Root causes fixed:
1. branchAngle routing only matched 0° — now uses isExtendAngle()
for all extend angles (0/180/45/315), vertical (90/270) = fork
2. handleForkBranch did nothing at dim 1 — now opens thema form
3. After form submit, Inertia reloaded entire page losing canvas
dimension state — now uses axios + refreshMapData() via API
4. Custom metro node form used dead Inertia useForm refs
Changes:
- All creation flows now use axios POST + refreshMapData() which
fetches /api/map/strategy or /api/map/project/{id} without page
reload, preserving the canvas dimension and zoom state
- New thema creation modal (for ↑↓ fork at dim 1)
- Track creation modal updated to use axios (for ↑↓ fork in dim 2)
- Metro node creation modal updated to use axios
- CommitmentForm @close now triggers refreshMapData()
- CommitmentForm eigenaar_id now has required validation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
8dc6e65e28