Add interactive physics controls

src/py_dvt_ate/app/dashboard/app.py

@@ -118,6 +118,81 @@ def display_current_state() -> None:
         st.metric("Sim Time", f"{engine.simulation_time:.2f} s")
 
 
+def display_controls() -> None:
+    """Display simulation control panel in sidebar."""
+    engine: PhysicsEngine = st.session_state.engine
+
+    st.sidebar.header("Simulation Controls")
+
+    # Start/Stop button
+    if st.session_state.running:
+        if st.sidebar.button("Stop Simulation", type="primary", use_container_width=True):
+            st.session_state.running = False
+            st.rerun()
+    else:
+        if st.sidebar.button(
+            "Start Simulation", type="primary", use_container_width=True
+        ):
+            st.session_state.running = True
+            st.rerun()
+
+    # Reset button
+    if st.sidebar.button("Reset", use_container_width=True):
+        st.session_state.engine = PhysicsEngine(update_rate_hz=100.0)
+        st.session_state.history = SimulationHistory()
+        st.session_state.running = False
+        st.rerun()
+
+    st.sidebar.divider()
+
+    # Temperature setpoint
+    st.sidebar.subheader("Thermal Chamber")
+    temp_setpoint = st.sidebar.slider(
+        "Temperature Setpoint (°C)",
+        min_value=-40.0,
+        max_value=125.0,
+        value=25.0,
+        step=5.0,
+        key="temp_setpoint",
+    )
+    engine.set_chamber_setpoint(temp_setpoint)
+
+    st.sidebar.divider()
+
+    # Power supply controls
+    st.sidebar.subheader("Power Supply")
+    input_voltage = st.sidebar.slider(
+        "Input Voltage (V)",
+        min_value=0.0,
+        max_value=12.0,
+        value=5.0,
+        step=0.1,
+        key="input_voltage",
+    )
+    engine.set_input_voltage(input_voltage)
+
+    output_enabled = st.sidebar.toggle(
+        "Output Enabled",
+        value=engine.is_output_enabled,
+        key="output_enabled",
+    )
+    engine.set_output_enabled(output_enabled)
+
+    st.sidebar.divider()
+
+    # Load controls
+    st.sidebar.subheader("Electronic Load")
+    load_current_ma = st.sidebar.slider(
+        "Load Current (mA)",
+        min_value=0.0,
+        max_value=500.0,
+        value=100.0,
+        step=10.0,
+        key="load_current",
+    )
+    engine.set_load_current(load_current_ma / 1000.0)
+
+
 def main() -> None:
     """Main entry point for the Streamlit dashboard."""
     st.set_page_config(
@@ -136,6 +211,9 @@ def main() -> None:
 
     init_session_state()
 
+    # Sidebar controls
+    display_controls()
+
     # Current state display
     st.subheader("Current State")
     display_current_state()