diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index feaa71a8..970ba2cf 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -1,6 +1,7 @@
+---
 name: 🧪 Playbook 测试套件
 
-on:
+"on":
   push:
     branches:
       - main
@@ -54,7 +55,8 @@ jobs:
 
           git clone "$REPO_URL" "$REPO_DIR"
 
-          if git -C "$REPO_DIR" cat-file -e "${TARGET_SHA}^{commit}" 2>/dev/null; then
+          if git -C "$REPO_DIR" cat-file -e \
+            "${TARGET_SHA}^{commit}" 2>/dev/null; then
             git -C "$REPO_DIR" checkout -f "$TARGET_SHA"
           else
             if [ -n "$TARGET_REF" ]; then
@@ -90,16 +92,11 @@ jobs:
           set -euo pipefail
 
           echo "========================================"
-          echo "🧪 Python CLI 测试"
+          echo "🧪 Python 测试"
           echo "========================================"
 
           cd "$REPO_DIR"
-          python3 -m unittest discover -s tests/cli -v
-
-          echo "========================================"
-          echo "🧪 Python 扩展测试"
-          echo "========================================"
-
+          echo "覆盖：CLI、subtree/snapshot 部署路线、模板同步、文档一致性"
           python3 -m unittest discover -s tests -p "test_*.py" -v
 
           echo "========================================"
diff --git a/README.md b/README.md
index 9102e386..ce03de8a 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ python scripts/playbook.py -config playbook.toml
 ```toml
 [playbook]
 project_root = "/path/to/project"
+playbook_root = "docs/standards/playbook"
+install_mode = "snapshot"
 
 [sync_rules]
 # force = true # 可选
@@ -81,12 +83,12 @@ project_name = "MyProject"
 
 ```bash
 # spec 写完后
-python <deploy_root>/scripts/playbook.py \
+python <playbook_root>/scripts/playbook.py \
   -record-spec docs/superpowers/specs/<topic>-design.md \
   -progress memory-bank/progress.md
 
 # plan 写完后
-python <deploy_root>/scripts/playbook.py \
+python <playbook_root>/scripts/playbook.py \
   -record-plan docs/superpowers/plans/<topic>.md \
   -progress memory-bank/progress.md
 ```
@@ -199,10 +201,11 @@ TSL 相关问题直接查阅 `rulesets/tsl/index.md` 与 `docs/tsl/`。
 先区分三个路径概念：
 
 - `project_root`：目标项目根目录。
-- `deploy_root`：相对于 `project_root` 的项目内目标目录。
-- 外部 clone 出来的 Playbook 路径（如 `/opt/playbook`）：只是执行部署脚本的位置，不是部署目标。
+- `playbook_root`：相对于 `project_root` 的项目内 Playbook 根目录。
+- `install_mode`：`subtree` 表示 Playbook 已由 git subtree 放在项目内；`snapshot` 表示从外部 clone 安装裁剪快照。
+- 外部 clone 出来的 Playbook 路径（如 `/opt/playbook`）：只是执行安装脚本的位置，不是项目内 Playbook 根目录。
 
-以 TSL 为例，Playbook 在项目内的默认部署根是 `docs/standards/playbook`；如果你把 `deploy_root` 改成 `custom/playbook`，则部署结果会落到 `<project_root>/custom/playbook`，文档和脚本入口也会跟着变成 `custom/playbook/docs/...`、`custom/playbook/scripts/...`。
+以 TSL 为例，Playbook 在项目内的默认根是 `docs/standards/playbook`；如果你把 `playbook_root` 改成 `custom/playbook`，则快照会落到 `<project_root>/custom/playbook`，文档和脚本入口也会跟着变成 `custom/playbook/docs/...`、`custom/playbook/scripts/...`。
 
 #### 方式一：`git subtree`
 
@@ -214,6 +217,8 @@ git subtree add --prefix docs/standards/playbook https://git.mytsl.cn/csh/playbo
 cat <<'EOF' > playbook.toml
 [playbook]
 project_root = "."
+playbook_root = "docs/standards/playbook"
+install_mode = "subtree"
 
 [sync_standards]
 langs = ["tsl"]
@@ -249,6 +254,8 @@ git commit -m ":package: deps(playbook): add tsl standards"
    # playbook.toml
    [playbook]
    project_root = "."
+   playbook_root = "docs/standards/playbook"
+   install_mode = "subtree"
 
    [sync_standards]
    langs = ["tsl", "cpp"]
@@ -277,19 +284,17 @@ git commit -m ":package: deps(playbook): add tsl standards"
    git clone https://git.mytsl.cn/csh/playbook.git /opt/playbook
    ```
 
-2. 在目标项目根创建 `playbook.toml`，并用 `deploy_root` 指定项目内的部署根。例如：
-
+2. 在目标项目根创建 `playbook.toml`，并用 `playbook_root` 指定项目内的 Playbook 根。例如：
    - `project_root` 写目标项目根目录。
-   - `deploy_root` 写目标项目内的相对路径。
-   - 不要把外部 clone 的路径（如 `/opt/playbook`）写进 `deploy_root`；那只是你执行脚本的位置。
+   - `playbook_root` 写目标项目内的相对路径。
+   - `install_mode = "snapshot"` 表示由外部 clone 安装项目内快照。
+   - 不要把外部 clone 的路径（如 `/opt/playbook`）写进 `playbook_root`；那只是你执行脚本的位置。
 
    ```toml
    [playbook]
    project_root = "."
-   deploy_root = "custom/playbook"
-
-   [vendor]
-   langs = ["tsl"]
+   playbook_root = "custom/playbook"
+   install_mode = "snapshot"
 
    [sync_standards]
    langs = ["tsl"]
@@ -308,10 +313,10 @@ git commit -m ":package: deps(playbook): add tsl standards"
 
 说明：
 
-- 这里的 `[vendor]` 是“把 Playbook 快照部署进目标项目”的执行步骤，不是第三种正式部署路线。
-- `deploy_root` 永远表示目标项目内的部署目录；它不是外部 clone 出来的 Playbook 仓库路径。
-- 外部 clone 场景下必须显式填写 `deploy_root`；脚本不会替你补默认部署目录。
-- 如果 `deploy_root = "custom/playbook"`，部署后的项目内入口会是 `custom/playbook/scripts/playbook.py`、`custom/playbook/docs/index.md`。
+- `install_mode = "snapshot"` 会先把 Playbook 裁剪快照安装到目标项目的 `playbook_root`，再执行后续同步动作。
+- `playbook_root` 永远表示目标项目内的 Playbook 根；它不是外部 clone 出来的 Playbook 仓库路径。
+- 外部 clone 场景下必须显式填写 `playbook_root`；脚本不会替你补默认项目内根目录。
+- 如果 `playbook_root = "custom/playbook"`，部署后的项目内入口会是 `custom/playbook/scripts/playbook.py`、`custom/playbook/docs/index.md`。
 
 ---
 
@@ -347,7 +352,7 @@ git commit -m ":package: deps(playbook): add tsl standards"
 ├── .gitattributes                    # 行尾/文本规范
 ├── AGENTS.md                         # Codex 入口（由 playbook 自动生成/更新）
 ├── CLAUDE.md                         # Claude Code 入口（自动注入 @AGENTS.md）
-├── <deploy_root>/                    # 本 Playbook 在项目内的部署根（默认 docs/standards/playbook）
+├── <playbook_root>/                  # 本 Playbook 在项目内的根（默认 docs/standards/playbook）
 │   ├── docs/
 │   ├── rulesets/
 │   ├── scripts/
diff --git a/SKILLS.md b/SKILLS.md
index 468dcdaa..8a6c3e01 100644
--- a/SKILLS.md
+++ b/SKILLS.md
@@ -110,10 +110,10 @@ no_backup = true
 如果你的项目已经把本 Playbook 部署到项目内，则在目标项目里执行：
 
