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>

tests/test_wrapper_components.py

@@ -0,0 +1,82 @@
+"""Tests for wrapper component pattern to reduce repetition."""
+
+import pytest
+from ritz.parser import parse_component
+from ritz.llvm_codegen_signals import generate_llvm_ir
+
+
+def test_tab_button_wrapper_component():
+    """Test wrapper component pattern for reducing tab button repetition."""
+    source = """
+from ritz.syntax import *
+
+@component
+def TabButton(label, index, active, onclick):
+    \"\"\"Wrapper component for tab buttons with active state.\"\"\"
+    if active:
+        with Button(class_="tab active", onclick=onclick):
+            yield label
+    else:
+        with Button(class_="tab", onclick=onclick):
+            yield label
+
+@component
+def SimpleTabs():
+    tab_index = signal(0)
+
+    def set_tab(value):
+        tab_index = value
+
+    with Div(class_="tab-menu"):
+        yield TabButton("Home", 0, tab_index == 0, lambda: set_tab(0))
+        yield TabButton("Profile", 1, tab_index == 1, lambda: set_tab(1))
+        yield TabButton("Settings", 2, tab_index == 2, lambda: set_tab(2))
+"""
+    ir = parse_component(source)
+
+    # Should parse both components
+    assert isinstance(ir, list)
+    assert len(ir) == 2
+    assert ir[0]["name"] == "TabButton"
+    assert ir[1]["name"] == "SimpleTabs"
+
+    # TabButton should have parameters
+    assert len(ir[0]["params"]) == 4
+    assert ir[0]["params"][0]["name"] == "label"
+    assert ir[0]["params"][1]["name"] == "index"
+    assert ir[0]["params"][2]["name"] == "active"
+    assert ir[0]["params"][3]["name"] == "onclick"
+
+
+def test_tab_button_wrapper_codegen():
+    """Test LLVM codegen for wrapper component pattern."""
+    source = """
+from ritz.syntax import *
+
+@component
+def TabButton(label, active, onclick):
+    if active:
+        with Button(class_="tab active", onclick=onclick):
+            yield label
+    else:
+        with Button(class_="tab", onclick=onclick):
+            yield label
+
+@component
+def SimpleTabs():
+    tab_index = signal(0)
+
+    def set_tab(value):
+        tab_index = value
+
+    with Div():
+        yield TabButton("Home", tab_index == 0, lambda: set_tab(0))
+"""
+    ir = parse_component(source)
+    llvm_ir = generate_llvm_ir(ir)
+
+    # Should generate render function for TabButton with parameters
+    assert "define void @render_TabButton(" in llvm_ir
+
+    # Should call TabButton from SimpleTabs with arguments
+    assert "call void @render_TabButton(" in llvm_ir