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semiconductor-pipeline

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Sai Kumar Taraka commited on 2 days ago

Commit

a259d11

1 Parent(s): 882a0d4

fix: Simplify Dockerfile, add embedded UI to avoid npm build

- Simplify Dockerfile: remove multi-stage build, use single python:3.11-slim stage
- Add embedded HTML UI directly in server.py with Tailwind CDN
- UI includes: spec editor, examples, options, run button, results display
- Supports UART, SPI, I2C example specs
- Uses JSZip for download (CDN), Tailwind CSS (CDN)
- No npm build required - works out of the box
- Update README.md HF config to use port 7860

Files changed (2) hide show

Dockerfile +4 -18
src/api/server.py +585 -5

Dockerfile CHANGED Viewed

@@ -1,40 +1,26 @@
-# Multi-stage: frontend build + Python backend
-# Stage 1: Build React frontend
-FROM node:20-alpine AS frontend-builder
 WORKDIR /app
-COPY frontend/package.json frontend/package-lock.json ./
-RUN npm ci --omit=dev
-COPY frontend/ .
-RUN npm run build
-# Stage 2: Python backend
-FROM python:3.11-slim AS backend-builder
 RUN apt-get update && apt-get install -y --no-install-recommends \
-    iverilog \
     && rm -rf /var/lib/apt/lists/*
-WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r requirements.txt
 COPY . .
-COPY --from=frontend-builder /app/build /app/frontend/build
 RUN pip install --no-cache-dir -e .
 RUN groupadd -r uvmgen && useradd -r -g uvmgen -d /app -s /sbin/nologin uvmgen
 RUN mkdir -p /app/output /app/logs /var/data && chown -R uvmgen:uvmgen /app /var/data
-EXPOSE 8000
 ENV UVMGEN_OUTPUT_DIR=/var/data/uvmgen_output
-HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
-    CMD python -c "import urllib.request; print(urllib.request.urlopen('http://localhost:8000/api/health').read().decode())"
 USER uvmgen
-CMD ["uvicorn", "src.api.server:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1", "--log-level", "info"]

+FROM python:3.11-slim
 WORKDIR /app
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
     && rm -rf /var/lib/apt/lists/*
 COPY requirements.txt .
 RUN pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir -r requirements.txt
 COPY . .
 RUN pip install --no-cache-dir -e .
 RUN groupadd -r uvmgen && useradd -r -g uvmgen -d /app -s /sbin/nologin uvmgen
 RUN mkdir -p /app/output /app/logs /var/data && chown -R uvmgen:uvmgen /app /var/data
+EXPOSE 7860
 ENV UVMGEN_OUTPUT_DIR=/var/data/uvmgen_output
 USER uvmgen
+CMD ["uvicorn", "src.api.server:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1", "--log-level", "info"]

src/api/server.py CHANGED Viewed

@@ -216,7 +216,587 @@ _IS_BUILT = FRONTEND_BUILD.exists()
 if _IS_BUILT:
     logger.info("Serving frontend from %s", FRONTEND_BUILD)
-from fastapi.responses import HTMLResponse
 @app.get("/", include_in_schema=False)
@@ -226,17 +806,17 @@ async def serve_index():
         index = FRONTEND_BUILD / "index.html"
         if index.exists():
             return FileResponse(str(index))
-    return HTMLResponse("<h1>UVM TB Generator API</h1><p>Frontend not built. Run <code>cd frontend && npm run build</code></p>")
 @app.get("/static/{rest_of_path:path}", include_in_schema=False)
 async def serve_static(rest_of_path: str):
     if not _IS_BUILT:
-        return JSONResponse(404, {"error": "Not found"})
     file_path = FRONTEND_BUILD / "static" / rest_of_path
     if file_path.exists() and file_path.is_file():
         return FileResponse(str(file_path))
-    return JSONResponse(404, {"error": "Not found"})
 @app.get("/{full_path:path}", include_in_schema=False)
@@ -250,7 +830,7 @@ async def serve_spa(full_path: str):
         index = FRONTEND_BUILD / "index.html"
         if index.exists():
             return FileResponse(str(index))
-    return JSONResponse(404, {"error": "Not found"})
 # ── Direct execution ───────────────────────────────────────────────

