wasi-python 0.1.0a1

The first alpha: CPython 3.14.8 for wasm32-wasip1 with numpy 2.5.2 and pandas 3.0.6 compiled
in, built from pinned sources with no upstream patches.

• The artifact set: python.wasm (a WASI reactor), python-snapshot.wasm (the same binary
  with numpy and pandas pre-imported by Wizer), the bytecode-only stdlib zip (with
  python-dateutil, tzdata and six), MANIFEST, SHA256SUMS and the licence notices. Each
  rebuilds to the same bytes on one host.
• The guest: two imports only, WASI preview1 and one host door (host::call); run follows
  CPython's command line (-c, -m, a script, stdin, -u, -V).
• The runner: wasi_python.run(argv, root=...) runs one program in one call, with a host
  function for the door, fuel, a deadline, a memory cap and a private compiled-module cache
  (the run extra).
• Known limits: numpy's default integer is 32-bit; no threads, sockets, ssl, sqlite3, bz2 or
  lzma; a C++ exception aborts the guest (wasi-sdk 24); compute is about 1.3 to 2.3 times slower
  than native. Built and judged on arm64 macOS; the release workflow also checks it on Linux
  and Windows.