diff --git a/.env.example b/.env.example
index 0a83caf..a034a29 100644
--- a/.env.example
+++ b/.env.example
@@ -61,3 +61,9 @@ batchsize="10"
 
 # Frequency penalty - adjust according to your needs
 frequency_penalty= 0.2
+
+# TL Inspector (Step 8 playtest) — editor opened when clicking a source line in-game
+# tlEditorCmd: 'auto' scans for VS Code / Cursor, or set an absolute path to any editor exe
+tlEditorCmd='auto'
+# tlWorkspaceFolder: 'auto' uses the game root folder, or set a custom workspace path
+tlWorkspaceFolder='auto'
diff --git a/gui/workflow_tab.py b/gui/workflow_tab.py
index 045de82..7237ad5 100644
--- a/gui/workflow_tab.py
+++ b/gui/workflow_tab.py
@@ -29,6 +29,7 @@ from PyQt5.QtGui import QFont
 from PyQt5.QtWidgets import (
     QApplication,
     QCheckBox,
+    QComboBox,
     QFileDialog,
     QFrame,
     QGridLayout,
@@ -719,6 +720,7 @@ class WorkflowTab(QWidget):
             self._populate_p2_checkboxes()
         if index == 8:
             self._refresh_tl_inspector_status()
+            self._load_tli_editor_settings()
 
     def _register_import_button(self, button: QPushButton) -> None:
         self._import_buttons.append(button)
@@ -2435,6 +2437,87 @@ class WorkflowTab(QWidget):
         self._tli_status_label.setStyleSheet("color:#7a7a7a;font-size:13px;")
         inner.addWidget(self._tli_status_label)
 
