diff --git a/AGENTS.md b/AGENTS.md
index 1ab464b..14db67a 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -177,7 +177,7 @@ No hay un estilo mayoritario. El código histórico está partido:
 - Payload: `[{ product: {id, name, catalogue_images[]}, suppliers: [{ supplier: {...}, organization|null, municipality|null, department|null, country|null }] }]`.
 - **Genérico reutilizable:**
   - `src/components/graph/VisChart.vue`: wrapper de vis-network (props `nodes`, `edges`, `height`, `options`; import `import { DataSet, Network } from 'vis-network/standalone'`; emite `select` con el nodo). **OJO**: nodo con `image: null` → TypeError de vis; omitir la clave `image` si no hay foto
-- **Específico público** (`src/components/provenance/`): builders puros en `provenance-graph.js` (`buildSupplierOrganizationGraph`, `buildTerritoryGraph`, `hasAnySupplier`, `hasAnyTerritory`) y el adaptador vis `provenance-vis.js` (`toVisNodes`, `toVisEdges`, `chartOptions`). **Semántica de certeza**: arista con `certain: true` es continua (inequívoca) y `certain: false` es discontinua (dudosa); con varios proveedores por producto se inserta un nodo `junction:<productId>` (disyunción) con arista sólida hasta él y discontinua hacia cada proveedor; la duda se corta donde los proveedores coinciden (misma organización/municipio/departamento). Los charts (que muestran "próximamente estará disponible" cuando no hay relaciones), `ProvenanceDetailModal.vue` y `ProvenanceSection.vue`
+- **Específico público** (`src/components/provenance/`): builders puros en `provenance-graph.js` (`buildSupplierOrganizationGraph`, `buildTerritoryGraph`, `hasAnySupplier`, `hasAnyTerritory`) y el adaptador vis `provenance-vis.js` (`toVisNodes`, `toVisEdges`, `chartOptions`). **Semántica de certeza**: arista con `certain: true` es continua (inequívoca) y `certain: false` es discontinua (dudosa); con varios proveedores por producto se inserta un nodo `junction:<productId>` (disyunción) con arista sólida hasta él y discontinua hacia cada proveedor; la duda se corta donde los proveedores coinciden (misma organización/municipio/departamento). El gráfico de territorio va solo hasta departamento (sin país, por ahora Colombia). Las aristas se deduplican por par `(from, to)` y si un mismo par repite con distinta certeza gana la duda. Los charts (que muestran "próximamente estará disponible" cuando no hay relaciones), `ProvenanceDetailModal.vue` y `ProvenanceSection.vue`
 - **Admin CRUD** (`src/components/provenance/admin/`): `OrganizationsManagement.vue`, `SuppliersManagement.vue`, `GeographyManagement.vue` (tabs países/departamentos/municipios), `SupplierLinkDialog.vue` (vincula productos↔proveedores, abierto desde `ProductsManagement.vue`). Páginas en `src/pages/admin/{organizations,suppliers,geography}.vue`; rutas en `ADMIN_ROUTES` (`router/index.js`); ítems en `NavBar.vue`
 - **Endpoints provenance**: `/don_confiao/api/organizations/`, `/suppliers/`, `/countries/`, `/departments/`, `/municipalities/` (CRUD); vincular productos con `PATCH /don_confiao/api/products/<id>/` body `{"suppliers": [ids]}`; detalle de producto (con `suppliers`) via `GET /don_confiao/api/products/<id>/`
 - Los tests mockean `vis-network/standalone` (`vi.mock('vis-network/standalone', ...)`) o el propio `VisChart.vue`, y la API con `global.provide: { api }`
diff --git a/src/components/provenance/provenance-graph.js b/src/components/provenance/provenance-graph.js
index 54dd22d..2b149be 100644
--- a/src/components/provenance/provenance-graph.js
+++ b/src/components/provenance/provenance-graph.js
@@ -17,6 +17,7 @@ function makeCollector () {
   const nodes = []
   const edges = []
   const seen = new Map()
+  const edgeSeen = new Map()
   return {
     nodes,
     edges,
@@ -36,7 +37,14 @@ function makeCollector () {
       return seen.get(id)
     },
     addEdge (from, to, certain) {
-      edges.push({ from, to, certain: Boolean(certain) })
+      const key = `${from}\u0000${to}`
+      if (edgeSeen.has(key)) {
+        edgeSeen.get(key).certain = edgeSeen.get(key).certain && Boolean(certain)
+        return
+      }
+      const edge = { from, to, certain: Boolean(certain) }
+      edgeSeen.set(key, edge)
+      edges.push(edge)
     },
   }
 }
@@ -97,7 +105,6 @@ export function buildTerritoryGraph (provenance) {
 
