chore(main): release 6.0.0

[miragon-release-please]

🤖 I have created a release beep boop

6.0.0 (2026-08-19)

⚠ BREAKING CHANGES

• codegen: drop redundant Flows and Compensations API sections (#85)
• core: typed process navigation via reshaped Relations (#55)
• domain,json: BPMN-aligned sealed domain model and process JSON v2 (#81)

Features

• core: bundle process-model JSON schema in the jar (#86) (a1f9fe9)
• core: typed process navigation via reshaped Relations (#55) (3bcb956)
• domain,json: BPMN-aligned sealed domain model and process JSON v2 (#81) (a1d21b9)
• json: expose interrupting flag on boundary and event sub-process start events (#78) (21353f4)
• json: expose zeebe message-subscription correlationKey in message-event properties (#80) (8cb7e18)

Code Refactoring

• codegen: drop redundant Flows and Compensations API sections (#85) (2f90f6f)

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