feat: redesign diff view with horizontal layout and new tab options

Change-Id: Ia8df210bad3a05b7eddd92fafbbb4f8aa90e2704
Signed-off-by: Thomas Kosiewski <[email protected]>

Author: ThomasK33

dev-config.lua

@@ -40,29 +40,28 @@ return {
   },
 
   -- Development configuration - all options shown with defaults commented out
+  ---@type ClaudeCodeConfig
   opts = {
     -- Server Configuration
-    -- port_range = { min = 10000, max = 65535 },  -- WebSocket server port range
-    -- auto_start = true,                          -- Auto-start server on Neovim startup
-    -- log_level = "info",                         -- "trace", "debug", "info", "warn", "error"
-    -- terminal_cmd = nil,                         -- Custom terminal command (default: "claude")
+    -- port_range = { min = 10000, max = 65535 }, -- WebSocket server port range
+    -- auto_start = true, -- Auto-start server on Neovim startup
+    -- log_level = "info", -- "trace", "debug", "info", "warn", "error"
+    -- terminal_cmd = nil, -- Custom terminal command (default: "claude")
 
     -- Selection Tracking
-    -- track_selection = true,                     -- Enable real-time selection tracking
-    -- visual_demotion_delay_ms = 50,             -- Delay before demoting visual selection (ms)
+    -- track_selection = true, -- Enable real-time selection tracking
+    -- visual_demotion_delay_ms = 50, -- Delay before demoting visual selection (ms)
 
     -- Connection Management
-    -- connection_wait_delay = 200,                -- Wait time after connection before sending queued @ mentions (ms)
-    -- connection_timeout = 10000,                 -- Max time to wait for Claude Code connection (ms)
-    -- queue_timeout = 5000,                       -- Max time to keep @ mentions in queue (ms)
+    -- connection_wait_delay = 200, -- Wait time after connection before sending queued @ mentions (ms)
+    -- connection_timeout = 10000, -- Max time to wait for Claude Code connection (ms)
+    -- queue_timeout = 5000, -- Max time to keep @ mentions in queue (ms)
 
     -- Diff Integration
     -- diff_opts = {
-    --   auto_close_on_accept = true,              -- Close diff view after accepting changes
-    --   show_diff_stats = true,                   -- Show diff statistics
-    --   vertical_split = true,                    -- Use vertical split for diffs
-    --   open_in_current_tab = true,               -- Open diffs in current tab vs new tab
-    --   keep_terminal_focus = false,              -- If true, moves focus back to terminal after diff opens
+    --   layout = "horizontal", -- "vertical" or "horizontal" diff layout
+    --   open_in_new_tab = true, -- Open diff in a new tab (false = use current tab)
+    --   keep_terminal_focus = false, -- Keep focus in terminal after opening diff
     -- },
 
     -- Terminal Configuration

lua/claudecode/config.lua

@@ -19,10 +19,8 @@ M.defaults = {
   connection_timeout = 10000, -- Maximum time to wait for Claude Code to connect (milliseconds)
   queue_timeout = 5000, -- Maximum time to keep @ mentions in queue (milliseconds)
   diff_opts = {
-    auto_close_on_accept = true,
-    show_diff_stats = true,
-    vertical_split = true,
-    open_in_current_tab = true, -- Use current tab instead of creating new tab
+    layout = "vertical",
+    open_in_new_tab = false, -- Open diff in a new tab (false = use current tab)
     keep_terminal_focus = false, -- If true, moves focus back to terminal after diff opens
   },
   models = {
@@ -82,10 +80,11 @@ function M.validate(config)
   assert(type(config.queue_timeout) == "number" and config.queue_timeout > 0, "queue_timeout must be a positive number")
 
   assert(type(config.diff_opts) == "table", "diff_opts must be a table")
-  assert(type(config.diff_opts.auto_close_on_accept) == "boolean", "diff_opts.auto_close_on_accept must be a boolean")
-  assert(type(config.diff_opts.show_diff_stats) == "boolean", "diff_opts.show_diff_stats must be a boolean")
-  assert(type(config.diff_opts.vertical_split) == "boolean", "diff_opts.vertical_split must be a boolean")
-  assert(type(config.diff_opts.open_in_current_tab) == "boolean", "diff_opts.open_in_current_tab must be a boolean")
+  assert(
+    config.diff_opts.layout == "vertical" or config.diff_opts.layout == "horizontal",
+    "diff_opts.layout must be 'vertical' or 'horizontal'"
+  )
+  assert(type(config.diff_opts.open_in_new_tab) == "boolean", "diff_opts.open_in_new_tab must be a boolean")
   assert(type(config.diff_opts.keep_terminal_focus) == "boolean", "diff_opts.keep_terminal_focus must be a boolean")
 
   -- Validate env