v0.3.0

Adds a mod/client version-compatibility check and switches distribution to
GitHub Release only (Thunderstore upload paused).

Added

• Connection.GetModVersion: Added a unary RPC that returns the running
  mod version. The Python client probes it once per process on first connect
  (_BaseClient.__aenter__) and warns when the mod is older than or mismatched
  with the client, pointing to the GitHub Release for an aligned build. The
  probe never fails the connection (errors are swallowed). Exposed on the Python
  side as ConnectionClient.get_mod_version(). The ModInfo is injected into
  the Core ConnectionService (Core ← Mod direction preserved; the Mod supplies
  PluginMetadata.VERSION via GrpcHost.Start(modVersion))

Changed

• Distribution: Switched to distributing via GitHub Release only.
  Thunderstore upload is paused (package unapproved + layout mismatch); the mod
  is installed through Gale's Import > Local mod.... The zip build pipeline
  (tcli / PackTS / thunderstore.toml) is retained for future store
  re-enablement, and the github-release job additionally attaches a fixed-name
  ResoniteIO.zip for a stable releases/latest/download/ResoniteIO.zip URL.
  README / installation docs now describe the GitHub Release zip → Gale local
  import flow (supporting plugins must be installed beforehand, since local
  import does not auto-resolve dependencies)