Fix lambda event handlers & add ternary expression support

Fixes:
- Lambda functions now correctly pass arguments to handlers
- Function parameters properly emitted in LLVM IR
- Event handlers defined with parameter lists

New feature - Ternary expressions:
- Support Python ternary syntax (x if cond else y) in props
- Eliminates repetitive if/else blocks for active states
- Before: 6 lines per tab button
- After: 1 line with ternary expression

Example:
  class_='tab active' if active else 'tab'

All tests passing (51 passed, 2 skipped)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

examples/tabs/TabsTernary.py

@@ -0,0 +1,126 @@
+"""
+Clean Tabs implementation using ternary expressions to eliminate repetition.
+
+Before: 6 lines per tab button (if/else blocks)
+After: 1 line per tab button (ternary expressions)
+"""
+
+from ritz.syntax import *
+
+
+@component
+def VerticalTabs():
+    """Vertical tabs for settings categories."""
+    setting_tab = signal(0)
+
+    def set_setting(value):
+        setting_tab = value
+
+    with Div(class_="vertical-tabs"):
+        # Vertical tab menu - now just 3 lines instead of 18!
+        with Div(class_="vertical-tab-menu"):
+            with Button(class_='vertical-tab active' if setting_tab == 0 else 'vertical-tab', onclick=lambda: set_setting(0)):
+                yield "⚙️ General"
+
+            with Button(class_='vertical-tab active' if setting_tab == 1 else 'vertical-tab', onclick=lambda: set_setting(1)):
+                yield "🔒 Privacy"
+
+            with Button(class_='vertical-tab active' if setting_tab == 2 else 'vertical-tab', onclick=lambda: set_setting(2)):
+                yield "🚀 Advanced"
+
+        # Tab content (same as before)
+        with Div(class_="vertical-tab-content"):
+            match setting_tab:
+                case 0:
+                    with Div(class_="setting-pane"):
+                        with H3():
+                            yield "⚙️ General Settings"
+                        with P():
+                            yield "Language: English"
+                        with P():
+                            yield "Time Zone: UTC"
+
+                case 1:
+                    with Div(class_="setting-pane"):
+                        with H3():
+                            yield "🔒 Privacy Settings"
+                        with P():
+                            yield "Data Collection: Disabled"
+                        with P():
+                            yield "Analytics: Opt-out"
+
+                case 2:
+                    with Div(class_="setting-pane"):
+                        with H3():
+                            yield "🚀 Advanced Settings"
+                        with P():
+                            yield "Debug Mode: Off"
+                        with P():
+                            yield "Experimental Features: Disabled"
+
+                case _:
+                    with Div(class_="setting-pane"):
+                        with P():
+                            yield "Invalid setting"
+
+
+@component
+def Tabs():
+    """Main tabs container with ternary expressions for clean tab buttons."""
+    tab_index = signal(0)
+
+    def set_tab(value):
+        tab_index = value
+
+    with Div(class_="tabs-container"):
+        with H1():
+            yield "Tab Component Demo"
+
+        with P(class_="subtitle"):
+            yield "Beautiful composition with ternary expressions"
+
+        # Tab menu - clean one-line buttons!
+        with Ul(class_="tab-menu"):
+            with Li(class_='tab active' if tab_index == 0 else 'tab'):
+                with Button(onclick=lambda: set_tab(0)):
+                    yield "🏠 Home"
+
+            with Li(class_='tab active' if tab_index == 1 else 'tab'):
+                with Button(onclick=lambda: set_tab(1)):
+                    yield "👤 Profile"
+
+            with Li(class_='tab active' if tab_index == 2 else 'tab'):
+                with Button(onclick=lambda: set_tab(2)):
+                    yield "⚙️ Settings"
+
+        # Tab panes
+        with Div(class_="tab-content"):
+            match tab_index:
+                case 0:
+                    with Div(class_="tab-pane home"):
+                        with H2():
+                            yield "🏠 Welcome Home"
+                        with P():
+                            yield "This is your home dashboard."
+
+                case 1:
+                    with Div(class_="tab-pane profile"):
+                        with H2():
+                            yield "👤 Your Profile"
+                        with P():
+                            yield "Manage your account settings."
+
+                case 2:
+                    with Div(class_="tab-pane settings"):
+                        with H2():
+                            yield "⚙️ Settings"
+                        with P():
+                            yield "Configure your preferences using the categories below:"
+
+                        # Nested vertical tabs!
+                        yield VerticalTabs()
+
+                case _:
+                    with Div(class_="tab-pane error"):
+                        with P():
+                            yield "⚠️ Invalid tab selected"