     const municipalityCertain = isCertain(distinctValues(relations.map(rel => rel.municipality)))
     const departmentCertain = isCertain(distinctValues(relations.map(rel => rel.department)))
-    const countryCertain = isCertain(distinctValues(relations.map(rel => rel.country)))
 
     for (const rel of relations) {
       if (!rel.municipality) continue
@@ -110,12 +117,6 @@ export function buildTerritoryGraph (provenance) {
       const department = collector.addNode('department', rel.department)
       collector.addEdge(municipality.id, department.id, departmentCertain)
     }
-    for (const rel of relations) {
-      if (!rel.department || !rel.country) continue
-      const department = collector.addNode('department', rel.department)
-      const country = collector.addNode('country', rel.country)
-      collector.addEdge(department.id, country.id, countryCertain)
-    }
   }
   return { nodes: collector.nodes, edges: collector.edges }
 }
@@ -127,7 +128,7 @@ export function hasAnySupplier (provenance) {
 export function hasAnyTerritory (provenance) {
   return (provenance || []).some(entry =>
     (entry.suppliers || []).some(rel =>
-      rel.municipality || rel.department || rel.country
+      rel.municipality || rel.department
     )
   )
 }
diff --git a/src/components/provenance/provenance-vis.js b/src/components/provenance/provenance-vis.js
index 8e19847..1bfb8f2 100644
--- a/src/components/provenance/provenance-vis.js
+++ b/src/components/provenance/provenance-vis.js
@@ -14,17 +14,49 @@ const COLORS = {
   junction: '#78909c',
 }
 
+const PRODUCT_SPACING = 110
+const COLUMN_X = {
+  product: -240,
+  junction: -120,
+  supplier: 0,
+  organization: 240,
+  municipality: 240,
+  department: 480,
+}
+
 export function toVisNodes (nodes) {
+  const products = nodes.filter(node => node.kind === 'product')
+  const productY = new Map()
+  products.forEach((node, index) => {
+    productY.set(node.entity.id, (index - (products.length - 1) / 2) * PRODUCT_SPACING)
+  })
   return nodes.map(node => {
     const color = COLORS[node.kind] || '#cfd8dc'
     const { image, ...rest } = node
     if (node.kind === 'junction') {
-      return { ...rest, shape: 'dot', color, size: 10, label: '' }
+      return {
+        ...rest,
+        shape: 'dot',
+        color,
+        size: 10,
+        label: '',
+        x: COLUMN_X.junction,
+        y: productY.get(node.entity.id),
+        fixed: { x: true, y: true },
+      }
     }
-    if (image) {
-      return { ...rest, image, shape: 'circularImage', borderWidth: 2 }
+    const base = image
+      ? { ...rest, image, shape: 'circularImage', borderWidth: 2 }
+      : { ...rest, shape: 'dot', color, borderWidth: 2 }
+    if (node.kind === 'product') {
+      return {
+        ...base,
+        x: COLUMN_X.product,
+        y: productY.get(node.entity.id),
+        fixed: { x: true, y: true },
+      }
     }
-    return { ...rest, shape: 'dot', color, borderWidth: 2 }
+    return { ...base, x: COLUMN_X[node.kind], fixed: { x: true, y: false } }
   })
 }
 
diff --git a/tests/unit/components/provenance/ProductSupplierOrganizationChart.spec.js b/tests/unit/components/provenance/ProductSupplierOrganizationChart.spec.js
index 3b5dcfd..8adf0e9 100644
--- a/tests/unit/components/provenance/ProductSupplierOrganizationChart.spec.js
+++ b/tests/unit/components/provenance/ProductSupplierOrganizationChart.spec.js
@@ -139,4 +139,44 @@ describe('ProductSupplierOrganizationChart', () => {
 
