale_hihihi" style="border-radius: 50%;"></a>
-  <br><sub><a href="https://www.gitlink.org.cn/whale_hihihi">whale_hihihi</a></sub>
-</div>
 </div>
 
 ## Why gitlink-cli?
 
-- **Agent-Native Design** — Structured [Skills](./skills/README.md) out of the box, compatible with Claude Code, OpenClaw, and other AI platforms — Agents can operate GitLink with zero extra setup
+- **Agent-Native Design** — Structured [Skills](./skills/) out of the box, compatible with Claude Code, OpenClaw, and other AI platforms — Agents can operate GitLink with zero extra setup
 - **Wide Coverage** — Repository, Issue, PR, Webhook, Member, Branch, Release, CI, Pipeline, Org, Search, and User workflows are covered by high-level commands
 - **AI-Friendly & Optimized** — Every command is tested with real Agents, featuring concise parameters, smart defaults, and structured output
 - **Cross-Platform** — Runs on macOS, Linux, and Windows (x64/arm64), install via `npm install -g @gitlink-ai/cli` in one command, binary auto-downloaded
@@ -103,8 +95,8 @@ The official [GitLink](https://www.gitlink.org.cn) CLI tool — built for humans
 
 | Category | Capabilities |
 |----------|-------------|
-| 📦 Repo | List, create, fork, delete repositories, read and search files, batch commit file changes, view repo info, insights, and interactions |
-| 🐛 Issue | Create, update, close, batch close/update/delete, comment on issues |
+| 📦 Repo | List, create, fork, delete repositories, view repo info, insights, and interactions |
+| 🐛 Issue | Create, update, close, batch close, comment on issues |
 | 🔖 Label | Create, list, update, delete issue labels |
 | 🔀 PR | Create, merge, review pull requests, view changed files |
 | 👥 Member | List, add, remove repository members, change roles, create and accept invite links |
@@ -113,14 +105,9 @@ The official [GitLink](https://www.gitlink.org.cn) CLI tool — built for humans
 | 🏢 Org | Manage organizations, members, teams |
 | 🔧 CI | View builds, logs, CI/CD operations |
 | ⚙️ Pipeline | Run, inspect, enable, disable, delete pipeline workflows and logs |
-| 🔔 Message Settings | Inspect and update personal message delivery preferences |
 | 🔔 Webhook | Manage repo webhooks and test deliveries |
-| 📖 Wiki | List, view, create, update, and delete wiki pages |
-| 🔔 Notification | List, read, and delete user messages |
 | 🔍 Search | Search repositories, users |
-| 📊 Dataset | Query research datasets by project |
 | 👤 User | View user profiles and info |
-| 📊 Profile | User ability, role, major, activity, and contribution statistics |
 | 📋 PM | Sprint management, kanban boards, weekly reports |
 | 🤖 Workflow | AI-powered issue triage, PR review, release notes |
 
@@ -225,26 +212,10 @@ gitlink-cli repo +info --owner Gitlink --repo forgeplus
 # Read repository README
 gitlink-cli repo +readme --owner Gitlink --repo forgeplus --ref master
 
-# Read one repository file with metadata
-gitlink-cli repo +file --owner Gitlink --repo forgeplus --path README.md --ref main
-
 # List repository files at root or a directory
 gitlink-cli repo +tree --owner Gitlink --repo forgeplus --ref master
 gitlink-cli repo +tree --owner Gitlink --repo forgeplus --path src --ref main
 
-# Search repository files by name
-gitlink-cli repo +files --owner Gitlink --repo forgeplus --search README --ref main
-
-# Commit one file change
-gitlink-cli repo +commit-files --owner Gitlink --repo forgeplus \
-  --branch main --message "docs: update README" \
-  --path README.md --content "# Project"
-
-# Commit several file changes from a JSON operations file
-gitlink-cli repo +commit-files --owner Gitlink --repo forgeplus \
-  --branch main --new-branch docs/batch-update \
-  --message "docs: batch update" --ops changes.json --dry-run
-
 # Show language breakdown
 gitlink-cli repo +languages --owner Gitlink --repo forgeplus
 
@@ -292,47 +263,6 @@ gitlink-cli webhook +test --owner Gitlink --repo forgeplus --id 68
 gitlink-cli webhook +tasks --owner Gitlink --repo forgeplus --id 68
 ```
 
-### Wiki Management
-
-```bash
-# List wiki pages (table of contents)
-gitlink-cli wiki +list --owner Gitlink --repo forgeplus --project-id 12345
-
-# View a wiki page by page name
-gitlink-cli wiki +view --owner Gitlink --repo forgeplus --project-id 12345 -n home
-
-# Create a wiki page
-gitlink-cli wiki +create --owner Gitlink --repo forgeplus --project-id 12345 \
-  -n getting-started -t "Getting Started" -c "# Getting Started Guide"
-
-# Update a wiki page title and/or content
-gitlink-cli wiki +update --owner Gitlink --repo forgeplus --project-id 12345 -n home -t "New Title"
-gitlink-cli wiki +update --owner Gitlink --repo forgeplus --project-id 12345 -n home -c "# Updated content"
-gitlink-cli wiki +update --owner Gitlink --repo forgeplus --project-id 12345 -n home -t "New Title" -c "New content"
-
-# Delete a wiki page
-gitlink-cli wiki +delete --owner Gitlink --repo forgeplus --project-id 12345 -n old-page
-```
-
-### Notifications
-
-```bash
-# List current user's unread notifications
-gitlink-cli notification +list --type notification --status unread
-
-# List @me messages for an explicit user
-gitlink-cli notification +list --user Mengz --type atme
-
-# Mark messages as read
-gitlink-cli notification +read --type atme --ids 101,102
-
-# Mark all unread notifications as read
-gitlink-cli notification +read --type notification --ids -1
-
-# Delete messages
-gitlink-cli notification +delete --type notification --ids 101,102
-```
-
 ### Member Management
 
