fix(build): stop stripping numpy.lib/linalg from site-packages

numpy's own __init__.py imports lib and matrixlib (which in turn imports
numpy.linalg via defmatrix.py). Removing any of these submodules to save
dist size makes `import numpy` raise ModuleNotFoundError on the target,
which cascades into every wled_controller import.

Symptom: v0.0.0.dev0 Windows installer showed a tray icon but uvicorn
died silently in its background thread and port 8080 never listened —
browser got ERR_CONNECTION_REFUSED.

Keep stripping: polynomial, distutils, f2py, typing, _pyinstaller.
These are genuinely unused by numpy's own import chain.

build-common.sh

@@ -110,8 +110,12 @@ cleanup_site_packages() {
     fi
 
     # ── NumPy ────────────────────────────────────────────────
-    # Remove unused submodules (only core, fft, random are used)
-    for mod in polynomial linalg ma lib distutils f2py typing _pyinstaller; do
+    # Only strip modules that are safely unused by numpy's own import chain.
+    # DO NOT strip: lib, linalg, ma, matrixlib — numpy.__init__ imports them
+    # transitively (e.g. matrixlib → defmatrix → linalg), so removing any of
+    # these breaks `import numpy` itself, cascading into every downstream
+    # module. Learned the hard way in the v0.0.0.dev0 Windows build.
+    for mod in polynomial distutils f2py typing _pyinstaller; do
         rm -rf "$sp_dir/numpy/$mod" 2>/dev/null || true
     done
     rm -rf "$sp_dir/numpy/tests" "$sp_dir/numpy/*/tests" 2>/dev/null || true