 ```bash
-python <deploy_root>/scripts/playbook.py -config playbook.toml
+python <playbook_root>/scripts/playbook.py -config playbook.toml
 ```
 
-其中 `<deploy_root>` 默认为 `docs/standards/playbook`。
+其中 `<playbook_root>` 默认为 `docs/standards/playbook`。
 
 ---
 
@@ -158,7 +158,7 @@ python <deploy_root>/scripts/playbook.py -config playbook.toml
 - Python：`docs/python/style_guide.md`、`docs/python/tooling.md`、`docs/python/configuration.md`
 
 若你的项目把本 Playbook 部署到项目内，文档根路径为
-`<deploy_root>/docs/...`；其中 `<deploy_root>` 默认为 `docs/standards/playbook`，也可以按项目配置改成 `custom/playbook` 等自定义目录。
+`<playbook_root>/docs/...`；其中 `<playbook_root>` 默认为 `docs/standards/playbook`，也可以按项目配置改成 `custom/playbook` 等自定义目录。
 
 ---
 
diff --git a/playbook.toml.example b/playbook.toml.example
index 27e597cc..f99660de 100644
--- a/playbook.toml.example
+++ b/playbook.toml.example
@@ -2,14 +2,10 @@
 # 配置文件所在目录默认作为 project_root。
 
 [playbook]
-# project_root = "."            # 可选：目标项目根目录
-# deploy_root = "docs/standards/playbook"  # 项目内已部署时可省略；从外部 clone 执行时必填；值始终是相对于 project_root 的项目内路径，不是外部 clone 的 playbook 路径
-# claude_md = "CLAUDE.md"       # 可选：CLAUDE.md 位置（默认自动检测：根目录 → .claude/CLAUDE.md → 自动创建）
-
-[vendor]
-# 当从外部 clone 的 playbook 向项目内部署快照时启用
-# 外部 clone 路径只用于执行脚本；快照仍会写入 <project_root>/<deploy_root>
-# langs = ["tsl"]               # 可选：默认仅 tsl
+# project_root = "."                    # 可选：目标项目根目录
+# playbook_root = "docs/standards/playbook"  # 项目内 Playbook 根；相对于 project_root；不是外部 clone 的 playbook 路径
+# install_mode = "subtree"              # subtree|snapshot；subtree 表示已在项目内，snapshot 表示从外部 clone 安装快照
+# claude_md = "CLAUDE.md"               # 可选：CLAUDE.md 位置（默认自动检测：根目录 → .claude/CLAUDE.md → 自动创建）
 
 [sync_rules]
 # 同步 AGENT_RULES.md（配置节存在即启用）
diff --git a/scripts/playbook.py b/scripts/playbook.py
index 08eb25e9..8eb29507 100644
--- a/scripts/playbook.py
+++ b/scripts/playbook.py
@@ -14,7 +14,6 @@ except ModuleNotFoundError:  # Python < 3.11
     tomllib = None
 
 ORDER = [
-    "vendor",
     "sync_rules",
     "sync_memory_bank",
     "sync_prompts",
@@ -29,7 +28,14 @@ MAIN_LOOP_SPEC = importlib.util.spec_from_file_location("playbook_main_loop", MA
 assert MAIN_LOOP_SPEC and MAIN_LOOP_SPEC.loader
 MAIN_LOOP = importlib.util.module_from_spec(MAIN_LOOP_SPEC)
 MAIN_LOOP_SPEC.loader.exec_module(MAIN_LOOP)
-PATH_CONFIG_KEYS = {"project_root", "deploy_root", "agents_home", "codex_home", "skill_link"}
+PATH_CONFIG_KEYS = {
+    "project_root",
+    "playbook_root",
+    "deploy_root",
+    "agents_home",
+    "codex_home",
+    "skill_link",
+}
 DOCS_INDEX_SECTION_HEADINGS = {
     "common": "## 跨语言（common）",
     "tsl": "## TSL（tsl/tsf）",
@@ -275,13 +281,13 @@ def normalize_relative_dir(raw: object, label: str) -> str:
     return "." if normalized == "" else normalized
 
 
-def join_deploy_subpath(root: str, child: str) -> str:
+def join_playbook_subpath(root: str, child: str) -> str:
     if root in ("", "."):
         return child.lstrip("/")
     return f"{root.rstrip('/')}/{child.lstrip('/')}"
 
 
-def resolve_in_project_deploy_root(project_root: Path) -> str | None:
+def resolve_in_project_playbook_root(project_root: Path) -> str | None:
     try:
         rel = PLAYBOOK_ROOT.resolve().relative_to(project_root.resolve())
         if str(rel) != ".":
@@ -291,9 +297,8 @@ def resolve_in_project_deploy_root(project_root: Path) -> str | None:
     return None
 
 
-def config_requires_deploy_root(config: dict) -> bool:
+def config_uses_playbook_root(config: dict) -> bool:
     for key in (
-        "vendor",
         "sync_rules",
         "sync_memory_bank",
         "sync_prompts",
@@ -305,46 +310,74 @@ def config_requires_deploy_root(config: dict) -> bool:
     return False
 
 
-def resolve_configured_deploy_root(config: dict, project_root: Path) -> str:
+def validate_removed_config(config: dict) -> None:
+    if "vendor" in config:
+        raise ValueError(
+            "[vendor] is no longer supported; use [playbook].install_mode = "
+            '"snapshot" and configure languages in [sync_standards]'
+        )
+
+    playbook_config = config.get("playbook", {})
+    if not isinstance(playbook_config, dict):
+        raise ValueError("[playbook] must be a table")
+
+    if "deploy_root" in playbook_config:
+        raise ValueError(
+            "playbook.deploy_root is no longer supported; use playbook.playbook_root"
+        )
+    if "intall_mode" in playbook_config:
+        raise ValueError(
+            "playbook.intall_mode is not supported; use playbook.install_mode"
+        )
+
+
+def resolve_install_mode(config: dict) -> str:
+    playbook_config = config.get("playbook", {})
+    raw = "subtree"
+    if (
+        isinstance(playbook_config, dict)
