cmd/git(fix): Forward **kwargs in remaining Manager/Cmd run() methods

why: Multiple run() methods accepted **kwargs in their signatures but
did not forward them to self.cmd.run(), silently ignoring parameters
like env, cwd, or custom config.
what:
- Add **kwargs forwarding to GitSubmoduleCmd.run()
- Add **kwargs forwarding to GitStashEntryCmd.run()
- Add **kwargs forwarding to GitStashManager.run()
- Add **kwargs forwarding to GitTagCmd.run()
- Add **kwargs forwarding to GitTagManager.run()
- Add **kwargs forwarding to GitWorktreeCmd.run()
- Add **kwargs forwarding to GitWorktreeManager.run()

Author: tony

src/libvcs/cmd/git.py

@@ -2452,6 +2452,7 @@ def run(
             ["submodule", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def init(
@@ -4555,6 +4556,7 @@ def run(
             ["stash", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def show(
@@ -5077,6 +5079,7 @@ def run(
             ["stash", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def push(
@@ -5943,6 +5946,7 @@ def run(
             ["tag", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def delete(
@@ -6123,6 +6127,7 @@ def run(
             ["tag", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def create(
@@ -6460,6 +6465,7 @@ def run(
             ["worktree", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def remove(
@@ -6697,6 +6703,7 @@ def run(
             ["worktree", *local_flags],
             check_returncode=check_returncode,
             log_in_real_time=log_in_real_time,
+            **kwargs,
         )
 
     def add(