 if _IS_BUILT:
     logger.info("Serving frontend from %s", FRONTEND_BUILD)
+EMBEDDED_UI = """
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>UVM Testbench Generator</title>
+    <script src="https://cdn.jsdelivr.net/npm/@tailwindcss/browser@4"></script>
+    <style>
+        .code-editor {
+            font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
+            font-size: 13px;
+            tab-size: 2;
+        }
+        .fade-in {
+            animation: fadeIn 0.3s ease-in;
+        }
+        @keyframes fadeIn {
+            from { opacity: 0; transform: translateY(-10px); }
+            to { opacity: 1; transform: translateY(0); }
+        }
+        .pulse {
+            animation: pulse 2s infinite;
+        }
+        @keyframes pulse {
+            0%, 100% { opacity: 1; }
+            50% { opacity: 0.5; }
+        }
+    </style>
+</head>
+<body class="bg-gray-900 text-gray-100 min-h-screen">
+    <div id="app">
+        <!-- Header -->
+        <header class="bg-gray-800 border-b border-gray-700">
+            <div class="max-w-7xl mx-auto px-4 py-4">
+                <div class="flex items-center justify-between">
+                    <div class="flex items-center gap-3">
+                        <div class="w-10 h-10 bg-gradient-to-br from-blue-500 to-indigo-600 rounded-lg flex items-center justify-center">
+                            <svg class="w-6 h-6 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 3v2m6-2v2M9 19v2m6-2v2M5 9H3m2 6H3m18-6h-2m2 6h-2M7 19h10a2 2 0 002-2V7a2 2 0 00-2-2H7a2 2 0 00-2 2v10a2 2 0 002 2zM9 9h6v6H9V9z"></path>
+                            </svg>
+                        </div>
+                        <div>
+                            <h1 class="text-xl font-bold text-white">UVM Testbench Generator</h1>
+                            <p class="text-sm text-gray-400">AI-Powered Semiconductor Verification Pipeline</p>
+                        </div>
+                    </div>
+                    <div class="flex items-center gap-2 text-sm text-gray-400">
+                        <span class="w-2 h-2 bg-green-500 rounded-full"></span>
+                        <span>API Online</span>
+                    </div>
+                </div>
+            </div>
+        </header>
+        <!-- Main Content -->
+        <main class="max-w-7xl mx-auto px-4 py-8">
+            <div class="grid lg:grid-cols-2 gap-8">
+                <!-- Input Section -->
+                <div class="space-y-6">
+                    <!-- Spec Editor -->
+                    <div class="bg-gray-800 rounded-xl border border-gray-700 overflow-hidden">
+                        <div class="px-4 py-3 bg-gray-750 border-b border-gray-700 flex items-center justify-between">
+                            <h2 class="font-semibold text-gray-200">Specification</h2>
+                            <select id="example-select" class="bg-gray-700 text-gray-200 text-sm rounded px-3 py-1 border border-gray-600 focus:outline-none focus:ring-2 focus:ring-blue-500">
+                                <option value="uart">UART Example</option>
+                                <option value="spi">SPI Example</option>
+                                <option value="i2c">I2C Example</option>
+                            </select>
+                        </div>
+                        <div class="p-4">
+                            <textarea id="spec-editor" class="code-editor w-full h-96 bg-gray-900 text-green-400 p-4 rounded-lg border border-gray-700 focus:outline-none focus:ring-2 focus:ring-blue-500 resize-none" placeholder="Paste your YAML or .core specification here..."></textarea>
+                        </div>
+                    </div>
+                    <!-- Options -->
+                    <div class="bg-gray-800 rounded-xl border border-gray-700 p-6">
+                        <h2 class="font-semibold text-gray-200 mb-4">Options</h2>
+                        <div class="grid grid-cols-2 gap-4">
+                            <div>
+                                <label class="block text-sm text-gray-400 mb-1">Design Name</label>
+                                <input type="text" id="design-name" value="my_design" class="w-full bg-gray-900 text-gray-200 px-3 py-2 rounded border border-gray-700 focus:outline-none focus:ring-2 focus:ring-blue-500">
+                            </div>
+                            <div>
+                                <label class="block text-sm text-gray-400 mb-1">Max Iterations</label>
+                                <input type="number" id="max-iterations" value="1" min="1" max="50" class="w-full bg-gray-900 text-gray-200 px-3 py-2 rounded border border-gray-700 focus:outline-none focus:ring-2 focus:ring-blue-500">
+                            </div>
+                        </div>
+                        <div class="mt-4 flex items-center gap-2">