+        and playbook_config.get("install_mode") is not None
+    ):
+        raw = playbook_config.get("install_mode")
+    mode = str(raw).strip().lower()
+    if mode not in ("subtree", "snapshot"):
+        raise ValueError(
+            "playbook.install_mode must be one of: subtree, snapshot"
+        )
+    return mode
+
+
+def resolve_configured_playbook_root(config: dict, project_root: Path) -> str:
     playbook_config = config.get("playbook", {})
     raw = None
     if isinstance(playbook_config, dict):
-        raw = playbook_config.get("deploy_root")
-    vendor_config = config.get("vendor", {})
-    if isinstance(vendor_config, dict) and vendor_config.get("target_dir") is not None:
-        raise ValueError(
-            "vendor.target_dir is no longer supported; use [playbook].deploy_root"
-        )
+        raw = playbook_config.get("playbook_root")
     if raw is not None and str(raw).strip():
-        return normalize_relative_dir(raw, "deploy_root")
+        return normalize_relative_dir(raw, "playbook_root")
 
-    in_project_deploy_root = resolve_in_project_deploy_root(project_root)
-    if in_project_deploy_root is not None:
-        return in_project_deploy_root
+    in_project_playbook_root = resolve_in_project_playbook_root(project_root)
+    if in_project_playbook_root is not None:
+        return in_project_playbook_root
 
-    if config_requires_deploy_root(config):
+    if resolve_install_mode(config) == "snapshot" or config_uses_playbook_root(config):
         raise ValueError(
-            "playbook.deploy_root is required when running from an external clone; "
-            "set it to the target project's relative deployment path"
+            "playbook.playbook_root is required when running from an external clone; "
+            "set it to the target project's relative Playbook path"
         )
 
     return "docs/standards/playbook"
 
 
-def resolve_deploy_root(context: dict) -> str:
-    project_root: Path = context["project_root"]
-    in_project_deploy_root = resolve_in_project_deploy_root(project_root)
-    if in_project_deploy_root is not None:
-        return in_project_deploy_root
-    return context["deploy_root"]
+def resolve_playbook_root(context: dict) -> str:
+    return context["playbook_root"]
 
 
 def resolve_docs_prefix(context: dict) -> str:
-    return join_deploy_subpath(resolve_deploy_root(context), "docs")
+    return join_playbook_subpath(resolve_playbook_root(context), "docs")
 
 
 def resolve_playbook_scripts(context: dict) -> str:
-    return join_deploy_subpath(resolve_deploy_root(context), "scripts")
+    return join_playbook_subpath(resolve_playbook_root(context), "scripts")
 
 
 def read_git_commit(root: Path) -> str:
@@ -408,9 +441,11 @@ def write_docs_index(dest_prefix: Path, langs: list[str]) -> None:
     docs_index.write_text("\n".join(lines) + "\n", encoding="utf-8", newline="\n")
 
 
-def write_snapshot_readme(dest_prefix: Path, deploy_root: str, langs: list[str]) -> None:
-    scripts_path = join_deploy_subpath(deploy_root, "scripts/playbook.py")
-    docs_index_path = join_deploy_subpath(deploy_root, "docs/index.md")
+def write_snapshot_readme(
+    dest_prefix: Path, playbook_root: str, langs: list[str]
+) -> None:
+    scripts_path = join_playbook_subpath(playbook_root, "scripts/playbook.py")
+    docs_index_path = join_playbook_subpath(playbook_root, "docs/index.md")
     lines = [
         "# Playbook（裁剪快照）",
         "",
@@ -424,7 +459,7 @@ def write_snapshot_readme(dest_prefix: Path, deploy_root: str, langs: list[str])
         f"python {scripts_path} -config playbook.toml",
         "```",
         "",
-        f"配置示例：`{join_deploy_subpath(deploy_root, 'playbook.toml.example')}`",
+        f"配置示例：`{join_playbook_subpath(playbook_root, 'playbook.toml.example')}`",
         "",
         "文档入口：",
         "",
@@ -453,23 +488,51 @@ def write_source_file(dest_prefix: Path, langs: list[str]) -> None:
     )
 
 
-def vendor_action(config: dict, context: dict) -> int:
+def snapshot_langs(config: dict) -> list[str]:
+    sync_standards = config.get("sync_standards")
+    if isinstance(sync_standards, dict):
+        return normalize_langs(sync_standards.get("langs"))
+    return normalize_langs(None)
+
+
+def is_generated_snapshot(path: Path) -> bool:
+    source = path / "SOURCE.md"
+    if not source.is_file():
+        return False
     try:
-        langs = normalize_langs(config.get("langs"))
+        return "Generated-by: scripts/playbook.py" in source.read_text(encoding="utf-8")
+    except OSError:
+        return False
+
+
+def install_snapshot(config: dict, context: dict) -> int:
+    try:
+        langs = snapshot_langs(config)