 ```bash
@@ -382,14 +312,6 @@ gitlink-cli issue +batch-close --owner Gitlink --repo forgeplus --numbers 123,12
 # Batch close issues from a CSV file
 gitlink-cli issue +batch-close --owner Gitlink --repo forgeplus --from issues.csv
 
-# Preview batch metadata update by API issue IDs
-# Note: --ids uses API issue IDs, not web URL issue numbers.
-gitlink-cli issue +batch-update --owner Gitlink --repo forgeplus --ids 101,102 --status-id 3 --priority-id 2 --dry-run
-
-# Destructive batch delete requires both dry-run first and --yes for real execution
-gitlink-cli issue +batch-delete --owner Gitlink --repo forgeplus --ids 101,102 --dry-run
-gitlink-cli issue +batch-delete --owner Gitlink --repo forgeplus --ids 101,102 --yes
-
 # Add a comment
 gitlink-cli issue +comment --owner Gitlink --repo forgeplus -i 123 -b "Fixed"
 
@@ -476,10 +398,6 @@ gitlink-cli pr +review --owner Gitlink --repo forgeplus -i 42 --status approved
 ```bash
 # List branches
 gitlink-cli branch +list --owner Gitlink --repo forgeplus
-gitlink-cli branch +list --owner Gitlink --repo forgeplus --keyword fix --state deleted
-
-# List all branches without pagination
-gitlink-cli branch +all --owner Gitlink --repo forgeplus
 
 # Create a branch
 gitlink-cli branch +create --name feature/new-feature
@@ -492,10 +410,6 @@ gitlink-cli branch +protect --name main
 
 # Remove branch protection
 gitlink-cli branch +unprotect --name main
-
-# Set default branch or restore a deleted branch (preview first)
-gitlink-cli branch +set-default --owner Gitlink --repo forgeplus --name main --dry-run
-gitlink-cli branch +restore --owner Gitlink --repo forgeplus --id 7 --name feature/old --dry-run
 ```
 
 ### Release Management
@@ -553,16 +467,6 @@ gitlink-cli pipeline +disable --owner Gitlink --repo forgeplus --id 7 --workflow
 gitlink-cli pipeline +delete --owner Gitlink --repo forgeplus --id 7 --dry-run
 ```
 
-### Ignore File Templates
-
-```bash
-# List all available .gitignore templates
-gitlink-cli ignore +list
-
-# Filter templates by name
-gitlink-cli ignore +list --name Go
-```
-
 ### Search
 
 ```bash
@@ -573,29 +477,6 @@ gitlink-cli search +repos -k "machine learning"
 gitlink-cli search +users -k "zhangsan"
 ```
 
-### User Profile
-
-`profile` surfaces GitLink's native user statistics (ability, role, major, activity,
-contribution). When `--user` is omitted it defaults to the authenticated user.
-
-```bash
-# Development ability scores + language breakdown
-gitlink-cli profile +ability --user zhangsan
-
-# Role positioning / major (discipline) categories
-gitlink-cli profile +role --user zhangsan
-gitlink-cli profile +major --user zhangsan
-
-# Ability within a time window (Unix timestamps)
-gitlink-cli profile +ability --user zhangsan --start-time 1704067200 --end-time 1735689600
-
-# Recent activity (issues / PRs / commits per day) for the current user
-gitlink-cli profile +activity
-
-# Contribution heatmap for a given year
-gitlink-cli profile +contribution --user zhangsan --year 2025
-```
-
 ### Workflow Agent Commands
 
 `workflow` provides rule-based repository analysis for maintainers and AI Agents. It currently supports:
@@ -604,11 +485,11 @@ gitlink-cli profile +contribution --user zhangsan --year 2025
 - `workflow +health`
 - `workflow +pr-summary`
 - `workflow +repo-report`
-- `workflow +release-readiness`
+- `workflow +issue-dedupe`
 
 `workflow +pr-summary` defaults to `table` when `--format` is omitted.
 `workflow +repo-report` defaults to `markdown` when `--format` is omitted.
-`workflow +release-readiness` defaults to `table` when `--format` is omitted.
+`workflow +issue-dedupe` defaults to `table` when `--format` is omitted.
 
 Examples:
 
@@ -682,17 +563,11 @@ gitlink-cli workflow +repo-report --owner Gitlink --repo gitlink-cli --format ma
 # Repository workflow report from a local JSON file
 gitlink-cli workflow +repo-report --from shortcuts/workflow/testdata/repo_report.json --format json
 
-# Evaluate whether a release is ready to publish
-gitlink-cli workflow +release-readiness \
-  --version v1.2.0 \
-  --changes "Add workflow gate,Fix release upload" \
-  --tests "go test ./...=passed,go build ./...=passed" \
-  --artifacts "windows zip=passed,linux tar=passed" \
-  --rollback-plan "Revert tag and restore previous release assets" \
-  --format table
+# Find likely duplicate issues by read-only GitLink fetch
+gitlink-cli workflow +issue-dedupe --owner Gitlink --repo gitlink-cli --limit 50 --threshold 55 --format table
 
-# Evaluate release readiness from a JSON gate file
-gitlink-cli workflow +release-readiness --from release_readiness.json --format markdown
+# Find duplicate candidates from a local issue JSON file
+gitlink-cli workflow +issue-dedupe --from issues.json --threshold 60 --format markdown
 ```
 
