enhance wezterm: add intelligent development layout with Claude integration

- Create 3-pane layout automatically: editor (main), terminal (bottom 30%), Claude sidebar (left 25%)
- Implement smart focus management between editor and terminal panes
- Add zoom toggling for distraction-free editing sessions
- Launch Claude Code automatically in dedicated sidebar pane

flake.lock

@@ -760,11 +760,11 @@
         "nixvim": "nixvim_2"
       },
       "locked": {
-        "lastModified": 1758995705,
-        "narHash": "sha256-ix/VUpm2MIAr16yMmUeB/B8tdv7ximran6zZa1OlZvg=",
+        "lastModified": 1759120734,
+        "narHash": "sha256-BCor67IctwZ09Bx7QuEXY5effIUqk8lVNqDhrRmLM4s=",
         "ref": "refs/heads/master",
-        "rev": "939e8a45f5f9c3ab32f071a559bca6eceead0d53",
-        "revCount": 104,
+        "rev": "620bad601117de9f9d123d2772b7d421114d4af1",
+        "revCount": 105,
         "type": "git",
         "url": "https://git.sajenim.dev/jasmine/nixvim-config.git"
       },

home-manager/sajenim/features/desktop/wezterm/wezterm.lua

@@ -124,34 +124,47 @@ config.keys = {
 	--
 
 	{ -- Split pane vertically
-		key = "v",
+		key = "s",
 		mods = "LEADER",
 		action = wezterm.action.SplitVertical({ domain = "CurrentPaneDomain" }),
 	},
 
 	{ -- Split pane horizontally
-		key = "s",
+		key = "v",
 		mods = "LEADER",
 		action = wezterm.action.SplitHorizontal({ domain = "CurrentPaneDomain" }),
 	},
 
-  { -- If there is only one pane, split it vertically, otherwise toggle zoom on the first pane.
+  { -- Dynamic pane management: Creates development layout or toggles focus between editor and terminal
     key = "`",
     mods = "LEADER",
     action = wezterm.action_callback(function(_, pane)
       local tab = pane:tab()
       local panes = tab:panes_with_info()
+
+      -- Case 1: Single pane - Create a 3-pane development layout
       if #panes == 1 then
+        -- First split: Create bottom terminal pane (30% height)
         pane:split({
           direction = "Bottom",
-          size = 0.3,
+          size = 0.30,
         })
-      elseif not panes[1].is_zoomed then
-        panes[1].pane:activate()
-        tab:set_zoomed(true)
-      elseif panes[1].is_zoomed then
-        tab:set_zoomed(false)
-        panes[2].pane:activate()
+        -- Second split: Create left sidebar for Claude Code (25% width)
+        pane:split({
+          direction = "Left",
+          size = 0.25,
+          args = { "claude" }  -- Launch Claude Code in the sidebar
+        })
+
+      -- Case 2: Multiple panes exist, pane 2 (editor) is not zoomed - Focus and zoom editor
+      elseif not panes[2].is_zoomed then
+        panes[2].pane:activate()  -- Switch to editor pane (typically Neovim)
+        tab:set_zoomed(true)      -- Zoom to hide other panes for focused editing
+
+      -- Case 3: Pane 2 (editor) is currently zoomed - Unzoom and return to terminal
+      elseif panes[2].is_zoomed then
+        tab:set_zoomed(false)     -- Restore multi-pane layout
+        panes[3].pane:activate()  -- Focus the terminal pane for quick commands
       end
     end),
   },