feat: Support for Amazon Bedrock

[gopinaath]

Summary

Add Amazon Bedrock as a provider for cc-mirror, enabling users to use Claude models via AWS Bedrock with isolated configuration.

• Add bedrock provider with native AWS SDK authentication
• Add AWS-themed brand preset (orange/amber colors)
• Add Amazon Bedrock splash art for wrapper scripts
• No hardcoded model IDs (user must provide via --model-* flags)

Usage

# Regional model IDs (routes to specific region)
npx cc-mirror quick --provider bedrock --name br \
  --model-sonnet "us.anthropic.claude-sonnet-4-5-20250929-v1:0" \
  --model-opus "us.anthropic.claude-opus-4-5-20251101-v1:0" \
  --model-haiku "us.anthropic.claude-haiku-4-5-20251001-v1:0"

# Global inference profiles (cross-region routing)
npx cc-mirror quick --provider bedrock --name br-global \
  --model-sonnet "global.anthropic.claude-sonnet-4-5-20250929-v1:0" \
  --model-opus "global.anthropic.claude-opus-4-5-20251101-v1:0" \
  --model-haiku "global.anthropic.claude-haiku-4-5-20251001-v1:0"

# Custom inference profile ARN
npx cc-mirror quick --provider bedrock --name br-profile \
  --model-sonnet "arn:aws:bedrock:us-east-1:123456789012:inference-profile/my-profile"

Authentication

Amazon Bedrock uses native AWS SDK credential chain (no API key needed):

1. AWS_BEARER_TOKEN_BEDROCK - Bearer token (highest priority)
2. AWS_ACCESS_KEY_ID + AWS_SECRET_ACCESS_KEY - Explicit credentials
3. AWS_SESSION_TOKEN - For temporary credentials
4. AWS_PROFILE - AWS profile name
5. Default credential chain (~/.aws/credentials, IAM roles)

Implementation Details

• Sets CLAUDE_CODE_USE_BEDROCK=1 to enable Claude Code's native Bedrock mode
• Uses authMode: 'none' (like mirror provider) - AWS handles authentication
• Uses requiresModelMapping: true (like OpenRouter) - no hardcoded model IDs
• Default AWS_REGION=us-east-1 (overridable)

Test plan

• E2E tests for Amazon Bedrock provider configuration
• Tests for regional and global model ID formats
• Tests for inference profile ARN support
• Tests for AWS_REGION override via extraEnv
• Tests for AWS_BEARER_TOKEN_BEDROCK passthrough
• Verified splash art and brand theme

Files Changed

File	Lines	Description
src/providers/index.ts	+26/-2	Amazon Bedrock provider + buildEnv fix for authMode:'none'
src/brands/bedrock.ts	+215	AWS-themed brand preset for Amazon Bedrock (new)
src/brands/index.ts	+7	Register Amazon Bedrock brand
src/core/wrapper.ts	+26/-1	Amazon Bedrock splash art and colors
src/cli/help.ts	+5/-1	Add Amazon Bedrock to provider/brand lists
test/e2e/bedrock.test.ts	+491	Comprehensive Amazon Bedrock tests (new)
test/e2e/providers.ts	+8	Add Amazon Bedrock to test matrix
README.md	+52/-5	Amazon Bedrock documentation
AGENTS.md	+47	Amazon Bedrock configuration reference
docs/architecture/overview.md	+35/-19	Provider comparison updates for Amazon Bedrock

🤖 Generated with Claude Code