1.14.3

## What's Changed

### Features
- Add lifecycle events for checkpoint operations
- Add support for e2b
- Fall back to DefaultAzureCredential when no API key is provided in Azure integration
- Add Bedrock V4 support
- Add Daytona sandbox tools for enhanced functionality
- Add checkpoint and fork support to standalone agents

### Bug Fixes
- Fix execution_id to be separate from state.id
- Resolve replay of recorded method events on checkpoint resume
- Fix serialization of initial_state class references as JSON schema
- Preserve metadata-only agent skills
- Propagate implicit @CrewBase names to crew events
- Merge execution metadata on duplicate batch initialization
- Fix serialization of Task class-reference fields for checkpointing
- Handle BaseModel result in guardrail retry loop
- Preserve thought_signature in Gemini streaming tool calls
- Emit task_started on fork resume and redesign checkpoint TUI
- Use future dates in checkpoint prune tests to prevent time-dependent failures
- Fix dry-run order and handle checked-out stale branch in devtools release
- Upgrade lxml to >=6.1.0 for security patch
- Bump python-dotenv to >=1.2.2 for security patch

### Documentation
- Update changelog and version for v1.14.3
- Add 'Build with AI' page and update navigation for all languages
- Remove pricing FAQ from build-with-ai page across all locales

### Performance
- Optimize MCP SDK and event types to reduce cold start by ~29%

### Refactoring
- Refactor checkpoint helpers to eliminate duplication and tighten state type hints

## Contributors

@MatthiasHowellYopp, @akaKuruma, @alex-clawd, @github-actions[bot], @github-advanced-security[bot], @greysonlalonde, @iris-clawd, @lorenzejay, @mattatcha, @renatonitta