feat(cli): restore cwd on resume (--no-restore-cwd)

Resuming a session cd's back into its recorded working directory, so it resumes
in the repo it belonged to. `--no-restore-cwd` opts out; skipped under
--worktree (that path owns its dir); best-effort — a missing dir warns and stays
put rather than failing the resume.

Co-authored-by: Cary Palmer <palmer@dugoutfantasy.com>

hermes_cli/_parser.py

@@ -160,6 +160,12 @@ def build_top_level_parser():
         default=None,
         help="Resume a previous session by ID or title",
     )
+    parser.add_argument(
+        "--no-restore-cwd",
+        action="store_true",
+        default=False,
+        help="Don't cd into a resumed session's recorded working directory.",
+    )
     parser.add_argument(
         "--continue",
         "-c",
@@ -331,6 +337,12 @@ def build_top_level_parser():
         default=argparse.SUPPRESS,
         help="Resume a previous session by ID (shown on exit)",
     )
+    chat_parser.add_argument(
+        "--no-restore-cwd",
+        action="store_true",
+        default=argparse.SUPPRESS,
+        help="Don't cd into a resumed session's recorded working directory.",
+    )
     chat_parser.add_argument(
         "--continue",
         "-c",

hermes_cli/main.py

@@ -2286,6 +2286,27 @@ def cmd_chat(args):
         # If resolution fails, keep the original value — _init_agent will
         # report "Session not found" with the original input
 
+    # Session<->workspace binding: cd back into a resumed session's recorded cwd
+    # so it resumes in the repo it belonged to. Opt out with --no-restore-cwd;
+    # skipped under --worktree (that path owns its own dir). Best-effort — a
+    # missing dir warns and stays put rather than failing the resume.
+    if (
+        getattr(args, "resume", None)
+        and not getattr(args, "no_restore_cwd", False)
+        and not getattr(args, "worktree", False)
+    ):
+        try:
+            from hermes_state import SessionDB
+
+            _saved_cwd = ((SessionDB().get_session(args.resume) or {}).get("cwd") or "").strip()
+            if _saved_cwd and not os.path.isdir(_saved_cwd):
+                print(f"⚠ session's recorded dir is gone ({_saved_cwd}); staying in {os.getcwd()}")
+            elif _saved_cwd and os.path.realpath(_saved_cwd) != os.path.realpath(os.getcwd()):
+                os.chdir(_saved_cwd)
+                print(f"↪ restored workspace dir: {_saved_cwd}")
+        except Exception:
+            pass  # never let cwd-restore break a resume
+
     # xAI retirement warning — one-shot, non-blocking, never fails startup
     try:
         from hermes_cli.xai_retirement import (