[rhuanbarreto]

Problem

proto install claude-code on Windows (plugin v0.2.0/v0.3.0) emits symlink warnings and running claude fails:

[ WARN ] proto_core::flow::link  Unable to symlink binary, source file does not exist
         source="...\tools\claude-code\2.1.207\claude.exe"
Error: proto::commands::run::missing_alternate_binary
  × Unable to run, alternate binary claude does not exist.

Root cause

Claude Code releases are raw binaries, not archives. When proto installs a non-archive download, it renames the file on disk to the plugin ID (tool.get_file_name() in proto's flow/install.rs) — so the installed file is claude-code.exe, not claude.exe.

#1 renamed the executable in locate_executables from claude-code to claude on the premise that "the downloaded binary is named claude" — but the download name is irrelevant; proto renames it to the plugin ID. That change is what broke v0.2.0+. (Installs made with v0.1.0, where the name happened to match the default ID, still work.)

Fix

Derive the executable name from get_plugin_id() at runtime and mark it as the primary executable — the same pattern moonrepo's own moon plugin uses for its raw-binary releases, with a code comment documenting this exact proto behavior.

This is robust to any plugin ID the user chooses (proto plugin add my-claude ... would install my-claude.exe and still resolve correctly).

Also bumps Cargo.toml version to 0.3.1 (was still 0.1.0, so register_tool reported a stale plugin_version).

Verification

• cargo fmt --check, cargo clippy --target wasm32-wasip1, cargo build --target wasm32-wasip1 all pass
• End-to-end on Windows in an isolated PROTO_HOME, registering the locally built WASM under the ID claude-test (deliberately different from the default to prove ID derivation):
  • install completes with no symlink warnings
  • tool dir contains claude-test.exe; bin/claude.exe, bin/claude-2.exe, bin/claude-2.1.exe and the claude shim are all created
  • both the shim and the bin link run: 2.1.207 (Claude Code)

After merge, tag v0.3.1 to publish the fixed WASM.