Added full design created with Claude

.devcontainer/Dockerfile

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+FROM python:3.12-slim-bookworm
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    yosys \
+    nextpnr-ice40 \
+    fpga-icestorm \
+    nodejs npm \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN npm install -g @anthropic-ai/claude-code
+
+WORKDIR /workspace
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt

.devcontainer/attach-icebreaker.ps1

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+#Requires -RunAsAdministrator
+# Attaches the IceBreaker FPGA (FTDI FT2232H, VID 0403) to WSL2 via usbipd-win.
+# Run this on the Windows host before opening the devcontainer.
+
+$ErrorActionPreference = 'Stop'
+
+if (-not (Get-Command usbipd -ErrorAction SilentlyContinue)) {
+    Write-Error "usbipd not found. Install it from: https://github.com/dorssel/usbipd-win/releases"
+    exit 1
+}
+
+# Find all devices with FTDI VID 0403
+$devices = usbipd list | Where-Object { $_ -match '0403' }
+
+if (-not $devices) {
+    Write-Error "No FTDI device (VID 0403) found. Is the IceBreaker plugged in?"
+    exit 1
+}
+
+if (($devices | Measure-Object).Count -gt 1) {
+    Write-Host "Multiple FTDI devices found:"
+    $devices | ForEach-Object { Write-Host "  $_" }
+    Write-Error "Ambiguous. Unplug other FTDI devices or run 'usbipd attach --wsl --busid <BUSID>' manually."
+    exit 1
+}
+
+# Extract BUSID (first token on the line, e.g. "3-1")
+$busid = ($devices -split '\s+')[0].Trim()
+
+Write-Host "Attaching IceBreaker at bus ID $busid to WSL2..."
+usbipd attach --wsl --busid $busid
+Write-Host "Done. You can now open the devcontainer and use iceprog."

.devcontainer/devcontainer.json

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+{
+    "name": "Amaranth HDL - IceBreaker",
+    "build": {
+        "dockerfile": "Dockerfile",
+        "context": ".."
+    },
+    // USB flashing (iceprog) requires the IceBreaker to be forwarded to WSL2 first.
+    // On Windows: install usbipd-win (https://github.com/dorssel/usbipd-win/releases),
+    // then run (as Administrator) before opening this devcontainer:
+    //   .devcontainer/attach-icebreaker.ps1
+    "runArgs": ["--privileged"],
+    "workspaceFolder": "/workspace",
+    "workspaceMount": "source=${localWorkspaceFolder},target=/workspace,type=bind,consistency=cached",
+    "mounts": [
+        "source=${localEnv:USERPROFILE}/.claude,target=/root/.claude,type=bind,consistency=cached"
+    ],
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-python.python",
+                "ms-python.pylance",
+                "anthropic.claude-code"
+            ],
+            "settings": {
+                "python.defaultInterpreterPath": "/usr/local/bin/python"
+            }
+        }
+    }
+}