fix: help box toggles with ?, add emoji gutter signs with colors

lua/tiny-debugger/breakpoints.lua

@@ -12,6 +12,21 @@ function M.setup()
     load_breakpoints_event = { "BufReadPost" },
   })
 
+  -- sign highlights
+  vim.api.nvim_set_hl(0, "DapBreakpoint", { fg = "#e06c75" })
+  vim.api.nvim_set_hl(0, "DapBreakpointCondition", { fg = "#e5c07b" })
+  vim.api.nvim_set_hl(0, "DapBreakpointRejected", { fg = "#5c6370" })
+  vim.api.nvim_set_hl(0, "DapStopped", { fg = "#98c379" })
+  vim.api.nvim_set_hl(0, "DapStoppedLine", { bg = "#2e3b2e" })
+  vim.api.nvim_set_hl(0, "DapLogPoint", { fg = "#61afef" })
+
+  -- gutter signs
+  vim.fn.sign_define("DapBreakpoint", { text = "🔴", texthl = "DapBreakpoint" })
+  vim.fn.sign_define("DapBreakpointCondition", { text = "🟡", texthl = "DapBreakpointCondition" })
+  vim.fn.sign_define("DapBreakpointRejected", { text = "⭕", texthl = "DapBreakpointRejected" })
+  vim.fn.sign_define("DapStopped", { text = "▶️", texthl = "DapStopped", linehl = "DapStoppedLine" })
+  vim.fn.sign_define("DapLogPoint", { text = "📝", texthl = "DapLogPoint" })
+
   -- global mappings — these work outside debug mode
   local keys = config.opts.keys
   if keys.breakpoint then

lua/tiny-debugger/mode.lua

@@ -58,7 +58,13 @@ local function setup_default_actions()
     M.exit()
   end
   actions.restart = function() dap.restart() end
-  actions.help = function() help.open() end
+  actions.help = function()
+    if help.is_open() then
+      help.close()
+    else
+      help.open()
+    end
+  end
 
   actions.watch = function()
     local expr