 Output formats:
@@ -708,33 +583,7 @@ Safety:
 - They do not depend on LLM APIs.
 - `workflow +pr-summary` does not comment, approve, reject, or merge pull requests.
 - `workflow +repo-report` aggregates health, issue triage, and PR review summary signals without remote writes.
-- `workflow +release-readiness` evaluates local gate signals only; it does not create tags, releases, or assets.
-
-### Dataset
-
-`dataset` manages and queries GitLink research datasets (title, description,
-paper content, license, owning project).
-
-```bash
-# List datasets for one or more projects (by numeric project ID)
-gitlink-cli dataset +list --ids 5988
-
-# View a repository's dataset and attachments
-gitlink-cli dataset +view --owner Gitlink --repo forgeplus
-
-# Create / update a repository's dataset (preview first with --dry-run)
-gitlink-cli dataset +create --owner me --repo proj -t "My dataset" -d "..." --license-id 359 --dry-run
-gitlink-cli dataset +update --owner me --repo proj -t "My dataset" -d "updated"
-
-# Delete a dataset attachment (destructive: preview, then confirm with --yes)
-gitlink-cli dataset +delete-attachment --owner me --repo proj --uuid <uuid> --dry-run
-gitlink-cli dataset +delete-attachment --owner me --repo proj --uuid <uuid> --yes
-```
-
-> Note: `dataset +list` (platform dataset query) is verified on production
-> gitlink.org.cn. The per-repo `+view`/`+create`/`+update` routes follow the
-> published OpenAPI contract but are not yet deployed on production (they return
-> 404 there); they will work once the platform enables them.
+- `workflow +issue-dedupe` only reports duplicate candidates; it does not close, comment on, or edit issues.
 
 ### Raw API
 
@@ -755,20 +604,6 @@ Get-Content issue.json | gitlink-cli api POST /Gitlink/forgeplus/issues --body-s
 
 # With query parameters
 gitlink-cli api GET /Gitlink/forgeplus/commits --query 'page=1&limit=5'
-
-# Render owner/repo from git context or explicit variables
-gitlink-cli api POST /:owner/:repo/issues --body '{"subject":"Bug","description":"..."}'
-
-# Reuse template variables in a single request
-gitlink-cli api POST /v1/{{owner}}/{{repo}}/issues/{{number}}/journals \
-  --body '{"notes":"handled by {{actor}}"}' \
-  --var owner=Gitlink --var repo=gitlink-cli --var number=42 --var actor=bot
-
-# Preview a rendered single request without sending it
-gitlink-cli api POST /v1/{{owner}}/{{repo}}/issues \
-  --body-file issue.json \
-  --var owner=Gitlink --var repo=gitlink-cli \
-  --dry-run
 ```
 
 ## Global Parameters
@@ -806,20 +641,19 @@ git push gitlink
 
 The `skills/` directory contains Agent Skill files for AI-automated GitLink operations.
 
-See [skills/README.md](./skills/README.md) for details.
+See [skills/README.md](skills/README.md) for details.
 
 | Skill | Description |
 |-------|-------------|
 | `gitlink-shared` | Authentication, global parameters, safety rules, API notes |
 | `gitlink-repo` | Repository operations (create, view, delete, fork, insights, etc.) |
-| `gitlink-issue` | Issue operations (create, update, close, batch update/delete, comment, etc.) |
+| `gitlink-issue` | Issue operations (create, update, close, comment, etc.) |
 | `gitlink-pr` | Pull request operations (create, merge, review, etc.) |
 | `gitlink-member` | Repository member and invite link management |
 | `gitlink-branch` | Branch management (create, delete, list, protect, unprotect) |
 | `gitlink-release` | Release management (create, edit, update, view, delete, etc.) |
 | `gitlink-ci` | CI/CD operations (builds, logs, etc.) |
 | `gitlink-pipeline` | Pipeline workflow operations (runs, logs, enable, disable, delete, etc.) |
-| `gitlink-notification` | User messages (list, mark read, delete) |
 | `gitlink-search` | Search (repositories, users, etc.) |
 | `gitlink-org` | Organization management (members, teams, etc.) |
 | `gitlink-user` | User management (profile info, etc.) |
@@ -877,7 +711,7 @@ gitlink-cli/
 
 ## Documentation
 
-- [Skills Guide](./skills/README.md) — AI Agent Skills detailed documentation
+- [Skills Guide](skills/README.md) — AI Agent Skills detailed documentation
 - [Design Document](doc/design.md) — Architecture design and development plan
 
 ## FAQ
@@ -942,7 +776,7 @@ gitlink-cli uses Windows Credential Manager for secure token storage. If Credent
 
 ### Q: Where can I find the full API reference?
 
-See [skills/gitlink-shared/references/api-reference.md](./skills/gitlink-shared/references/api-reference.md).
+See [skills/gitlink-shared/REFERENCE.md](skills/gitlink-shared/REFERENCE.md).
 
 ## License
 
diff --git a/README.zh-CN.md b/README.zh-CN.md
index f057ecb..3a5a37e 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -457,7 +457,7 @@ gitlink-cli search +users -k "zhangsan"
 
 ### 工作流命令
 
-`workflow` 提供面向维护者和 AI Agent 的只读分析能力，可用于 Issue 分流、仓库健康度评估、PR 审查摘要、仓库工作流报告和发布就绪度检查。
+`workflow` 提供面向维护者和 AI Agent 的只读分析能力，可用于 Issue 分流、仓库健康度评估、PR 审查摘要、仓库工作流报告和重复 Issue 候选检测。
 
