Add vertical branch handles and seed architecture documents from diagrams

Branch handles: Added all 6 directions (→ ← ↑ ↓ ↘ ↗) so an entire
metro map can grow from a single starting node. Cardinal directions
(0/90/180/270°) extend the same line, diagonals (45/315°) fork to
new tracks.

Documents seeded from 6 architecture diagrams:
- EVOLV Digital Twin Hierarchy (ISA-88 tracks) → Gemaal 3.0
- Pumping Station dependency chain → Gemaal 3.0
- PLC/EDGE VLAN network architecture → BRIDGE
- R&D Stack topology (Cloud/EDGE/OT) → BRIDGE
- CoreSync network setup → BRIDGE
- R&D Timeline gitflow tracks → Governance

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

database/seeders/DatabaseSeeder.php

@@ -456,6 +456,119 @@ class DatabaseSeeder extends Seeder
             'auteur_id' => $rene->id,
         ]);
 
+        // --- Documents extracted from architecture diagrams (raw/*.drawio.png) ---
+
+        // EVOLV-Tracks-Maintracks: full ISA-88 node hierarchy
+        Document::create([
+            'project_id' => $gemaal->id,
+            'titel' => 'EVOLV Digital Twin Hiërarchie (ISA-88 Tracks)',
+            'type' => 'technisch_ontwerp',
+            'inhoud' => "EVOLV node-hiërarchie conform ISA-88 (S88) batch control standaard.\n\n"
+                . "**Control Module**: measurement, diffuser, healthCompact, filterController\n"
+                . "**Equipment**: Rotating Machine, sump (gepland)\n"
+                . "**Unit**: machineGroupControl, valve, hydraulic network (gepland)\n"
+                . "**Process Cell**: Pumping Station\n"
+                . "**Area**: Sewage Pumping Group Control\n"
+                . "**Complex models**: Influent Prediction\n"
+                . "**Utilities**: generalFunctions, coreSync, convert, dashboardAPI\n"
+                . "**Data manipulation**: onderste laag\n\n"
+                . "Verticale tracks per asset-keten. Horizontale vertakkingen per ISA-88 niveau. "
+                . "Stippellijncirkels = geplande maar nog niet gebouwde nodes. "
+                . "Bron: EVOLV-Tracks-Maintracks.drawio.png",
+            'versie' => 1,
+            'auteur_id' => $rene->id,
+        ]);
+
+        // EVOLV-Tracks-PumpingStation: vertical dependency chain
+        Document::create([
+            'project_id' => $gemaal->id,
+            'titel' => 'Pumping Station Afhankelijkheidsketen',
+            'type' => 'technisch_ontwerp',
+            'inhoud' => "Verticale afhankelijkheidsketen voor de Pumping Station track:\n\n"
+                . "measurement (Control Module) → Rotating Machine (Equipment) → "
+                . "machineGroupControl (Unit) → Sewage Pumping Station (Process Cell) → "
+                . "Sewage Pumping Group Control (Area) → Influent Prediction (Complex) → "
+                . "generalFunctions + coreSync + convert + dashboardAPI (Utilities)\n\n"
+                . "Elke laag is afhankelijk van de laag erboven. Equipment-nodes die als stippellijn staan "
+                . "(sump) zijn gepland maar nog niet ontwikkeld.\n"
+                . "Bron: EVOLV-Tracks-PumpingStation.drawio.png",
+            'versie' => 1,
+            'auteur_id' => $rene->id,
+        ]);
+
+        // PLCEdge: network architecture VLAN separation
+        Document::create([
+            'project_id' => $bridge->id,
+            'titel' => 'PLC/EDGE Netwerk Architectuur (VLAN-scheiding)',
+            'type' => 'technisch_ontwerp',
+            'inhoud' => "Netwerkarchitectuur voor de BRIDGE pilot met VLAN-scheiding:\n\n"
+                . "**Extern Serverpark** (Internet): Digital Twin + Integratielaag op Edem expert system\n"
+                . "**Bouvigne Serverpark** (VLAN 1): Linux Server met Digital Twin + Integratielaag\n"
+                . "**On-site Gemaal/RWZI** (VLAN 2 + 3):\n"
+                . "  - VLAN 3: Linux EDGE met Digital Twin + Integratielaag\n"
+                . "  - VLAN 2: Siemens 1500 PLC (Typical) + Remote IO modules → Pomp\n\n"
+                . "Communicatie: HTTPS tussen extern en Bouvigne, tunnel naar EDGE, OPC UA naar PLC.\n"
+                . "Bron: PLCEdge-Page-1.drawio.png",
+            'versie' => 2,
+            'auteur_id' => $pim->id,
+        ]);
+
+        // Stack: full R&D software stack
+        Document::create([
+            'project_id' => $bridge->id,
+            'titel' => 'R&D Stack Topologie (Cloud / EDGE / OT)',
+            'type' => 'technisch_ontwerp',
+            'inhoud' => "Drielaagse R&D stack architectuur:\n\n"
+                . "**Cloud/Central Layer**: nginx-proxy, Nodered, Portainer, SSL CertResolver, "
+                . "jenkins, influx-db, Grafana, Mosquitto, MQTT Broker, Fluffle (MQTT OUT ONLY broker), "
+                . "ESL dit (single port only)\n\n"
+                . "**EDGE Layer**: Mosquitto/VPN bridge, Nodered, Portainer, influx-db, "
+                . "Grafana, CoreSync, Mosquitto, MQTT SX\n\n"
+                . "**OT Layer**: OPCua Server → PLC\n\n"
+                . "Tunnel-verbinding tussen Cloud en EDGE. OPC UA van EDGE naar OT.\n"
+                . "Bron: Stack.drawio (2).png",
+            'versie' => 1,
+            'auteur_id' => $rene->id,
+        ]);
+
+        // CoreSync: local/central sync topology
+        Document::create([
+            'project_id' => $bridge->id,
+            'titel' => 'CoreSync Netwerk Setup (Single Level)',
+            'type' => 'technisch_ontwerp',
+            'inhoud' => "CoreSync single-level configuratie:\n\n"
+                . "**R&D lokaal ZRG (LVL 1)**: Apparaat 1 + Apparaat 2 met measurement nodes, "
+                . "verbonden via Apparaat 3 (Node-Red container) met GR Bridge flows\n\n"
+                . "**R&D Centraal (LVL 1)**: Apparaat 4 (Node-Red container) met GR Bridge flows, "
+                . "verbonden via HTTPS naar lokaal\n\n"
+                . "Notitie: Elk netwerk dat UR, DR en 1RG bijv de edges zijn dit simpel. "
+                . "Ga through AZURE. Per net tekent voor edge = 1 à 1 b/u to net. "
+                . "PI flow at Bouvigne.\n"
+                . "Bron: CoreSync-Single level.drawio.png",
+            'versie' => 1,
+            'auteur_id' => $pim->id,
+        ]);
+
+        // Complex gitflow: R&D timeline with branching tracks
+        Document::create([
+            'project_id' => $governance->id,
+            'titel' => 'R&D Tijdlijn & Releasebeleid (Gitflow)',
+            'type' => 'projectplan',
+            'inhoud' => "R&D release-tijdlijn als metro-tracks (gitflow model):\n\n"
+                . "**Tracks**: Bestuurlijk, Hotfix, Release, Release Fixes, Studenten, Yellowchess, Budget\n\n"
+                . "**Tijdlijn**:\n"
+                . "- 7/'21: R&D start PRO\n"
+                . "- 8/'21: Introductie met minor avans\n"
+                . "- 9/'21: Start minor PA avans, Opbouw partytent\n"
+                . "- 8/'21: Budget 40k\n"
+                . "- Pilot v0.1 → Verhuizing loods hardenberg → Pilot v0.2\n"
+                . "- Release 2.0 → 2.1\n\n"
+                . "Vertakkingen tonen hoe R&D-werk splitst en samenkomt.\n"
+                . "Bron: EVOLV-Tracks-complex gitflow.drawio.png",
+            'versie' => 1,
+            'auteur_id' => $rene->id,
+        ]);
+
         // ──────────────────────────────────────────────────────────────
         // 9. Dependencies between projects
         // ──────────────────────────────────────────────────────────────