     expect(wrapper.findComponent(ProvenanceDetailModal).props('visible')).toBe(false)
   })
+
+  it('alinea los productos en una columna vertical fija y centrada', () => {
+    const provenance = [
+      { product: { id: 1, name: 'Panela' }, suppliers: [{ supplier: { id: 5, name: 'A' } }] },
+      { product: { id: 2, name: 'Arroz' }, suppliers: [{ supplier: { id: 6, name: 'B' } }] },
+      { product: { id: 3, name: 'Queso' }, suppliers: [{ supplier: { id: 7, name: 'C' } }] },
+    ]
+    const wrapper = mountChart({ provenance })
+
+    const products = visChart(wrapper).props('nodes').filter(node => node.kind === 'product')
+    expect(products).toHaveLength(3)
+    expect(new Set(products.map(node => node.x)).size).toBe(1)
+    expect(products.map(node => node.y)).toEqual([-110, 0, 110])
+    products.forEach(node => {
+      expect(node.fixed).toEqual({ x: true, y: true })
+    })
+  })
+
+  it('alinea proveedores y organizaciones en columnas por nivel', () => {
+    const wrapper = mountChart()
+
+    const supplier = visChart(wrapper).props('nodes').find(node => node.id === 'supplier:5')
+    expect(supplier.x).toBe(0)
+    expect(supplier.fixed).toEqual({ x: true, y: false })
+    expect(supplier.y).toBeUndefined()
+
+    const organization = visChart(wrapper).props('nodes').find(node => node.id === 'organization:3')
+    expect(organization.x).toBe(240)
+    expect(organization.fixed).toEqual({ x: true, y: false })
+  })
+
+  it('el punto de disyunción queda a la misma altura que su producto', () => {
+    const wrapper = mountChart({ provenance: provenanceWithTwoSuppliers })
+
+    const junction = visChart(wrapper).props('nodes').find(node => node.id === 'junction:1')
+    const product = visChart(wrapper).props('nodes').find(node => node.id === 'product:1')
+    expect(junction.x).toBe(-120)
+    expect(junction.y).toBe(product.y)
+    expect(junction.fixed).toEqual({ x: true, y: true })
+  })
 })
diff --git a/tests/unit/components/provenance/ProductTerritoryChart.spec.js b/tests/unit/components/provenance/ProductTerritoryChart.spec.js
index 191653c..f2ca526 100644
--- a/tests/unit/components/provenance/ProductTerritoryChart.spec.js
+++ b/tests/unit/components/provenance/ProductTerritoryChart.spec.js
@@ -63,7 +63,7 @@ describe('ProductTerritoryChart', () => {
     vi.clearAllMocks()
   })
 
-  it('renderiza el gráfico con municipio, departamento y país', () => {
+  it('renderiza el gráfico con municipio y departamento, sin país', () => {
     const wrapper = mountChart()
 
     const chart = visChart(wrapper)
@@ -73,7 +73,7 @@ describe('ProductTerritoryChart', () => {
     expect(nodeIds).toContain('supplier:5')
     expect(nodeIds).toContain('municipality:7')
     expect(nodeIds).toContain('department:2')
-    expect(nodeIds).toContain('country:1')
+    expect(nodeIds).not.toContain('country:1')
   })
 
   it('incluye la etiqueta del nodo y el color según el tipo', () => {
@@ -96,7 +96,20 @@ describe('ProductTerritoryChart', () => {
     expect(edges.find(edge => edge.from === 'junction:1' && edge.to === 'supplier:5').dashes).toBe(true)
     expect(edges.find(edge => edge.from === 'supplier:5' && edge.to === 'municipality:7').dashes).toBe(true)
     expect(edges.find(edge => edge.from === 'municipality:7' && edge.to === 'department:2').dashes).toBe(true)
-    expect(edges.find(edge => edge.from === 'department:2' && edge.to === 'country:1').dashes).toBe(false)
+  })
+
+  it('con varios productos del mismo proveedor solo traza una línea al municipio', () => {
+    const provenanceWithRepeatedSupplier = [
+      { product: { id: 1, name: 'Panela' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+      { product: { id: 2, name: 'Arroz' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+      { product: { id: 3, name: 'Queso' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+    ]
+    const wrapper = mountChart({ provenance: provenanceWithRepeatedSupplier })
+
+    const chart = visChart(wrapper)
+    const edges = chart.props('edges')
+    expect(edges.filter(edge => edge.from === 'supplier:5' && edge.to === 'municipality:7')).toHaveLength(1)
+    expect(chart.props('nodes').filter(node => node.id === 'municipality:7')).toHaveLength(1)
   })
 