 ```bash
 # 生成单个 PR 的审查摘要
@@ -466,20 +466,14 @@ gitlink-cli workflow +pr-summary --owner Gitlink --repo gitlink-cli --number 1 -
 # 生成仓库工作流报告
 gitlink-cli workflow +repo-report --owner Gitlink --repo gitlink-cli --format markdown
 
-# 根据本地门禁信号判断发布是否可以推进
-gitlink-cli workflow +release-readiness \
-  --version v1.2.0 \
-  --changes "新增工作流门禁,修复 Release 上传" \
-  --tests "go test ./...=passed,go build ./...=passed" \
-  --artifacts "windows zip=passed,linux tar=passed" \
-  --rollback-plan "回滚 tag 并恢复上一版制品" \
-  --format table
+# 从远端只读拉取 Issue 并检测重复候选
+gitlink-cli workflow +issue-dedupe --owner Gitlink --repo gitlink-cli --limit 50 --threshold 55 --format table
 
-# 从 JSON 门禁文件生成发布就绪度报告
-gitlink-cli workflow +release-readiness --from release_readiness.json --format markdown
+# 从本地 JSON 文件检测重复候选
+gitlink-cli workflow +issue-dedupe --from issues.json --threshold 60 --format markdown
 ```
 
-`workflow +release-readiness` 默认使用 `table` 输出，会综合版本号、变更摘要、已知阻塞项、测试结果、发布制品、破坏性变更回滚方案和依赖风险，给出 `pass/review/block` 门禁结论；命令只分析本地输入，不会创建 tag、Release 或附件。
+`workflow +issue-dedupe` 默认使用 `table` 输出，会根据标题、正文和标签的共享关键词计算相似度，帮助维护者优先确认高置信重复候选；命令只输出候选对，不会关闭、评论或修改 Issue。
 
 ### Raw API
 
diff --git a/doc/changes/workflow-issue-dedupe.md b/doc/changes/workflow-issue-dedupe.md
new file mode 100644
index 0000000..d2d1aaa
--- /dev/null
+++ b/doc/changes/workflow-issue-dedupe.md
@@ -0,0 +1,7 @@
+# 新增重复 Issue 候选检测工作流
+
+`gitlink-cli workflow +issue-dedupe` 新增了只读的重复 Issue 候选检测能力。命令可以读取本地 Issue JSON，也可以通过 GitLink API 只读拉取指定仓库的 Issue 列表，再基于标题、正文和标签分词计算相似度，输出候选重复对、置信度、共享关键词和处理建议。
+
+该功能面向 Issue 较多的仓库维护场景：维护者可以先处理高置信重复候选，把后创建的 Issue 链接到原始问题，减少重复排查成本；也可以通过 `--threshold` 调整相似度阈值，通过 `--max-pairs` 控制输出规模。输出支持 `table`、`markdown` 和 `json`，适合终端查看、Issue 评论草稿或自动化脚本消费。
+
+命令保持安全边界，不会自动关闭、评论或修改 Issue。测试覆盖了本地 JSON 输入、状态和数量过滤、远端只读查询参数、相似度排序、中文 markdown 渲染、table 输出和 shortcut 注册。
diff --git a/shortcuts/workflow/issue_dedupe.go b/shortcuts/workflow/issue_dedupe.go
new file mode 100644
index 0000000..61b3dd8
--- /dev/null
+++ b/shortcuts/workflow/issue_dedupe.go
@@ -0,0 +1,444 @@
+package workflow
+
+import (
+	"bytes"
+	"fmt"
+	"math"
+	"os"
+	"sort"
+	"strings"
+	"text/tabwriter"
+	"unicode"
+
+	"github.com/gitlink-org/gitlink-cli/cmd/cmdutil"
+	"github.com/gitlink-org/gitlink-cli/shortcuts/common"
+)
+
+type IssueDedupeInput struct {
+	Repository string       `json:"repository"`
+	Issues     []IssueInput `json:"issues"`
+	Source     string       `json:"source"`
+}
+
+type IssueDedupeResult struct {
+	Repository       string            `json:"repository"`
+	TotalIssues      int               `json:"total_issues"`
+	CandidatePairs   int               `json:"candidate_pairs"`
+	HighConfidence   int               `json:"high_confidence"`
+	MediumConfidence int               `json:"medium_confidence"`
+	LowConfidence    int               `json:"low_confidence"`
+	Threshold        int               `json:"threshold"`
+	Pairs            []IssueDedupePair `json:"pairs"`
+	Recommendations  []string          `json:"recommendations"`
+	Source           string            `json:"source"`
+}
+
+type IssueDedupePair struct {
+	Score       int      `json:"score"`
+	Confidence  string   `json:"confidence"`
+	Primary     IssueRef `json:"primary"`
+	Duplicate   IssueRef `json:"duplicate"`
+	SharedTerms []string `json:"shared_terms"`
+	Reason      string   `json:"reason"`
+}
+
+func newIssueDedupeShortcut() *common.Shortcut {
+	return &common.Shortcut{
+		Name:        "issue-dedupe",
+		Description: "Find likely duplicate issues with read-only local similarity rules",
+		Flags: []common.Flag{
+			{Name: "from", Usage: "Read issues from a JSON file. Supports an array or an object with an issues field"},
+			{Name: "state", Short: "s", Usage: "Remote issue state to fetch", Default: "open"},
+			{Name: "page", Short: "p", Usage: "Remote issue page", Default: "1"},
+			{Name: "limit", Short: "l", Usage: "Maximum issues to analyze", Default: "50"},
+			{Name: "threshold", Usage: "Minimum duplicate score from 0 to 100", Default: "55"},
+			{Name: "max-pairs", Usage: "Maximum duplicate pairs to output", Default: "20"},
+			{Name: "lang", Usage: "Output language: en or zh-CN", Default: langEN},
+		},
+		Run: runIssueDedupe,
+	}
+}
+