     except ValueError as exc:
         print(f"ERROR: {exc}", file=sys.stderr)
         return 2
 
-    deploy_root = context["deploy_root"]
-    target_path = Path(deploy_root)
-
+    playbook_root = context["playbook_root"]
+    target_path = Path(playbook_root)
     project_root: Path = context["project_root"]
     dest_prefix = project_root / target_path
     dest_standards = dest_prefix.parent
 
+    if dest_prefix.resolve() == PLAYBOOK_ROOT.resolve():
+        log(f"Snapshot already installed at {dest_prefix}")
+        return 0
+
     ensure_dir(dest_standards)
 
     if dest_prefix.exists():
+        if not is_generated_snapshot(dest_prefix):
+            print(
+                "ERROR: refusing to replace existing playbook_root because it is "
+                "not a generated snapshot; use install_mode = \"subtree\" for a "
+                "git subtree-managed Playbook",
+                file=sys.stderr,
+            )
+            return 2
         timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
         backup = dest_standards / f"{dest_prefix.name}.bak.{timestamp}"
         dest_prefix.rename(backup)
@@ -535,13 +598,29 @@ def vendor_action(config: dict, context: dict) -> int:
         copy2(example_config, dest_prefix / "playbook.toml.example")
 
     write_docs_index(dest_prefix, langs)
-    write_snapshot_readme(dest_prefix, deploy_root, langs)
+    write_snapshot_readme(dest_prefix, playbook_root, langs)
     write_source_file(dest_prefix, langs)
 
-    log(f"Vendored snapshot -> {dest_prefix}")
+    log(f"Installed snapshot -> {dest_prefix}")
     return 0
 
 
+def validate_subtree_install(context: dict) -> int:
+    project_root: Path = context["project_root"]
+    playbook_root = context["playbook_root"]
+    expected_root = (project_root / playbook_root).resolve()
+    if PLAYBOOK_ROOT.resolve() == expected_root:
+        return 0
+
+    print(
+        "ERROR: install_mode = \"subtree\" requires running the project-local "
+        f"Playbook script at "
+        f"{join_playbook_subpath(playbook_root, 'scripts/playbook.py')}",
+        file=sys.stderr,
+    )
+    return 2
+
+
 def replace_placeholders(
     text: str,
     project_name: str | None,
@@ -1413,8 +1492,6 @@ def format_md_action(config: dict, context: dict) -> int:
 
 def run_action(name: str, config: dict, context: dict) -> int:
     print(f"[action] {name}")
-    if name == "vendor":
-        return vendor_action(config, context)
     if name == "sync_rules":
         return sync_rules_action(config, context)
     if name == "sync_memory_bank":
@@ -1489,6 +1566,13 @@ def main(argv: list[str]) -> int:
         return 2
 
     config = load_config(config_path)
+    try:
+        validate_removed_config(config)
+        install_mode = resolve_install_mode(config)
+    except ValueError as exc:
+        print(f"ERROR: {exc}", file=sys.stderr)
+        return 2
+
     playbook_config = config.get("playbook", {})
     project_root = playbook_config.get("project_root")
     if project_root:
@@ -1499,7 +1583,7 @@ def main(argv: list[str]) -> int:
         root = config_path.parent
     resolved_root = root.resolve()
     try:
-        deploy_root = resolve_configured_deploy_root(config, resolved_root)
+        playbook_root = resolve_configured_playbook_root(config, resolved_root)
     except ValueError as exc:
         print(f"ERROR: {exc}", file=sys.stderr)
         return 2
@@ -1507,9 +1591,19 @@ def main(argv: list[str]) -> int:
         "project_root": resolved_root,
         "config_path": config_path.resolve(),
         "config": config,
-        "deploy_root": deploy_root,
+        "install_mode": install_mode,
+        "playbook_root": playbook_root,
     }
 
+    if install_mode == "snapshot":
+        result = install_snapshot(config, context)
+        if result != 0:
+            return result
+    elif config_uses_playbook_root(config):
+        result = validate_subtree_install(context)
+        if result != 0:
+            return result
+
     if should_sync_agents(config):
         result = sync_agents_template(context)
         if result != 0:
diff --git a/templates/README.md b/templates/README.md
index e56e8c4f..beceb536 100644
--- a/templates/README.md
+++ b/templates/README.md
@@ -82,6 +82,8 @@ templates/
 # playbook.toml
 [playbook]
 project_root = "/path/to/project"
+playbook_root = "docs/standards/playbook"
+install_mode = "snapshot"
 
 # 同步 AGENT_RULES.md（配置节存在即启用）
 [sync_rules]
@@ -98,15 +100,15 @@ project_name = "MyProject"
 ```
 
 ```bash
-python <deploy_root>/scripts/playbook.py -config playbook.toml
+python <playbook_root>/scripts/playbook.py -config playbook.toml
 ```
 
