Remove dev-main version and update onym dependency to stable release

- Remove hardcoded "dev-main" version from composer.json (version should be determined by git tags)
- Update blaspsoft/onym dependency from "dev-main" to "^1.0" for stable releases

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Co-Authored-By: Claude <noreply@anthropic.com>

Official v1.0.0 release of doxswap

First beta release