eng-1668: Add --yes option, --output=json, and improve table list display

[pokgak]

Summary

Major CLI usability improvements with consistent --yes flags, --output=json support, human-friendly age display, and structured utilities for better maintainability.

✨ New Features

1. Skip Confirmation Prompts (--yes/-y)

Bypass interactive confirmations for automation and scripting.

Commands Updated:

• prime sandbox create --yes
• prime sandbox delete --yes
• prime pod create --yes
• prime pod terminate --yes

2. JSON Output Support (--output=json)

Machine-readable output for automation with consistent field exposure.

Commands Updated:

• prime sandbox list --output=json
• prime sandbox get <id> --output=json
• prime pods list --output=json
• prime pods status <id> --output=json
• prime env list --output=json
• prime availability list --output=json

3. Human-Friendly Age Display

Tables show intuitive age format, JSON preserves precise timestamps.

Commands Updated:

• prime sandbox list - Age column (29m, 2h, 3d format)
• prime pods list - Age column (29m, 2h, 3d format)

4. Consistent List Sorting

All lists sorted chronologically with oldest items first.

Commands Updated:

• prime sandbox list - Sorted by creation time
• prime pods list - Sorted by creation time

5. Structured Utilities Package

Extracted shared code into organized utility modules for better maintainability.

📋 Examples

Skip Confirmations (Great for Scripts)

# Create resources without prompts
prime sandbox create ubuntu:20.04 --name my-sandbox --yes
prime pod create --id 1234 --yes

# Delete resources without prompts  
prime sandbox delete sandbox-123 --yes
prime pod terminate pod-456 --yes

JSON Output for Automation

# Get structured data for scripts
prime sandbox list --output=json | jq '.sandboxes[].id'
prime pods list --output=json | jq '.pods[] | select(.status == "ACTIVE")'
prime availability list --output=json | jq '.gpu_resources[] | select(.price_value < 1.0)'

# Pipe to other tools
prime env list --output=json | jq '.environments[] | .environment'

Improved List Display

prime sandbox list
# Output:
# ID        NAME           IMAGE         STATUS   RESOURCES      AGE
# sb-old    old-sandbox    ubuntu:20.04  RUNNING  2CPU/4GB/1GPU  3d    ← Oldest
# sb-new    new-sandbox    python:3.9    RUNNING  1CPU/2GB       29m   ← Newest

prime pods list  
# Output:
# ID        NAME     GPU        STATUS   AGE
# pod-old   test-1   A100 x1    ACTIVE   2h     ← Oldest
# pod-new   test-2   V100 x2    ACTIVE   15m    ← Newest

Detailed Status Information

# Table format (human-readable)
prime pods status pod-123
prime sandbox get sandbox-456

# JSON format (automation-friendly)
prime pods status pod-123 --output=json
prime sandbox get sandbox-456 --output=json

🔧 Technical Details

Smart Output Format Selection:

• Table format: Human-friendly age (29m, 2h, 3d) for quick scanning
• JSON format: ISO timestamps (2024-01-15 14:30:00 UTC) for precision
• Validation: Clear error messages for invalid formats

Shared Utilities Architecture:

• utils/time_utils.py - Age formatting, timestamp handling, sorting
• utils/display.py - Table building, status colors, JSON output
• utils/formatters.py - Resource formatting, price display, env var obfuscation
• utils/prompt.py - Confirmation prompts with --yes support