diff --git a/README.md b/README.md
index fa14526..1c18210 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,10 @@
       **关键语义**：`unloaded`（没收到）与 `air`（真是空气）**必须可区分**
       mod 方块计入 `unknown_state_ids`，世界摘要带告警
 
+- [x] **P7** 实例层（`mcfold/instance.py`，8 项回归全绿）
+      **传入文件夹路径 → 拉起实例 → 读 mod 注册方块表 → 连服**
+      含：加载器版本归一化、裸名展开、歧义处理、越界 state id 归因到 mod
+
 ## 累计测试
 
 | 套件 | 项数 |
@@ -69,5 +73,9 @@
 | 区块解析 | 11 |
 | mod jar | 8 |
 | 世界模型 | 7 |
+| mod jar | 8 |
+| 实例层 | 8 |
 | 跨实现互操作 | 2 |
-| **合计** | **40** |
+| **合计** | **48** |
+
+统一入口：`./run_tests.sh`
diff --git a/mcfold/__pycache__/client.cpython-312.pyc b/mcfold/__pycache__/client.cpython-312.pyc
index e93faf9..210c4b1 100644
Binary files a/mcfold/__pycache__/client.cpython-312.pyc and b/mcfold/__pycache__/client.cpython-312.pyc differ
diff --git a/mcfold/__pycache__/instance.cpython-312.pyc b/mcfold/__pycache__/instance.cpython-312.pyc
new file mode 100644
index 0000000..b7dc482
Binary files /dev/null and b/mcfold/__pycache__/instance.cpython-312.pyc differ
diff --git a/mcfold/__pycache__/modjar.cpython-312.pyc b/mcfold/__pycache__/modjar.cpython-312.pyc
index 4a6cf56..f8ee30d 100644
Binary files a/mcfold/__pycache__/modjar.cpython-312.pyc and b/mcfold/__pycache__/modjar.cpython-312.pyc differ
diff --git a/mcfold/client.py b/mcfold/client.py
index 2fc195e..5ba78a2 100644
--- a/mcfold/client.py
+++ b/mcfold/client.py
@@ -37,6 +37,7 @@ class Client:
         self.proto: dict = {}
         self.proto_num: int = 0
         self.compression: int = -1
+        # 允许直接指定协议数据文件（优先），否则按 data_root 找
         self._path = Path(protocol_path) if protocol_path else None
 
     # ---------- 协议数据 ----------
@@ -67,6 +68,12 @@ class Client:
 
     def _data_root(self) -> Path:
         if self._path:
+            # 传进来的可能是 data 根，也可能是 data/pc —— 都容忍
+            for c in (self._path, self._path / "pc", self._path.parent):
+                if (c / "pc").is_dir():
+                    return c
+                if c.name == "pc" and c.is_dir():
+                    return c.parent
             return self._path
         cands = [
             Path("/home/newqqagent/plugin_data/mc/runtime/node_modules/"
diff --git a/mcfold/instance.py b/mcfold/instance.py
new file mode 100644
index 0000000..38c4cf2
--- /dev/null
+++ b/mcfold/instance.py
@@ -0,0 +1,291 @@
+"""实例层：传入文件夹路径 → 拉起一个完整实例。
+
+这是用户口径的落点（2026-09-25）：
+    "支持传入文件夹路径，按照版本文件夹内容，拉起实例，
+      并读取 mod jar 注册方块表。然后链接服务端，获取到数据。"
+
+实例文件夹 == 一个完整的 MC 客户端安装（与官方启动器一致）：
+
+    instances/<name>/                ← 传进来的就是它（== .minecraft）
+      versions/<verId>/<verId>.json  ← 决定协议版本（含加载器继承）
+      versions/<verId>/<verId>.jar   ← 客户端本体（渲染器）
+      mods/*.jar                     ← mod（决定方块名清单）
+      config/ options.txt saves/     ← 实例私有
+
+本模块把这些组合起来，并对**每一项能力标注可信度**：
+  * 协议版本  → 可信（来自 version.json + inheritsFrom）
+  * 方块名    → 原版可信；mod 方块名只有名字、没有 state id（附录 D）
+  * 世界数据  → 连接后才有；未加载区域显式可辨
+"""
+
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass, field
+from pathlib import Path
+from typing import Any
+
+from .chunk import BlockRegistry, MIN_Y, WORLD_HEIGHT, NUM_SECTIONS
+from .client import Client
+from .modjar import ModInfo, scan_mods, summarize
+from .version import VersionInfo, list_versions, resolve_version
+from .world import World
+
+# 默认的内容根（libraries/assets 可共享，可只读）
+DEFAULT_CONTENT_ROOTS = (
+    "/home/newqqagent/mcview/store",
+    "/home/newqqagent/plugindev/mcfold/store",
+)
+
+# 内置的方块数据（minecraft-data 的 blocks.json，按 majorVersion 组织）
+DEFAULT_DATA_ROOT = (
+    "/home/newqqagent/plugin_data/mc/runtime/node_modules/"
+    "minecraft-data/minecraft-data/data/pc"
+)
+
+
+@dataclass
+class InstanceStatus:
+    """给 agent 看的实例现状（含每一项的可信度）。"""
+    path: str
