dakera-cli 0.5.3

Command-line interface for Dakera AI Agent Memory Platform
## Summary

Brief description of the changes.

## Changes

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## Testing

- [ ] `cargo check` passes
- [ ] `cargo clippy -- -D warnings` passes
- [ ] `cargo fmt --check` passes
- [ ] `cargo test` passes
- [ ] Manually tested against a running Dakera server (if applicable)

## Checklist

- [ ] Updated `CHANGELOG.md`
- [ ] Updated documentation (if applicable)
- [ ] No breaking changes to existing commands