[Release] v1.6.0 (#501)

Bump RubyUI to 1.6.0 (minor: new component + new component options since v1.5.0).

- gem/lib/ruby_ui.rb → 1.6.0; regenerate gem/ and docs/ Gemfile.lock
- docs home hero badge → headline features (InputOtp, Combobox placement)
- rebuild mcp/data/registry.json

Highlights since v1.5.0:
- New component: InputOtp (#456)
- Combobox: configurable popover placement (#480), CheckboxGroup reuse for required ComboboxCheckbox (#479)
- DataTable: custom label + initial column visibility in DataTableColumnToggle (#466)
- Popover: data-state/data-side, clear closeTimeout on disconnect, close on Escape (#495)
- Accordion: no longer clips content that grows after opening (#500, #490)
- Toast: toaster state initialized in initialize() so server-rendered toasts don't throw (#499)
- Docs: Stimulus controllers symlinked to gem source, no more hand-copied drift (#493)

Author: djalmaaraujo

docs/Gemfile.lock

@@ -15,7 +15,7 @@ GIT
 PATH
   remote: ../gem
   specs:
-    ruby_ui (1.5.0)
+    ruby_ui (1.6.0)
 
 PATH
   remote: ../mcp

docs/app/views/pages/home.rb

@@ -7,7 +7,7 @@ def view_template
       div(class: "container flex max-w-[64rem] flex-col items-center gap-4 text-center mx-auto") do
         Link(href: docs_changelog_path, variant: :outline, class: "rounded-2xl px-4 py-1.5 text-sm font-medium") do
           span(class: "sm:hidden") { "New components available" }
-          span(class: "hidden sm:inline") { "New Bubble, Message, Empty components, and more" }
+          span(class: "hidden sm:inline") { "New InputOtp component, configurable Combobox placement, and more" }
           svg(xmlns: "http://www.w3.org/2000/svg", width: "24", height: "24", viewbox: "0 0 24 24", fill: "none", stroke: "currentColor", stroke_width: "2", stroke_linecap: "round", stroke_linejoin: "round", class: "ml-2 h-4 w-4") { |s|
             s.path(d: "M5 12h14")
             s.path(d: "m12 5 7 7-7 7")

gem/Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    ruby_ui (1.5.0)
+    ruby_ui (1.6.0)
 
 GEM
   remote: https://rubygems.org/

gem/lib/ruby_ui.rb

@@ -3,5 +3,5 @@
 require "date"
 
 module RubyUI
-  VERSION = "1.5.0"
+  VERSION = "1.6.0"
 end

mcp/data/registry.json

@@ -1,5 +1,5 @@
 {
-  "version": "1.5.0",
+  "version": "1.6.0",
   "components": {
     "accordion": {
       "name": "Accordion",