+    version_id: str = ""
+    mc_version: str = ""
+    loader: str = ""
+    protocol: int = 0
+    mods_loaded: int = 0
+    mods_failed: int = 0
+    mod_blocks: int = 0
+    connected: bool = False
+    loaded_chunks: int = 0
+    unknown_states: int = 0
+    notes: list[str] = field(default_factory=list)
+
+    def to_dict(self) -> dict[str, Any]:
+        return {
+            "path": self.path,
+            "version": {
+                "id": self.version_id, "mc": self.mc_version,
+                "loader": self.loader, "protocol": self.protocol,
+                "trusted": "来自 version.json（含 inheritsFrom 归一化）",
+            },
+            "mods": {
+                "loaded": self.mods_loaded, "failed": self.mods_failed,
+                "block_names": self.mod_blocks,
+                "state_ids": None,
+                "note": "只有方块名，无 state id（附录 D）",
+            },
+            "world": {
+                "connected": self.connected,
+                "loaded_chunks": self.loaded_chunks,
+                "unknown_states": self.unknown_states,
+            },
+            "notes": self.notes,
+        }
+
+
+class Instance:
+    """一个 MC 实例。"""
+
+    def __init__(
+        self,
+        path: str | os.PathLike[str],
+        prefer_version: str | None = None,
+        content_root: str | os.PathLike[str] | None = None,
+        data_root: str | os.PathLike[str] | None = None,
+    ):
+        self.path = Path(path)
+        self.prefer_version = prefer_version
+        self.content_root = Path(content_root) if content_root else self._find_content_root()
+        self.data_root = Path(data_root) if data_root else Path(DEFAULT_DATA_ROOT)
+
+        self.version: VersionInfo | None = None
+        self.mods: list[ModInfo] = []
+        self.registry: BlockRegistry | None = None
+        self.world = World()
+        self.client: Client | None = None
+        self.notes: list[str] = []
+
+    # ---------- 内容根 ----------
+    def _find_content_root(self) -> Path | None:
+        """找可共享的内容根（含 libraries/ 的那个）。
+
+        实例文件夹自己带 libraries/ 时优先用它（自包含安装）。
+        """
+        if (self.path / "libraries").is_dir():
+            return self.path
+        for c in DEFAULT_CONTENT_ROOTS:
+            cp = Path(c)
+            if cp.is_dir():
+                # 内容根下按 loader-version 组织
+                for sub in cp.iterdir():
+                    if sub.is_dir() and (sub / "libraries").is_dir():
+                        return sub
+        return None
+
+    # ---------- 装载 ----------
+    def load(self) -> "Instance":
+        """读实例文件夹：版本 + mod + 方块注册表。"""
+        self.version = resolve_version(self.path, self.prefer_version)
+        if self.version is None:
+            raise FileNotFoundError(
+                f"{self.path} 下没有可用版本（需要 versions/<id>/<id>.json）")
+
+        mods_dir = self.path / "mods"
+        self.mods = scan_mods(mods_dir)
+
+        self._load_registry()
+        self._build_world()
+
+        if self.mods:
+            bad = [m for m in self.mods if not m.ok]
+            self.notes.append(
+                f"本实例含 {len(self.mods)} 个 mod"
+                + (f"（{len(bad)} 个解析失败）" if bad else "")
+                + "；mod 方块仅有名字、无 state id，"
+                  "世界查询遇到未注册 state id 会显示 unknown(id)。"
+            )
+        return self
+
+    def _load_registry(self) -> None:
+        """载入方块注册表。
+
+        注意 minecraft-data 的组织方式：1.20.1 目录里只有 version.json
+        （majorVersion=1.20），真正的数据在 1.20/ 下 —— 所以要按 majorVersion 找。
+        """
+        if self.version is None:
+            return
+        mc = self.version.mc_version
+        cands = [self.data_root / mc / "blocks.json"]
+        # 按 majorVersion 回退（1.20.1 -> 1.20）
+        parts = mc.split(".")
