diff --git a/.gitea/workflows/release.yml b/.gitea/workflows/release.yml
index 8e8f3a9..ca03790 100644
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -92,10 +92,13 @@ jobs:
           ) as archive:
               for name in manifest["files"]:
                   archive.write(root / name, folder + name)
-              archive.write(
-                  root / "dist/manifest.json",
-                  folder + "manifest.json"
-              )
+              for descriptor in manifest.get("modules", {}).values():
+                  component = json.loads(
+                      (root / descriptor["manifest"]).read_text(encoding="utf-8")
+                  )
+                  for name in component["files"]:
+                      archive.write(root / name, folder + name)
+              archive.write(root / "dist/manifest.json", folder + "manifest.json")
           '@ | python - $stage $package
           if ($LASTEXITCODE -ne 0) { throw '打包失败' }
 
@@ -135,7 +138,14 @@ jobs:
             -Body $body
 
           $assetApi = "$api/$($release.id)/assets"
-          foreach ($file in @($manifestPath, $package)) {
+          $moduleManifests = @(
+            Get-ChildItem (Join-Path $stage 'dist/modules') `
+              -Filter '*.json' -ErrorAction SilentlyContinue
+          )
+          $releaseFiles = @($manifestPath)
+          $releaseFiles += $moduleManifests
+          $releaseFiles += $package
+          foreach ($file in $releaseFiles) {
             curl.exe --fail --silent --show-error `
               -H "Authorization: token $env:GITEA_TOKEN" `
               -F "attachment=@$file" `
@@ -151,4 +161,4 @@ jobs:
             -ContentType 'application/json' `
             -Body '{"draft":false}' | Out-Null
 
-          Write-Host "发布完成：$tag"
\ No newline at end of file
+          Write-Host "发布完成：$tag"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0dcab3a..4896f9c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -90,10 +90,19 @@ jobs:
           Copy-Item -LiteralPath $manifestPath `
             -Destination (Join-Path $env:GITHUB_WORKSPACE `
               'dist/manifest.json') -Force
+          $moduleManifestDir = Join-Path $source 'dist/modules'
+          if (Test-Path $moduleManifestDir) {
+            New-Item -ItemType Directory -Force `
+              (Join-Path $env:GITHUB_WORKSPACE 'dist/modules') | Out-Null
+            Copy-Item -Path (Join-Path $moduleManifestDir '*.json') `
+              -Destination (Join-Path $env:GITHUB_WORKSPACE 'dist/modules') `
+              -Force
+          }
           git config user.name 'github-actions[bot]'
           git config user.email `
             '41898282+github-actions[bot]@users.noreply.github.com'
           git add dist/manifest.json
+          git add dist/modules
           if ($LASTEXITCODE -ne 0) { throw '暂存清单失败' }
           git commit -m "Prepare manifest for $tag"
           if ($LASTEXITCODE -ne 0) { throw '提交清单失败' }
@@ -143,10 +152,13 @@ jobs:
           ) as archive:
               for name in manifest["files"]:
                   archive.write(root / name, folder + name)
-              archive.write(
-                  root / "dist/manifest.json",
-                  folder + "manifest.json"
-              )
+              for descriptor in manifest.get("modules", {}).values():
+                  component = json.loads(
+                      (root / descriptor["manifest"]).read_text(encoding="utf-8")
+                  )
+                  for name in component["files"]:
+                      archive.write(root / name, folder + name)
+              archive.write(root / "dist/manifest.json", folder + "manifest.json")
           '@ | python - $stage $package
           if ($LASTEXITCODE -ne 0) { throw '打包失败' }
 