 参数说明见 `playbook.toml.example`（仓库根目录）或项目内的
-`<deploy_root>/playbook.toml.example`。
+`<playbook_root>/playbook.toml.example`。
 
-其中 `<deploy_root>` 默认为 `docs/standards/playbook`，
+其中 `<playbook_root>` 默认为 `docs/standards/playbook`，
 也可以按项目配置改成 `custom/playbook` 等自定义目录；
-对应文档入口会变成 `<deploy_root>/docs/...`。
+对应文档入口会变成 `<playbook_root>/docs/...`。
 
 如果你当前是在 **外部 clone 的 playbook 仓库** 中执行，而不是在目标项目内执行快照，请使用：
 
@@ -114,8 +116,8 @@ python <deploy_root>/scripts/playbook.py -config playbook.toml
 python scripts/playbook.py -config playbook.toml
 ```
 
-此时 `[vendor]` 会把快照写入 `<project_root>/<deploy_root>`；
-后续再在目标项目内使用 `<deploy_root>/scripts/playbook.py`
+此时 `install_mode = "snapshot"` 会把快照写入 `<project_root>/<playbook_root>`；
+后续再在目标项目内使用 `<playbook_root>/scripts/playbook.py`
 做同步更新。
 
 ### 配置节说明
@@ -296,8 +298,7 @@ project/
 
 ### ci/、cpp/、python/
 
-语言和 CI 配置模板。通过 playbook.py 的 `[vendor]`
-复制到快照中：
+语言和 CI 配置模板。`install_mode = "snapshot"` 安装快照时会复制这些模板：
 
 - `ci/gitea/`：Gitea Actions 工作流与辅助脚本。
   部署到快照 `templates/ci/`
@@ -307,7 +308,7 @@ project/
 - `python/`：`pyproject.toml`、`.editorconfig` 等文件。
   部署到快照 `templates/python/`
 
-> 注意：这些模板通过 `[vendor]` 复制到快照的 `templates/` 目录，需手动从快照复制到项目根目录使用。
+> 注意：这些模板会复制到快照的 `templates/` 目录，需手动从快照复制到项目根目录使用。
 > 其中 `ci/gitea/` 应按 `templates/ci/README.md` 的说明，整块复制 `.gitea/` 目录，而不只是复制 workflows。
 
 **使用方式**：
@@ -316,14 +317,16 @@ project/
 # playbook.toml - 生成包含这些模板的快照
 [playbook]
 project_root = "/path/to/project"
+playbook_root = "docs/standards/playbook"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
 langs = ["tsl", "cpp", "python"]
 ```
 
 ```bash
 python scripts/playbook.py -config playbook.toml
-# 然后手动从 <deploy_root>/templates/ 复制所需配置到项目根目录
+# 然后手动从 <playbook_root>/templates/ 复制所需配置到项目根目录
 ```
 
 ## 与 playbook 其他部分的关系
@@ -335,14 +338,14 @@ playbook/
 ├── docs/            # 权威静态文档
 ├── templates/       # 本目录：项目架构模板 → 部署到 memory-bank/ 等
 └── scripts/
-    └── playbook.py    # 统一入口：vendor / sync_*
+    └── playbook.py    # 统一入口：snapshot install / sync_*
 ```
 
 ## 完整部署流程
 
 ```bash
 # 1. 准备配置并执行统一入口
-python <deploy_root>/scripts/playbook.py -config playbook.toml
+python <playbook_root>/scripts/playbook.py -config playbook.toml
 
 # 2. 编辑 memory-bank/*.md 填写项目信息
 
diff --git a/tests/README.md b/tests/README.md
index 312f63f5..8e76a776 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -16,7 +16,7 @@ tests/
 ├── test_no_backup_flags.py         # no_backup 行为测试
 ├── test_playbook_typing_imports.py # playbook.py typing 导入兼容性测试
 ├── test_sync_directory_actions.py  # sync_memory_bank/sync_prompts 行为测试
-├── test_vendor_snapshot_templates.py # vendor 快照模板完整性测试
+├── test_vendor_snapshot_templates.py # snapshot 快照模板完整性测试
 ├── test_main_loop_cli.py           # main_loop CLI 测试
 ├── test_thirdparty_skills_pipeline.py # thirdparty skills 流水线配置与同步产物测试
 ├── test_sync_templates_placeholders.py # 占位符替换测试（sync_rules/sync_standards）
@@ -70,7 +70,7 @@ sh tests/integration/check_doc_links.sh
 