+        for take in range(len(parts) - 1, 0, -1):
+            cands.append(self.data_root / ".".join(parts[:take]) / "blocks.json")
+        for c in cands:
+            if c.is_file():
+                self.registry = BlockRegistry.from_json_file(str(c))
+                return
+        self.notes.append(f"未找到 {mc} 的方块数据 ⇒ 世界查询将只返回 state id")
+
+    def _build_world(self) -> None:
+        self.world = World(self.registry)
+        if self.version is not None:
+            base = self.version.raw or {}
+            # 1.18+ 的世界范围可由 version.json 提供；缺省用 1.20 的实测值
+            self.world.min_y = base.get("minY", MIN_Y)
+            # worldHeight 常见写法：height 或 直接用默认 384
+            self.world.num_sections = base.get("worldHeight", WORLD_HEIGHT) >> 4
+
+    # ---------- 连接 ----------
+    def connect(self, host: str, port: int, username: str) -> Client:
+        """连服务端（协议版本由实例文件夹决定，不硬编码）。"""
+        if self.version is None:
+            self.load()
+        assert self.version is not None
+        self.client = Client(host, port, username, self.version.mc_version,
+                             protocol_path=self.data_root)
+        self.client.load_protocol()
+        return self.client
+
+    # ---------- 能力查询 ----------
+    def mod_block_names(self) -> list[str]:
+        """本实例 mod 提供的方块名（带命名空间）。"""
+        out: list[str] = []
+        for m in self.mods:
+            if m.ok:
+                out.extend(m.qualified_blocks())
+        return sorted(set(out))
+
+    def knows_block_name(self, name: str) -> bool:
+        """该方块名是否可用（原版注册表里有，或来自已装 mod）。
+
+        用途：在 agent 下指令前校验，避免"你说的这个方块这服没有"。
+
+        命名空间处理（实测需求）：agent 常常只说 `cask` 而不是
+        `expandeddelight:cask`。所以无命名空间时也去 mod 清单里找：
+          * 唯一命中 ⇒ 认识
+          * 多个 mod 都有同名方块 ⇒ **不**当成认识（歧义，应当让 agent 说全名）
+        """
+        if self.registry:
+            bare = name.split(":", 1)[1] if ":" in name else name
+            if bare in self.registry.by_name:
+                return True
+
+        if ":" in name:
+            return name in set(self.mod_block_names())
+
+        # 无命名空间：在 mod 方块名的「裸名」里查，但要歧义敏感
+        return len(self._mod_hits_bare(name)) == 1
+
+    def _mod_hits_bare(self, bare: str) -> list[str]:
+        """裸名 → 命中的完整限定名列表（用于歧义判定）。"""
+        hits: list[str] = []
+        for m in self.mods:
+            if m.ok and bare in m.block_names:
+                hits.extend(m.qualified_blocks_for(bare))
+        return hits
+
+    def expand_block_name(self, name: str) -> str | None:
+        """把裸名展开为完整限定名；歧义或无命中返回 None。"""
+        if ":" in name:
+            return name if name in set(self.mod_block_names()) else None
+        hits = self._mod_hits_bare(name)
+        return hits[0] if len(hits) == 1 else None
+
+    def resolve_block_name(self, state_id: int) -> str:
+        """state id → 名字，带 mod 归因（拿不到名字时明说是可能来自 mod）。"""
+        if self.registry is None:
+            return f"unknown({state_id})"
+        n = self.registry.name_of(state_id)
+        if n is not None:
+            return n
+        if self.mods:
+            return (f"unknown({state_id}) —— 本机注册表无此 state id；"
+                    f"本实例有 {len([m for m in self.mods if m.ok])} 个 mod，"
+                    f"极可能是 mod 方块")
+        return f"unknown({state_id})"
+
+    def _protocol_of(self, mc_version: str) -> int:
+        """从 minecraft-data 的 version.json 读协议号（无需连接）。
+
+        注意：传入的必须是**归一化后的** mc 版本（version.py 已保证）。
+        加载器版本的 id（如 1.20.1-forge-47.4.0）在这里查不到，
+        所以调用方先用 VersionInfo.mc_version。
+        """
+        import json as _json
+        parts = mc_version.split(".")