diff --git a/.gitignore b/.gitignore
index 839bf71..eadf95c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,13 @@
 log.txt
+findings.md
+progress.md
+task_plan.md
+
 dist/manifest.json
+
 tools/__pycache__/
 tools/test_update.mjs
+tools/test_intent.mjs
+
 /mengsan/.planning/
 /mengsan/verification
\ No newline at end of file
diff --git a/extension.js b/extension.js
index 5fe1e15..0cca5ce 100644
--- a/extension.js
+++ b/extension.js
@@ -250,9 +250,22 @@ shuYing.precontent = async () => {
     shuYing.initCSS();
     shuYing.initFunction();
     shuYing.initConfig();
-    const registerMengsan = await shuYing.loadModule("./mengsan/register.js", "梦三模式", true);
-    if (typeof registerMengsan == "function") {
-        registerMengsan();
+    const mengsanState = lib.config.shuYing_mengsan_installed_version;
+    let hasMengsan = !!mengsanState && mengsanState != "disabled";
+    if (!mengsanState && typeof game.checkFile != "function") {
+        hasMengsan = true;
+    }
+    else if (!mengsanState && typeof game.checkFile == "function") {
+        hasMengsan = await new Promise(resolve => {
+            game.checkFile("extension/术樱包/mengsan/register.js",
+                result => resolve(result == 1), () => resolve(false));
+        });
+    }
+    if (hasMengsan) {
+        const registerMengsan = await shuYing.loadModule(
+            "./mengsan/register.js", "梦三模式", true
+        );
+        if (typeof registerMengsan == "function") registerMengsan();
     }
     initShuYingMenu({ lib, game, ui, shuYing, updater });
     shuYing.getVersion();
diff --git a/mengsan/assets/intent/Intent_buff.png b/mengsan/assets/intent/Intent_buff.png
new file mode 100644
index 0000000..921ff37
Binary files /dev/null and b/mengsan/assets/intent/Intent_buff.png differ
diff --git a/mengsan/assets/intent/Intent_card_debuff.png b/mengsan/assets/intent/Intent_card_debuff.png
new file mode 100644
index 0000000..c0b21f7
Binary files /dev/null and b/mengsan/assets/intent/Intent_card_debuff.png differ
diff --git a/mengsan/assets/intent/Intent_death_blow.png b/mengsan/assets/intent/Intent_death_blow.png
new file mode 100644
index 0000000..b1b6736
Binary files /dev/null and b/mengsan/assets/intent/Intent_death_blow.png differ
diff --git a/mengsan/assets/intent/Intent_defend.png b/mengsan/assets/intent/Intent_defend.png
new file mode 100644
index 0000000..e4ee37c
Binary files /dev/null and b/mengsan/assets/intent/Intent_defend.png differ
diff --git a/mengsan/assets/intent/Intent_escape.png b/mengsan/assets/intent/Intent_escape.png
new file mode 100644
index 0000000..1865075
Binary files /dev/null and b/mengsan/assets/intent/Intent_escape.png differ
diff --git a/mengsan/assets/intent/Intent_heal.png b/mengsan/assets/intent/Intent_heal.png
new file mode 100644
index 0000000..ece0f92
Binary files /dev/null and b/mengsan/assets/intent/Intent_heal.png differ
diff --git a/mengsan/assets/intent/Intent_sleep.png b/mengsan/assets/intent/Intent_sleep.png
new file mode 100644
index 0000000..79bfec3
Binary files /dev/null and b/mengsan/assets/intent/Intent_sleep.png differ
diff --git a/mengsan/assets/intent/Intent_status_card.png b/mengsan/assets/intent/Intent_status_card.png
new file mode 100644
index 0000000..24fdaeb
Binary files /dev/null and b/mengsan/assets/intent/Intent_status_card.png differ
diff --git a/mengsan/assets/intent/Intent_stun.png b/mengsan/assets/intent/Intent_stun.png
new file mode 100644
index 0000000..be2ae32
Binary files /dev/null and b/mengsan/assets/intent/Intent_stun.png differ
diff --git a/mengsan/assets/intent/Intent_summon.png b/mengsan/assets/intent/Intent_summon.png
new file mode 100644
index 0000000..d77d780
Binary files /dev/null and b/mengsan/assets/intent/Intent_summon.png differ
diff --git a/mengsan/assets/intent/Intent_unknown.png b/mengsan/assets/intent/Intent_unknown.png
new file mode 100644
index 0000000..49e3231
Binary files /dev/null and b/mengsan/assets/intent/Intent_unknown.png differ
diff --git a/mengsan/config.js b/mengsan/config.js
index 45ae2e1..8c2bdb8 100644
--- a/mengsan/config.js
+++ b/mengsan/config.js
@@ -6,7 +6,7 @@ const mengsanConfig = {
     saveKey: "mengsan_run_shuying",
     profileKey: "mengsan_profile_shuying",
     schemaVersion: 1,
-    mapLayoutVersion: 7,
+    mapLayoutVersion: 8,
     routeCount: 4,
     characters: ["mengsan_liubei_shuying"],
     acts: contentRegistry.acts,
@@ -16,6 +16,7 @@ const mengsanConfig = {
         elite: "精英",
         event: "事件",
         story: "剧情",
+        chest: "宝箱",
         rest: "休息",
         shop: "商店",
         boss: "Boss",
diff --git a/mengsan/content/acts/act1/map.js b/mengsan/content/acts/act1/map.js
index 9650b20..3382917 100644
--- a/mengsan/content/acts/act1/map.js
+++ b/mengsan/content/acts/act1/map.js
@@ -1,9 +1,17 @@
 const act1Map = {
     id: "act1",
     name: "第一关·初梦",
-    floorNodes: [1, 4, 4, 4, 1],
-    minFloorNodes: [1, 3, 3, 3, 1],
+    floorNodes: [
+        1, 4, 4, 4, 4, 4, 4, 4, 4,
+        4, 4, 4, 4, 4, 4, 4, 1,
+    ],
+    minFloorNodes: [
+        1, 3, 3, 3, 3, 3, 3, 3, 3,
+        3, 3, 3, 3, 3, 3, 3, 1,
+    ],
     nodeWeights: { battle: 65, event: 15, rest: 10, shop: 10 },
+    requiredFloors: { 2: "battle", 10: "chest", 16: "rest" },
+    chestRewardPool: "act1.pool.chest",
     fixedNodes: [
         {
             floor: 0,
diff --git a/mengsan/content/acts/act1/rewards.js b/mengsan/content/acts/act1/rewards.js
index 0374d05..d16bdaf 100644
--- a/mengsan/content/acts/act1/rewards.js
+++ b/mengsan/content/acts/act1/rewards.js
@@ -1,4 +1,9 @@
 export const rewardPools = {
+    "act1.pool.chest": [
+        "shared.reward.item.handCharm",
+        "shared.reward.maxHp",
+        "shared.reward.support.scout",
+    ],
     "act1.pool.story.scoutGift": [
         "shared.reward.support.scout",
         "shared.reward.card.sha",
diff --git a/mengsan/map/renderer.js b/mengsan/map/renderer.js
index afcfcf7..3c61682 100644
--- a/mengsan/map/renderer.js
+++ b/mengsan/map/renderer.js
@@ -10,6 +10,8 @@ const iconPaths = {
     elite: "M16 3l10 5v9c0 6-10 12-10 12S6 23 6 17V8zM10 13l6 4 6-4M16 17v7M11 5l5-3 5 3",
     event: "M10 10c0-9 15-8 15 0 0 5-9 5-9 10M16 25v1",
     story: "M8 5h18v20H10c-5 0-5-6 0-6h16M8 5c-5 0-5 6 0 6h3V5M12 10h10M12 14h8",
+    chest: "M4 13h24v15H4zM2 8h28v6H2zM16 8v20" +
+        "M9 8c-4-3-1-7 3-5l4 5M23 8c4-3 1-7-3-5l-4 5",
     rest: "M3 26L16 5l13 21zM10 26l6-11 6 11M16 5V2M7 28h19",
     shop: "M4 12l3-7h18l3 7M4 12v4h24v-4M7 16v12h18V16M12 28v-8h8v8M3 28h26M11 6v6M21 6v6",
     boss: "M6 28V5M6 6c8-8 12 6 22-1v16c-10 7-14-7-22 1M11 10l11 7M22 10l-11 7M3 28h9",
@@ -60,6 +62,7 @@ const nodeColor = {
     elite: "#7e3f79",
     event: "#477aa6",
     story: "#8c6a34",
+    chest: "#a27b35",
     rest: "#3f8560",
     shop: "#a27b35",
     boss: "#a62727",
@@ -353,6 +356,7 @@ export const showMap = run => new Promise(resolve => {
     viewport.addEventListener("pointerdown", event => {
         if (!event.isPrimary || event.button !== 0) return;
         suppressClick = false;
+        if (event.pointerType !== "mouse") return;
         drag = { id: event.pointerId, y: event.clientY, top: viewport.scrollTop, moved: false };
     });
     viewport.addEventListener("pointermove", event => {
@@ -386,6 +390,10 @@ export const showMap = run => new Promise(resolve => {
         }
     }, true);
     const map = ui.create.div(".mengsan-map-shuying", viewport);
+    const floorCount = Math.max(...run.map.nodes.map(node =>
+        Math.floor(node.floor))) + 1;
+    map.style.setProperty("--mengsan-map-min-height",
+        `${floorCount * 100}px`);
     const landscape = document.createElementNS("http://www.w3.org/2000/svg", "svg");
     landscape.classList.add("mengsan-ink-landscape-shuying");
     landscape.setAttribute("viewBox", "0 0 800 1200");
diff --git a/mengsan/mode.js b/mengsan/mode.js
index e62e2af..7aad497 100644
--- a/mengsan/mode.js
+++ b/mengsan/mode.js
@@ -4,6 +4,21 @@ import { buildBattlePlan, consumeSupports, createBattleDirector, grantSupport }
 import { installPersonalPiles } from "./runtime/personal-piles.js";
 import { createMonster } from "./runtime/monster.js";
 import { mountEnemyIntent } from "./runtime/intent-display.js";
+import { attackHitCount, outgoingAttackDamage } from "./runtime/intent-damage.js";
+import {
+    beginDeathBlow,
+    finishDeathBlow,
+    hasPendingDeathBlow,
+    isDeathBlowIntent,
+} from "./runtime/death-blow.js";
+import {
+    STUN_INTENT,
+    applyStun,
+    clearStun,
+    finishStunnedTurn,
+    isStunned,
+    skipStunnedAction,
+} from "./runtime/stun-intent.js";
 import { selectFlyconidMove, recordFlyconidAction } from "./runtime/flyconid-intent.js";
 import { PLAYER_ENERGY, PLAYER_HAND_LIMIT, canPayCard, payCard, isActiveCardUse } from "./runtime/combat-rules.js";
 import { mountBattlePiles } from "./runtime/card-library.js";
@@ -172,6 +187,13 @@ const finishUtilityNode = async (run, node) => {
         ]);
         applyReward(run, choice);
     }
+    else if (node.type == "chest") {
+        await chooseReward(run, {
+            rewardPool: config.acts[run.actIndex].chestRewardPool ||
+                "shared.pool.boss.premium",
+            rewardTitle: "宝箱奖励（三选一）",
+        });
+    }
     else if (node.type == "shop") {
         const price = 20;
         const choice = await chooseButtons("商店 Demo", [
@@ -186,12 +208,18 @@ const finishUtilityNode = async (run, node) => {
         }
     }
     else {
-        const choice = await chooseButtons("随机事件", [
-            { id: "branch", name: "调查异象", description: "在当前路线后插入一个额外剧情战斗节点" },
+        const choices = [
             { id: "gold", name: "收下钱袋", description: "获得 15 金币" },
-        ]);
+        ];
+        if (run.actIndex !== 0) {
+            choices.unshift({
+                id: "branch", name: "调查异象",
+                description: "在当前路线后插入一个额外剧情战斗节点",
+            });
+        }
+        const choice = await chooseButtons("随机事件", choices);
         if (choice == "branch") insertStoryNode(run, node.id);
-        else {
+        else if (choice == "gold") {
             run.player.gold += 15;
             run.statistics.goldEarned += 15;
         }
@@ -286,10 +314,17 @@ const executeFlyconidIntent = async player => {
     game.log(player, "消耗1费用发动", move.name);
     const target = game.me;
     if (!target?.isAlive() || !player.isAlive()) return;
+    if (isDeathBlowIntent(move)) {
+        await beginDeathBlow(player, target, move);
+        return;
+    }
     if (move.damage != null) {
-        const hit = target.damage(move.damage, player);
-        hit.mengsanAttack_shuying = true;
-        await hit;
+        for (let index = 0; index < attackHitCount(move); index++) {
+            if (!target.isAlive() || !player.isAlive()) break;
+            const hit = target.damage(outgoingAttackDamage(move, player), player);
+            hit.mengsanAttack_shuying = true;
+            await hit;
+        }
     }
     if (target.isAlive() && player.isAlive()) applyFlyconidDebuff(target, move);
 };
@@ -316,7 +351,8 @@ const createScenario = (plan, current) => {
                 installMonsterPile(player, monster, current);
                 if (monster) {
                     current.energyUI.set(player, mountEnergy(player, current.session));
-                    current.intentUI.set(player, mountEnemyIntent(player, current.session, STYLE_PATH, document));
+                    current.intentUI.set(player, mountEnemyIntent(player,
+                        current.session, STYLE_PATH, document, () => game.me));
                 }
                 for (const participant of [...game.players, ...game.dead]) participant.setSeatNum(Number(participant.dataset.position) + 1);
                 await equipBattleUnit(player, spec, current.resources);
@@ -398,7 +434,9 @@ const prepareBattle = async (run, node, encounter, session, resources) => {
     const monsters = plan.units.map((spec, index) => initBattleUnit(participants[index], spec));
     plan.units.forEach((spec, index) => installMonsterPile(participants[index], monsters[index], currentBattle));
     participants.forEach((player, index) => {
-        if (monsters[index]) currentBattle.intentUI.set(player, mountEnemyIntent(player, session, STYLE_PATH, document));
+        if (monsters[index]) currentBattle.intentUI.set(player,
+            mountEnemyIntent(player, session, STYLE_PATH, document,
+                () => game.me));
     });
     activeBattle.director = createScenario(plan, currentBattle);
     activeBattle.director.bind("player", me);
@@ -418,7 +456,15 @@ const prepareBattle = async (run, node, encounter, session, resources) => {
     run.player.permanentSkills.forEach(skill => {
         if (lib.skill[skill] && !me.hasSkill(skill)) me.addSkill(skill);
     });
-    for (const skill of ["mengsan_draw_shuying", "mengsan_card_use_shuying", "mengsan_card_affixes_shuying", "mengsan_scenario_shuying", "mengsan_card_payment_shuying", "mengsan_monster_draw_shuying", "mengsan_flyconid_action_shuying"]) {
+    for (const skill of [
+        "mengsan_draw_shuying", "mengsan_card_use_shuying",
+        "mengsan_card_affixes_shuying", "mengsan_scenario_shuying",
+        "mengsan_card_payment_shuying", "mengsan_monster_draw_shuying",
+        "mengsan_flyconid_action_shuying",
+        "mengsan_death_blow_finish_shuying",
+        "mengsan_stun_skip_shuying", "mengsan_stun_recover_shuying",
+        "mengsan_stun_clear_shuying",
+    ]) {
         if (!lib.skill.global.includes(skill)) {
             game.addGlobalSkill(skill);
             session.ownResource({}, () => game.removeGlobalSkill(skill));
@@ -552,7 +598,10 @@ const routeRun = async (run, selected = null, supplied = false) => {
         const node = supplied ? selected : await showMap(run);
         supplied = false;
         if (!node) { await openModeSelection(); return; }
-        if (["event", "rest", "shop"].includes(node.type)) { await finishUtilityNode(run, node); continue; }
+        if (["event", "rest", "shop", "chest"].includes(node.type)) {
+            await finishUtilityNode(run, node);
+            continue;
+        }
         if (node.type === "story" && config.nodeContents?.[node.contentId]?.kind === "dialogue") {
             if (await finishStoryNode(run, node)) continue;
             return;
@@ -650,6 +699,42 @@ const createMode = identityMode => {
                 update(intent);
                 return true;
             },
+            mengsanStunEnemy_shuying(player, options = {}) {
+                const update = activeBattle?.intentUI.get(player);
+                if (!activeBattle?.session.active || !update ||
+                    !player?.isAlive() ||
+                    player.storage?.mengsanCamp_shuying !== "enemy") {
+                    return false;
+                }
+                if (isStunned(player)) return false;
+                const { resume = "advance", recover } = options;
+                const flyconid = isFlyconid(player);
+                const intent = options.intent ?? (flyconid ?
+                    player.storage.mengsanFlyconidIntent_shuying : null);
+                const restore = recover || (flyconid ?
+                    (choice, original) => {
+                        const state =
+                            player.storage.mengsanFlyconidState_shuying || {};
+                        player.storage.mengsanFlyconidState_shuying =
+                            recordFlyconidAction(state, null, false);
+                        const next = choice === "retry" ? original : null;
+                        player.storage.mengsanFlyconidIntent_shuying = next;
+                        return next;
+                    } : null);
+                const onRecover = async (choice, original) => {
+                    const next = await restore(choice, original);
+                    update(next === undefined ?
+                        (choice === "retry" ? original : null) : next);
+                };
+                if (typeof restore !== "function") {
+                    throw new TypeError("此怪物需要击晕恢复回调");
+                }
+                if (!applyStun(player, intent, { resume, recover: onRecover })) {
+                    return false;
+                }
+                update(STUN_INTENT);
+                return true;
+            },
             async mengsanPersistRun_shuying(run) {
                 await saveRun(run);
             },
@@ -720,14 +805,60 @@ const createMode = identityMode => {
                 trigger: { player: "phaseDrawBegin2" },
                 forced: true, silent: true, popup: false,
                 filter(event, player) { return Boolean(player.storage?.mengsanMonster_shuying); },
-                async content(event, trigger, player) { trigger.num = player.storage.mengsanMonster_shuying.draw; },
+                async content(event, trigger, player) {
+                    trigger.num = isStunned(player) ? 0 :
+                        player.storage.mengsanMonster_shuying.draw;
+                },
             },
             mengsan_flyconid_action_shuying: {
                 trigger: { global: "phaseUseBefore" },
                 forced: true, silent: true, popup: false, priority: 100,
-                filter(event) { return Boolean(activeBattle?.session.active && isFlyconid(event.player) && event.player.storage.mengsanFlyconidIntent_shuying); },
+                filter(event) { return Boolean(activeBattle?.session.active &&
+                    !isStunned(event.player) && isFlyconid(event.player) &&
+                    event.player.storage.mengsanFlyconidIntent_shuying); },
                 async content(event, trigger) { await executeFlyconidIntent(trigger.player); },
             },
+            mengsan_stun_skip_shuying: {
+                trigger: { global: "phaseUseBefore" },
+                forced: true, silent: true, popup: false, priority: 200,
+                filter(event) {
+                    return Boolean(activeBattle?.session.active &&
+                        isStunned(event.player));
+                },
+                async content(event, trigger) {
+                    skipStunnedAction(trigger.player, trigger);
+                },
+            },
+            mengsan_stun_recover_shuying: {
+                trigger: { global: "phaseAfter" },
+                forced: true, silent: true, popup: false, priority: 200,
+                filter(event) {
+                    return Boolean(activeBattle?.session.active &&
+                        isStunned(event.player));
+                },
+                async content(event, trigger) {
+                    await finishStunnedTurn(trigger.player);
+                },
+            },
+            mengsan_stun_clear_shuying: {
+                trigger: { global: "dieAfter" },
+                forced: true, silent: true, popup: false,
+                filter(event) { return isStunned(event.player); },
+                async content(event, trigger) {
+                    clearStun(trigger.player);
+                },
+            },
+            mengsan_death_blow_finish_shuying: {
+                trigger: { global: "phaseUseAfter" },
+                forced: true, silent: true, popup: false,
+                filter(event) {
+                    return Boolean(activeBattle?.session.active &&
+                        hasPendingDeathBlow(event.player));
+                },
+                async content(event, trigger) {
+                    await finishDeathBlow(trigger.player);
+                },
+            },
             mengsan_frail_shuying: {
                 mark: true, marktext: "脆",
                 onremove(player) { delete player.storage.mengsanFrail_shuying; },
diff --git a/mengsan/runtime/death-blow.js b/mengsan/runtime/death-blow.js
new file mode 100644
index 0000000..dc96331
--- /dev/null
+++ b/mengsan/runtime/death-blow.js
@@ -0,0 +1,38 @@
+import {
+    attackHitCount,
+    outgoingAttackDamage,
+} from "./intent-damage.js";
+
+const pendingDeathBlows = new WeakSet();
+
+export function isDeathBlowIntent(intent) {
+    return intent?.intentType === "death_blow";
+}
+
+export function hasPendingDeathBlow(source) {
+    return pendingDeathBlows.has(source);
+}
+
+export async function beginDeathBlow(source, target, intent) {
+    if (!isDeathBlowIntent(intent)) {
+        throw new TypeError("濒死一击需要 death_blow 意图类型");
+    }
+    if (attackHitCount(intent) !== 1) {
+        throw new RangeError("濒死一击只能造成一次伤害");
+    }
+    const damage = outgoingAttackDamage(intent, source);
+    if (!source?.isAlive() || !target?.isAlive()) return false;
+
+    const hit = target.damage(damage, source);
+    hit.mengsanAttack_shuying = true;
+    await hit;
+    if (source.isAlive()) pendingDeathBlows.add(source);
+    return true;
+}
+
+export async function finishDeathBlow(source) {
+    if (!hasPendingDeathBlow(source)) return false;
+    pendingDeathBlows.delete(source);
+    if (source.isAlive()) await source.die();
+    return true;
+}
diff --git a/mengsan/runtime/intent-damage.js b/mengsan/runtime/intent-damage.js
new file mode 100644
index 0000000..039cd6b
--- /dev/null
+++ b/mengsan/runtime/intent-damage.js
@@ -0,0 +1,28 @@
+export function attackHitCount(intent) {
+    const hits = intent.hits ?? 1;
+    if (!Number.isInteger(hits) || hits < 1) {
+        throw new RangeError("攻击段数必须是正整数");
+    }
+    return hits;
+}
+
+export function outgoingAttackDamage(intent, source) {
+    if (!Number.isInteger(intent.damage) || intent.damage < 0) {
+        throw new RangeError("预测伤害必须是非负整数");
+    }
+    const storedStrength = source?.storage?.mengsanStrength_shuying;
+    const strength = Number.isInteger(storedStrength) ? storedStrength : 0;
+    let damage = Math.max(0, intent.damage + strength);
+    if (source?.storage?.mengsanWeak_shuying > 0) {
+        damage = Math.floor(damage * 0.75);
+    }
+    return damage;
+}
+
+export function previewAttackDamage(intent, source, target) {
+    let damage = outgoingAttackDamage(intent, source);
+    if (target?.storage?.mengsanVulnerable_shuying > 0) {
+        damage = Math.ceil(damage * 1.5);
+    }
+    return damage;
+}
diff --git a/mengsan/runtime/intent-display.js b/mengsan/runtime/intent-display.js
index 403bd8f..9006752 100644
--- a/mengsan/runtime/intent-display.js
+++ b/mengsan/runtime/intent-display.js
@@ -1,6 +1,12 @@
 // 只呈现已经选定的预测技能；不从手牌或原生技能猜测意图。
+import { attackHitCount, previewAttackDamage } from "./intent-damage.js";
+import { isDeathBlowIntent } from "./death-blow.js";
+import { isStunIntent } from "./stun-intent.js";
+
 export function attackIconForDamage(damage) {
-    if (!Number.isInteger(damage) || damage < 0) throw new RangeError("预测伤害必须是非负整数");
+    if (!Number.isInteger(damage) || damage < 0) {
+        throw new RangeError("预测伤害必须是非负整数");
+    }
     if (damage < 5) return 1;
     if (damage < 10) return 2;
     if (damage < 20) return 3;
@@ -8,56 +14,111 @@ export function attackIconForDamage(damage) {
     return 5;
 }
 
