Sprint 4 — Etapa 7B completada.

src/auth/SupabaseAuthService.ts

@@ -5,7 +5,12 @@ export class SupabaseAuthService implements AuthService {
   async signInWithGoogle(): Promise<void> {
     const { error } = await supabase.auth.signInWithOAuth({
       provider: 'google',
-      options: { redirectTo: window.location.origin },
+      options: {
+        redirectTo: window.location.origin,
+        queryParams: {
+          prompt: 'select_account', // fuerza el selector de cuentas de Google, incluso con sesión activa
+        },
+      },
     })
     if (error) throw error
   }

src/features/resources/ResourceCatalogPage.tsx

@@ -1,20 +1,27 @@
 import { useEffect, useState } from 'react'
-import { Users2, Search, Plus, Pencil, Trash2 } from 'lucide-react'
+import { useNavigate, useSearch } from '@tanstack/react-router'
+import { Users2, Search, Plus, Pencil, Trash2, ArrowLeft, CornerUpLeft } from 'lucide-react'
 import { AppHeader } from '@/components/AppHeader'
 import { Input } from '@/components/ui/input'
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'
 import { Table, TableHeader, TableBody, TableRow, TableHead, TableCell } from '@/components/ui/table'
+import { Tooltip, TooltipTrigger, TooltipContent } from '@/components/ui/tooltip'
 import { useAuth } from '@/auth/AuthContext'
 import { supabaseResourceRepo, type ResourceWithCreator } from '@/persistence/supabase/resource-repo'
-import { formatCurrency } from '@/lib/format'
+import { supabaseProcessRepo } from '@/persistence/supabase/process-repo'
+import { formatCostPerHour } from '@/lib/format'
 import { RESOURCE_TYPE_LABELS, RESOURCE_TYPE_STYLES, ResourceTypeAvatar } from './resource-display'
 import { ResourceFormSheet } from './ResourceFormSheet'
 import type { Resource, ResourceType } from '@/domain/types'
 
 export function ResourceCatalogPage() {
   const { user } = useAuth()
+  const navigate = useNavigate()
+  const search_ = useSearch({ from: '/recursos' })
+  const fromProcess = (search_ as { fromProcess?: string }).fromProcess
+  const [fromProcessName, setFromProcessName] = useState<string | null>(null)
   const [resources, setResources] = useState<ResourceWithCreator[]>([])
   const [isLoading, setIsLoading] = useState(true)
   const [search, setSearch] = useState('')
@@ -24,6 +31,15 @@ export function ResourceCatalogPage() {
   const [deleteError, setDeleteError] = useState<string | null>(null)
   const [confirmingDeleteId, setConfirmingDeleteId] = useState<string | null>(null)
 
+  useEffect(() => {
+    if (!fromProcess) return
+    supabaseProcessRepo.getById(fromProcess).then((p) => setFromProcessName(p?.name ?? null))
+  }, [fromProcess])
+
+  function backToProcess() {
+    if (fromProcess) navigate({ to: '/workspace/$processId', params: { processId: fromProcess } })
+  }
+
   async function load() {
     setIsLoading(true)
     try {
@@ -92,6 +108,31 @@ export function ResourceCatalogPage() {
           </Button>
         </div>
 
+        {fromProcess && (
+          <div
+            className="flex items-center justify-between gap-3 mb-4 px-4 py-3 rounded-lg"
+            style={{ background: '#FEF3E7', borderLeft: '3px solid #F59845' }}
+          >
+            <div className="flex items-center gap-3">
+              <Button variant="ghost" size="icon" className="h-7 w-7 -ml-1" onClick={backToProcess}>
+                <ArrowLeft className="h-4 w-4" />
+              </Button>
+              <div>
+                <p className="text-[13px] font-medium">
+                  Estás viendo el catálogo desde el proceso {fromProcessName ? `"${fromProcessName}"` : ''}
+                </p>
+                <p className="text-[12px] text-muted-foreground">
+                  Seleccioná un recurso y usalo en una actividad al volver al workspace.
+                </p>
+              </div>
+            </div>
+            <Button variant="outline" size="sm" className="gap-1.5 shrink-0" onClick={backToProcess}>
+              <ArrowLeft className="h-3.5 w-3.5" />
+              Volver al proceso
+            </Button>
+          </div>
+        )}
+
         {deleteError && (
           <div className="mb-4 px-3 py-2 rounded-lg text-[12px] border border-destructive/30 bg-destructive/10 text-destructive">
             {deleteError}
@@ -164,7 +205,7 @@ export function ResourceCatalogPage() {
                       {RESOURCE_TYPE_LABELS[resource.type]}
                     </Badge>
                   </TableCell>
-                  <TableCell className="font-mono text-[13px]">{formatCurrency(resource.costPerHour)}</TableCell>
+                  <TableCell className="font-mono text-[13px]">{formatCostPerHour(resource.costPerHour)}</TableCell>
                   <TableCell className="text-[13px] text-muted-foreground">{resource.creatorName}</TableCell>
                   <TableCell className="text-right">
                     {confirmingDeleteId === resource.id ? (
@@ -179,6 +220,18 @@ export function ResourceCatalogPage() {
                       </div>
                     ) : (
                       <div className="flex items-center justify-end gap-1">
+                        {fromProcess && (
+                          <Tooltip>
+                            <TooltipTrigger asChild>
+                              <Button variant="ghost" size="icon" className="h-7 w-7 text-muted-foreground hover:text-foreground" onClick={backToProcess}>
+                                <CornerUpLeft className="h-3.5 w-3.5" />
+                              </Button>
+                            </TooltipTrigger>
+                            <TooltipContent side="top" className="max-w-48 text-xs">
+                              Volver al workspace para asignar este recurso a una actividad
+                            </TooltipContent>
+                          </Tooltip>
+                        )}
                         <Button variant="ghost" size="icon" className="h-7 w-7 text-muted-foreground hover:text-foreground" onClick={() => startEdit(resource)}>
                           <Pencil className="h-3.5 w-3.5" />
                         </Button>