   it('muestra mensaje de próximamente cuando ningún proveedor tiene territorio', () => {
@@ -121,4 +134,13 @@ describe('ProductTerritoryChart', () => {
     expect(wrapper.findComponent(ProvenanceDetailModal).props('visible')).toBe(true)
     expect(document.body.textContent).toContain('La Mesa')
   })
+
+  it('alinea municipios y departamentos en columnas por nivel', () => {
+    const wrapper = mountChart()
+
+    const nodes = visChart(wrapper).props('nodes')
+    expect(nodes.find(node => node.id === 'supplier:5').x).toBe(0)
+    expect(nodes.find(node => node.id === 'municipality:7').x).toBe(240)
+    expect(nodes.find(node => node.id === 'department:2').x).toBe(480)
+  })
 })
diff --git a/tests/unit/components/provenance/provenance-graph.spec.js b/tests/unit/components/provenance/provenance-graph.spec.js
index 62298b4..90f1465 100644
--- a/tests/unit/components/provenance/provenance-graph.spec.js
+++ b/tests/unit/components/provenance/provenance-graph.spec.js
@@ -87,6 +87,26 @@ describe('hasAnyTerritory', () => {
     const noSuppliers = [{ product: { id: 1, name: 'Panela' }, suppliers: [] }]
     expect(hasAnyTerritory(noSuppliers)).toBe(false)
   })
+
+  it('es true cuando hay municipio aunque el país venga null', () => {
+    const data = [
+      {
+        product: { id: 1, name: 'Panela' },
+        suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: null, country: null }],
+      },
+    ]
+    expect(hasAnyTerritory(data)).toBe(true)
+  })
+
+  it('es false cuando solo hay país', () => {
+    const data = [
+      {
+        product: { id: 1, name: 'Panela' },
+        suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: null, department: null, country: { id: 1, name: 'Colombia' } }],
+      },
+    ]
+    expect(hasAnyTerritory(data)).toBe(false)
+  })
 })
 
 describe('buildSupplierOrganizationGraph', () => {
@@ -146,7 +166,7 @@ describe('buildSupplierOrganizationGraph', () => {
     expect(graph.edges).toEqual([{ from: 'product:1', to: 'supplier:5', certain: true }])
   })
 
-  it('no duplica nodos que se repiten entre productos', () => {
+  it('no duplica nodos ni aristas cuando se repiten entre productos', () => {
     const data = [
       { product: { id: 1, name: 'Panela' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, organization: { id: 3, name: 'Red' } }] },
       { product: { id: 2, name: 'Arroz' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, organization: { id: 3, name: 'Red' } }] },
@@ -155,7 +175,19 @@ describe('buildSupplierOrganizationGraph', () => {
 
     expect(graph.nodes.filter(n => n.id === 'supplier:5')).toHaveLength(1)
     expect(graph.nodes.filter(n => n.id === 'organization:3')).toHaveLength(1)
-    expect(graph.edges).toHaveLength(4)
+    expect(graph.edges.filter(e => e.from === 'supplier:5' && e.to === 'organization:3')).toHaveLength(1)
+    expect(graph.edges).toHaveLength(3)
+  })
+
+  it('si el mismo par de nodos repite con distinta certeza, gana la duda', () => {
+    const data = [
+      { product: { id: 1, name: 'Panela' }, suppliers: [{ supplier: { id: 5, name: 'A' }, organization: { id: 3, name: 'Red' } }] },
+      { product: { id: 2, name: 'Arroz' }, suppliers: [{ supplier: { id: 5, name: 'A' }, organization: { id: 3, name: 'Red' } }, { supplier: { id: 6, name: 'B' }, organization: { id: 4, name: 'Coop' } }] },
+    ]
+    const graph = buildSupplierOrganizationGraph(data)
+
+    expect(graph.edges.filter(e => e.from === 'supplier:5' && e.to === 'organization:3')).toHaveLength(1)
+    expect(edgeOf(graph, 'supplier:5', 'organization:3').certain).toBe(false)
   })
 
