Add document converter, seeder data structure, and project wiki

- ai-service/convert.py: converts Office/PDF files to markdown with frontmatter
- database/seeders/data/: folder structure for themas, projects, documents, etc.
- database/seeders/data/raw/: drop zone for Office/PDF files to convert
- wiki/: project architecture, concepts, and knowledge graph documentation
- Remove unused Laravel example tests

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

wiki/sessions/2026-04-08-wiki-setup.md

@@ -0,0 +1,41 @@
+---
+title: "Session: Wiki Setup"
+created: 2026-04-08
+updated: 2026-04-08
+status: evolving
+tags: [session, setup, wiki]
+---
+
+# 2026-04-08 — Wiki Setup
+
+## Scope
+Initialize wiki from wiki-template and populate with real codebase data.
+
+## What Was Done
+
+1. **Copied wiki-template** from `/home/znetsixe/wiki-template/` to `innovatieplatform/wiki/`
+2. **Populated overview.md** with what works / what doesn't based on actual code scan
+3. **Populated metrics.md** with codebase size, dependencies, sprint progress
+4. **Populated knowledge-graph.yaml** with structured data: tests, metrics, architecture, domain model, lifecycle phases, timeline
+5. **Created architecture pages**:
+   - `architecture/system-architecture.md` — stack, Docker topology, data flow, services
+   - `architecture/domain-model.md` — 21 models in 8 layers, relationships, enums, lifecycle
+   - `architecture/metro-map-ui.md` — D3 canvas, data contract, design system, planned enhancements
+6. **Created concept pages**:
+   - `concepts/innovation-lifecycle.md` — 9 phases, transition logic, audit trail
+   - `concepts/ai-integration.md` — current stub state, planned RAG architecture
+7. **Updated index.md** with all new pages
+8. **Wired wiki into CLAUDE.md** for agent startup
+
+## Key Numbers (from scan)
+
+| Metric | Value |
+|---|---|
+| Backend LOC | ~13,500 |
+| Frontend LOC | ~3,900 |
+| Models | 21 |
+| Enums | 14 |
+| Migrations | 27 |
+| Vue components | 15 |
+| Tests | 0 |
+| Git commits | 7 |