diff --git a/contributors/emails/alvaro.sanchez-mariscal@oracle.com b/contributors/emails/alvaro.sanchez-mariscal@oracle.com
new file mode 100644
index 000000000000..c8f03aec4612
--- /dev/null
+++ b/contributors/emails/alvaro.sanchez-mariscal@oracle.com
@@ -0,0 +1,2 @@
+alvarosanchez
+# PR #44797 salvage (dashboard TUI Python environment parity)
diff --git a/hermes_cli/main.py b/hermes_cli/main.py
index dbabf547f26d..1525041c111a 100644
--- a/hermes_cli/main.py
+++ b/hermes_cli/main.py
@@ -2003,6 +2003,39 @@ def _resolve_tui_heap_mb(default_mb: int = 8192) -> int:
     return max(1536, sized) if limit_mb > 2048 else sized
 
 
+def _safe_tui_cwd(env: Optional[dict] = None) -> str:
+    """Return a stable cwd value for the Node TUI child environment."""
+    try:
+        return os.getcwd()
+    except FileNotFoundError:
+        candidate = ((env or {}).get("PWD") or os.environ.get("PWD") or "").strip()
+        if candidate and Path(candidate).is_dir():
+            return candidate
+        return str(PROJECT_ROOT)
+
+
+def _apply_tui_python_env(env: dict) -> None:
+    """Seed/repair Python-related env vars shared by CLI and dashboard TUI launches."""
+    src_root = str(env.get("HERMES_PYTHON_SRC_ROOT") or "").strip()
+    if not src_root or not Path(src_root).is_dir():
+        env["HERMES_PYTHON_SRC_ROOT"] = str(PROJECT_ROOT)
+
+    cwd = str(env.get("HERMES_CWD") or "").strip()
+    if not cwd or not Path(cwd).is_dir():
+        env["HERMES_CWD"] = _safe_tui_cwd(env)
+
+    python = str(env.get("HERMES_PYTHON") or "").strip()
+    if os.path.dirname(python):
+        python_path = Path(python)
+        if not python_path.is_absolute():
+            python_path = Path(env["HERMES_CWD"]) / python_path
+        python_is_executable = python_path.is_file() and os.access(python_path, os.X_OK)
+    else:
+        python_is_executable = bool(shutil.which(python, path=env.get("PATH")))
+    if not python_is_executable:
+        env["HERMES_PYTHON"] = sys.executable
+
+
 def _launch_tui(
     resume_session_id: Optional[str] = None,
     tui_dev: bool = False,
@@ -2036,11 +2069,6 @@ def _launch_tui(
     )
     os.close(active_session_fd)
     env["HERMES_TUI_ACTIVE_SESSION_FILE"] = active_session_file
-    env["HERMES_PYTHON_SRC_ROOT"] = os.environ.get(
-        "HERMES_PYTHON_SRC_ROOT", str(PROJECT_ROOT)
-    )
-    env.setdefault("HERMES_PYTHON", sys.executable)
-    env.setdefault("HERMES_CWD", os.getcwd())
     env.setdefault("NODE_ENV", "development" if tui_dev else "production")
 
     wt_info = None
@@ -2065,6 +2093,8 @@ def _launch_tui(
         env["HERMES_CWD"] = wt_info["path"]
         env["TERMINAL_CWD"] = wt_info["path"]
 
+    _apply_tui_python_env(env)
+
     if model:
         env["HERMES_MODEL"] = model
         env["HERMES_INFERENCE_MODEL"] = model
diff --git a/hermes_cli/web_server.py b/hermes_cli/web_server.py
index 8dee6cce9ec4..1ba9a0bd1112 100644
--- a/hermes_cli/web_server.py
+++ b/hermes_cli/web_server.py
@@ -15346,7 +15346,7 @@ def _resolve_chat_argv(
     dashboard's in-memory gateway runs under the dashboard's own profile,
     so a profile-scoped chat must spawn its own gateway subprocess.
     """
-    from hermes_cli.main import PROJECT_ROOT, _make_tui_argv
+    from hermes_cli.main import PROJECT_ROOT, _apply_tui_python_env, _make_tui_argv
 
     profile_dir: Optional[Path] = None
     requested = (profile or "").strip()
@@ -15360,6 +15360,7 @@ def _resolve_chat_argv(
         apply_terminal_config_to_env(env=env)
     except Exception:
         _log.debug("Failed to apply terminal config bridge for dashboard chat", exc_info=True)
+    _apply_tui_python_env(env)
     env.setdefault("NODE_ENV", "production")
     # Browser-embedded chat should prefer stable wheel-based scrollback over
     # native terminal mouse tracking. When mouse tracking is enabled, wheel
diff --git a/tests/hermes_cli/test_tui_resume_flow.py b/tests/hermes_cli/test_tui_resume_flow.py
index 7c83ff2a5029..87a1e61cd688 100644
--- a/tests/hermes_cli/test_tui_resume_flow.py
+++ b/tests/hermes_cli/test_tui_resume_flow.py
@@ -924,6 +924,44 @@ def test_launch_tui_exports_model_provider_and_toolsets(monkeypatch, main_mod):
     assert env["NODE_ENV"] == "production"
 
 
+def test_launch_tui_worktree_validates_relative_python_against_final_cwd(
+    monkeypatch, main_mod, tmp_path
+):
+    import cli as cli_mod
+
+    parent_cwd = tmp_path / "parent"
+    parent_cwd.mkdir()
+    worktree = tmp_path / "worktree"
+    relative_python = Path(".review-venv") / "bin" / Path(sys.executable).name
+    python_path = worktree / relative_python
+    python_path.parent.mkdir(parents=True)
+    os.link(sys.executable, python_path)
+    captured = {}
+
+    monkeypatch.setenv("HERMES_CWD", str(parent_cwd))
+    monkeypatch.setenv("HERMES_PYTHON", str(relative_python))
+    monkeypatch.setattr(cli_mod, "_git_repo_root", lambda: None)
+    monkeypatch.setattr(cli_mod, "_prune_stale_worktrees", lambda _repo: None)
+    monkeypatch.setattr(cli_mod, "_setup_worktree", lambda: {"path": str(worktree)})
+    monkeypatch.setattr(cli_mod, "_cleanup_worktree", lambda _info: None)
+    monkeypatch.setattr(
+        main_mod,
+        "_make_tui_argv",
+        lambda tui_dir, tui_dev: (["node", "dist/entry.js"], Path(".")),
+    )
+    monkeypatch.setattr(
+        main_mod.subprocess,
+        "call",
+        lambda argv, cwd=None, env=None: captured.update({"env": env}) or 1,
+    )
+
+    with pytest.raises(SystemExit):
+        main_mod._launch_tui(worktree=True)
+
+    assert captured["env"]["HERMES_CWD"] == str(worktree)
+    assert captured["env"]["HERMES_PYTHON"] == str(relative_python)
+
+
 def test_launch_tui_applies_terminal_backend_config(
     monkeypatch, main_mod, _isolate_hermes_home
 ):
diff --git a/tests/hermes_cli/test_web_server.py b/tests/hermes_cli/test_web_server.py
index 691d3796a25c..220fd3537ce9 100644
--- a/tests/hermes_cli/test_web_server.py
+++ b/tests/hermes_cli/test_web_server.py
@@ -7104,6 +7104,106 @@ class TestPtyWebSocket:
 
         assert env["COLORTERM"] == "24bit"
 
