Remove Public/Private Endpoint Distinction

[matKlju]

AS A Service-Module developer
I WANT to remove public/private endpoint separation
SO THAT endpoint management is simplified and consistent across the system

---

Description

Current endpoint model introduces unnecessary complexity by separating endpoints into public/private.

Refactor to a single unified endpoint model:

• One definition
• One execution path
• One source of truth

Focus areas:

• UI (endpoint configuration & visibility)
• Data model (endpoint structure & storage)
• Runtime execution (handler generation & usage)
• DSL templates (endpoint execution logic)
• File generation (endpoint artifacts)
• Supporting types & texts (i18n, enums)

---

Acceptance Criteria

• No public/private distinction in UI or logic
• Endpoints follow a single unified model
• Runtime execution uses one consistent path
• No duplicated endpoint artifacts
• Existing services remain functional (compatibility or migration)

---

Risk

Existing services may depend on previous behavior → might requier compatibility layer or migration

---

Checkpoint

A) Keep compatibility layer
B) Enforce migration and remove legacy behavior