+func runIssueDedupe(ctx *common.RuntimeContext) error {
+	lang := normalizeLang(ctx.Arg("lang"))
+	input, threshold, maxPairs, err := collectIssueDedupeInput(ctx)
+	if err != nil {
+		return err
+	}
+	result := AnalyzeIssueDedupe(input, threshold, maxPairs, lang)
+	format := ctx.Format
+	if strings.TrimSpace(cmdutil.Format) == "" {
+		format = "table"
+	}
+	rendered, err := RenderIssueDedupe(result, format, lang)
+	if err != nil {
+		return err
+	}
+	_, err = fmt.Fprint(os.Stdout, rendered)
+	return err
+}
+
+func collectIssueDedupeInput(ctx *common.RuntimeContext) (IssueDedupeInput, int, int, error) {
+	threshold, err := parseIntArg(ctx.Arg("threshold"), 55, "threshold")
+	if err != nil {
+		return IssueDedupeInput{}, 0, 0, err
+	}
+	if threshold > 100 {
+		return IssueDedupeInput{}, 0, 0, fmt.Errorf("invalid --threshold %q: must be between 0 and 100", ctx.Arg("threshold"))
+	}
+	maxPairs, err := parseIntArg(ctx.Arg("max-pairs"), 20, "max-pairs")
+	if err != nil {
+		return IssueDedupeInput{}, 0, 0, err
+	}
+	if path := strings.TrimSpace(ctx.Arg("from")); path != "" {
+		issues, err := readIssueInputs(path)
+		if err != nil {
+			return IssueDedupeInput{}, 0, 0, err
+		}
+		limit, err := parseIntArg(ctx.Arg("limit"), 50, "limit")
+		if err != nil {
+			return IssueDedupeInput{}, 0, 0, err
+		}
+		return IssueDedupeInput{
+			Repository: repositoryFromContext(ctx, ""),
+			Issues:     filterIssueInputs(issues, ctx.Arg("state"), limit),
+			Source:     "local-json",
+		}, threshold, maxPairs, nil
+	}
+	limit, err := parseIntArg(ctx.Arg("limit"), 50, "limit")
+	if err != nil {
+		return IssueDedupeInput{}, 0, 0, err
+	}
+	page, err := parseIntArg(ctx.Arg("page"), 1, "page")
+	if err != nil {
+		return IssueDedupeInput{}, 0, 0, err
+	}
+	state := strings.TrimSpace(ctx.Arg("state"))
+	if state == "" {
+		state = "open"
+	}
+	issues, err := FetchIssuesForTriage(ctx, TriageFetchOptions{
+		State: state,
+		Limit: limit,
+		Page:  page,
+	})
+	if err != nil {
+		return IssueDedupeInput{}, 0, 0, fmt.Errorf("workflow +issue-dedupe remote mode requires --owner and --repo or a Git remote: %w", err)
+	}
+	return IssueDedupeInput{
+		Repository: repositoryFromContext(ctx, ""),
+		Issues:     issues,
+		Source:     "remote-read-only-fetch",
+	}, threshold, maxPairs, nil
+}
+
+func AnalyzeIssueDedupe(input IssueDedupeInput, threshold int, maxPairs int, lang string) IssueDedupeResult {
+	lang = normalizeLang(lang)
+	if threshold < 0 {
+		threshold = 0
+	}
+	if threshold > 100 {
+		threshold = 100
+	}
+	repository := strings.TrimSpace(input.Repository)
+	if repository == "" {
+		repository = "local"
+	}
+	source := strings.TrimSpace(input.Source)
+	if source == "" {
+		source = "local"
+	}
+	fingerprints := make([]issueFingerprint, 0, len(input.Issues))
+	for _, issue := range input.Issues {
+		fp := buildIssueFingerprint(issue)
+		if len(fp.Terms) > 0 {
+			fingerprints = append(fingerprints, fp)
+		}
+	}
+	pairs := []IssueDedupePair{}
+	for i := 0; i < len(fingerprints); i++ {
+		for j := i + 1; j < len(fingerprints); j++ {
+			score, shared := scoreIssueSimilarity(fingerprints[i], fingerprints[j])
+			if score < threshold {
+				continue
+			}
+			pairs = append(pairs, buildIssueDedupePair(fingerprints[i], fingerprints[j], score, shared, lang))
+		}
+	}
+	sort.SliceStable(pairs, func(i, j int) bool {
+		if pairs[i].Score != pairs[j].Score {
+			return pairs[i].Score > pairs[j].Score
+		}
+		return pairs[i].Primary.Number < pairs[j].Primary.Number
+	})
+	if maxPairs > 0 && len(pairs) > maxPairs {
+		pairs = pairs[:maxPairs]
+	}
+	result := IssueDedupeResult{
+		Repository:     repository,
+		TotalIssues:    len(input.Issues),
+		CandidatePairs: len(pairs),
+		Threshold:      threshold,
+		Pairs:          pairs,
+		Source:         source,
+	}
+	for _, pair := range pairs {
+		switch pair.Confidence {
+		case "high":
+			result.HighConfidence++
+		case "medium":
+			result.MediumConfidence++
+		default:
+			result.LowConfidence++
+		}
+	}
+	result.Recommendations = issueDedupeRecommendations(result, lang)
+	return result
+}
+
+type issueFingerprint struct {
+	Issue IssueInput
+	Terms map[string]int
+}
+
+func buildIssueFingerprint(issue IssueInput) issueFingerprint {
