feat(scripts): support version argument via bash -s

[pitzcarraldo]

Summary

Add support for specifying version as a command-line argument when installing Clix CLI. This enables reliable version specification through piped execution.

Details

Problem: Environment variables don't propagate through shell pipes. When users run:

CLIX_VERSION=v1.0.0 curl -fsSL https://clix.sh/install | bash

The CLIX_VERSION variable only applies to curl, not to the piped bash process.

Solution: Accept version as a positional argument using bash -s:

curl -fsSL https://clix.sh/install | bash -s v1.0.0

This approach is inspired by Claude Code's install script.

Priority: Argument > Environment variable > Default ("latest")

Related Issues

Related to #11 (previous fix for env var export)

How to Validate

1. Install specific version: curl -fsSL https://clix.sh/install | bash -s v1.1.0
2. Verify output shows "Installing Clix CLI v1.1.0..."
3. Install latest (default): curl -fsSL https://clix.sh/install | bash
4. Verify output shows "Fetching latest version..."

Pre-Merge Checklist

Code Quality

• Code builds without errors (bun run build)
• Types check correctly (bun run typecheck)
• Linter passes (bun run lint)
• Tests pass (bun test)
• Added/updated tests for new functionality (if applicable)

Documentation

• Updated relevant documentation (if needed)
• Updated CLAUDE.md if architecture changed (if needed)

Commit Standards

• Commits follow Conventional Commits format
• No breaking changes, OR breaking changes are documented

Platform Validation

• macOS
• Linux

Summary by CodeRabbit

Release Notes

• New Features

  • Installation script now accepts version as a command-line argument, with automatic fallback to environment variable or "latest" as default.

• Documentation

  • Updated installation instructions and help text to reflect the new version argument capability.

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[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Adds positional argument support to the installer script for specifying CLIX_VERSION, with fallback logic that prioritizes the argument over the environment variable, defaulting to "latest". Updates corresponding help text to document this behavior.

Changes

Cohort / File(s)	Summary
Installer script version configuration scripts/install.sh	Adds positional argument parsing for CLIX_VERSION with conditional precedence (argument → environment variable → "latest" default); updates usage/help text documentation

Possibly related PRs

• fix(scripts): export env vars to pass through piped execution #11: Ensures CLIX_VERSION is exported to subprocesses in the installer flow
• fix(scripts): replace symlinks with wrapper scripts for install/uninstall #10: Implements wrapper scripts that passthrough CLIX_VERSION to the remote installer

Suggested reviewers

• JeongwooYoo

✨ Finishing touches

• 📝 Generate docstrings

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