Update Claude ACP runtime to 0.34.0

[jsgrrchg]

Summary

• Updates the vendored Claude ACP runtime snapshot to upstream @agentclientprotocol/claude-agent-acp 0.34.0.
• Regenerates the vendored dist/ output from the updated TypeScript sources.
• Adds a Claude AI Provider setup option for Bedrock-compatible gateways.
• Updates the vendor copyright metadata to point at upstream commit 925865216927eb45a5c5877b21dd7373f5b0193a.

Impact

This brings in upstream Bedrock gateway authentication support and exposes it in NeverWrite's AI Providers UI. Anthropic-compatible custom gateways keep using the existing gateway flow, while Bedrock gateways now use gateway-bedrock, ANTHROPIC_BEDROCK_BASE_URL, CLAUDE_CODE_USE_BEDROCK=1, and custom headers without requiring an Anthropic auth token.

Validation

• npm run build in apps/desktop
• npm run test -- AIProvidersSettings.test.tsx in apps/desktop
• cargo test -p neverwrite-native-backend
• npm run build in vendor/Claude-agent-acp-upstream
• npm run test:run in vendor/Claude-agent-acp-upstream
• npm run format:check in vendor/Claude-agent-acp-upstream
• git diff --check