resources/js/Components/MetroMap/MetroCanvas.vue

@@ -505,9 +505,12 @@ const renderBranchHandles = (nodeGroup, node, allNodes) => {
     const HANDLE_R = 9       // handle circle radius
 
     const branches = [
-        { deg: 0,   dx: GRID_STEP_X, dy: 0,             label: '→' },
+        { deg: 0,   dx: GRID_STEP_X,  dy: 0,             label: '→' },   // extend right
-        { deg: 45,  dx: GRID_STEP_X, dy: GRID_STEP_Y,   label: '↘' },
+        { deg: 90,  dx: 0,            dy: GRID_STEP_Y,   label: '↓' },   // extend down
-        { deg: 315, dx: GRID_STEP_X, dy: -GRID_STEP_Y,  label: '↗' },
+        { deg: 180, dx: -GRID_STEP_X, dy: 0,             label: '←' },   // extend left
+        { deg: 270, dx: 0,            dy: -GRID_STEP_Y,  label: '↑' },   // extend up
+        { deg: 45,  dx: GRID_STEP_X,  dy: GRID_STEP_Y,   label: '↘' },   // fork down-right
+        { deg: 315, dx: GRID_STEP_X,  dy: -GRID_STEP_Y,  label: '↗' },   // fork up-right
     ]
 
     branches.forEach(b => {
@@ -582,7 +585,7 @@ const renderBranchHandles = (nodeGroup, node, allNodes) => {
                     .attr('font-family', "'VT323', monospace")
                     .attr('font-size', '12px')
                     .attr('opacity', 0.5)
-                    .text(occupied ? 'interchange' : (b.deg === 0 ? 'extend' : 'fork'))
+                    .text(occupied ? 'interchange' : ([0, 90, 180, 270].includes(b.deg) ? 'extend' : 'fork'))
             })
             .on('mouseleave', () => {
                 handleGroup.selectAll('.ghost-preview').remove()
@@ -592,7 +595,7 @@ const renderBranchHandles = (nodeGroup, node, allNodes) => {
                 emit('create-node', {
                     x: targetX,
                     y: targetY,
-                    lineId: b.deg === 0 ? node.lineId : null, // null = new track
+                    lineId: [0, 90, 180, 270].includes(b.deg) ? node.lineId : null, // cardinal = same line, diagonal = new track
                     afterNodeId: node.id,
                     branchAngle: b.deg,
                     parentNodeId: currentDimensionData.value?.parentNodeId ?? null,