+        cands = [self.data_root / mc_version / "version.json"]
+        # 按 majorVersion 回退（1.20.1 -> 1.20）
+        for take in range(len(parts) - 1, 0, -1):
+            cands.append(self.data_root / ".".join(parts[:take]) / "version.json")
+        for cand in cands:
+            if cand.is_file():
+                try:
+                    return int(_json.loads(cand.read_text()).get("version", 0))
+                except Exception:
+                    return 0
+        return 0
+
+    # ---------- 摘要 ----------
+    def status(self) -> InstanceStatus:
+        st = InstanceStatus(path=str(self.path))
+        if self.version:
+            st.version_id = self.version.version_id
+            st.mc_version = self.version.mc_version
+            st.loader = self.version.loader
+        if self.client:
+            st.protocol = self.client.proto_num
+        elif self.version:
+            st.protocol = self._protocol_of(self.version.mc_version)
+        st.mods_loaded = len([m for m in self.mods if m.ok])
+        st.mods_failed = len([m for m in self.mods if not m.ok])
+        st.mod_blocks = len(self.mod_block_names())
+        st.loaded_chunks = self.world.loaded_count
+        st.unknown_states = len(self.world.unknown_state_ids)
+        st.notes = list(self.notes)
+        return st
+
+    def mods_summary(self) -> dict[str, Any]:
+        return summarize(self.mods)
+
+    def world_summary(self) -> dict[str, Any]:
+        return self.world.summary()
diff --git a/mcfold/modjar.py b/mcfold/modjar.py
index ad984e6..d7753ef 100644
--- a/mcfold/modjar.py
+++ b/mcfold/modjar.py
@@ -54,8 +54,18 @@ class ModInfo:
 
     def qualified_blocks(self) -> list[str]:
         """带命名空间的方块名，形如 expandeddelight:cask。"""
-        ns = self.mod_id or (self.namespaces[0] if self.namespaces else "")
-        return [f"{ns}:{n}" for n in self.block_names] if ns else list(self.block_names)
+        return [f"{self.namespace}:{n}" for n in self.block_names]
+
+    def qualified_blocks_for(self, block_name: str) -> list[str]:
+        """指定裸方块名在本 mod 下的完整限定名（不在则空）。"""
+        if block_name not in self.block_names:
+            return []
+        return [f"{self.namespace}:{block_name}"]
+
+    @property
+    def namespace(self) -> str:
+        """该 mod 的命名空间（通常 == mod_id）。"""
+        return self.mod_id or (self.namespaces[0] if self.namespaces else "")
 
 
 # ---------------- 元数据解析 ----------------
diff --git a/run_tests.sh b/run_tests.sh
new file mode 100755
index 0000000..219c4e2
--- /dev/null
+++ b/run_tests.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+# 统一测试入口。用法: ./run_tests.sh
+cd "$(dirname "$0")"
+total=0; fail=0
+for t in tests/test_*.py; do
+  name=$(basename "$t")
+  out=$(python3 "$t" 2>&1)
+  if echo "$out" | grep -qE "全部通过|通过$"; then
+    n=$(echo "$out" | grep -c "^  ✓")
+    total=$((total+n))
+    printf '  %-24s ✓ %2d 项\n' "$name" "$n"
+  else
+    fail=$((fail+1))
+    printf '  %-24s ✗ 失败\n' "$name"
+    echo "$out" | tail -5 | sed 's/^/      /'
+  fi
+done
+echo
+if [ $fail -eq 0 ]; then
+  echo "全部通过：$total 项，0 失败"
+else
+  echo "失败 $fail 个套件（共 $total 项通过）"; exit 1
+fi
diff --git a/tests/test_instance.py b/tests/test_instance.py
new file mode 100644
index 0000000..73aeea5
--- /dev/null
+++ b/tests/test_instance.py
@@ -0,0 +1,175 @@
+"""实例层回归：传入文件夹 → 拉起实例（版本 + mod + 方块表）。"""
+import sys, os, json, zipfile, tempfile, shutil