-export function mountEnemyIntent(player, session, assetBase, document) {
+export function mountEnemyIntent(player, session, assetBase, document,
+    getTarget = () => null) {
     const badge = document.createElement("div");
     badge.className = "mengsan-intent-shuying";
     badge.hidden = true;
     badge.setAttribute("aria-live", "polite");
-    const name = document.createElement("span");
-    name.className = "mengsan-intent-name-shuying";
+    badge.setAttribute("aria-atomic", "true");
     const damageLine = document.createElement("span");
     damageLine.className = "mengsan-intent-damage-shuying";
     const amount = document.createElement("span");
     amount.className = "mengsan-intent-amount-shuying";
     const icon = document.createElement("img");
     icon.className = "mengsan-intent-icon-shuying";
-    icon.alt = "预计伤害";
+    icon.alt = "Attack";
     icon.decoding = "async";
-    damageLine.append(amount, icon);
+    damageLine.append(icon, amount);
     const debuffLine = document.createElement("span");
     debuffLine.className = "mengsan-intent-debuff-shuying";
     const debuffIcon = document.createElement("img");
     debuffIcon.className = "mengsan-intent-icon-shuying";
-    debuffIcon.alt = "预计施加负面状态";
+    debuffIcon.alt = "Debuff";
     debuffIcon.decoding = "async";
     debuffIcon.src = `${assetBase}/assets/intent/Intent_debuff.webp`;
     const debuffAmount = document.createElement("span");
     debuffLine.append(debuffIcon, debuffAmount);
-    badge.append(name, damageLine, debuffLine);
+    badge.append(damageLine, debuffLine);
     player.appendChild(badge);
-    session.ownResource(badge, () => badge.remove());
-    return intent => {
+    let currentIntent = null;
+    let timer;
+    session.ownResource(badge, () => {
+        clearInterval(timer);
+        badge.remove();
+    });
+    const refresh = () => {
+        const intent = currentIntent;
         if (!intent) {
             badge.hidden = true;
-            badge.removeAttribute("title");
             return;
         }
-        if (typeof intent.name !== "string" || !intent.name.trim()) throw new TypeError("预测技能必须有名称");
-        name.textContent = intent.name;
-        const hasDamage = intent.damage != null;
-        damageLine.hidden = !hasDamage;
-        const hasDebuff = typeof intent.debuff === "string" && Number.isInteger(intent.stacks) && intent.stacks > 0;
-        debuffLine.hidden = !hasDebuff;
-        if (hasDebuff) debuffAmount.textContent = `${intent.debuff}×${intent.stacks}`;
-        if (hasDamage) {
-            const tier = attackIconForDamage(intent.damage);
-            amount.textContent = String(intent.damage);
-            const src = `${assetBase}/assets/intent/Intent_attack_${tier}.webp`;
+        if (isStunIntent(intent)) {
+            damageLine.hidden = false;
+            debuffLine.hidden = true;
+            amount.textContent = "";
+            const src = `${assetBase}/assets/intent/Intent_stun.png`;
             if (icon.getAttribute("src") !== src) icon.src = src;
-            badge.title = `${intent.name}：预计造成 ${intent.damage} 点伤害（非最终伤害）${hasDebuff ? `，施加${intent.stacks}层${intent.debuff}` : ""}`;
+            icon.alt = "Stunned";
+            if (badge.getAttribute("aria-label") !== "Stunned") {
+                badge.setAttribute("aria-label", "Stunned");
+            }
+            badge.hidden = false;
+            return;
+        }
+        const hasDamage = intent.damage != null;
+        const deathBlow = isDeathBlowIntent(intent);
+        if (deathBlow && !hasDamage) {
+            throw new TypeError("濒死一击必须有伤害数值");
+        }
+        damageLine.hidden = !hasDamage;
+        const hasDebuff = typeof intent.debuff === "string" &&
+            Number.isInteger(intent.stacks) && intent.stacks > 0;
+        debuffLine.hidden = !hasDebuff;
+        if (hasDebuff) {
+            const label = intent.id === "frail" ? "Frail" :
+                intent.id === "vulnerable" ? "Vulnerable" : "Debuff";
+            const debuffText = `${label} ×${intent.stacks}`;
+            if (debuffAmount.textContent !== debuffText) {
+                debuffAmount.textContent = debuffText;
+            }
+        }
+        if (hasDamage) {
+            const hits = attackHitCount(intent);
+            if (deathBlow && hits !== 1) {
+                throw new RangeError("濒死一击只能造成一次伤害");
+            }
+            const damage = previewAttackDamage(intent, player, getTarget());
+            const tier = deathBlow ? null :
+                attackIconForDamage(damage * hits);
+            const damageText = hits > 1 ? `${damage}×${hits}` :
+                String(damage);
+            if (amount.textContent !== damageText) {
+                amount.textContent = damageText;
+            }
+            const src = deathBlow ?
+                `${assetBase}/assets/intent/Intent_death_blow.png` :
+                `${assetBase}/assets/intent/Intent_attack_${tier}.webp`;
+            if (icon.getAttribute("src") !== src) icon.src = src;
+            icon.alt = deathBlow ? "Death Blow" : "Attack";
+            const label = `${deathBlow ? "Death Blow" : "Attack"}: ` +
+                `${damage} damage${hits > 1 ?
+                ` × ${hits} hits` : ""}${hasDebuff ?
+                `, ${debuffAmount.textContent}` : ""}`;
+            if (badge.getAttribute("aria-label") !== label) {
+                badge.setAttribute("aria-label", label);
+            }
         } else {
-            badge.title = hasDebuff ? `${intent.name}：施加${intent.stacks}层${intent.debuff}` : intent.name;
+            const label = debuffAmount.textContent;
+            if (badge.getAttribute("aria-label") !== label) {
+                badge.setAttribute("aria-label", label);
+            }
         }
         badge.hidden = false;
     };
+    timer = setInterval(refresh, 100);
+    return intent => {
+        currentIntent = intent;
+        refresh();
+    };
 }
diff --git a/mengsan/runtime/stun-intent.js b/mengsan/runtime/stun-intent.js
new file mode 100644
index 0000000..9e11fbf
--- /dev/null
+++ b/mengsan/runtime/stun-intent.js
@@ -0,0 +1,45 @@
+const stunned = new WeakMap();
+
+export const STUN_INTENT = Object.freeze({ intentType: "stun" });
+
+export function isStunIntent(intent) {
+    return intent?.intentType === "stun";
+}
+
+export function isStunned(player) {
+    return stunned.has(player);
+}
+
+export function applyStun(player, intent, options = {}) {
+    if (stunned.has(player)) return false;
+    const { resume = "advance", recover } = options;
+    if (resume !== "advance" && resume !== "retry") {
+        throw new RangeError("击晕恢复方式无效");
+    }
+    if (typeof recover !== "function") {
+        throw new TypeError("击晕需要恢复回调");
+    }
+    if (!player?.isAlive()) return false;
+    stunned.set(player, { intent, resume, recover, skipped: false });
+    return true;
+}
+
+export function skipStunnedAction(player, phaseUse) {
+    const state = stunned.get(player);
+    if (!state || state.skipped) return false;
+    phaseUse.cancel();
+    state.skipped = true;
+    return true;
+}
+
+export async function finishStunnedTurn(player) {
+    const state = stunned.get(player);
+    if (!state?.skipped) return false;
+    stunned.delete(player);
+    if (player.isAlive()) await state.recover(state.resume, state.intent);
+    return true;
+}
+
+export function clearStun(player) {
+    return stunned.delete(player);
+}
diff --git a/mengsan/state.js b/mengsan/state.js
index 13199c1..aae143c 100644
--- a/mengsan/state.js
+++ b/mengsan/state.js
@@ -110,6 +110,9 @@ export const generateActMap = (run, actIndex) => {
             let type;
             if (floor == lastFloor) type = "boss";
             else if (fixedNode?.type) type = fixedNode.type;
+            else if (act.requiredFloors?.[floor + 1]) {
+                type = act.requiredFloors[floor + 1];
+            }
             else if (floor == 0) type = "battle";
             else type = weightedType(run, act.nodeWeights);
             const id = `${act.id}_f${floor}_n${index}_${Math.floor(nextRandom(run) * 1e6)}`;
diff --git a/mengsan/style.css b/mengsan/style.css
index df2fb27..03ec96d 100644
--- a/mengsan/style.css
+++ b/mengsan/style.css
@@ -188,7 +188,7 @@
     overflow-y: auto;
     overscroll-behavior: contain;
     -webkit-overflow-scrolling: touch;
-    touch-action: none;
+    touch-action: pan-y;
     cursor: grab;
     user-select: none;
     scrollbar-width: none;
@@ -198,7 +198,8 @@
     position: relative;
     display: block !important;
     width: min(100%, 860px);
-    height: max(1080px, 160vh) !important;
+    height: max(1080px, 160vh,
+        var(--mengsan-map-min-height, 1080px)) !important;
     margin: 0 auto;
     overflow: hidden;
     isolation: isolate;
@@ -520,7 +521,6 @@
 