+    def test_resolve_chat_argv_sets_tui_python_environment(self, monkeypatch):
+        """Dashboard chat gives the Node TUI the same Python env as CLI launches."""
+        import hermes_cli.main as main_mod
+
+        monkeypatch.delenv("HERMES_PYTHON_SRC_ROOT", raising=False)
+        monkeypatch.delenv("HERMES_PYTHON", raising=False)
+        monkeypatch.delenv("HERMES_CWD", raising=False)
+        monkeypatch.setattr(
+            main_mod,
+            "_make_tui_argv",
+            lambda project_root, tui_dev=False: (["node", "dist/entry.js"], "/tmp/ui-tui"),
+        )
+
+        _argv, _cwd, env = self.ws_module._resolve_chat_argv()
+
+        assert env is not None
+        assert env["HERMES_PYTHON_SRC_ROOT"] == str(main_mod.PROJECT_ROOT)
+        assert env["HERMES_PYTHON"] == sys.executable
+        assert env["HERMES_CWD"] == os.getcwd()
+
+    def test_resolve_chat_argv_replaces_invalid_tui_python_environment(self, monkeypatch):
+        """Dashboard chat does not preserve unusable inherited TUI Python env."""
+        import hermes_cli.main as main_mod
+
+        monkeypatch.setenv("HERMES_PYTHON_SRC_ROOT", "/definitely/missing/hermes-src")
+        monkeypatch.setenv("HERMES_PYTHON", "/definitely/missing/python")
+        monkeypatch.setenv("HERMES_CWD", "/definitely/missing/cwd")
+        monkeypatch.setattr(
+            main_mod,
+            "_make_tui_argv",
+            lambda project_root, tui_dev=False: (["node", "dist/entry.js"], "/tmp/ui-tui"),
+        )
+
+        _argv, _cwd, env = self.ws_module._resolve_chat_argv()
+
+        assert env is not None
+        assert env["HERMES_PYTHON_SRC_ROOT"] == str(main_mod.PROJECT_ROOT)
+        assert env["HERMES_PYTHON"] == sys.executable
+        assert env["HERMES_CWD"] == os.getcwd()
+
+    def test_resolve_chat_argv_keeps_relative_python_under_tui_cwd(
+        self, monkeypatch, tmp_path
+    ):
+        """Relative Python paths are resolved from the TUI child's cwd."""
+        import hermes_cli.main as main_mod
+
+        relative_python = Path(".review-venv") / "bin" / Path(sys.executable).name
+        python_path = tmp_path / relative_python
+        python_path.parent.mkdir(parents=True)
+        os.link(sys.executable, python_path)
+        monkeypatch.setenv("HERMES_CWD", str(tmp_path))
+        monkeypatch.setenv("HERMES_PYTHON", str(relative_python))
+        monkeypatch.setattr(
+            main_mod,
+            "_make_tui_argv",
+            lambda project_root, tui_dev=False: (["node", "dist/entry.js"], "/tmp/ui-tui"),
+        )
+
+        _argv, _cwd, env = self.ws_module._resolve_chat_argv()
+
+        assert env is not None
+        assert env["HERMES_PYTHON"] == str(relative_python)
+
+    def test_tui_python_command_uses_child_path(self, tmp_path):
+        """Bare Python commands are resolved from the TUI child's PATH."""
+        import hermes_cli.main as main_mod
+
+        command = f"hermes-review-python{Path(sys.executable).suffix}"
+        bin_dir = tmp_path / "bin"
+        bin_dir.mkdir()
+        executable = bin_dir / command
+        os.link(sys.executable, executable)
+        env = {
+            "HERMES_CWD": str(tmp_path),
+            "HERMES_PYTHON": command,
+            "PATH": str(bin_dir),
+        }
+
+        main_mod._apply_tui_python_env(env)
+
+        assert env["HERMES_PYTHON"] == command
+
+    def test_resolve_chat_argv_falls_back_when_getcwd_is_missing(self, monkeypatch, tmp_path):
+        """Dashboard chat still starts if the service cwd was deleted."""
+        import hermes_cli.main as main_mod
+
+        monkeypatch.delenv("HERMES_CWD", raising=False)
+        monkeypatch.setenv("PWD", str(tmp_path))
+        monkeypatch.setattr(main_mod.os, "getcwd", lambda: (_ for _ in ()).throw(FileNotFoundError()))
+        monkeypatch.setattr(
+            main_mod,
+            "_make_tui_argv",
+            lambda project_root, tui_dev=False: (["node", "dist/entry.js"], "/tmp/ui-tui"),
+        )
+
+        _argv, _cwd, env = self.ws_module._resolve_chat_argv()
+
+        assert env is not None
+        assert env["HERMES_CWD"] == str(tmp_path)
+
     def test_resolve_chat_argv_applies_terminal_backend_config(
         self, monkeypatch, _isolate_hermes_home
     ):