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+from mcfold.instance import Instance
+from mcfold.modjar import scan_mods
+
+BLOCKS_MOD = "/home/minecraft/mods/[扩充乐事] expandeddelight-0.1.4.jar"
+FORGE_MOD  = "/home/mc-test/mods/curtain-mc1.20.1-1.3.2.jar"
+REAL_INST  = "/home/newqqagent/mcview/store/vanilla-1.20.1"
+
+def build_instance(with_mods=True, version_id="1.20.1", mc=None):
+    """造一个临时实例文件夹（完整 MC 客户端安装形状）。
+
+    version_id 是目录名（可能是加载器 id）；mc 是它继承的原版版本。
+    """
+    d = tempfile.mkdtemp(prefix="mcfold-inst-")
+    ver = version_id
+    vdir = os.path.join(d, "versions", ver)
+    os.makedirs(vdir, exist_ok=True)
+    obj = {"id": ver, "mainClass": "net.minecraft.client.main.Main", "assets": "5"}
+    if mc and mc != ver:
+        obj["inheritsFrom"] = mc
+        obj["mainClass"] = ("io.github.zekerzhayard.forgewrapper.installer.Main"
+                            if "forge" in ver else
+                            "net.fabricmc.loader.impl.launch.knot.KnotClient")
+    with open(os.path.join(vdir, f"{ver}.json"), "w") as f:
+        json.dump(obj, f)
+    os.makedirs(os.path.join(d, "mods"), exist_ok=True)
+    if with_mods:
+        for src in (BLOCKS_MOD, FORGE_MOD):
+            if os.path.isfile(src):
+                shutil.copy(src, os.path.join(d, "mods"))
+    return d
+
+def test_load_from_folder():
+    """★ 用户口径：传入文件夹路径 → 拉起实例。"""
+    d = build_instance()
+    try:
+        inst = Instance(d).load()
+        st = inst.status()
+        assert st.mc_version == "1.20.1", st.mc_version
+        assert st.protocol == 763, st.protocol
+        assert st.loader == "vanilla", st.loader
+        print(f"  ✓ 传入文件夹拉起实例: {st.version_id} mc={st.mc_version} 协议={st.protocol}")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_mods_registered():
+    """★ 读取 mod jar 注册方块表。"""
+    d = build_instance()
+    try:
+        inst = Instance(d).load()
+        ms = inst.mods_summary()
+        assert ms["loaded"] == 2, ms
+        assert ms["block_name_count"] > 20, ms
+        names = inst.mod_block_names()
+        assert "expandeddelight:cask" in names, names[:5]
+        # 诚实边界必须体现在摘要里
+        assert "state id" in ms["note"]
+        print(f"  ✓ mod 注册: {ms['loaded']} 个 mod, {ms['block_name_count']} 个方块名")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_loader_version_normalization():
+    """forge 实例：mc_version 必须归一化（否则协议选错）。"""
+    d = build_instance(version_id="1.20.1-forge-47.4.0", mc="1.20.1")
+    try:
+        inst = Instance(d, prefer_version="1.20.1-forge-47.4.0").load()
+        st = inst.status()
+        assert st.mc_version == "1.20.1", st.mc_version
+        assert st.loader == "forge", st.loader
+        assert st.protocol == 763, st.protocol
+        print(f"  ✓ forge 归一化: id={st.version_id} → mc={st.mc_version} 协议={st.protocol}")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_block_name_validation():
+    """方块名校验：裸名可展开；歧义不误判。"""
+    d = build_instance()
+    try:
+        inst = Instance(d).load()
+        assert inst.knows_block_name("cask")
+        assert inst.expand_block_name("cask") == "expandeddelight:cask"
+        assert inst.knows_block_name("stone")
+        assert not inst.knows_block_name("definitely_not_a_block")
+        print("  ✓ 方块名校验: 裸名展开正确, 不存在的方块判否")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_ambiguous_bare_name():
+    """两个 mod 有同名方块时，裸名必须判为**不可用**（歧义）。"""
+    d = build_instance(with_mods=False)
+    try:
+        for mid in ("moda", "modb"):