 - CLI 参数解析与帮助信息
 - TOML 配置解析与动作顺序
-- vendor/sync_rules/sync_memory_bank/sync_prompts/sync_standards 等基础动作落地
+- snapshot install/sync_rules/sync_memory_bank/sync_prompts/sync_standards 等基础动作落地
 
 ### 2. 模板验证测试 (templates/)
 
diff --git a/tests/cli/test_playbook_cli.py b/tests/cli/test_playbook_cli.py
index 92d69bfd..1c570fc7 100644
--- a/tests/cli/test_playbook_cli.py
+++ b/tests/cli/test_playbook_cli.py
@@ -125,7 +125,8 @@ class PlaybookCliTests(unittest.TestCase):
         config_body = f"""
 [playbook]
 project_root = "."
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [format_md]
 
@@ -142,7 +143,7 @@ langs = ["tsl"]
         self.assertIn("sync_standards", output)
         self.assertIn("format_md", output)
 
-    def test_format_md_only_does_not_require_deploy_root(self):
+    def test_format_md_only_does_not_require_playbook_root(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             config_body = f"""
 [playbook]
@@ -157,15 +158,55 @@ project_root = "{tmp_dir}"
 
         self.assertEqual(result.returncode, 0)
 
-    def test_vendor_creates_snapshot(self):
+    def test_vendor_section_is_rejected(self):
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            root = Path(tmp_dir)
+            config_body = f"""
+[playbook]
+project_root = "{tmp_dir}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
+
+[vendor]
+langs = ["tsl"]
+"""
+            config_path = write_config(root, "playbook.toml", config_body)
+
+            result = run_cli("-config", str(config_path))
+
+            self.assertNotEqual(result.returncode, 0)
+            self.assertIn("[vendor]", result.stdout + result.stderr)
+
+    def test_deploy_root_is_rejected(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
 deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
+langs = ["tsl"]
+"""
+            config_path = write_config(root, "playbook.toml", config_body)
+
+            result = run_cli("-config", str(config_path))
+
+            self.assertNotEqual(result.returncode, 0)
+            self.assertIn("deploy_root", result.stdout + result.stderr)
+            self.assertIn("playbook_root", result.stdout + result.stderr)
+
+    def test_snapshot_install_creates_snapshot(self):
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            root = Path(tmp_dir)
+            config_body = f"""
+[playbook]
+project_root = "{tmp_dir}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
+
+[sync_standards]
 langs = ["tsl"]
 """
             config_path = write_config(root, "playbook.toml", config_body)
@@ -176,15 +217,16 @@ langs = ["tsl"]
             self.assertEqual(result.returncode, 0)
             self.assertTrue(snapshot.is_file())
 
-    def test_vendor_docs_index_uses_new_tsl_entrypoints(self):
+    def test_snapshot_docs_index_uses_new_tsl_entrypoints(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
 langs = ["tsl"]
 """
             config_path = write_config(root, "playbook.toml", config_body)
@@ -201,14 +243,15 @@ langs = ["tsl"]
             self.assertIn("`tsl/reference/index.md`", text)
             self.assertNotIn("`tsl/syntax_book/index.md`", text)
 
-    def test_external_clone_requires_explicit_deploy_root(self):
+    def test_external_clone_requires_explicit_playbook_root(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
 langs = ["tsl"]
 """
             config_path = write_config(root, "playbook.toml", config_body)
@@ -216,14 +259,34 @@ langs = ["tsl"]
             result = run_cli("-config", str(config_path))
 
             self.assertNotEqual(result.returncode, 0)
-            self.assertIn("deploy_root", result.stdout + result.stderr)
+            self.assertIn("playbook_root", result.stdout + result.stderr)
+
+    def test_subtree_mode_requires_project_local_script(self):
+        with tempfile.TemporaryDirectory() as tmp_dir:
+            root = Path(tmp_dir)
+            config_body = f"""
+[playbook]
+project_root = "{tmp_dir}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "subtree"
+
+[sync_standards]
+langs = ["tsl"]
+"""
+            config_path = write_config(root, "playbook.toml", config_body)
+
+            result = run_cli("-config", str(config_path))
+
+            self.assertNotEqual(result.returncode, 0)
+            self.assertIn("project-local Playbook script", result.stdout + result.stderr)
 
     def test_sync_memory_bank_creates_memory_bank(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -242,7 +305,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -265,7 +329,8 @@ langs = ["tsl"]
                 f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -282,7 +347,8 @@ no_backup = true
                 f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl", "cpp"]
@@ -304,7 +370,8 @@ no_backup = true
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl", "markdown"]
@@ -326,7 +393,8 @@ langs = ["tsl", "markdown"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -352,7 +420,8 @@ langs = ["tsl"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{target}"
@@ -453,7 +522,8 @@ skills = ["brainstorming"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_root}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{target}"
@@ -475,7 +545,8 @@ skills = ["karpathy-guidelines"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{target}"
@@ -496,7 +567,8 @@ skills = ["tsl-guide"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 codex_home = "{target}"
@@ -511,17 +583,15 @@ skills = ["brainstorming"]
             self.assertNotEqual(result.returncode, 0)
             self.assertIn("codex_home", result.stdout + result.stderr)
 