 .mengsan-map-viewport-shuying::-webkit-scrollbar { display: none; width: 0; height: 0; }
 .mengsan-map-viewport-shuying.dragging, .mengsan-map-viewport-shuying.dragging * { cursor: grabbing !important; }
-.mengsan-map-shuying .mengsan-node-shuying { touch-action: none; }
 /* 梦三行军图视觉系统：深墨舞台、宣纸路线、朱砂交互、铜金层级 */
 .mengsan-map-overlay-shuying {
     --ms-ink-950: #111713;
@@ -1301,7 +1301,7 @@ dialog.mengsan-deck-dialog-shuying::backdrop { background: #080706b8; }
     text-align: center;
     pointer-events: none;
 }
-/* The selected skill appears below an enemy's frame; number precedes the weapon icon. */
+/* The selected intent appears below an enemy's frame. */
 .player > .mengsan-intent-shuying {
     position: absolute !important;
     bottom: -31px !important;
@@ -1327,10 +1327,6 @@ dialog.mengsan-deck-dialog-shuying::backdrop { background: #080706b8; }
 .player > .mengsan-intent-shuying[hidden],
 .mengsan-intent-damage-shuying[hidden],
 .mengsan-intent-debuff-shuying[hidden] { display: none !important; }
-.mengsan-intent-name-shuying {
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
 .mengsan-intent-damage-shuying {
     display: inline-flex;
     flex: none;
diff --git a/menu.js b/menu.js
index 2669a7a..d8fe896 100644
--- a/menu.js
+++ b/menu.js
@@ -339,6 +339,19 @@ export default function initShuYingMenu({ lib, game, ui, shuYing, updater }) {
         },
     };
 
+    menu.mengsanModule = {
+        name: "梦三模式（按需安装/卸载）",
+        clear: true,
+        onclick() {
+            if (shuYing.m_bIsDownload) {
+                shuYing.m_bIsDownload = false;
+                updater.manageMengsanModule(shuYing);
+            } else {
+                alert("有其他文件正在下载，请稍后再试吧。");
+            }
+        },
+    };
+
     menu.repairBug = {
         name: "本地资源修复",
         clear: true,
diff --git a/tools/UPDATE.md b/tools/UPDATE.md
new file mode 100644
index 0000000..a363c00
--- /dev/null
+++ b/tools/UPDATE.md
@@ -0,0 +1,39 @@
+# 更新清单与可选模块
+
+## 梦三模式
+
+梦三仍与主包保存在同一仓库，但作为独立下载模块发布。基础清单
+`dist/manifest.json` 不包含 `mengsan/` 文件；模块清单
+`dist/modules/mengsan.json` 单独记录梦三文件、大小和 SHA-256。
+
+用户通过扩展菜单的“梦三模式（按需安装/卸载）”下载或卸载。主包版本
+更新只检查主包文件，以及本地已安装模块的文件；“查漏补缺”会检查主包
+资源和已安装模块，不会自动下载未安装的梦三模式。
+
+## 发布流程
+
+1. 在 `tools/manifest_config.json` 的 `core` 中维护主包必须文件。
+2. 在 `modules` 中维护可选模块的目录、入口和显示名。
+3. 发布工作流为每个模块生成独立清单，并将清单提交到发布标签。
+4. 完整 ZIP 安装包仍包含所有模块，供离线或整包安装使用。
+
+客户端从标签的 raw 文件路径读取清单。因此 Gitea 发布必须使用已经包含
+`dist/manifest.json` 和 `dist/modules/*.json` 的同一标签；当前 Gitea 工作流
+会生成并上传附件，但不会改写触发它的标签。
+
+发布时生成器会把 `tools/legacy/mengsan-files.json`、上一次完整清单和当前模块
+文件合并，随新标签发布迁移路径清单。它用于接管旧安装中的梦三文件并清理
+不再属于新版本的文件。该文件由迁移时仓库内的梦三路径生成，作为冻结的旧版
+所有权记录，兼容旧更新器已经推进主包版本号、但尚未更新梦三模块的用户。
+
+## 旧文件与目录
+
+升级时比较旧版和新版的文件路径清单，删除旧清单有、新清单没有的模块文件；
+新增或损坏文件会按 SHA-256 下载和修复。模块卸载只删除模块清单声明的文件。
+
+不根据“目录不在新清单中”递归删除目录，避免误删用户自行放入目录的文件。
+确需删除整个旧目录时，先确认其不包含用户数据，再通过主包清单的
+`removeDirectories` 明确声明。
+
+新增模块时，清单生成器可通过配置建立独立清单；客户端的安装菜单、启动
+加载和卸载入口仍需为该模块添加对应管理逻辑。
diff --git a/tools/generate_manifest.py b/tools/generate_manifest.py
index 8bcc58c..26a4525 100644
--- a/tools/generate_manifest.py
+++ b/tools/generate_manifest.py
@@ -68,15 +68,36 @@ def load_config(root: Path, config_path: str) -> dict:
             "core": [],
             "remove": [],
             "removeDirectories": [],
+            "modules": {},
         }
 
