fix: add missing installation_type in NVM_BIN ClaudeInstallation

[FerBuono]

Summary

When running the Tauri dev build, compilation failed with E0063 due to a missing
installation_type field in the ClaudeInstallation initializer for the NVM_BIN
detection path.

This PR adds:

• installation_type: InstallationType::System to the NVM_BIN path, matching the
  existing behavior used in the NVM directory scan.

Reproduction

# dev build
bun run tauri dev
# or
cd src-tauri && cargo build

Error

error[E0063]: missing field `installation_type` in initializer of `ClaudeInstallation`
   --> src/claude_binary.rs:222:32
    |
222 |             installations.push(ClaudeInstallation {
    |                                ^^^^^^^^^^^^^^^^^^ missing `installation_type`