+        editor_title = QLabel("Editor settings")
+        editor_title.setStyleSheet("color:#4ec9b0;font-size:12px;font-weight:bold;padding-top:4px;")
+        inner.addWidget(editor_title)
+
+        editor_row = QHBoxLayout()
+        editor_row.setSpacing(6)
+        editor_lbl = QLabel("Editor:")
+        editor_lbl.setFixedWidth(72)
+        editor_lbl.setStyleSheet("color:#9d9d9d;font-size:12px;")
+        editor_row.addWidget(editor_lbl)
+        self._tli_editor_combo = QComboBox()
+        self._tli_editor_combo.setMinimumWidth(280)
+        self._tli_editor_combo.currentIndexChanged.connect(self._on_tli_editor_combo_changed)
+        editor_row.addWidget(self._tli_editor_combo, 1)
+        detect_btn = _make_btn("Detect", "#4a4a4a")
+        detect_btn.setFixedWidth(72)
+        detect_btn.setToolTip("Scan this PC for VS Code, Insiders, or Cursor")
+        detect_btn.clicked.connect(self._detect_tli_editors)
+        editor_row.addWidget(detect_btn)
+        inner.addLayout(editor_row)
+
+        custom_row = QHBoxLayout()
+        custom_row.setSpacing(6)
+        custom_row.addSpacing(72)
+        self._tli_editor_custom = QLineEdit()
+        self._tli_editor_custom.setPlaceholderText("Path to editor executable (when Custom is selected)")
+        self._tli_editor_custom.setEnabled(False)
+        custom_row.addWidget(self._tli_editor_custom, 1)
+        browse_editor_btn = _make_btn("Browse…", "#4a4a4a")
+        browse_editor_btn.setFixedWidth(88)
+        browse_editor_btn.clicked.connect(self._browse_tli_editor)
+        custom_row.addWidget(browse_editor_btn)
+        inner.addLayout(custom_row)
+
+        self._tli_detect_label = QLabel("")
+        self._tli_detect_label.setWordWrap(True)
+        self._tli_detect_label.setStyleSheet("color:#6a6a6a;font-size:11px;padding-left:72px;")
+        inner.addWidget(self._tli_detect_label)
+
+        ws_row = QHBoxLayout()
+        ws_row.setSpacing(6)
+        ws_lbl = QLabel("Workspace:")
+        ws_lbl.setFixedWidth(72)
+        ws_lbl.setStyleSheet("color:#9d9d9d;font-size:12px;")
+        ws_row.addWidget(ws_lbl)
+        self._tli_workspace_auto = QCheckBox("Use game folder (auto)")
+        self._tli_workspace_auto.setChecked(True)
+        self._tli_workspace_auto.setStyleSheet("color:#cccccc;font-size:12px;")
+        self._tli_workspace_auto.toggled.connect(self._on_tli_workspace_auto_toggled)
+        ws_row.addWidget(self._tli_workspace_auto)
+        ws_row.addStretch()
+        inner.addLayout(ws_row)
+
+        ws_custom_row = QHBoxLayout()
+        ws_custom_row.setSpacing(6)
+        ws_custom_row.addSpacing(72)
+        self._tli_workspace_edit = QLineEdit()
+        self._tli_workspace_edit.setPlaceholderText("Custom VS Code / Cursor workspace folder")
+        self._tli_workspace_edit.setEnabled(False)
+        ws_custom_row.addWidget(self._tli_workspace_edit, 1)
+        browse_ws_btn = _make_btn("Browse…", "#4a4a4a")
+        browse_ws_btn.setFixedWidth(88)
+        browse_ws_btn.clicked.connect(self._browse_tli_workspace)
+        ws_custom_row.addWidget(browse_ws_btn)
+        inner.addLayout(ws_custom_row)
+
+        cfg_btn_row = QHBoxLayout()
+        cfg_btn_row.setSpacing(8)
+        save_tli_btn = _make_btn("✔  Save settings", "#3a5a7a")
+        save_tli_btn.setFixedWidth(140)
+        save_tli_btn.setToolTip("Write editor settings to .env (used on Install / Apply)")
+        save_tli_btn.clicked.connect(self._save_tli_editor_settings)
+        cfg_btn_row.addWidget(save_tli_btn)
+        apply_tli_btn = _make_btn("↻  Apply to game", "#3a5a7a")
+        apply_tli_btn.setFixedWidth(140)
+        apply_tli_btn.setToolTip("Update the installed TLInspector.js in your game folder")
+        apply_tli_btn.clicked.connect(self._apply_tli_editor_settings)
+        cfg_btn_row.addWidget(apply_tli_btn)
+        cfg_btn_row.addStretch()
+        inner.addLayout(cfg_btn_row)
+
         tips = QLabel(
             "<ul style='margin:4px 0;padding-left:18px;color:#9d9d9d;font-size:12px;'>"
             "<li>Run this <b>after exporting</b> translations so the game files are up to date.</li>"
@@ -2466,6 +2549,155 @@ class WorkflowTab(QWidget):
 