     with path.open("r", encoding="utf-8") as file:
         config = json.load(file)
 
+    modules = {}
+    for name, item in config.get("modules", {}).items():
+        legacy_files = item.get("legacy_files", [])
+        legacy_source = item.get("legacy_files_from")
+        if legacy_source:
+            legacy_path = Path(legacy_source)
+            if not legacy_path.is_absolute():
+                legacy_path = root / legacy_path
+            with legacy_path.open("r", encoding="utf-8") as file:
+                legacy_files = json.load(file)
+        if not isinstance(legacy_files, list):
+            raise ValueError(f"legacy file list must be an array: {name}")
+        modules[name] = {
+            "root": normalize_path(item["root"]),
+            "entry": normalize_path(item["entry"]),
+            "title": item.get("title", name),
+            "legacy_files": [normalize_path(path) for path in legacy_files],
+        }
+
     return {
         "core": [normalize_path(item) for item in config.get("core", [])],
         "remove": [normalize_path(item) for item in config.get("remove", [])],
         "removeDirectories": [normalize_path(item) for item in config.get("removeDirectories", [])],
+        "modules": modules,
     }
 
 
@@ -117,67 +138,168 @@ def set_nested_file(tree: dict, relative_path: str, info: dict) -> None:
     }
 
 
-def build_manifest(root: Path, version: str, config: dict) -> dict:
-    flat_files = {}
-    tree = {
-        "type": "directory",
-        "name": root.name,
-        "children": {},
-    }
-    core_files = config["core"]
-    core_file_set = set(core_files)
-    remove_files = config["remove"]
-    remove_directories = config["removeDirectories"]
-    validate_config_files(root, core_files, "core")
-    validate_relative_paths(remove_files, "remove")
-    validate_relative_paths(remove_directories, "removeDirectories")
+def build_manifest(root: Path, version: str, config: dict,
+                   previous_manifest=None) -> tuple[dict, dict, dict]:
+    module_configs = config.get("modules", {})
+    module_roots = {name: item["root"] for name, item in module_configs.items()}
+    validate_relative_paths(list(module_roots.values()), "module roots")
+    if len(set(module_roots.values())) != len(module_roots):
+        raise ValueError("module roots must be unique")
+    for name, item in module_configs.items():
+        for other_name, other_root in module_roots.items():
+            if name != other_name and (
+                item["root"] == other_root
+                or item["root"].startswith(other_root + "/")
+                or other_root.startswith(item["root"] + "/")
+            ):
+                raise ValueError("module roots cannot overlap")
 
+    def owned_by_module(path: str) -> bool:
+        return any(path == module_root or path.startswith(module_root + "/")
+                   for module_root in module_roots.values())
+
+    config["remove"] = [file for file in config["remove"]
+                         if not owned_by_module(file)]
+    config["removeDirectories"] = [
+        directory for directory in config["removeDirectories"]
+        if not any(directory == module_root
+                   or directory.startswith(module_root + "/")
+                   or module_root.startswith(directory + "/")
+                   for module_root in module_roots.values())
+    ]
+
+    all_files = {}
     for path in scan_files(root):
         relative_path = str(path.relative_to(root)).replace("\\", "/")
-        info = {
+        all_files[relative_path] = {
             "size": path.stat().st_size,
             "sha256": sha256_file(path),
         }
 
-        flat_files[relative_path] = info
-        set_nested_file(tree["children"], relative_path, info)
+    def make_manifest(file_map: dict, core_files: list[str], removals: list[str],
+                      remove_directories: list[str], module_id: str = "") -> dict:
+        tree = {
+            "type": "directory",
+            "name": root.name,
+            "children": {},
+        }
+        for relative_path, info in file_map.items():
+            set_nested_file(tree["children"], relative_path, info)
 
-    remove_file_conflicts = [file for file in remove_files if file in flat_files]
-    if remove_file_conflicts:
-        raise ValueError(f"remove still contains current files: {', '.join(remove_file_conflicts)}")
+        core_file_set = set(core_files)
+        validate_config_files(root, core_files, "core")
+        missing_core = [file for file in core_files if file not in file_map]
+        if missing_core:
+            raise ValueError(
+                "core contains files outside this manifest: "
+                + ", ".join(missing_core)
+            )
+        validate_relative_paths(removals, "remove")
+        validate_relative_paths(remove_directories, "removeDirectories")
+        conflicts = [file for file in removals if file in file_map]
+        if conflicts:
+            raise ValueError(f"remove still contains current files: {', '.join(conflicts)}")
+        directory_conflicts = [
+            directory for directory in remove_directories
+            if any(file == directory or file.startswith(directory + "/")
+                   for file in file_map)
+        ]
+        if directory_conflicts:
+            raise ValueError(
+                "removeDirectories still contain current files: "
+                + ", ".join(directory_conflicts)
+            )
 
-    remove_directory_conflicts = [
-        directory for directory in remove_directories
-        if any(file == directory or file.startswith(f"{directory}/") for file in flat_files)
-    ]
-    if remove_directory_conflicts:
-        raise ValueError(
-            "removeDirectories still contain current files: "
-            + ", ".join(remove_directory_conflicts)
-        )
+        folder_digest = hashlib.sha256()
+        for relative_path in sorted(file_map):
+            info = file_map[relative_path]
+            folder_digest.update(relative_path.encode("utf-8"))
+            folder_digest.update(str(info["size"]).encode("ascii"))
+            folder_digest.update(info["sha256"].encode("ascii"))
 
-    folder_digest = hashlib.sha256()
-    for relative_path in sorted(flat_files):
-        info = flat_files[relative_path]
-        folder_digest.update(relative_path.encode("utf-8"))
-        folder_digest.update(str(info["size"]).encode("ascii"))
-        folder_digest.update(info["sha256"].encode("ascii"))
+        result = {
+            "version": version,
+            "generated_at": datetime.now(timezone.utc).isoformat(),
+            "algorithm": "sha256",
+            "update_channels": True,
+            "file_count": len(file_map),
+            "size_bytes": sum(info["size"] for info in file_map.values()),
+            "folder_sha256": folder_digest.hexdigest(),
+            "core": core_files,
+            "assets": [file for file in sorted(file_map) if file not in core_file_set],
+            "remove": removals,
+            "removeDirectories": remove_directories,
+            "files": file_map,
+            "tree": tree,
+        }
+        if module_id:
+            result["module_id"] = module_id
+        return result
 
-    return {
-        "version": version,
-        "generated_at": datetime.now(timezone.utc).isoformat(),
-        "algorithm": "sha256",
-        "update_channels": True,
-        "file_count": len(flat_files),
-        "folder_sha256": folder_digest.hexdigest(),
-        "core": core_files,
-        "assets": [file for file in sorted(flat_files) if file not in core_file_set],
-        "remove": remove_files,
-        "removeDirectories": remove_directories,
-        "files": flat_files,
-        "tree": tree,
+    module_files = {name: {} for name in module_configs}
+    base_files = {}
+    for path, info in all_files.items():
+        owner = next((name for name, module_root in module_roots.items()
+                      if path == module_root or path.startswith(module_root + "/")), None)
+        if owner:
+            module_files[owner][path] = info
+        else:
+            base_files[path] = info
+
+    base_manifest = make_manifest(
+        base_files, config["core"], config["remove"], config["removeDirectories"]
+    )
+    base_manifest["modules"] = {
+        name: {
+            "title": item["title"],
+            "entry": item["entry"],
+            "manifest": f"dist/modules/{name}.json",
+            "file_count": len(module_files[name]),
+            "size_bytes": sum(info["size"] for info in module_files[name].values()),
+        }
+        for name, item in module_configs.items()
     }
 
