Adds a power_sch

.devcontainer/Dockerfile

@@ -1,14 +1,26 @@
-FROM python:3.12-slim-bookworm
+FROM debian:sid-slim
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
     git \
+    python3 \
+    python3-venv \
+    python3-pip \
     yosys \
     nextpnr-ice40 \
     fpga-icestorm \
     nodejs npm \
     graphviz \
+    kicad \
     && rm -rf /var/lib/apt/lists/*
 
+# Debian marks the system Python as externally-managed (PEP 668), so install
+# project deps into a venv. /opt/venv is first on PATH, so `python`/`pip` resolve
+# to it for all users.
+ENV VIRTUAL_ENV=/opt/venv
+RUN python3 -m venv "$VIRTUAL_ENV"
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+
 RUN npm install -g @anthropic-ai/claude-code
 
 COPY requirements.txt /tmp/requirements.txt

.devcontainer/devcontainer.json

@@ -18,7 +18,7 @@
                 "anthropic.claude-code"
             ],
             "settings": {
-                "python.defaultInterpreterPath": "/usr/local/bin/python"
+                "python.defaultInterpreterPath": "/opt/venv/bin/python"
             }
         }
     }