+	terms := map[string]int{}
+	for _, token := range tokenizeIssueText(issue.Title + " " + issue.Body) {
+		terms[token]++
+	}
+	for _, label := range issue.Labels {
+		for _, token := range tokenizeIssueText(label) {
+			terms[token] += 2
+		}
+	}
+	return issueFingerprint{Issue: issue, Terms: terms}
+}
+
+func tokenizeIssueText(value string) []string {
+	value = strings.ToLower(value)
+	var b strings.Builder
+	for _, r := range value {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) {
+			b.WriteRune(r)
+		} else {
+			b.WriteByte(' ')
+		}
+	}
+	raw := strings.Fields(b.String())
+	tokens := make([]string, 0, len(raw))
+	for _, token := range raw {
+		if len([]rune(token)) < 3 || issueDedupeStopWords[token] {
+			continue
+		}
+		tokens = append(tokens, token)
+	}
+	return tokens
+}
+
+var issueDedupeStopWords = map[string]bool{
+	"the": true, "and": true, "for": true, "with": true, "when": true, "from": true, "this": true, "that": true,
+	"can": true, "not": true, "cannot": true, "should": true, "would": true, "could": true, "please": true,
+	"issue": true, "bug": true, "error": true, "failed": true, "failure": true, "using": true, "after": true,
+}
+
+func scoreIssueSimilarity(a, b issueFingerprint) (int, []string) {
+	intersectionWeight := 0
+	unionWeight := 0
+	shared := []string{}
+	seen := map[string]bool{}
+	for term, weightA := range a.Terms {
+		weightB := b.Terms[term]
+		if weightB > 0 {
+			intersectionWeight += minInt(weightA, weightB)
+			shared = append(shared, term)
+		}
+		unionWeight += maxIssueDedupeInt(weightA, weightB)
+		seen[term] = true
+	}
+	for term, weightB := range b.Terms {
+		if seen[term] {
+			continue
+		}
+		unionWeight += weightB
+	}
+	if unionWeight == 0 {
+		return 0, nil
+	}
+	sort.Strings(shared)
+	score := int(math.Round(float64(intersectionWeight) / float64(unionWeight) * 100))
+	if sameNonZeroIssueType(a.Issue, b.Issue) {
+		score += 8
+	}
+	if score > 100 {
+		score = 100
+	}
+	return score, limitIssueDedupeTerms(shared, 8)
+}
+
+func sameNonZeroIssueType(a, b IssueInput) bool {
+	typeA := AnalyzeIssue(a, langEN).DetectedType
+	typeB := AnalyzeIssue(b, langEN).DetectedType
+	return typeA != IssueTypeUnknown && typeA == typeB
+}
+
+func buildIssueDedupePair(a, b issueFingerprint, score int, shared []string, lang string) IssueDedupePair {
+	confidence := "low"
+	if score >= 80 {
+		confidence = "high"
+	} else if score >= 65 {
+		confidence = "medium"
+	}
+	primary := issueRefFromInput(a.Issue)
+	duplicate := issueRefFromInput(b.Issue)
+	if duplicate.Number > 0 && (primary.Number == 0 || duplicate.Number < primary.Number) {
+		primary, duplicate = duplicate, primary
+	}
+	reason := fmt.Sprintf("shared terms: %s", strings.Join(shared, ", "))
+	if normalizeLang(lang) == langZH {
+		reason = fmt.Sprintf("共享关键词：%s", strings.Join(shared, "、"))
+	}
+	return IssueDedupePair{
+		Score:       score,
+		Confidence:  confidence,
+		Primary:     primary,
+		Duplicate:   duplicate,
+		SharedTerms: shared,
+		Reason:      reason,
+	}
+}
+
+func issueRefFromInput(issue IssueInput) IssueRef {
+	return IssueRef{
+		ID:     issue.ID,
+		Number: issue.Number,
+		Title:  issue.Title,
+		URL:    issue.URL,
+		Author: issue.Author,
+		State:  issue.State,
+	}
+}
+
+func issueDedupeRecommendations(result IssueDedupeResult, lang string) []string {
+	zh := normalizeLang(lang) == langZH
+	if result.CandidatePairs == 0 {
+		if zh {
+			return []string{"未发现达到阈值的重复候选，可以按常规 Issue 流程继续处理。"}
+		}
+		return []string{"No duplicate candidates reached the threshold; continue with normal issue triage."}
+	}
+	recs := []string{}
+	if result.HighConfidence > 0 {
+		if zh {
+			recs = append(recs, "优先人工确认高置信候选，必要时在后创建的 Issue 中链接原始 Issue。")
+		} else {
+			recs = append(recs, "Review high-confidence candidates first and link newer issues to the original when appropriate.")
+		}
+	}
+	if zh {
+		recs = append(recs, "命令只提供候选对，不会自动关闭、评论或修改 Issue。")
+	} else {
+		recs = append(recs, "The command only reports candidates; it never closes, comments on, or edits issues.")
+	}
+	return recs
+}
+
+func RenderIssueDedupe(result IssueDedupeResult, format string, lang string) (string, error) {
+	var buf bytes.Buffer
+	switch normalizeFormat(format) {
+	case "json":