         layout.addWidget(box)
         self._step8_playtest_box = box
+        self._populate_tli_editor_combo()
+        self._load_tli_editor_settings()
+
+    def _populate_tli_editor_combo(self, select: str | None = None):
+        """Fill editor dropdown with auto-detect, found editors, and custom."""
+        from util.tl_inspector.config import detect_editors
+
+        combo = self._tli_editor_combo
+        combo.blockSignals(True)
+        combo.clear()
+        combo.addItem("Auto-detect (recommended)", "auto")
+        for label, path in detect_editors():
+            combo.addItem(f"{label} — {path}", str(path))
+        combo.addItem("Custom path…", "__custom__")
+
+        want = select
+        if want is None:
+            try:
+                from util.tl_inspector.config import load_config
+                want = load_config().get("editorCmd", "auto")
+            except Exception:
+                want = "auto"
+
+        idx = combo.findData(want) if want else 0
+        if idx >= 0:
+            combo.setCurrentIndex(idx)
+        elif want and want != "auto":
+            custom_idx = combo.findData("__custom__")
+            combo.setCurrentIndex(custom_idx if custom_idx >= 0 else 0)
+            self._tli_editor_custom.setText(want)
+        else:
+            combo.setCurrentIndex(0)
+        combo.blockSignals(False)
+        self._on_tli_editor_combo_changed()
+        self._update_tli_detect_label()
+
+    def _update_tli_detect_label(self):
+        from util.tl_inspector.config import detect_editors, detect_primary_editor
+
+        found = detect_editors()
+        primary = detect_primary_editor()
+        if primary:
+            extra = f" ({len(found)} found)" if len(found) > 1 else ""
+            self._tli_detect_label.setText(f"Detected on this PC: {primary}{extra}")
+        else:
+            self._tli_detect_label.setText(
+                "No VS Code / Cursor found — install one or choose Custom path."
+            )
+
+    def _load_tli_editor_settings(self):
+        """Load TL Inspector editor settings from .env into Step 8 controls."""
+        try:
+            from util.tl_inspector.config import load_config
+            cfg = load_config()
+        except Exception:
+            cfg = {"editorCmd": "auto", "workspaceFolder": "auto"}
+
+        self._populate_tli_editor_combo(select=cfg.get("editorCmd", "auto"))
+        ws = cfg.get("workspaceFolder", "auto")
+        auto_ws = not ws or ws == "auto"
+        self._tli_workspace_auto.blockSignals(True)
+        self._tli_workspace_auto.setChecked(auto_ws)
+        self._tli_workspace_auto.blockSignals(False)
+        self._tli_workspace_edit.setEnabled(not auto_ws)
+        self._tli_workspace_edit.setText("" if auto_ws else ws)
+
+    def _resolve_tli_config(self) -> dict:
+        """Build config dict from Step 8 editor controls."""
+        mode = self._tli_editor_combo.currentData()
+        if mode == "__custom__":
+            editor = self._tli_editor_custom.text().strip() or "auto"
+        elif mode:
+            editor = str(mode)
+        else:
+            editor = "auto"
+
+        if self._tli_workspace_auto.isChecked():
+            workspace = "auto"
+        else:
+            workspace = self._tli_workspace_edit.text().strip() or "auto"
+
+        return {"editorCmd": editor, "workspaceFolder": workspace}
+
+    def _on_tli_editor_combo_changed(self, _index: int | None = None):
+        custom = self._tli_editor_combo.currentData() == "__custom__"
+        self._tli_editor_custom.setEnabled(custom)
+
+    def _on_tli_workspace_auto_toggled(self, checked: bool):
+        self._tli_workspace_edit.setEnabled(not checked)
+
+    def _detect_tli_editors(self):
+        try:
+            from util.tl_inspector.config import load_config
+            current = load_config().get("editorCmd", "auto")
+        except Exception:
+            current = "auto"
+        self._populate_tli_editor_combo(select=current)
+        self._log("🔍 Scanned for VS Code / Cursor installations.")
+
+    def _browse_tli_editor(self):
+        start = self._tli_editor_custom.text() or self._setting("last_tli_editor", "")
+        path, _ = QFileDialog.getOpenFileName(
+            self,
+            "Select Editor Executable",
+            start,
+            "Executables (*.exe);;All Files (*)",
+        )
+        if not path:
+            return
+        self._save_setting("last_tli_editor", path)
+        custom_idx = self._tli_editor_combo.findData("__custom__")
+        if custom_idx >= 0:
+            self._tli_editor_combo.setCurrentIndex(custom_idx)
+        self._tli_editor_custom.setText(path)
+
+    def _browse_tli_workspace(self):
+        start = self._tli_workspace_edit.text() or self.folder_edit.text() or ""
+        folder = QFileDialog.getExistingDirectory(self, "Select Workspace Folder", start)
+        if folder:
+            self._tli_workspace_auto.setChecked(False)
+            self._tli_workspace_edit.setText(folder)
+
+    def _save_tli_editor_settings(self):
+        cfg = self._resolve_tli_config()
+        try:
+            from util.tl_inspector.config import save_config
+            save_config(cfg)
+            self._log(
+                "✅ TL Inspector settings saved — "
+                f"editor={cfg['editorCmd']}, workspace={cfg['workspaceFolder']}"
+            )
+        except Exception as exc:
+            self._log(f"❌ Could not save TL Inspector settings: {exc}")
+
+    def _apply_tli_editor_settings(self):
+        game_root = self.folder_edit.text().strip()
+        if not game_root:
+            self._log("⚠  No game folder set. Complete Step 0 first.")
+            return
+        cfg = self._resolve_tli_config()
+        try:
+            from util.tl_inspector.config import save_config
+            from util.tl_inspector.installer import apply_config
+            save_config(cfg)
+            ok, msg = apply_config(Path(game_root), cfg)
+        except Exception as exc:
+            self._log(f"❌ Could not apply TL Inspector settings: {exc}")
+            return
+        self._log(("✅ " if ok else "❌ ") + msg)
 
