docs: consolidate scattered documentation into wiki

Move architecture/, docs/ content into wiki/ for a single source of truth:
- architecture/deployment-blueprint.md → wiki/architecture/
- architecture/stack-architecture-review.md → wiki/architecture/
- architecture/wiki-platform-overview.md → wiki/architecture/
- docs/ARCHITECTURE.md → wiki/architecture/node-architecture.md
- docs/API_REFERENCE.md → wiki/concepts/generalfunctions-api.md
- docs/ISSUES.md → wiki/findings/open-issues-2026-03.md

Remove stale files:
- FUNCTIONAL_ISSUES_BACKLOG.md (was just a redirect pointer)
- temp/ (stale cloud env examples)

Fix README.md gitea URL (centraal.wbd-rd.nl → wbd-rd.nl).
Update wiki index with all consolidated pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -40,7 +40,7 @@ Alle bouwblokken van het R&D-team zijn gebundeld in de **EVOLV-repository**, waa
 ### Eerste keer klonen:
 
 ```bash
-git clone --recurse-submodules https://gitea.centraal.wbd-rd.nl/RnD/EVOLV.git
+git clone --recurse-submodules https://gitea.wbd-rd.nl/RnD/EVOLV.git
 cd EVOLV
 ```
 
@@ -77,7 +77,7 @@ git commit -m "Update submodule <bouwblok-naam>"
 1. Clone de gewenste repository:
 
    ```bash
-   git clone https://gitea.centraal.wbd-rd.nl/<repo-naam>.git
+   git clone https://gitea.wbd-rd.nl/<repo-naam>.git
    ```
 
 2. Kopieer het bouwblok naar je Node-RED map: