Add progress indicators to CLI output

[sugat009]

Summary

Add visual progress indicators (spinners, status messages) during long-running operations.

Background

Users need feedback during long operations to know the system is working.

Where to Add

• Documentation search
• Context analysis
• Code generation
• Test generation
• Validation

Implementation Options

1. ora — Popular spinner library
2. cli-progress — Progress bars
3. Custom — Simple status messages

Acceptance Criteria

• Spinner/status shown during LLM calls
• Progress indication for multi-step operations
• Works in both interactive and CI environments
• Can be disabled with --no-progress flag
• Clean output in logs

Dependencies

• None — Can start immediately

Complexity

Medium — Requires async handling and terminal control