many eda additions

tools/kicad-python

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# kicad-python — launcher for KiCad's bundled Python with pcbnew available.
+#
+# Usage:
+#   ./kicad-python <script.py> [args...]
+#   ./kicad-python -c "import pcbnew; ..."
+#   ./kicad-python -m circuit_toolkit.build my-board/
+#
+# Detects KiCad.app on macOS, KiCad on Linux, or KiCad Flatpak.
+# Exits non-zero if KiCad Python is not found.
+
+set -euo pipefail
+
+KICAD_APP="/Applications/KiCad/KiCad.app"
+KICAD_PYTHON="${KICAD_APP}/Contents/Frameworks/Python.framework/Versions/3.9/bin/python3"
+
+# Try Flatpak install
+if [ -x "/var/lib/flatpak/app/org.kicad.KiCad" ] || command -v flatpak &>/dev/null; then
+    FLATPAK_PYTHON=$(flatpak run --command=python3 org.kicad.KiCad 2>/dev/null || true)
+    if [ -n "$FLATPAK_PYTHON" ]; then
+        KICAD_PYTHON="$FLATPAK_PYTHON"
+    fi
+fi
+
+# Try Linux install
+if [ ! -x "$KICAD_PYTHON" ]; then
+    for candidate in \
+        /opt/kicad/bin/python3 \
+        /usr/bin/kicad-python \
+        /usr/bin/python3; do
+        if "$candidate" -c "import pcbnew" 2>/dev/null; then
+            KICAD_PYTHON="$candidate"
+            break
+        fi
+    done
+fi
+
+if [ ! -x "$KICAD_PYTHON" ]; then
+    echo "ERROR: KiCad Python not found at $KICAD_PYTHON" >&2
+    echo "Install KiCad (kicad.org) or a Flatpak, then re-run." >&2
+    exit 1
+fi
+
+exec "$KICAD_PYTHON" "$@"