server.py(refactor): Remove pre-3.2 version guards

why: tmux >= 3.2a is now required, these version checks are unnecessary
what:
- Remove has_gte_version("2.1") check in has_session() - always prepend = for exact match
- Remove has_gte_version("3.2") check in new_session() - always pass -e environment flags
- Remove has_gte_version import (no longer used)

Author: tony

src/libtmux/server.py

@@ -28,7 +28,6 @@
     PaneDict,
     SessionDict,
     WindowDict,
-    has_gte_version,
     session_check_name,
 )
 
@@ -337,7 +336,7 @@ def has_session(self, target_session: str, exact: bool = True) -> bool:
         """
         session_check_name(target_session)
 
-        if exact and has_gte_version("2.1"):
+        if exact:
             target_session = f"={target_session}"
 
         proc = self.cmd("has-session", target=target_session)
@@ -555,13 +554,8 @@ def new_session(
             tmux_args += ("-y", y)
 
         if environment:
-            if has_gte_version("3.2"):
-                for k, v in environment.items():
-                    tmux_args += (f"-e{k}={v}",)
-            else:
-                logger.warning(
-                    "Environment flag ignored, tmux 3.2 or newer required.",
-                )
+            for k, v in environment.items():
+                tmux_args += (f"-e{k}={v}",)
 
         if window_command:
             tmux_args += (window_command,)