     def _refresh_tl_inspector_status(self):
         """Update Step 8 status label from the current game folder."""
@@ -2510,9 +2742,12 @@ class WorkflowTab(QWidget):
         if not game_root:
             self._log("⚠  No game folder set. Complete Step 0 first.")
             return
+        cfg = self._resolve_tli_config()
         try:
+            from util.tl_inspector.config import save_config
             from util.tl_inspector.installer import install
-            ok, msg = install(Path(game_root))
+            save_config(cfg)
+            ok, msg = install(Path(game_root), cfg=cfg)
         except Exception as exc:
             self._log(f"❌ TL Inspector install failed: {exc}")
             return
diff --git a/util/tl_inspector/TLInspector.js b/util/tl_inspector/TLInspector.js
index 054a0f0..4ab93d3 100644
--- a/util/tl_inspector/TLInspector.js
+++ b/util/tl_inspector/TLInspector.js
@@ -902,11 +902,14 @@
                     cands.push(path.join(b, 'Programs', 'Microsoft VS Code', 'Code.exe'));
                     cands.push(path.join(b, 'Microsoft VS Code', 'Code.exe'));
                     cands.push(path.join(b, 'Programs', 'Microsoft VS Code Insiders', 'Code - Insiders.exe'));
+                    cands.push(path.join(b, 'Programs', 'cursor', 'Cursor.exe'));
+                    cands.push(path.join(b, 'cursor', 'Cursor.exe'));
                 });
             } else if (plat === 'darwin') {
                 cands.push('/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code');
+                cands.push('/Applications/Cursor.app/Contents/MacOS/Cursor');
             } else {
-                cands.push('/usr/bin/code', '/usr/share/code/bin/code', '/snap/bin/code');
+                cands.push('/usr/bin/code', '/usr/share/code/bin/code', '/snap/bin/code', '/usr/bin/cursor');
             }
             for (var i = 0; i < cands.length; i++) {
                 try { if (fs.existsSync(cands[i])) { _editorPath = cands[i]; log('editor found', _editorPath); return _editorPath; } }
diff --git a/util/tl_inspector/__init__.py b/util/tl_inspector/__init__.py
index 362c1e2..895b10b 100644
--- a/util/tl_inspector/__init__.py
+++ b/util/tl_inspector/__init__.py
@@ -1,5 +1,16 @@
 """TL Inspector install helpers for RPG Maker MV/MZ (Idea: Sakura · Plugin: Kao_SSS)."""
 
-from util.tl_inspector.installer import bundled_plugin_path, detect_engine, install, status, uninstall
+from util.tl_inspector.config import detect_editors, load_config, save_config
+from util.tl_inspector.installer import apply_config, bundled_plugin_path, detect_engine, install, status, uninstall
 