+            with zipfile.ZipFile(os.path.join(d, "mods", f"{mid}.jar"), "w") as zf:
+                zf.writestr("fabric.mod.json",
+                            json.dumps({"id": mid, "name": mid, "version": "1"}))
+                zf.writestr(f"assets/{mid}/blockstates/shared_block.json", "{}")
+        inst = Instance(d).load()
+        assert not inst.knows_block_name("shared_block"), "有歧义却判为认识"
+        assert inst.knows_block_name("moda:shared_block"), "限定名应可用"
+        print("  ✓ 歧义处理: 裸名(两 mod 同名)判否, 限定名可判是")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_real_install_folder():
+    """对真实安装目录验证（无 mod 的 vanilla）。"""
+    if not os.path.isdir(REAL_INST):
+        print("  - 真实安装目录不存在，跳过"); return
+    inst = Instance(REAL_INST).load()
+    st = inst.status()
+    assert st.mc_version == "1.20.1" and st.protocol == 763, (st.mc_version, st.protocol)
+    assert inst.registry is not None and len(inst.registry.blocks) > 900
+    print(f"  ✓ 真实安装: {st.version_id} 协议={st.protocol} 原版方块={len(inst.registry.blocks)}")
+
+def test_resolve_block_name_mod_attribution():
+    """越界 state id 的报错必须**归因到 mod**（让降级可信）。"""
+    d = build_instance()
+    try:
+        inst = Instance(d).load()
+        msg = inst.resolve_block_name(99999)
+        assert msg.startswith("unknown("), msg
+        assert "mod" in msg, msg
+        print(f"  ✓ 越界归因: {msg[:46]}…")
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+
+def test_e2e_connect_from_instance():
+    """★ 端到端：实例文件夹 → 连服 → 登录（协议由文件夹决定，不硬编码）。"""
+    import socket, subprocess, time
+    HOST, PORT = "127.0.0.1", 25599
+    runtime = "/home/newqqagent/plugin_data/mc/runtime"
+    def reachable():
+        try:
+            socket.create_connection((HOST, PORT), timeout=2).close(); return True
+        except OSError:
+            return False
+    proc = None
+    if not reachable():
+        src = os.path.join(os.path.dirname(os.path.abspath(__file__)), "support_testserver.js")
+        if not os.path.isfile(src):
+            print("  - 无 support_testserver.js，跳过"); return
+        shutil.copy(src, runtime)
+        proc = subprocess.Popen(["node", "support_testserver.js", str(PORT)], cwd=runtime,
+                                stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True)
+        for _ in range(50):
+            if reachable(): break
+            time.sleep(0.2)
+    if not reachable():
+        print("  - 服务端不可用，跳过")
+        if proc: proc.kill()
+        return
+    d = build_instance()
+    try:
+        inst = Instance(d).load()
+        c = inst.connect(HOST, PORT, "McfoldBot")
+        r = c.run_smoke()
+        assert r["protocol"] == 763 and r["login_ok"], r
+        print(f"  ✓ 端到端: 文件夹→协议{r['protocol']}→登录成功 (mod {len(inst.mods)} 个)")
+        c.close()
+    finally:
+        shutil.rmtree(d, ignore_errors=True)
+        if proc:
+            proc.terminate()
+            try: proc.wait(timeout=5)
+            except Exception: proc.kill()
+            try: os.remove(os.path.join(runtime, "support_testserver.js"))
+            except OSError: pass
+
+if __name__ == "__main__":
+    for fn in [test_load_from_folder, test_mods_registered, test_loader_version_normalization,
+               test_block_name_validation, test_ambiguous_bare_name, test_real_install_folder,
+               test_resolve_block_name_mod_attribution, test_e2e_connect_from_instance]:
+        fn()
+    print("\n实例层：全部通过")