+                            <input type="checkbox" id="auto-train" class="w-4 h-4 text-blue-600 bg-gray-700 border-gray-600 rounded focus:ring-blue-500">
+                            <label for="auto-train" class="text-sm text-gray-300">Enable Auto-Training (Coverage-Driven)</label>
+                        </div>
+                    </div>
+                    <!-- Run Button -->
+                    <button id="run-btn" class="w-full bg-gradient-to-r from-blue-600 to-indigo-600 hover:from-blue-700 hover:to-indigo-700 text-white font-semibold py-4 px-6 rounded-xl transition-all duration-200 transform hover:scale-[1.02] active:scale-[0.98] flex items-center justify-center gap-2">
+                        <svg id="run-icon" class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.752 11.168l-3.197-2.132A1 1 0 0010 9.87v4.263a1 1 0 001.555.832l3.197-2.132a1 1 0 000-1.664z"></path>
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path>
+                        </svg>
+                        <span id="btn-text">Generate UVM Testbench</span>
+                    </button>
+                </div>
+                <!-- Output Section -->
+                <div class="space-y-6">
+                    <!-- Status -->
+                    <div id="status-panel" class="hidden bg-gray-800 rounded-xl border border-gray-700 p-6 fade-in">
+                        <div class="flex items-center gap-3 mb-4">
+                            <div id="status-icon" class="w-8 h-8 rounded-full flex items-center justify-center">
+                            </div>
+                            <div>
+                                <h3 id="status-title" class="font-semibold text-gray-200"></h3>
+                                <p id="status-message" class="text-sm text-gray-400"></p>
+                            </div>
+                        </div>
+                        <div id="progress-bar" class="hidden">
+                            <div class="w-full bg-gray-700 rounded-full h-2">
+                                <div class="bg-blue-600 h-2 rounded-full pulse" style="width: 100%"></div>
+                            </div>
+                        </div>
+                    </div>
+                    <!-- Results -->
+                    <div id="results-panel" class="hidden space-y-6 fade-in">
+                        <!-- Metrics -->
+                        <div class="bg-gray-800 rounded-xl border border-gray-700 p-6">
+                            <h3 class="font-semibold text-gray-200 mb-4">Generation Metrics</h3>
+                            <div class="grid grid-cols-3 gap-4">
+                                <div class="text-center p-3 bg-gray-900 rounded-lg">
+                                    <p id="metric-files" class="text-2xl font-bold text-blue-400">-</p>
+                                    <p class="text-xs text-gray-400">Files Generated</p>
+                                </div>
+                                <div class="text-center p-3 bg-gray-900 rounded-lg">
+                                    <p id="metric-status" class="text-2xl font-bold text-green-400">-</p>
+                                    <p class="text-xs text-gray-400">Status</p>
+                                </div>
+                                <div class="text-center p-3 bg-gray-900 rounded-lg">
+                                    <p id="metric-iterations" class="text-2xl font-bold text-indigo-400">-</p>
+                                    <p class="text-xs text-gray-400">Iterations</p>
+                                </div>
+                            </div>
+                        </div>
+                        <!-- Generated Files -->
+                        <div class="bg-gray-800 rounded-xl border border-gray-700 overflow-hidden">
+                            <div class="px-4 py-3 bg-gray-750 border-b border-gray-700">
+                                <h3 class="font-semibold text-gray-200">Generated Files</h3>
+                            </div>
+                            <div class="p-4 max-h-96 overflow-y-auto">
+                                <div id="files-list" class="space-y-2">
+                                </div>
+                            </div>
+                        </div>
+                        <!-- Download Button -->
+                        <button id="download-btn" class="hidden w-full bg-gradient-to-r from-green-600 to-emerald-600 hover:from-green-700 hover:to-emerald-700 text-white font-semibold py-3 px-6 rounded-xl transition-all">
+                            <span class="flex items-center justify-center gap-2">
+                                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"></path>
+                                </svg>
+                                Download All Files as ZIP
+                            </span>
+                        </button>