   it('no incluye posiciones de layout', () => {
@@ -181,7 +213,25 @@ describe('buildTerritoryGraph', () => {
     expect(edgeOf(graph, 'product:1', 'supplier:5')).toEqual({ from: 'product:1', to: 'supplier:5', certain: true })
     expect(edgeOf(graph, 'supplier:5', 'municipality:7')).toEqual({ from: 'supplier:5', to: 'municipality:7', certain: true })
     expect(edgeOf(graph, 'municipality:7', 'department:2')).toEqual({ from: 'municipality:7', to: 'department:2', certain: true })
-    expect(edgeOf(graph, 'department:2', 'country:1')).toEqual({ from: 'department:2', to: 'country:1', certain: true })
+  })
+
+  it('no incluye nodos ni aristas de país', () => {
+    const graph = buildTerritoryGraph(singleSupplier)
+
+    expect(graph.nodes.map(n => n.id)).not.toContain('country:1')
+    expect(graph.edges.some(edge => edge.from.startsWith('country:') || edge.to.startsWith('country:'))).toBe(false)
+  })
+
+  it('con varios productos del mismo proveedor solo traza una línea hacia el municipio', () => {
+    const data = [
+      { product: { id: 1, name: 'Panela' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+      { product: { id: 2, name: 'Arroz' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+      { product: { id: 3, name: 'Queso' }, suppliers: [{ supplier: { id: 5, name: 'La Mesa' }, municipality: { id: 7, name: 'Santa Bárbara' }, department: { id: 2, name: 'Antioquia' } }] },
+    ]
+    const graph = buildTerritoryGraph(data)
+
+    expect(graph.edges.filter(e => e.from === 'supplier:5' && e.to === 'municipality:7')).toHaveLength(1)
+    expect(graph.nodes.filter(n => n.id === 'municipality:7')).toHaveLength(1)
   })
 
   it('cuando los proveedores comparten municipio, el territorio es cierto desde allí', () => {
@@ -194,7 +244,6 @@ describe('buildTerritoryGraph', () => {
     expect(edgeOf(graph, 'supplier:5', 'municipality:7')).toEqual({ from: 'supplier:5', to: 'municipality:7', certain: true })
     expect(edgeOf(graph, 'supplier:6', 'municipality:7')).toEqual({ from: 'supplier:6', to: 'municipality:7', certain: true })
     expect(edgeOf(graph, 'municipality:7', 'department:2').certain).toBe(true)
-    expect(edgeOf(graph, 'department:2', 'country:1').certain).toBe(true)
   })
 
   it('municipios distintos pero mismo departamento: dudoso hasta el municipio y cierto desde el departamento', () => {
@@ -206,18 +255,15 @@ describe('buildTerritoryGraph', () => {
     expect(edgeOf(graph, 'supplier:6', 'municipality:8').certain).toBe(false)
     expect(edgeOf(graph, 'municipality:7', 'department:2')).toEqual({ from: 'municipality:7', to: 'department:2', certain: true })
     expect(edgeOf(graph, 'municipality:8', 'department:2')).toEqual({ from: 'municipality:8', to: 'department:2', certain: true })
-    expect(edgeOf(graph, 'department:2', 'country:1').certain).toBe(true)
   })
 
-  it('municipios y departamentos distintos mantienen la duda, y el país común es cierto', () => {
+  it('municipios y departamentos distintos mantienen la duda', () => {
     const graph = buildTerritoryGraph(twoSuppliers())
 
     expect(edgeOf(graph, 'supplier:5', 'municipality:7').certain).toBe(false)
     expect(edgeOf(graph, 'municipality:7', 'department:2').certain).toBe(false)
     expect(edgeOf(graph, 'supplier:6', 'municipality:8').certain).toBe(false)
     expect(edgeOf(graph, 'municipality:8', 'department:3').certain).toBe(false)
-    expect(edgeOf(graph, 'department:2', 'country:1')).toEqual({ from: 'department:2', to: 'country:1', certain: true })
-    expect(edgeOf(graph, 'department:3', 'country:1')).toEqual({ from: 'department:3', to: 'country:1', certain: true })
   })
 
   it('no crea nodos de territorio cuando el proveedor no tiene municipio', () => {