-__all__ = ["bundled_plugin_path", "detect_engine", "install", "status", "uninstall"]
+__all__ = [
+    "apply_config",
+    "bundled_plugin_path",
+    "detect_editors",
+    "detect_engine",
+    "install",
+    "load_config",
+    "save_config",
+    "status",
+    "uninstall",
+]
diff --git a/util/tl_inspector/config.py b/util/tl_inspector/config.py
new file mode 100644
index 0000000..6a8a244
--- /dev/null
+++ b/util/tl_inspector/config.py
@@ -0,0 +1,139 @@
+"""TL Inspector configuration — .env storage, editor detection, JS patching."""
+
+from __future__ import annotations
+
+import json
+import os
+import re
+import sys
+from pathlib import Path
+
+from dotenv import dotenv_values
+
+ENV_EDITOR = "tlEditorCmd"
+ENV_WORKSPACE = "tlWorkspaceFolder"
+
+CFG_KEYS = ("editorCmd", "workspaceFolder")
+
+DEFAULTS = {
+    "editorCmd": "auto",
+    "workspaceFolder": "auto",
+}
+
+_PKG_ROOT = Path(__file__).resolve().parent
+BUNDLED_PLUGIN = _PKG_ROOT / "TLInspector.js"
+ENV_PATH = Path(".env")
+
+
+def detect_editors() -> list[tuple[str, Path]]:
+    """Return installed code editors as (label, executable path) pairs."""
+    out: list[tuple[str, Path]] = []
+    seen: set[str] = set()
+
+    def add(label: str, path: Path) -> None:
+        key = str(path).lower()
+        if key in seen or not path.is_file():
+            return
+        seen.add(key)
+        out.append((label, path))
+
+    if sys.platform == "win32":
+        bases = [
+            os.environ.get("LOCALAPPDATA"),
+            os.environ.get("ProgramFiles"),
+            os.environ.get("ProgramFiles(x86)"),
+        ]
+        for raw in bases:
+            if not raw:
+                continue
+            base = Path(raw)
+            add("VS Code", base / "Programs" / "Microsoft VS Code" / "Code.exe")
+            add("VS Code", base / "Microsoft VS Code" / "Code.exe")
+            add(
+                "VS Code Insiders",
+                base / "Programs" / "Microsoft VS Code Insiders" / "Code - Insiders.exe",
+            )
+            add("Cursor", base / "Programs" / "cursor" / "Cursor.exe")
+            add("Cursor", base / "cursor" / "Cursor.exe")
+    elif sys.platform == "darwin":
+        add(
+            "VS Code",
+            Path("/Applications/Visual Studio Code.app/Contents/Resources/app/bin/code"),
+        )
+        add("Cursor", Path("/Applications/Cursor.app/Contents/MacOS/Cursor"))
+    else:
+        for path in (
+            Path("/usr/bin/code"),
+            Path("/usr/share/code/bin/code"),
+            Path("/snap/bin/code"),
+            Path("/usr/bin/cursor"),
+        ):
+            label = "Cursor" if "cursor" in path.name else "VS Code"
+            add(label, path)
+
+    return out
+
+
+def detect_primary_editor() -> Path | None:
+    editors = detect_editors()
+    return editors[0][1] if editors else None
+
+
+def load_config(env_path: Path | None = None) -> dict:
+    path = env_path or ENV_PATH
+    env = dotenv_values(path) if path.is_file() else {}
+    cfg = dict(DEFAULTS)
+    editor = (env.get(ENV_EDITOR) or "").strip()
+    workspace = (env.get(ENV_WORKSPACE) or "").strip()
+    if editor:
+        cfg["editorCmd"] = editor
+    if workspace:
+        cfg["workspaceFolder"] = workspace
+    return cfg
+
+
+def save_config(cfg: dict, env_path: Path | None = None) -> None:
+    path = env_path or ENV_PATH
+    text = path.read_text(encoding="utf-8") if path.is_file() else ""
+    updates = {
+        ENV_EDITOR: cfg.get("editorCmd", "auto"),
+        ENV_WORKSPACE: cfg.get("workspaceFolder", "auto"),
+    }
+    for key, val in updates.items():
+        quoted = f"'{val}'"
+        pattern = rf"^({re.escape(key)}\s*=\s*)(?:'[^']*'|\"[^\"]*\"|[^\n]*)"
+        text, n = re.subn(pattern, rf"\g<1>{quoted}", text, count=1, flags=re.MULTILINE)
+        if n == 0:
+            text = text.rstrip("\n") + f"\n{key}={quoted}\n"
+    if not path.exists():
+        path.touch()
+    path.write_text(text, encoding="utf-8")
+
+
+def _js_literal(value) -> str:
+    if value is None:
+        return "null"
+    if isinstance(value, bool):
+        return "true" if value else "false"
+    if isinstance(value, (int, float)):
+        return str(value)
+    return json.dumps(str(value))
+
+
+def patch_cfg_block(js: str, overrides: dict) -> str:
+    for key, val in overrides.items():
+        if key not in CFG_KEYS:
+            continue
+        lit = _js_literal(val)
+        pattern = rf"({re.escape(key)}:\s*)(?:'[^']*'|\"[^\"]*\"|true|false|null|\d+)"
+        js, count = re.subn(pattern, rf"\g<1>{lit}", js, count=1)
+        if count == 0:
+            raise ValueError(f"Could not patch CFG.{key} in TLInspector.js")
+    return js
+
+
+def prepare_plugin_js(source: Path | None = None, cfg: dict | None = None) -> str:
+    src = source or BUNDLED_PLUGIN
+    text = src.read_text(encoding="utf-8")
+    effective = {**DEFAULTS, **(cfg or load_config())}
+    return patch_cfg_block(text, effective)
diff --git a/util/tl_inspector/installer.py b/util/tl_inspector/installer.py
index b9116a7..a20607e 100644
--- a/util/tl_inspector/installer.py
+++ b/util/tl_inspector/installer.py
@@ -6,7 +6,6 @@ Credits: Idea by Sakura · Plugin by Kao_SSS
 from __future__ import annotations
 