-    def test_external_clone_flow_rewrites_links_with_configured_deploy_root(self):
+    def test_external_clone_flow_rewrites_links_with_configured_playbook_root(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
             agents_home = root / "agents-home"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
-
-[vendor]
-langs = ["tsl"]
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -545,23 +615,28 @@ skills = ["style-cleanup"]
     def test_deployed_snapshot_rewrites_links_from_snapshot_location(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
-            vendor_config = write_config(
+            install_config = write_config(
                 root,
-                "vendor.toml",
+                "install.toml",
                 f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
 langs = ["tsl"]
 """,
             )
 
-            vendor_result = run_cli("-config", str(vendor_config))
-            self.assertEqual(vendor_result.returncode, 0, msg=vendor_result.stdout + vendor_result.stderr)
+            install_result = run_cli("-config", str(install_config))
+            self.assertEqual(
+                install_result.returncode,
+                0,
+                msg=install_result.stdout + install_result.stderr,
+            )
 
-            vendored_script = root / CUSTOM_DEPLOY_ROOT / "scripts" / "playbook.py"
+            snapshot_script = root / CUSTOM_DEPLOY_ROOT / "scripts" / "playbook.py"
             agents_home = root / "local-agents"
             sync_config = write_config(
                 root,
@@ -569,7 +644,8 @@ langs = ["tsl"]
                 f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -582,7 +658,7 @@ skills = ["style-cleanup"]
 """,
             )
 
-            sync_result = run_script(vendored_script, "-config", str(sync_config))
+            sync_result = run_script(snapshot_script, "-config", str(sync_config))
             self.assertEqual(sync_result.returncode, 0, msg=sync_result.stdout + sync_result.stderr)
             self.assert_style_cleanup_tsl_docs_prefix(
                 root, agents_home, f"{CUSTOM_DEPLOY_ROOT}/docs"
@@ -593,7 +669,8 @@ skills = ["style-cleanup"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -619,7 +696,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -650,7 +728,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -682,7 +761,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -708,7 +788,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -730,7 +811,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{agents_home}"
@@ -759,7 +841,8 @@ skills = ["commit-message"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{agents_home}"
@@ -784,7 +867,8 @@ no_backup = true
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{CUSTOM_DEPLOY_ROOT}"
+playbook_root = "{CUSTOM_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{agents_home}"
diff --git a/tests/test_deployment_routes_e2e.py b/tests/test_deployment_routes_e2e.py
index 2738c98a..989d62f9 100644
--- a/tests/test_deployment_routes_e2e.py
+++ b/tests/test_deployment_routes_e2e.py
@@ -85,6 +85,8 @@ class DeploymentRoutesE2ETests(unittest.TestCase):
                 """
 [playbook]
 project_root = "."
+playbook_root = "docs/standards/playbook"
+install_mode = "subtree"
 
 [sync_rules]
 no_backup = true
@@ -119,7 +121,7 @@ no_backup = true
             self.assertIn("@AGENT_RULES.md", text)
             self.assertIn("<!-- playbook:claude:start -->", text)
 
-    def test_external_clone_deployment_vendors_snapshot_and_updates_claude(self):
+    def test_external_clone_deployment_installs_snapshot_and_updates_claude(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             tmp_root = Path(tmp_dir)
             external_clone = tmp_root / "playbook"
@@ -137,10 +139,8 @@ no_backup = true
                 f"""
 [playbook]
 project_root = "."
-deploy_root = "{CUSTOM_DEPLOY_ROOT.as_posix()}"
-
-[vendor]
-langs = ["tsl", "markdown"]
+playbook_root = "{CUSTOM_DEPLOY_ROOT.as_posix()}"
+install_mode = "snapshot"
 
 [sync_rules]
 no_backup = true
diff --git a/tests/test_gitattributes_modes.py b/tests/test_gitattributes_modes.py
index 3e92131c..8c8421ad 100644
--- a/tests/test_gitattributes_modes.py
+++ b/tests/test_gitattributes_modes.py
@@ -34,7 +34,8 @@ class GitattributesModeTests(unittest.TestCase):
         config_body = f"""
 [playbook]
 project_root = \"{root}\"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = [\"tsl\"]
diff --git a/tests/test_no_backup_flags.py b/tests/test_no_backup_flags.py
index 6c246289..3608b900 100644
--- a/tests/test_no_backup_flags.py
+++ b/tests/test_no_backup_flags.py
@@ -27,7 +27,8 @@ class NoBackupFlagsTests(unittest.TestCase):
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_rules]
 force = true
@@ -56,7 +57,8 @@ no_backup = true
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["tsl"]
@@ -85,7 +87,8 @@ no_backup = true
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [install_skills]
 agents_home = "{root / 'agents'}"
diff --git a/tests/test_sync_directory_actions.py b/tests/test_sync_directory_actions.py
index af7aa947..2e07f4fc 100644
--- a/tests/test_sync_directory_actions.py
+++ b/tests/test_sync_directory_actions.py
@@ -29,7 +29,8 @@ class SyncDirectoryActionsTests(unittest.TestCase):
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
@@ -54,7 +55,8 @@ project_name = "Demo"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_prompts]
 """
@@ -82,7 +84,8 @@ deploy_root = "{DEFAULT_DEPLOY_ROOT}"
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_memory_bank]
 project_name = "Demo"
diff --git a/tests/test_sync_templates_placeholders.py b/tests/test_sync_templates_placeholders.py
index 7ec8cb3b..04a478e8 100644
--- a/tests/test_sync_templates_placeholders.py
+++ b/tests/test_sync_templates_placeholders.py
@@ -222,7 +222,8 @@ class SyncTemplatesPlaceholdersTests(unittest.TestCase):
             config_body = f"""
 [playbook]
 project_root = \"{tmp_dir}\"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_rules]
 