+		if err := writeJSON(&buf, result); err != nil {
+			return "", err
+		}
+	case "markdown":
+		if err := writeIssueDedupeMarkdown(&buf, result, lang); err != nil {
+			return "", err
+		}
+	case "table":
+		if err := writeIssueDedupeTable(&buf, result); err != nil {
+			return "", err
+		}
+	default:
+		return "", fmt.Errorf("unsupported workflow output format %q", format)
+	}
+	return buf.String(), nil
+}
+
+func writeIssueDedupeMarkdown(buf *bytes.Buffer, result IssueDedupeResult, lang string) error {
+	title := "Issue Duplicate Candidates"
+	if normalizeLang(lang) == langZH {
+		title = "Issue 重复候选"
+	}
+	if _, err := fmt.Fprintf(buf, "# %s\n\n", title); err != nil {
+		return err
+	}
+	if _, err := fmt.Fprintf(buf, "- Repository: `%s`\n- Issues analyzed: `%d`\n- Candidate pairs: `%d`\n- Threshold: `%d`\n- Source: `%s`\n\n",
+		result.Repository, result.TotalIssues, result.CandidatePairs, result.Threshold, result.Source); err != nil {
+		return err
+	}
+	if _, err := fmt.Fprintln(buf, "## Candidates"); err != nil {
+		return err
+	}
+	if _, err := fmt.Fprintln(buf); err != nil {
+		return err
+	}
+	if len(result.Pairs) == 0 {
+		_, err := fmt.Fprintln(buf, "- No duplicate candidates.")
+		return err
+	}
+	for _, pair := range result.Pairs {
+		if _, err := fmt.Fprintf(buf, "- `%s` score `%d`: #%d %s -> #%d %s\n",
+			pair.Confidence, pair.Score, pair.Primary.Number, pair.Primary.Title, pair.Duplicate.Number, pair.Duplicate.Title); err != nil {
+			return err
+		}
+		if _, err := fmt.Fprintf(buf, "  - %s\n", pair.Reason); err != nil {
+			return err
+		}
+	}
+	if _, err := fmt.Fprintln(buf); err != nil {
+		return err
+	}
+	if _, err := fmt.Fprintln(buf, "## Recommendations"); err != nil {
+		return err
+	}
+	for _, rec := range result.Recommendations {
+		if _, err := fmt.Fprintf(buf, "- %s\n", rec); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func writeIssueDedupeTable(buf *bytes.Buffer, result IssueDedupeResult) error {
+	tw := tabwriter.NewWriter(buf, 0, 0, 2, ' ', 0)
+	if _, err := fmt.Fprintln(tw, "SCORE\tCONFIDENCE\tPRIMARY\tDUPLICATE\tSHARED_TERMS"); err != nil {
+		return err
+	}
+	for _, pair := range result.Pairs {
+		if _, err := fmt.Fprintf(tw, "%d\t%s\t#%d %s\t#%d %s\t%s\n",
+			pair.Score,
+			pair.Confidence,
+			pair.Primary.Number,
+			truncateTableText(pair.Primary.Title, 48),
+			pair.Duplicate.Number,
+			truncateTableText(pair.Duplicate.Title, 48),
+			strings.Join(pair.SharedTerms, ","),
+		); err != nil {
+			return err
+		}
+	}
+	return tw.Flush()
+}
+
+func limitIssueDedupeTerms(values []string, limit int) []string {
+	if limit <= 0 || len(values) <= limit {
+		return values
+	}
+	return values[:limit]
+}
+
+func maxIssueDedupeInt(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
diff --git a/shortcuts/workflow/issue_dedupe_test.go b/shortcuts/workflow/issue_dedupe_test.go
new file mode 100644
index 0000000..4d71781
--- /dev/null
+++ b/shortcuts/workflow/issue_dedupe_test.go
@@ -0,0 +1,148 @@
+package workflow
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/gitlink-org/gitlink-cli/internal/client"
+	"github.com/gitlink-org/gitlink-cli/shortcuts/common"
+)
+
+func TestAnalyzeIssueDedupeFindsDuplicatePairs(t *testing.T) {
+	result := AnalyzeIssueDedupe(IssueDedupeInput{
+		Repository: "owner/repo",
+		Source:     "local-json",
+		Issues: []IssueInput{
+			{Number: 1, Title: "Login fails on Windows with token auth", Body: "The token login command fails on Windows credential manager.", State: "open", Labels: []string{"bug", "auth"}},
+			{Number: 2, Title: "Token login failure in Windows credential manager", Body: "Auth token login cannot complete on Windows.", State: "open", Labels: []string{"bug", "auth"}},
+			{Number: 3, Title: "Add docs for release upload", Body: "Document release asset upload examples.", State: "open", Labels: []string{"docs"}},
+		},
+	}, 35, 10, "en")
+
+	if result.CandidatePairs != 1 {
+		t.Fatalf("CandidatePairs = %d, want 1: %+v", result.CandidatePairs, result.Pairs)
+	}
+	pair := result.Pairs[0]
+	if pair.Primary.Number != 1 || pair.Duplicate.Number != 2 {
+		t.Fatalf("pair = #%d/#%d, want #1/#2", pair.Primary.Number, pair.Duplicate.Number)
+	}
+	if pair.Score < 35 || len(pair.SharedTerms) == 0 {