 import re
-import shutil
 from pathlib import Path
 
 PLUGIN_NAME = "TLInspector"
@@ -80,8 +79,10 @@ def status(game_root: Path) -> dict:
     }
 
 
-def install(game_root: Path, source_js: Path | None = None) -> tuple[bool, str]:
+def install(game_root: Path, source_js: Path | None = None, cfg: dict | None = None) -> tuple[bool, str]:
     """Copy TLInspector.js into the game and declare it in plugins.js."""
+    from util.tl_inspector.config import load_config, prepare_plugin_js
+
     info = detect_engine(game_root)
     if info is None:
         return False, "No RPG Maker MV/MZ game found at that path."
@@ -95,7 +96,8 @@ def install(game_root: Path, source_js: Path | None = None) -> tuple[bool, str]:
     content, nl = _read_plugins_js(plugins_js)
 
     plugins_dir.mkdir(parents=True, exist_ok=True)
-    shutil.copy2(src, target)
+    effective_cfg = cfg if cfg is not None else load_config()
+    target.write_text(prepare_plugin_js(src, effective_cfg), encoding="utf-8")
 
     if not _is_declared(content):
         idx = content.rfind("];")
@@ -133,3 +135,21 @@ def uninstall(game_root: Path) -> tuple[bool, str]:
         target.unlink()
 
     return True, "TLInspector uninstalled."
+
+
+def apply_config(game_root: Path, cfg: dict | None = None) -> tuple[bool, str]:
+    """Rewrite an installed TLInspector.js with current editor settings."""
+    from util.tl_inspector.config import load_config, prepare_plugin_js
+
+    info = detect_engine(game_root)
+    if info is None:
+        return False, "No RPG Maker MV/MZ game found at that path."
+
+    _, _, plugins_dir = info
+    target = plugins_dir / f"{PLUGIN_NAME}.js"
+    if not target.is_file():
+        return False, "TLInspector is not installed in this game folder."
+
+    effective_cfg = cfg if cfg is not None else load_config()
+    target.write_text(prepare_plugin_js(DEFAULT_PLUGIN_SRC, effective_cfg), encoding="utf-8")
+    return True, "TL Inspector editor settings applied to the installed plugin."