+                    </div>
+                    <!-- Logs -->
+                    <div id="logs-panel" class="hidden bg-gray-800 rounded-xl border border-gray-700 overflow-hidden">
+                        <div class="px-4 py-3 bg-gray-750 border-b border-gray-700 flex items-center justify-between">
+                            <h3 class="font-semibold text-gray-200">Logs</h3>
+                            <button id="clear-logs" class="text-xs text-gray-400 hover:text-gray-200">Clear</button>
+                        </div>
+                        <div class="p-4 max-h-64 overflow-y-auto">
+                            <div id="logs" class="code-editor text-xs text-gray-300 space-y-1">
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </main>
+        <!-- Footer -->
+        <footer class="mt-auto py-6 border-t border-gray-800">
+            <div class="max-w-7xl mx-auto px-4 text-center text-sm text-gray-500">
+                <p>UVM Testbench Generator | AI-Powered by <span class="text-blue-400 font-semibold">Sai Kumar Taraka</span></p>
+            </div>
+        </footer>
+    </div>
+    <script src="https://cdn.jsdelivr.net/npm/jszip@3.10.1/dist/jszip.min.js"></script>
+    <script>
+        // Example specs
+        const examples = {
+            uart: `design_name: uart
+clock_reset:
+  clock: clk
+  reset: rst_n
+interfaces:
+  - name: wb
+    signals:
+      - name: wb_cyc
+        direction: input
+      - name: wb_stb
+        direction: input
+      - name: wb_we
+        direction: input
+      - name: wb_addr
+        direction: input
+        width: 3
+      - name: wb_data_o
+        direction: output
+        width: 8
+      - name: wb_data_i
+        direction: input
+        width: 8
+      - name: wb_ack
+        direction: output
+  - name: uart
+    signals:
+      - name: uart_tx
+        direction: output
+      - name: uart_rx
+        direction: input
+registers:
+  - name: RBR_THR
+    address: 0x0
+    description: Receiver Buffer / Transmitter Holding
+  - name: IER
+    address: 0x1
+    description: Interrupt Enable
+  - name: IIR
+    address: 0x2
+    description: Interrupt Identification
+  - name: LCR
+    address: 0x3
+    description: Line Control
+  - name: MCR
+    address: 0x4
+    description: Modem Control
+  - name: LSR
+    address: 0x5
+    description: Line Status
+  - name: MSR
+    address: 0x6
+    description: Modem Status
+  - name: SCR
+    address: 0x7
+    description: Scratch
+protocol: uart`,
+            spi: `design_name: spi_controller
+clock_reset:
+  clock: clk
+  reset: rst_n
+interfaces:
+  - name: apb
+    signals:
+      - name: psel
+        direction: input
+      - name: penable
+        direction: input
+      - name: pwrite
+        direction: input
+      - name: paddr
+        direction: input
+        width: 8
+      - name: pwdata
+        direction: input
+        width: 32
+      - name: prdata
+        direction: output
+        width: 32
+      - name: pready
+        direction: output
+  - name: spi
+    signals:
+      - name: sclk
+        direction: output
+      - name: mosi
+        direction: output
+      - name: miso
+        direction: input
+      - name: cs_n
+        direction: output
+        width: 4
+registers:
+  - name: CTRL
+    address: 0x0
+    description: Control Register
+  - name: TXDATA
+    address: 0x4
+    description: TX Data
+  - name: RXDATA
+    address: 0x8
+    description: RX Data
+  - name: STATUS
+    address: 0xC
+    description: Status Register
+  - name: DIVIDER
+    address: 0x10
+    description: Clock Divider
+  - name: CS
+    address: 0x14
+    description: Chip Select
+protocol: spi`,
+            i2c: `design_name: i2c_master
+clock_reset:
+  clock: clk
+  reset: rst_n
+interfaces:
+  - name: axi4lite
+    signals:
+      - name: awvalid
+        direction: input
+      - name: awready
+        direction: output
+      - name: awaddr
+        direction: input
+        width: 16
+      - name: wvalid
+        direction: input
+      - name: wready
+        direction: output
+      - name: wdata
+        direction: input
+        width: 32
+      - name: bvalid
+        direction: output
+      - name: bready
+        direction: input
+      - name: arvalid
+        direction: input
+      - name: arready
+        direction: output
+      - name: araddr
+        direction: input
+        width: 16
+      - name: rvalid
+        direction: output
+      - name: rready
+        direction: input
+      - name: rdata
+        direction: output
+        width: 32
+  - name: i2c
+    signals:
+      - name: scl
+        direction: inout
+      - name: sda
+        direction: inout
+registers:
+  - name: PRESCALE
+    address: 0x0
+    description: Clock Prescale
+  - name: CTRL
+    address: 0x4
+    description: Control
+  - name: TX_RX
+    address: 0x8
+    description: TX/RX Data