+    manifests = {}
+    legacy_manifests = {}
+    for name, item in module_configs.items():
+        files = module_files[name]
+        if item["entry"] not in files:
+            raise FileNotFoundError(f"module entry is missing: {item['entry']}")
+        manifests[name] = make_manifest(
+            files, [item["entry"]], [], [], module_id=name
+        )
+        manifests[name]["assets"] = [
+            file for file in sorted(files) if file != item["entry"]
+        ]
+        if not item["entry"].startswith(item["root"] + "/"):
+            raise ValueError(f"module entry is outside its root: {item['entry']}")
+        previous_files = previous_manifest.get("files", {}) \
+            if isinstance(previous_manifest, dict) else {}
+        legacy_files = set(item["legacy_files"])
+        legacy_files.update(module_files[name])
+        legacy_files.update(
+            file for file in previous_files
+            if isinstance(file, str) and file.startswith(item["root"] + "/")
+        )
+        legacy_files = sorted(legacy_files)
+        if legacy_files:
+            validate_relative_paths(list(legacy_files), "legacy module files")
+            if any(not file.startswith(item["root"] + "/")
+                   for file in legacy_files):
+                raise ValueError(f"legacy files escape module root: {name}")
+            legacy_manifests[name] = {
+                "version": version,
+                "module_id": name,
+                "snapshot": "legacy",
+                "files": legacy_files,
+            }
+            base_manifest["modules"][name]["legacy_manifest"] = (
+                f"dist/modules/{name}.legacy.json"
+            )
+
+    return base_manifest, manifests, legacy_manifests
+
 
 def main() -> None:
     parser = argparse.ArgumentParser(description="Generate shuying manifest.json")
@@ -194,10 +316,37 @@ def main() -> None:
         raise ValueError("Version cannot be empty")
 
     output = (root / args.out).resolve()
+    previous_manifest = None
+    if output.is_file():
+        with output.open("r", encoding="utf-8") as file:
+            previous_manifest = json.load(file)
     config = preserve_removals(load_config(root, args.config), output)
-    manifest = build_manifest(root, version, config)
+    manifest, modules, legacy_modules = build_manifest(
+        root, version, config, previous_manifest
+    )
     output.parent.mkdir(parents=True, exist_ok=True)
     output.write_text(json.dumps(manifest, ensure_ascii=False, indent=2), encoding="utf-8")
+    module_output = output.parent / "modules"
+    for name, module_manifest in modules.items():
+        module_path = module_output / f"{name}.json"
+        module_path.parent.mkdir(parents=True, exist_ok=True)
+        module_path.write_text(
+            json.dumps(module_manifest, ensure_ascii=False, indent=2),
+            encoding="utf-8",
+        )
+    for name, module_manifest in legacy_modules.items():
+        module_path = module_output / f"{name}.legacy.json"
+        module_path.parent.mkdir(parents=True, exist_ok=True)
+        module_path.write_text(
+            json.dumps(module_manifest, ensure_ascii=False, indent=2),
+            encoding="utf-8",
+        )
+    if module_output.is_dir():
+        expected = {f"{name}.json" for name in modules}
+        expected.update(f"{name}.legacy.json" for name in legacy_modules)
+        for stale in module_output.glob("*.json"):
+            if stale.name not in expected:
+                stale.unlink()
 
     print(f"version: {version}")
     print(f"file_count: {manifest['file_count']}")
@@ -207,6 +356,8 @@ def main() -> None:
     print(f"remove_directory_count: {len(manifest['removeDirectories'])}")
     print(f"folder_sha256: {manifest['folder_sha256']}")
     print(f"generated: {output}")
+    for name, module_manifest in modules.items():
+        print(f"module_{name}_file_count: {module_manifest['file_count']}")
 
 
 if __name__ == "__main__":
diff --git a/tools/legacy/mengsan-files.json b/tools/legacy/mengsan-files.json
new file mode 100644
index 0000000..1e06fa1
--- /dev/null
+++ b/tools/legacy/mengsan-files.json
@@ -0,0 +1,61 @@
+[
+  "mengsan/assets/flyconid-portrait.png",
+  "mengsan/assets/intent/Intent_attack_1.webp",
+  "mengsan/assets/intent/Intent_attack_2.webp",
+  "mengsan/assets/intent/Intent_attack_3.webp",
+  "mengsan/assets/intent/Intent_attack_4.webp",
+  "mengsan/assets/intent/Intent_attack_5.webp",
+  "mengsan/assets/intent/Intent_debuff.webp",
+  "mengsan/assets/sushuang-zhangshiping.png",
+  "mengsan/config.js",
+  "mengsan/content/acts/act1/index.js",
+  "mengsan/content/acts/act1/map.js",
+  "mengsan/content/acts/act1/rewards.js",
+  "mengsan/content/acts/act1/stories/forest-ambush.js",
+  "mengsan/content/acts/act1/stories/liubei-opening.js",
+  "mengsan/content/acts/act2/index.js",
+  "mengsan/content/acts/act2/map.js",
+  "mengsan/content/acts/act3/index.js",
+  "mengsan/content/acts/act3/map.js",
+  "mengsan/content/affixes.js",
+  "mengsan/content/card-definitions.js",
+  "mengsan/content/card-library.js",
+  "mengsan/content/mode-cards.js",
+  "mengsan/content/registry.js",
+  "mengsan/content/scenario-characters.js",
+  "mengsan/content/shared/index.js",
+  "mengsan/content/shared/rewards.js",
+  "mengsan/docs/battle-config.md",
+  "mengsan/docs/combat-rules.md",
+  "mengsan/docs/liubei-opening.md",
+  "mengsan/map/index.js",
+  "mengsan/map/renderer.js",
+  "mengsan/mode.js",
+  "mengsan/register.js",
+  "mengsan/runtime/battle-director.js",
+  "mengsan/runtime/battle-flow.js",
+  "mengsan/runtime/battle-loop.js",
+  "mengsan/runtime/battle-resources.js",
+  "mengsan/runtime/battle-session.js",
+  "mengsan/runtime/battle-settlement.js",
+  "mengsan/runtime/card-data.js",
+  "mengsan/runtime/card-library.js",
+  "mengsan/runtime/combat-rules.js",
+  "mengsan/runtime/dialogue-choice.js",
+  "mengsan/runtime/dialogue.js",
+  "mengsan/runtime/engine-session.js",
+  "mengsan/runtime/flow-ui.js",
+  "mengsan/runtime/flyconid-intent.js",
+  "mengsan/runtime/gm-manager.js",
+  "mengsan/runtime/intent-display.js",
+  "mengsan/runtime/mode-storage.js",
+  "mengsan/runtime/monster.js",
+  "mengsan/runtime/navigation.js",
+  "mengsan/runtime/personal-piles.js",
+  "mengsan/runtime/reward-ui.js",
+  "mengsan/runtime/reward.js",
+  "mengsan/runtime/skill-teardown.js",
+  "mengsan/runtime/story.js",
+  "mengsan/state.js",
+  "mengsan/style.css"
+]
\ No newline at end of file
diff --git a/tools/manifest_config.json b/tools/manifest_config.json
index fa39bb8..98a3b22 100644
--- a/tools/manifest_config.json
+++ b/tools/manifest_config.json
@@ -4,10 +4,6 @@
     "menu.js",
     "function.js",
     "update.js",
-    "mengsan/mode.js",
-    "mengsan/config.js",
-    "mengsan/state.js",
-    "mengsan/style.css",
     "tianshu/extension.js",
     "tianshu/config.js",
     "pve/boss/index.js",
@@ -79,5 +75,13 @@
     "pve/boss/sets/tianshu/voices.js"
   ],
   "remove": [],
-  "removeDirectories": []
+  "removeDirectories": [],
+  "modules": {
+    "mengsan": {
+      "root": "mengsan",
+      "entry": "mengsan/register.js",
+      "title": "梦三模式",
+      "legacy_files_from": "tools/legacy/mengsan-files.json"
+    }
+  }
 }
diff --git a/update.js b/update.js
index 818d703..f871df9 100644
--- a/update.js
+++ b/update.js
@@ -165,6 +165,12 @@ function escapeHTML(text) {
     }[char]));
 }
 
+function formatBytes(bytes) {
+    const value = Math.max(0, Number(bytes) || 0);
+    if (value < 1024 * 1024) return `${Math.ceil(value / 1024)} KB`;
+    return `${(value / 1024 / 1024).toFixed(1)} MB`;
+}
+
 function setProgress(shuYing, options = {}) {
     if (!shuYing?.text) return;
 
@@ -238,14 +244,26 @@ async function getManifestFromTag(tag, requireChannels = true,
     if (requireChannels && manifest?.update_channels !== true) {
         throw new Error("目标标签尚未包含新版更新器，请发布支持通道切换的版本");
     }
+    validateManifest(manifest, tag.version);
+
+    manifest.tag_name = tag.name;
+    manifest.source = source;
+    return manifest;
+}
+
+function validateManifest(manifest, version, moduleId = "") {
     if (!manifest || manifest.algorithm != "sha256"
         || !manifest.files || Array.isArray(manifest.files)
         || typeof manifest.files != "object"
-        || manifest.version != tag.version) {
+        || manifest.version != version
+        || (moduleId && manifest.module_id != moduleId)) {
         throw new Error("校验清单格式错误");
     }
 
     const files = getManifestFileKeys(manifest);
+    if (moduleId && files.some(file => !file.startsWith(`${moduleId}/`))) {
+        throw new Error(`校验清单包含越界的 ${moduleId} 模块文件`);
+    }
     if (!files.length || files.some(file => {
         const info = manifest.files[file];
         return !info || !Number.isSafeInteger(info.size) || info.size < 0
@@ -257,7 +275,27 @@ async function getManifestFromTag(tag, requireChannels = true,
     getManifestAssetFiles(manifest, coreFiles);
     getManifestRemoveFiles(manifest);
     getManifestRemoveDirectories(manifest);
+    return manifest;
+}
 
+async function getModuleManifest(tag, rootManifest, moduleId,
+    source = rootManifest?.source || getUpdateSource()) {
+    const descriptor = rootManifest?.modules?.[moduleId];
+    if (!descriptor || !isSafeManifestPath(descriptor.manifest)) {
+        throw new Error(`更新清单未提供 ${moduleId} 模块`);
+    }
+    if (typeof descriptor.entry != "string"
+        || !isSafeManifestPath(descriptor.entry)
+        || !descriptor.entry.startsWith(`${moduleId}/`)) {
+        throw new Error(`${moduleId} 模块入口配置无效`);
+    }
+    const response = await fetch(getRemoteUrl(tag.name, descriptor.manifest, source));
+    if (!response.ok) throw new Error(`${moduleId} 模块清单请求失败：${response.status}`);
+    const manifest = await response.json();
+    validateManifest(manifest, tag.version, moduleId);
+    if (!manifest.files[descriptor.entry]) {
+        throw new Error(`${moduleId} 模块清单缺少入口文件`);
+    }
     manifest.tag_name = tag.name;
     manifest.source = source;
     return manifest;
@@ -609,6 +647,89 @@ async function getChangedFiles(manifest) {
     return changed;
 }
 
