fix: resolve pylint and pyright linting issues

- Remove .keys() iteration in favor of direct dictionary iteration
- Remove redundant os module reimport in tui.py
- Disable unnecessary-ellipsis rule in pylintrc to avoid conflict with pyright's
  Protocol type requirements

pyright: 0 errors
pylint: 9.93/10

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

.pylintrc

@@ -419,7 +419,8 @@ disable=raw-checker-failed,
         too-many-instance-attributes,
         duplicate-code,
         import-outside-toplevel,
-        too-few-public-methods
+        too-few-public-methods,
+        unnecessary-ellipsis
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option

bot_bottle/cli/tui.py

@@ -42,8 +42,7 @@ def filter_select(
         # Use os.dup() to duplicate the fd so the original file object
         # and FileIO in _run_picker each manage independent copies,
         # preventing double-close errors.
-        import os as _os
-        fd_dup = _os.dup(tty_fd.fileno())
+        fd_dup = os.dup(tty_fd.fileno())
         return _run_picker(items, title=title, tty_fd=fd_dup)
     finally:
         tty_fd.close()

bot_bottle/manifest_agent.py

@@ -161,7 +161,7 @@ class Agent:
         git_raw = d.get("git-gate")
         if git_raw is not None:
             gd = as_json_object(git_raw, f"agent '{name}' git-gate")
-            for k in gd.keys():
+            for k in gd:
                 if k != "user":
                     raise ManifestError(
                         f"agent '{name}' git-gate.{k} is not allowed at the "

bot_bottle/manifest_git.py

@@ -246,7 +246,7 @@ class GitUser:
     @classmethod
     def from_dict(cls, bottle_name: str, raw: object) -> "GitUser":
         d = as_json_object(raw, f"bottle '{bottle_name}' git-gate.user")
-        for k in d.keys():
+        for k in d:
             if k not in {"name", "email"}:
                 raise ManifestError(
                     f"bottle '{bottle_name}' git-gate.user has unknown key {k!r}; "
@@ -281,7 +281,7 @@ def parse_git_gate_config(
     raw: object,
 ) -> tuple[tuple[GitEntry, ...], GitUser]:
     d = as_json_object(raw, f"bottle '{bottle_name}' git-gate")
-    for k in d.keys():
+    for k in d:
         if k not in {"user", "repos"}:
             raise ManifestError(
                 f"bottle '{bottle_name}' git-gate has unknown key {k!r}; "