+  - name: CMD_STATUS
+    address: 0xC
+    description: Command / Status
+protocol: i2c`
+        };
+        // State
+        let generatedFiles = {};
+        let isRunning = false;
+        // DOM Elements
+        const specEditor = document.getElementById('spec-editor');
+        const exampleSelect = document.getElementById('example-select');
+        const designNameInput = document.getElementById('design-name');
+        const maxIterationsInput = document.getElementById('max-iterations');
+        const autoTrainCheckbox = document.getElementById('auto-train');
+        const runBtn = document.getElementById('run-btn');
+        const btnText = document.getElementById('btn-text');
+        const runIcon = document.getElementById('run-icon');
+        const statusPanel = document.getElementById('status-panel');
+        const statusIcon = document.getElementById('status-icon');
+        const statusTitle = document.getElementById('status-title');
+        const statusMessage = document.getElementById('status-message');
+        const progressBar = document.getElementById('progress-bar');
+        const resultsPanel = document.getElementById('results-panel');
+        const logsPanel = document.getElementById('logs-panel');
+        const logsDiv = document.getElementById('logs');
+        const filesList = document.getElementById('files-list');
+        const downloadBtn = document.getElementById('download-btn');
+        const clearLogsBtn = document.getElementById('clear-logs');
+        // Initialize
+        specEditor.value = examples.uart;
+        // Example selection
+        exampleSelect.addEventListener('change', () => {
+            specEditor.value = examples[exampleSelect.value];
+        });
+        // Log function
+        function log(message, type = 'info') {
+            const timestamp = new Date().toLocaleTimeString();
+            const color = {
+                info: 'text-gray-300',
+                success: 'text-green-400',
+                warning: 'text-yellow-400',
+                error: 'text-red-400'
+            }[type] || 'text-gray-300';
+            const line = document.createElement('div');
+            line.className = color;
+            line.textContent = `[${timestamp}] ${message}`;
+            logsDiv.appendChild(line);
+            logsDiv.scrollTop = logsDiv.scrollHeight;
+            logsPanel.classList.remove('hidden');
+        }
+        // Update status
+        function updateStatus(title, message, status = 'running') {
+            statusPanel.classList.remove('hidden');
+            const iconColors = {
+                running: 'bg-blue-500',
+                success: 'bg-green-500',
+                error: 'bg-red-500',
+                warning: 'bg-yellow-500'
+            };
+            const icons = {
+                running: `<svg class="w-4 h-4 text-white animate-spin" fill="none" viewBox="0 0 24 24"><circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle><path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path></svg>`,
+                success: `<svg class="w-4 h-4 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path></svg>`,
+                error: `<svg class="w-4 h-4 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path></svg>`,
+                warning: `<svg class="w-4 h-4 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"></path></svg>`
+            };
+            statusIcon.className = `w-8 h-8 rounded-full flex items-center justify-center ${iconColors[status] || iconColors.running}`;
+            statusIcon.innerHTML = icons[status] || icons.running;
+            statusTitle.textContent = title;
+            statusMessage.textContent = message;
+            progressBar.classList.toggle('hidden', status !== 'running');
+        }
+        // Set button state
+        function setButtonState(running) {
+            isRunning = running;
+            runBtn.disabled = running;
+            if (running) {
+                btnText.textContent = 'Generating...';
+                runBtn.classList.add('opacity-75', 'cursor-not-allowed');
+                runBtn.classList.remove('hover:from-blue-700', 'hover:to-indigo-700');
+            } else {
+                btnText.textContent = 'Generate UVM Testbench';
+                runBtn.classList.remove('opacity-75', 'cursor-not-allowed');
+                runBtn.classList.add('hover:from-blue-700', 'hover:to-indigo-700');
+            }
+        }
+        // Run pipeline
+        async function runPipeline() {
+            if (isRunning) return;
+            setButtonState(true);
+            resultsPanel.classList.add('hidden');
+            generatedFiles = {};
+            const specYaml = specEditor.value;
+            const designName = designNameInput.value;
+            const maxIterations = parseInt(maxIterationsInput.value);
+            const autoTrain = autoTrainCheckbox.checked;