+		t.Fatalf("score/shared = %d/%v, want duplicate signal", pair.Score, pair.SharedTerms)
+	}
+	if len(result.Recommendations) == 0 {
+		t.Fatal("expected recommendations")
+	}
+}
+
+func TestCollectIssueDedupeInputFromFileFiltersStateAndLimit(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "issues.json")
+	writeJSONFixture(t, path, map[string]interface{}{
+		"issues": []IssueInput{
+			{Number: 1, Title: "open issue", State: "open"},
+			{Number: 2, Title: "closed issue", State: "closed"},
+			{Number: 3, Title: "second open issue", State: "open"},
+		},
+	})
+	ctx := &common.RuntimeContext{
+		Args: map[string]string{
+			"from":      path,
+			"state":     "open",
+			"limit":     "1",
+			"threshold": "55",
+			"max-pairs": "20",
+		},
+	}
+
+	input, threshold, maxPairs, err := collectIssueDedupeInput(ctx)
+	if err != nil {
+		t.Fatalf("collectIssueDedupeInput returned error: %v", err)
+	}
+	if threshold != 55 || maxPairs != 20 {
+		t.Fatalf("threshold/maxPairs = %d/%d, want 55/20", threshold, maxPairs)
+	}
+	if len(input.Issues) != 1 || input.Issues[0].Number != 1 {
+		t.Fatalf("issues = %+v, want only first open issue", input.Issues)
+	}
+}
+
+func TestCollectIssueDedupeInputRemoteFetch(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != "GET" || r.URL.Path != "/v1/owner/repo/issues.json" {
+			t.Fatalf("unexpected request: %s %s", r.Method, r.URL.Path)
+		}
+		if got := r.URL.Query().Get("state"); got != "open" {
+			t.Fatalf("state = %q, want open", got)
+		}
+		if got := r.URL.Query().Get("page"); got != "2" {
+			t.Fatalf("page = %q, want 2", got)
+		}
+		if got := r.URL.Query().Get("limit"); got != "5" {
+			t.Fatalf("limit = %q, want 5", got)
+		}
+		writeWorkflowJSON(t, w, map[string]interface{}{
+			"issues": []map[string]interface{}{
+				{"number": 7, "title": "Login fails", "description": "Token login fails", "state": "open"},
+			},
+		})
+	}))
+	defer server.Close()
+	ctx := &common.RuntimeContext{
+		Client: &client.Client{HTTP: server.Client(), BaseURL: server.URL},
+		Owner:  "owner",
+		Repo:   "repo",
+		Args: map[string]string{
+			"state":     "open",
+			"page":      "2",
+			"limit":     "5",
+			"threshold": "55",
+			"max-pairs": "20",
+		},
+	}
+
+	input, _, _, err := collectIssueDedupeInput(ctx)
+	if err != nil {
+		t.Fatalf("collectIssueDedupeInput remote returned error: %v", err)
+	}
+	if input.Source != "remote-read-only-fetch" || len(input.Issues) != 1 || input.Issues[0].Number != 7 {
+		t.Fatalf("input = %+v, want remote issue #7", input)
+	}
+}
+
+func TestRenderIssueDedupeMarkdownAndTable(t *testing.T) {
+	result := AnalyzeIssueDedupe(IssueDedupeInput{
+		Repository: "owner/repo",
+		Issues: []IssueInput{
+			{Number: 1, Title: "Login token fails on Windows", Body: "credential manager auth failure", Labels: []string{"auth"}},
+			{Number: 2, Title: "Windows token login auth failure", Body: "credential manager login fails", Labels: []string{"auth"}},
+		},
+	}, 30, 10, "zh-CN")
+
+	markdown, err := RenderIssueDedupe(result, "markdown", "zh-CN")
+	if err != nil {
+		t.Fatalf("RenderIssueDedupe markdown returned error: %v", err)
+	}
+	if !strings.Contains(markdown, "# Issue 重复候选") || !strings.Contains(markdown, "共享关键词") {
+		t.Fatalf("markdown output missing expected content:\n%s", markdown)
+	}
+
+	table, err := RenderIssueDedupe(result, "table", "en")
+	if err != nil {
+		t.Fatalf("RenderIssueDedupe table returned error: %v", err)
+	}
+	if !strings.Contains(table, "SCORE") || !strings.Contains(table, "#1") {
+		t.Fatalf("table output missing expected content:\n%s", table)
+	}
+}
+
+func TestShortcutsExposeIssueDedupe(t *testing.T) {
+	names := map[string]bool{}
+	for _, shortcut := range Shortcuts() {
+		names[shortcut.Name] = true
+	}
+	if !names["issue-dedupe"] {
+		t.Fatal("Shortcuts missing issue-dedupe")
+	}
+}
diff --git a/shortcuts/workflow/workflow.go b/shortcuts/workflow/workflow.go
index 6d5f01e..2e297a1 100644
--- a/shortcuts/workflow/workflow.go
+++ b/shortcuts/workflow/workflow.go
@@ -25,7 +25,7 @@ func Shortcuts() []*common.Shortcut {
 		newHealthShortcut(),
 		newPRSummaryShortcut(),
 		newRepoReportShortcut(),
-		newReleaseReadinessShortcut(),
+		newIssueDedupeShortcut(),
 	}
 }