mcp(fix[docs]): Use %1 not %%1 for pane ID examples in docstrings

why: `%%1` in plain Python strings is literally two percent signs, not
an escaped `%1`. These docstrings become MCP tool descriptions shown to
AI agents, which would send `%%1` as the pane_id and fail lookups since
tmux pane IDs use a single `%` prefix (`%0`, `%1`, etc.).
what:
- Replace all 11 instances of `%%1` with `%1` across server.py,
  _utils.py, pane_tools.py, and hierarchy.py

Author: tony

src/libtmux/mcp/_utils.py

@@ -228,7 +228,7 @@ def _resolve_pane(
     server : Server
         The tmux server.
     pane_id : str, optional
-        Pane ID (e.g. '%%1'). Globally unique within a server.
+        Pane ID (e.g. '%1'). Globally unique within a server.
     session_name : str, optional
         Session name for hierarchical resolution.
     session_id : str, optional

src/libtmux/mcp/resources/hierarchy.py

@@ -117,7 +117,7 @@ def get_pane(pane_id: str) -> str:
         Parameters
         ----------
         pane_id : str
-            The pane ID (e.g. '%%1').
+            The pane ID (e.g. '%1').
 
         Returns
         -------
@@ -139,7 +139,7 @@ def get_pane_content(pane_id: str) -> str:
         Parameters
         ----------
         pane_id : str
-            The pane ID (e.g. '%%1').
+            The pane ID (e.g. '%1').
 
         Returns
         -------

src/libtmux/mcp/server.py

@@ -11,7 +11,7 @@
     name="libtmux",
     instructions=(
         "libtmux MCP server for programmatic tmux control. "
-        "Use pane_id (e.g. '%%1') as the preferred targeting method - "
+        "Use pane_id (e.g. '%1') as the preferred targeting method - "
         "it is globally unique within a tmux server. "
         "Use send_keys to execute commands and capture_pane to read output. "
         "All tools accept an optional socket_name parameter for multi-server support."

src/libtmux/mcp/tools/pane_tools.py

@@ -34,7 +34,7 @@ def send_keys(
     keys : str
         The keys or text to send.
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -83,7 +83,7 @@ def capture_pane(
     Parameters
     ----------
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -126,7 +126,7 @@ def resize_pane(
     Parameters
     ----------
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -183,7 +183,7 @@ def kill_pane(
     Parameters
     ----------
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -223,7 +223,7 @@ def set_pane_title(
     title : str
         The new pane title.
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -259,7 +259,7 @@ def get_pane_info(
     Parameters
     ----------
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional
@@ -294,7 +294,7 @@ def clear_pane(
     Parameters
     ----------
     pane_id : str, optional
-        Pane ID (e.g. '%%1').
+        Pane ID (e.g. '%1').
     session_name : str, optional
         Session name for pane resolution.
     window_id : str, optional