1.3.0

Minor Changes

• #8 4a246b9 Thanks @TooTallNate! - Add file hashing for upload verification. A new hash_file MCP tool computes a
  file's SHA-256 (hardware-accelerated and streamed in 32 KB chunks, so memory use
  is constant for any file size) and returns just the 64-char hex digest. Passing
  an expected digest also reports a matched boolean, so an agent can confirm an
  upload landed intact in a single round-trip. The same digest is available over
  the raw HTTP API via GET /files/hash?path=....