+            log('Starting UVM testbench generation...', 'info');
+            log(`Design: ${designName}, Iterations: ${maxIterations}, Auto-Train: ${autoTrain}`, 'info');
+            updateStatus('Running Pipeline', 'Generating UVM testbench...', 'running');
+            try {
+                const response = await fetch('/api/run-pipeline', {
+                    method: 'POST',
+                    headers: {
+                        'Content-Type': 'application/json',
+                    },
+                    body: JSON.stringify({
+                        spec_yaml: specYaml,
+                        design_name: designName,
+                        auto_train: autoTrain,
+                        max_iterations: maxIterations,
+                        coverage_target: 90.0,
+                        num_seeds: 3,
+                        overwrite: true
+                    })
+                });
+                if (!response.ok) {
+                    const error = await response.json();
+                    throw new Error(error.message || error.detail || 'Request failed');
+                }
+                const result = await response.json();
+                log(`Generation complete! Status: ${result.status}`, 'success');
+                log(`Files generated: ${result.total_files}`, 'success');
+                // Fetch file contents
+                generatedFiles = {};
+                if (result.artifacts && result.artifacts.length > 0) {
+                    // For now, we'll use the artifact info. In a real deployment,
+                    // we'd need endpoints to download individual files.
+                    log('Note: File download requires artifact endpoints', 'warning');
+                }
+                updateStatus('Complete', 'UVM testbench generated successfully', 'success');
+                // Show results
+                document.getElementById('metric-files').textContent = result.total_files;
+                document.getElementById('metric-status').textContent = result.status.toUpperCase();
+                document.getElementById('metric-iterations').textContent = result.iterations;
+                // Show files list
+                filesList.innerHTML = '';
+                if (result.artifacts) {
+                    result.artifacts.forEach((artifact, index) => {
+                        const div = document.createElement('div');
+                        div.className = 'flex items-center justify-between p-3 bg-gray-900 rounded-lg';
+                        div.innerHTML = `
+                            <div class="flex items-center gap-2">
+                                <svg class="w-4 h-4 text-blue-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path>
+                                </svg>
+                                <span class="text-sm text-gray-300">${artifact.name}</span>
+                            </div>
+                        `;
+                        filesList.appendChild(div);
+                    });
+                }
+                resultsPanel.classList.remove('hidden');
+            } catch (error) {
+                log(`Error: ${error.message}`, 'error');
+                updateStatus('Error', error.message, 'error');
+            }
+            setButtonState(false);
+        }
+        // Event listeners
+        runBtn.addEventListener('click', runPipeline);
+        clearLogsBtn.addEventListener('click', () => {
+            logsDiv.innerHTML = '';
+        });
+        // Health check on load
+        fetch('/api/health')
+            .then(r => r.json())
+            .then(data => {
+                log(`API ready: ${data.status} (v${data.version})`, 'success');
+            })
+            .catch(e => {
+                log('API health check failed', 'warning');
+            });
+    </script>
+</body>
+</html>
+"""
+from fastapi.responses import FileResponse, HTMLResponse, JSONResponse
 @app.get("/", include_in_schema=False)
         index = FRONTEND_BUILD / "index.html"
         if index.exists():
             return FileResponse(str(index))
+    return HTMLResponse(EMBEDDED_UI)
 @app.get("/static/{rest_of_path:path}", include_in_schema=False)
 async def serve_static(rest_of_path: str):
     if not _IS_BUILT:
+        return JSONResponse(status_code=404, content={"error": "Not found"})
     file_path = FRONTEND_BUILD / "static" / rest_of_path
     if file_path.exists() and file_path.is_file():
         return FileResponse(str(file_path))
+    return JSONResponse(status_code=404, content={"error": "Not found"})
 @app.get("/{full_path:path}", include_in_schema=False)
         index = FRONTEND_BUILD / "index.html"
         if index.exists():
             return FileResponse(str(index))
+    return HTMLResponse(EMBEDDED_UI)
 # ── Direct execution ───────────────────────────────────────────────