doc(arch): WiP - alignemnt with Portal-Frontend activity stream

docs/technical-documentation/architecture/design/mvp1-12-otc/productline-frontend.md

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+### WiP - needs to be reworked
+
+Participants: Michael, Robert, Stephan
+Date: Thu, 05.06.2025
+
+# EDP Product Line 'Portal/Frontend/Forgejo'
+
+[Also refer to other page here](../../../product/components/forgejo/index.md) 
+
+
+## how to proceed
+
+* let's create tickets!
+* let's mob!
+
+## terms
+
+Frontend: The part in the platfrom the user accesses. These are CLIs, APIs and Portals. Forgejo is our Portal.
+
+### Agreement
+
+* Forgejo=Portal (of the platform)
+* Forgejo has a 'Frontend' - this is the touchpoint for users (like HTML-browsers)
+* Forgejo has a backend, which delivers the content to be presented in the frontend
+
+## issues
+
+* Michael into ArchMeeting?! (agreement!)
+    * Robert/Stepan: discusion about our mindset - mobbing as avoiding missing detailed planning, in two streams
+    * Michael - Michal, Felix sind das 'Portal-Frontend'
+        * Tickets in Jira currently
+        * TODO creating tickets in forgejo / porting tickets from Jira
+        * we create the new forgejo-proect 'Portal-Frontend'
+        * zweiter meilenstein: Backend-activities need to be adressed in the future 
+* TODO have a look into the old backstage-portal
+
+* TODO Stephna an Julius ... Logo/CICD: We should define Logo/name tenant name, product name, url schemas
+
+### Development lifecycle
+
+* create project in CFor
+* create tasks in CFor
+* TODO Stephan possible tasks
+    * Environments -> let's provide a 'productline-forgejo' env in OTC!
+    * Pipelines
+    * check all tests!
+
+### Architecture
+
+* Goals:
+    * Stay Open Source compatible!
+    * stay forgejo-downstreaming compatible!
+    * provide ADRs before breaking changes
+
+#### forgejo-Architecture
+
+* analyse, presnt ad discuss forgejo architecture
+* Notice [Forgejo-Design guidleine](https://codeberg.org/forgejo/design/)
+* Notice/You must read [Developer Doc](https://forgejo.org/docs/next/contributor/)
+