docs(changelog): add CHANGELOG.md with v1.0.0-rc2 entry

Tracks v1.0.0-rc2 release. No functional changes in this service this
cycle — only the CI workflow extension to publish develop images.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: DavidsonGomes

CHANGELOG.md

@@ -0,0 +1,41 @@
+# Changelog
+
+All notable changes to **evo-bot-runtime** will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- N/A
+
+### Changed
+
+- N/A
+
+### Fixed
+
+- N/A
+
+## [v1.0.0-rc2] - 2026-05-05
+
+Release sem mudanças funcionais neste serviço — apenas ajustes de pipeline / staging.
+
+### Changed
+
+- **CI**: workflow agora também publica imagens `develop` para staging. (#1)
+
+## [v1.0.0-rc1] - 2026-04-24
+
+### Added
+
+- Primeiro release candidate público do `evo-bot-runtime`.
+- Serviço Go de orquestração de chatbot (Bot Runtime).
+
+---
+
+[Unreleased]: https://github.com/EvolutionAPI/evo-bot-runtime/compare/v1.0.0-rc2...HEAD
+[v1.0.0-rc2]: https://github.com/EvolutionAPI/evo-bot-runtime/compare/v1.0.0-rc1...v1.0.0-rc2
+[v1.0.0-rc1]: https://github.com/EvolutionAPI/evo-bot-runtime/releases/tag/v1.0.0-rc1