Add colored output indicators for investigation confidence levels

[manthan787]

Description

Add color-coded confidence indicators to investigation output for better visual feedback.

Why

When investigating incidents, confidence levels are shown as numbers (e.g., "0.86"). Adding colors would make it immediately clear whether confidence is high, medium, or low:

• 🟢 Green: High confidence (≥0.8)
• 🟡 Yellow: Medium confidence (0.5-0.8)
• 🔴 Red: Low confidence (<0.5)

What to do

1. Look at how the investigation results are rendered in src/cli.tsx
2. The project uses Ink for terminal rendering (React-like)
3. Add conditional coloring based on confidence thresholds
4. Use Ink's <Text color="green"> component

Example

const getConfidenceColor = (confidence: number) => {
  if (confidence >= 0.8) return "green";
  if (confidence >= 0.5) return "yellow";
  return "red";
};

<Text color={getConfidenceColor(hypothesis.confidence)}>
  Confidence: {(hypothesis.confidence * 100).toFixed(0)}%
</Text>

Getting Started

bun install
bun run dev investigate --help  # See the command

Great for learning Ink/React terminal UI!