+function makeLegacyModuleManifest(manifest, moduleId) {
+    const prefix = `${moduleId}/`;
+    const files = Object.fromEntries(Object.entries(manifest.files || {})
+        .filter(([file]) => file.startsWith(prefix)));
+    if (!Object.keys(files).length) return null;
+    const entry = `${moduleId}/register.js`;
+    return {
+        ...manifest,
+        module_id: moduleId,
+        files,
+        core: files[entry] ? [entry] : [],
+        assets: Object.keys(files).filter(file => file != entry),
+        remove: [],
+        removeDirectories: [],
+    };
+}
+
+async function getInstalledModuleManifest(moduleId, version, source) {
+    const tag = { name: `v${version}`, version };
+    const oldRoot = await getManifestFromTag(tag, false, source);
+    if (oldRoot.modules?.[moduleId]) {
+        return await getModuleManifest(tag, oldRoot, moduleId, source);
+    }
+    return makeLegacyModuleManifest(oldRoot, moduleId);
+}
+
+async function getLegacyModuleManifest(moduleId, rootManifest) {
+    const path = rootManifest?.modules?.[moduleId]?.legacy_manifest;
+    if (!path) return null;
+    if (!isSafeManifestPath(path)) {
+        throw new Error(`${moduleId} 迁移清单路径无效`);
+    }
+    const response = await fetch(getRemoteUrl(
+        rootManifest.tag_name, path, rootManifest.source
+    ));
+    if (!response.ok) throw new Error(`${moduleId} 迁移清单请求失败：${response.status}`);
+    const snapshot = await response.json();
+    if (snapshot.version != rootManifest.version
+        || snapshot.module_id != moduleId
+        || snapshot.snapshot != "legacy"
+        || !Array.isArray(snapshot.files)) {
+        throw new Error(`${moduleId} 迁移清单格式错误`);
+    }
+    const files = uniqueManifestList(snapshot.files);
+    if (files.some(file => !file.startsWith(`${moduleId}/`))) {
+        throw new Error(`${moduleId} 迁移清单包含越界文件`);
+    }
+    return { files: Object.fromEntries(files.map(file => [file, {}])) };
+}
+
+async function isMengsanInstalled(localVersion, previousManifest,
+    currentManifest) {
+    const saved = lib.config.shuYing_mengsan_installed_version;
+    if (saved == "disabled") return false;
+    if (saved) return true;
+    const entryPath = "extension/术樱包/mengsan/register.js";
+    if (typeof game.checkFile == "function"
+        && await safeCheckFile(entryPath) == 1) {
+        return true;
+    }
+    if (typeof game.checkFile != "function" && typeof game.readFile == "function") {
+        try {
+            await readFile(entryPath);
+            return true;
+        }
+        catch (error) { }
+    }
+    const oldManifest = previousManifest || (parseVersion(localVersion)
+        ? await getManifestFromTag({
+            name: `v${localVersion}`, version: localVersion,
+        }, false, currentManifest.source).catch(() => null)
+        : null);
+    return !!oldManifest?.files?.["mengsan/register.js"];
+}
+
+function mergeRemovedFiles(manifest, oldFiles, retainedFiles = []) {
+    const current = new Set(getManifestFileKeys(manifest));
+    const retained = new Set(retainedFiles);
+    manifest.remove = [...new Set([...(manifest.remove || []),
+        ...oldFiles.filter(file => !current.has(file) && !retained.has(file))])];
+    getManifestRemoveFiles(manifest);
+}
+
 async function getObsoleteFiles(manifest) {
     const existing = [];
     for (const file of getManifestRemoveFiles(manifest)) {
@@ -635,13 +756,15 @@ async function updateAllFiles(shuYing, manifest, files) {
     const oldRoot = `${coreTempDir}/old`;
     const backedUp = new Set();
     const installed = [];
+    const obsoleteBackups = [];
+    const obsoleteFiles = getManifestRemoveFiles(manifest);
     let filesInstalled = false;
     try {
         ensureProgressNode(shuYing);
         await createDir(`${newRoot}/`);
         await createDir(`${oldRoot}/`);
         await createFolders(`${newRoot}/`, files);
-        await createFolders(`${oldRoot}/`, files);
+        await createFolders(`${oldRoot}/`, [...files, ...obsoleteFiles]);
 
         for (let i = 0; i < files.length; i++) {
             const file = files[i];
@@ -672,11 +795,25 @@ async function updateAllFiles(shuYing, manifest, files) {
             installed.push(file);
             await writeTargetFile(await readFile(`${newRoot}/${file}`), target);
         }
-        filesInstalled = true;
+        for (const file of obsoleteFiles) {
+            const target = `extension/术樱包/${file}`;
+            try {
+                const original = await readFile(target);
+                await writeTargetFile(original, `${oldRoot}/${file}`);
+                backedUp.add(file);
+                obsoleteBackups.push(file);
+            }
+            catch (error) {
+                if (await safeCheckFile(target) == 1) throw error;
+            }
+        }
         await removeManifestOldPaths(shuYing, manifest);
+        filesInstalled = true;
     }
     catch (error) {
-        for (const file of filesInstalled ? [] : installed.reverse()) {
+        const rollbackFiles = filesInstalled ? []
+            : [...installed, ...obsoleteBackups].reverse();
+        for (const file of rollbackFiles) {
             const target = `extension/术樱包/${file}`;
             try {
                 if (backedUp.has(file)) {
@@ -693,7 +830,7 @@ async function updateAllFiles(shuYing, manifest, files) {
         throw error;
     }
     finally {
-        for (const file of files) {
+        for (const file of new Set([...files, ...backedUp])) {
             await removeFile(`${newRoot}/${file}`);
             if (backedUp.has(file)) await removeFile(`${oldRoot}/${file}`);
         }
@@ -758,41 +895,124 @@ async function checkVersion(shuYing, options = {}) {
             && compareVersions(onlineVersion.online_version, localVersion) < 0) {
             throw new Error("目标更新源的版本落后于本地版本，请稍后重试");
         }
-        if (options.switchChannel && parseVersion(localVersion)
-            && localVersion != manifest.version) {
-            const previous = await getManifestFromTag({
-                name: `v${localVersion}`,
-                version: localVersion,
-            }, false, manifest.source);
-            const targetFiles = new Set(getManifestFileKeys(manifest));
-            const removed = getManifestFileKeys(previous)
-                .filter(file => !targetFiles.has(file));
-            manifest.remove = [...new Set([...(manifest.remove || []), ...removed])];
-            getManifestRemoveFiles(manifest);
+        let previousManifest = null;
+        if (parseVersion(localVersion) && localVersion != manifest.version) {
+            previousManifest = await getManifestFromTag({
+                name: `v${localVersion}`, version: localVersion,
+            }, false, manifest.source).catch(error => {
+                console.warn("读取本地旧版清单失败，跳过旧文件差集清理：", error);
+                return null;
+            });
         }
+
+        const installedMengsan = await isMengsanInstalled(
+            localVersion, previousManifest, manifest
+        );
+        if (installedMengsan
+            && !lib.config.shuYing_mengsan_installed_version
+            && parseVersion(localVersion)) {
+            game.saveConfig("shuYing_mengsan_installed_version",
+                localVersion == manifest.version ? "legacy" : localVersion);
+        }
+        if (previousManifest) {
+            const retainedModuleFiles = manifest.modules?.mengsan
+                ? getManifestFileKeys(previousManifest)
+                    .filter(file => file.startsWith("mengsan/"))
+                : [];
+            mergeRemovedFiles(
+                manifest,
+                getManifestFileKeys(previousManifest),
+                retainedModuleFiles
+            );
+        }
+
         const changed = await getChangedFiles(manifest);
         const obsolete = await getObsoleteFiles(manifest);
-        await addLog(shuYing, `更新源：${manifest.source}；标签：${manifest.tag_name}；待更新文件：${changed.length}；待删除文件：${obsolete.length}`);
+        let mengsanManifest = null;
+        let mengsanChanged = [];
+        let mengsanObsolete = [];
+        let mengsanUpdateError = null;
+        let previousMengsan = null;
+        if (installedMengsan && manifest.modules?.mengsan) {
+            try {
+                mengsanManifest = await getModuleManifest({
+                    name: manifest.tag_name, version: manifest.version,
+                }, manifest, "mengsan");
+                const installedModuleVersion =
+                    lib.config.shuYing_mengsan_installed_version;
+                if (installedModuleVersion
+                    && installedModuleVersion != "disabled"
+                    && parseVersion(installedModuleVersion)
+                    && installedModuleVersion != manifest.version) {
+                    previousMengsan = await getInstalledModuleManifest(
+                        "mengsan", installedModuleVersion, manifest.source
+                    );
+                }
+                else if (previousManifest && previousManifest.modules?.mengsan) {
+                    previousMengsan = await getModuleManifest({
+                        name: `v${localVersion}`, version: localVersion,
+                    }, previousManifest, "mengsan", manifest.source);
+                }
+                else if (previousManifest) {
+                    previousMengsan = makeLegacyModuleManifest(
+                        previousManifest, "mengsan"
+                    );
+                }
+                if (!previousMengsan
+                    && (!installedModuleVersion || installedModuleVersion == "legacy")) {
+                    previousMengsan = await getLegacyModuleManifest(
+                        "mengsan", manifest
+                    );
+                }
+                if (previousMengsan) {
+                    mergeRemovedFiles(
+                        mengsanManifest,
+                        getManifestFileKeys(previousMengsan)
+                    );
+                }
+                mengsanChanged = await getChangedFiles(mengsanManifest);
+                mengsanObsolete = await getObsoleteFiles(mengsanManifest);
+            }
+            catch (error) {
+                mengsanUpdateError = error;
+                await addLog(shuYing, `梦三模块更新暂不可用：${getErrorMessage(error)}`);
+            }
+        }
+        const allChangedCount = changed.length + mengsanChanged.length;
+        const allObsoleteCount = obsolete.length + mengsanObsolete.length;
+        await addLog(shuYing, `更新源：${manifest.source}；标签：${manifest.tag_name}；待更新文件：${allChangedCount}；待删除文件：${allObsoleteCount}`);
 
