feat(cli): add preload command and --no-pull flag

[Copilot]

Adds a preload subcommand to pre-download container images and a --no-pull flag to use locally cached images, ensuring faster startup when running awf commands.

Changes

• src/commands/preload.ts: Command handler that pulls squid and agent images sequentially (sequential to avoid interleaved output)
• src/cli.ts: Registers preload subcommand with --image-registry and --image-tag options, and adds --no-pull flag to main command
• src/types.ts: Adds skipPull option to WrapperConfig
• src/docker-manager.ts: Updates startContainers to pass --pull never when skipPull is true
• src/cli-workflow.ts: Updates interface and workflow to pass skipPull parameter
• src/commands/preload.test.ts: Unit tests covering success, error handling, and custom registry/tag
• src/docker-manager.test.ts: Unit tests for --pull never behavior

Usage

# Pre-download images
awf preload

# Pre-download with custom registry and tag
awf preload --image-registry my-registry.example.com/awf --image-tag v1.0.0

# Use pre-downloaded images (skip pulling)
awf --allow-domains github.com --no-pull -- curl https://api.github.com

Original prompt

#193

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[Mossaka]

@copilot how about improve the existing commands to add a flag to not pull a container image but use the one from local (pre downloaded)

[Copilot]

@copilot how about improve the existing commands to add a flag to not pull a container image but use the one from local (pre downloaded)

Added --no-pull flag to the main command in commit 53be951. Now you can:

# Pre-download images
awf preload

# Use pre-downloaded images without pulling
awf --allow-domains github.com --no-pull -- curl https://api.github.com

When --no-pull is used, Docker Compose runs with --pull never to use locally cached images.

[github-actions]

Test Coverage Report

Metric	Coverage	Covered/Total
Lines	77.25%	1308/1693
Statements	77.3%	1339/1732
Functions	76.59%	144/188
Branches	69.04%	435/630

Coverage Thresholds

The project has the following coverage thresholds configured:

• Lines: 38%
• Statements: 38%
• Functions: 35%
• Branches: 30%

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Coverage report generated by `npm run test:coverage`