@@ -267,31 +268,16 @@ langs = [\"cpp\", \"tsl\"]
             self.assertNotIn("{{PLAYBOOK_SCRIPTS}}", rules_text)
             self.assertFalse(rules_text.endswith("\n\n"))
 
-    def test_sync_standards_rewrites_typescript_docs_prefix_for_vendored_playbook(self):
+    def test_sync_standards_rewrites_typescript_docs_prefix_for_snapshot_playbook(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             root = Path(tmp_dir)
-            vendor_config = root / "vendor.toml"
-            vendor_config.write_text(
+            install_config = root / "install.toml"
+            install_config.write_text(
                 f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
-
-[vendor]
-langs = ["typescript"]
-""",
-                encoding="utf-8",
-            )
-
-            vendor_result = run_cli("-config", str(vendor_config))
-            self.assertEqual(vendor_result.returncode, 0, msg=vendor_result.stderr)
-
-            sync_config = root / "sync.toml"
-            sync_config.write_text(
-                f"""
-[playbook]
-project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_standards]
 langs = ["typescript"]
@@ -299,11 +285,28 @@ langs = ["typescript"]
                 encoding="utf-8",
             )
 
-            vendored_script = (
+            install_result = run_cli("-config", str(install_config))
+            self.assertEqual(install_result.returncode, 0, msg=install_result.stderr)
+
+            sync_config = root / "sync.toml"
+            sync_config.write_text(
+                f"""
+[playbook]
+project_root = "{tmp_dir}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
+
+[sync_standards]
+langs = ["typescript"]
+""",
+                encoding="utf-8",
+            )
+
+            snapshot_script = (
                 root / "docs" / "standards" / "playbook" / "scripts" / "playbook.py"
             )
             sync_result = run_script(
-                vendored_script, "-config", str(sync_config), cwd=root
+                snapshot_script, "-config", str(sync_config), cwd=root
             )
             self.assertEqual(sync_result.returncode, 0, msg=sync_result.stderr)
 
@@ -317,7 +320,8 @@ langs = ["typescript"]
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
 [sync_rules]
 
diff --git a/tests/test_tsl_entrypoints_consistency.py b/tests/test_tsl_entrypoints_consistency.py
index abcdc3cf..bd4303ab 100644
--- a/tests/test_tsl_entrypoints_consistency.py
+++ b/tests/test_tsl_entrypoints_consistency.py
@@ -66,19 +66,20 @@ class TslEntrypointsConsistencyTests(unittest.TestCase):
         self.assertIn("方式一：git subtree", text)
         self.assertIn("方式二：外部 clone 后执行部署", text)
         self.assertIn("`project_root`：目标项目根目录", text)
-        self.assertIn("`deploy_root`：相对于 `project_root` 的项目内目标目录", text)
+        self.assertIn("`playbook_root`：相对于 `project_root` 的项目内 Playbook 根目录", text)
         self.assertIn("不是外部 clone 出来的 Playbook 仓库路径", text)
-        self.assertIn("外部 clone 场景下必须显式填写 `deploy_root`", text)
+        self.assertIn("外部 clone 场景下必须显式填写 `playbook_root`", text)
         self.assertNotIn("方式二：手动复制快照", text)
         self.assertNotIn("方式三：CLI 裁剪复制", text)
-        self.assertNotIn("如果省略 `deploy_root`，默认仍部署到 `docs/standards/playbook`", text)
+        self.assertNotIn("如果省略 `playbook_root`，默认仍部署到 `docs/standards/playbook`", text)
 
-    def test_playbook_example_defines_deploy_root_as_target_path(self):
+    def test_playbook_example_defines_playbook_root_as_target_path(self):
         text = PLAYBOOK_EXAMPLE.read_text(encoding="utf-8")
-        self.assertIn('deploy_root = "docs/standards/playbook"', text)
+        self.assertIn('playbook_root = "docs/standards/playbook"', text)
+        self.assertIn('install_mode = "subtree"', text)
         self.assertIn("相对于 project_root", text)
         self.assertIn("不是外部 clone 的 playbook 路径", text)
-        self.assertIn("从外部 clone 执行时必填", text)
+        self.assertIn("snapshot 表示从外部 clone 安装快照", text)
         self.assertNotIn("target_dir", text)
 
     def test_deployment_docs_do_not_reference_legacy_terms(self):
diff --git a/tests/test_vendor_snapshot_templates.py b/tests/test_vendor_snapshot_templates.py
index 8e84a6bc..1bd259ff 100644
--- a/tests/test_vendor_snapshot_templates.py
+++ b/tests/test_vendor_snapshot_templates.py
@@ -17,15 +17,16 @@ def run_cli(*args):
     )
 
 
-class VendorSnapshotTemplatesTests(unittest.TestCase):
-    def test_vendor_includes_core_templates(self):
+class SnapshotTemplatesTests(unittest.TestCase):
+    def test_snapshot_install_includes_core_templates(self):
         with tempfile.TemporaryDirectory() as tmp_dir:
             config_body = f"""
 [playbook]
 project_root = "{tmp_dir}"
-deploy_root = "{DEFAULT_DEPLOY_ROOT}"
+playbook_root = "{DEFAULT_DEPLOY_ROOT}"
+install_mode = "snapshot"
 
-[vendor]
+[sync_standards]
 langs = ["tsl"]
 """
             config_path = Path(tmp_dir) / "playbook.toml"