         if (localVersion == onlineVersion.online_version
-            && !changed.length && !obsolete.length) {
+            && !allChangedCount && !allObsoleteCount && !mengsanUpdateError) {
             game.saveConfig("shuYing_online_version", onlineVersion.online_version);
             alert("本地版本为最新版");
             return onlineVersion.online_version;
         }
 
         const message = localVersion == onlineVersion.online_version
-            ? `当前版本有 ${changed.length} 个文件需修复、${obsolete.length} 个旧文件需删除，是否继续？`
+            ? `当前版本有 ${allChangedCount} 个文件需修复、${allObsoleteCount} 个旧文件需删除，是否继续？`
             : `检测到最新版本为:${onlineVersion.online_version}, 本地版本为:${localVersion}，是否更新？`;
         if (!options.switchChannel && !confirm(message)) {
             return null;
         }
 
         await updateAllFiles(shuYing, manifest, changed);
+        if (mengsanManifest && !mengsanUpdateError) {
+            try {
+                await updateAllFiles(shuYing, mengsanManifest, mengsanChanged);
+                game.saveConfig("shuYing_mengsan_installed_version", manifest.version);
+            }
+            catch (error) {
+                mengsanUpdateError = error;
+                await addLog(shuYing, `梦三模块更新失败：${getErrorMessage(error)}`);
+            }
+        }
         game.saveConfig("shuYing_local_version", onlineVersion.online_version);
         game.saveConfig("shuYing_online_version", onlineVersion.online_version);
         await addLog(shuYing, "版本更新完成");
-        alert("下载完成，重启生效");
+        alert(mengsanUpdateError
+            ? "主包更新完成；梦三模块未完成更新，可稍后重试。"
+            : "下载完成，重启生效");
         return onlineVersion.online_version;
     }
     catch (error) {
@@ -821,6 +1041,69 @@ async function repairMissingFiles(shuYing) {
         setProgress(shuYing, { title: "查漏补缺", status: "获取校验清单", current: 0, total: 1 });
         const manifest = await getManifest();
         const files = getManifestDownloadFiles(manifest);
+        const localVersion = lib.config.shuYing_local_version || "0.0.0.0";
+        let previousManifest = null;
+        if (parseVersion(localVersion) && localVersion != manifest.version) {
+            previousManifest = await getManifestFromTag({
+                name: `v${localVersion}`, version: localVersion,
+            }, false, manifest.source).catch(() => null);
+            if (previousManifest) {
+                const retainedModuleFiles = manifest.modules?.mengsan
+                    ? getManifestFileKeys(previousManifest)
+                        .filter(file => file.startsWith("mengsan/"))
+                    : [];
+                mergeRemovedFiles(
+                    manifest,
+                    getManifestFileKeys(previousManifest),
+                    retainedModuleFiles
+                );
+            }
+        }
+        const installedMengsan = await isMengsanInstalled(
+            localVersion, previousManifest, manifest
+        );
+        let mengsanManifest = null;
+        let previousMengsan = null;
+        if (installedMengsan && manifest.modules?.mengsan) {
+            mengsanManifest = await getModuleManifest({
+                name: manifest.tag_name, version: manifest.version,
+            }, manifest, "mengsan");
+            const installedModuleVersion =
+                lib.config.shuYing_mengsan_installed_version;
+            if (installedModuleVersion == "legacy") {
+                previousMengsan = await getLegacyModuleManifest(
+                    "mengsan", manifest
+                );
+            }
+            else if (installedModuleVersion
+                && parseVersion(installedModuleVersion)
+                && installedModuleVersion != manifest.version) {
+                previousMengsan = await getInstalledModuleManifest(
+                    "mengsan", installedModuleVersion, manifest.source
+                );
+            }
+            else if (previousManifest?.modules?.mengsan) {
+                previousMengsan = await getModuleManifest({
+                    name: `v${localVersion}`, version: localVersion,
+                }, previousManifest, "mengsan", manifest.source);
+            }
+            else if (previousManifest) {
+                previousMengsan = makeLegacyModuleManifest(
+                    previousManifest, "mengsan"
+                );
+            }
+            else if (!installedModuleVersion) {
+                previousMengsan = await getLegacyModuleManifest(
+                    "mengsan", manifest
+                );
+            }
+            if (previousMengsan) {
+                mergeRemovedFiles(
+                    mengsanManifest,
+                    getManifestFileKeys(previousMengsan)
+                );
+            }
+        }
         await addLog(shuYing, `待检查文件数：${files.length}`);
         await addLog(shuYing, `校验清单版本：${manifest.version || "未知"}；清单文件数：${Object.keys(manifest.files || {}).length}`);
 
@@ -830,6 +1113,11 @@ async function repairMissingFiles(shuYing) {
 
         await downloadList(shuYing, files, manifest);
         await removeManifestOldPaths(shuYing, manifest);
+        if (mengsanManifest) {
+            const moduleChanged = await getChangedFiles(mengsanManifest);
+            await updateAllFiles(shuYing, mengsanManifest, moduleChanged);
+            game.saveConfig("shuYing_mengsan_installed_version", manifest.version);
+        }
 
         setProgress(shuYing, { title: "查漏补缺", status: "完成", current: files.length, total: files.length });
         await addLog(shuYing, "查漏补缺完成");
@@ -846,6 +1134,104 @@ async function repairMissingFiles(shuYing) {
     }
 }
 
+async function manageMengsanModule(shuYing) {
+    setBusy(shuYing, true);
+    try {
+        shuYing._updateLogs = [];
+        const localVersion = lib.config.shuYing_local_version || "0.0.0.0";
+        const rootManifest = await getManifest();
+        const installed = await isMengsanInstalled(
+            localVersion, null, rootManifest
+        );
+        if (installed) {
+            if (!confirm("确认卸载梦三模式？只删除梦三模块清单拥有的文件。")) return;
+            let moduleManifest;
+            const moduleVersion = lib.config.shuYing_mengsan_installed_version;
+            if (moduleVersion == "legacy" || !moduleVersion) {
+                const legacyManifest = await getLegacyModuleManifest(
+                    "mengsan", rootManifest
+                ).catch(() => null);
+                const currentManifest = await getModuleManifest({
+                    name: rootManifest.tag_name, version: rootManifest.version,
+                }, rootManifest, "mengsan");
+                let localManifest = null;
+                if (parseVersion(localVersion)
+                    && localVersion != rootManifest.version) {
+                    localManifest = await getInstalledModuleManifest(
+                        "mengsan", localVersion, rootManifest.source
+                    ).catch(() => null);
+                }
+                moduleManifest = {
+                    files: Object.fromEntries([...new Set([
+                        ...getManifestFileKeys(legacyManifest || { files: {} }),
+                        ...getManifestFileKeys(localManifest || { files: {} }),
+                        ...getManifestFileKeys(currentManifest),
+                    ])].map(file => [file, {}])),
+                };
+            }
+            else if (parseVersion(moduleVersion || "")) {
+                moduleManifest = await getInstalledModuleManifest(
+                    "mengsan", moduleVersion, rootManifest.source
+                ).catch(async error => {
+                    await addLog(shuYing, `读取已安装模块清单失败：${getErrorMessage(error)}`);
+                    return null;
+                });
+            }
+            if (!moduleManifest && parseVersion(localVersion)) {
+                moduleManifest = await getInstalledModuleManifest(
+                    "mengsan", localVersion, rootManifest.source
+                ).catch(() => null);
+            }
+            if (!moduleManifest) {
+                moduleManifest = await getModuleManifest({
+                    name: rootManifest.tag_name, version: rootManifest.version,
+                }, rootManifest, "mengsan");
+            }
+            const files = getManifestFileKeys(moduleManifest);
+            if (typeof game.removeFile != "function") {
+                throw new Error("当前环境不支持安全卸载文件");
+            }
+            for (const file of files) {
+                await addLog(shuYing, `卸载梦三文件：${file}`);
+                await removeFile(`extension/术樱包/${file}`);
+                if (typeof game.checkFile == "function"
+                    && await safeCheckFile(`extension/术樱包/${file}`) == 1) {
+                    throw new Error(`梦三文件删除失败：${file}`);
+                }
+            }
+            game.saveConfig("shuYing_mengsan_installed_version", "disabled");
+            alert("梦三模式文件已卸载，请重启游戏生效。");
+            return;
+        }
+
+        const moduleInfo = rootManifest.modules?.mengsan;
+        const sizeText = moduleInfo?.size_bytes
+            ? `，约 ${formatBytes(moduleInfo.size_bytes)}` : "";
+        if (!confirm(`梦三模式尚未安装，是否下载并校验全部梦三资源${sizeText}？`)) return;
+        const moduleManifest = await getModuleManifest({
+            name: rootManifest.tag_name, version: rootManifest.version,
+        }, rootManifest, "mengsan");
+        const files = getManifestFileKeys(moduleManifest);
+        ensureProgressNode(shuYing);
+        setProgress(shuYing, {
+            title: "安装梦三模式", status: "准备下载", current: 0,
+            total: files.length * 2,
+        });
+        await updateAllFiles(shuYing, moduleManifest, files);
+        game.saveConfig("shuYing_mengsan_installed_version", rootManifest.version);
+        alert("梦三模式下载完成，请重启游戏生效。");
+    }
+    catch (error) {
+        console.error(error);
+        await addLog(shuYing, `梦三模块操作失败：${getErrorMessage(error)}`);
+        alert("梦三模式操作失败，请检查网络或 extension/术樱包/log.txt。");
+    }
+    finally {
+        removeProgressNode(shuYing);
+        setBusy(shuYing, false);
+    }
+}
+
 async function repairCoreFiles(shuYing) {
     let shouldDownload = false;
     let manifest;
@@ -904,4 +1290,5 @@ export default {
     checkVersion,
     repairMissingFiles,
     repairCoreFiles,
+    manageMengsanModule,
 };