Core CLI structure and commands (review, scan, init, auth, hook)

[ajianaz]

Core CLI Structure

Implement the main CLI structure using clap with the following subcommands:

Subcommands

• cora review — review git diffs (unstaged, staged, branch, stdin)
• cora scan <path> — scan files/directories for review
• cora init — create .cora.yaml config template
• cora auth set/show — manage API key configuration
• cora hook install/remove — git pre-commit hook management

Requirements

• Use clap with derive macros
• Graceful error handling with anyhow
• Colored, human-friendly terminal output
• Streaming status indicators during LLM calls

Acceptance Criteria

• All subcommands parse and validate arguments
• Help text is clear and complete
• Errors are actionable and human-readable
• Binary is cora (not cora-cli)

[ajianaz]

✅ Implemented in initial release (v0.1.0)