src/features/workspace/ActivityPanel.tsx

@@ -11,7 +11,7 @@ import { Switch } from '@/components/ui/switch'
 import { Separator } from '@/components/ui/separator'
 import { useProcessStore } from '@/store/process-store'
 import { useAuth } from '@/auth/AuthContext'
-import { formatCurrency } from '@/lib/format'
+import { formatCurrency, formatCostPerHour } from '@/lib/format'
 import type { Activity } from '@/domain/types'
 
 interface ActivityPanelProps {
@@ -254,7 +254,7 @@ export function ActivityPanel({ selectedElementId }: ActivityPanelProps) {
                     <div className="flex items-center justify-between">
                       <div>
                         <p className="text-xs font-medium text-slate-700">{resource.name}</p>
-                        <p className="text-xs text-slate-400 font-mono">{formatCurrency(resource.costPerHour)}/h</p>
+                        <p className="text-xs text-slate-400 font-mono">{formatCostPerHour(resource.costPerHour)}/h</p>
                       </div>
                       <Button
                         variant="ghost"
@@ -318,7 +318,7 @@ export function ActivityPanel({ selectedElementId }: ActivityPanelProps) {
               <SelectContent>
                 {availableResources.map((r) => (
                   <SelectItem key={r.id} value={r.id} className="text-xs">
-                    {r.name} — {formatCurrency(r.costPerHour)}/h
+                    {r.name} — {formatCostPerHour(r.costPerHour)}/h
                   </SelectItem>
                 ))}
               </SelectContent>

src/features/workspace/ResourcesPanel.tsx

@@ -5,13 +5,13 @@ import { Button } from '@/components/ui/button'
 import { ScrollArea } from '@/components/ui/scroll-area'
 import { useProcessStore } from '@/store/process-store'
 import { useAuth } from '@/auth/AuthContext'
-import { formatCurrency } from '@/lib/format'
+import { formatCostPerHour } from '@/lib/format'
 import { RESOURCE_TYPE_LABELS, ResourceTypeAvatar } from '@/features/resources/resource-display'
 import { ResourceFormSheet } from '@/features/resources/ResourceFormSheet'
 import type { Resource } from '@/domain/types'
 
 export function ResourcesPanel() {
-  const { activities, resources, addResource } = useProcessStore()
+  const { currentProcess, activities, resources, addResource } = useProcessStore()
   const { user } = useAuth()
   const navigate = useNavigate()
   const [sheetOpen, setSheetOpen] = useState(false)
@@ -65,7 +65,7 @@ export function ResourcesPanel() {
                   <div className="min-w-0 flex-1">
                     <div className="flex items-center justify-between gap-2">
                       <p className="text-xs font-medium text-slate-800 truncate">{resource.name}</p>
-                      <p className="text-xs text-slate-500 font-mono shrink-0">{formatCurrency(resource.costPerHour)}/h</p>
+                      <p className="text-xs text-slate-500 font-mono shrink-0">{formatCostPerHour(resource.costPerHour)}/h</p>
                     </div>
                     <p className="text-[11px] text-slate-400 mt-0.5">
                       {RESOURCE_TYPE_LABELS[resource.type]} · {usageCount(resource.id)} actividad{usageCount(resource.id) !== 1 ? 'es' : ''}
@@ -84,7 +84,10 @@ export function ResourcesPanel() {
         <Button
           variant="outline"
           className="w-full h-8 text-xs gap-1.5"
-          onClick={() => navigate({ to: '/recursos' })}
+          onClick={() => navigate({
+            to: '/recursos',
+            search: currentProcess ? { fromProcess: currentProcess.id } : undefined,
+          })}
         >
           <ExternalLink className="h-3.5 w-3.5" />
           Ver catálogo completo

src/lib/format.ts

@@ -7,6 +7,23 @@ export function formatCurrency(amount: number, currency = 'USD'): string {
   }).format(amount)
 }
 
+// Precisión dinámica para costo/hora de recursos: evita que valores chicos
+// (ej. licencias cloud a $0.037/h) se redondeen a $0.04 perdiendo la magnitud real.
+export function formatCostPerHour(value: number, currency = 'USD'): string {
+  const symbol = currency === 'USD' ? '$' : currency
+  if (value === 0) return `${symbol}0`
+
+  let decimals: number
+  if (value >= 100) decimals = 0
+  else if (value >= 10) decimals = 1
+  else if (value >= 1) decimals = 2
+  else if (value >= 0.1) decimals = 3
+  else decimals = 4
+
+  // parseFloat recorta ceros sobrantes: toFixed(4) de 0.037 da "0.0370", queremos "0.037"
+  return `${symbol}${parseFloat(value.toFixed(decimals))}`
+}
+
 export function formatNumber(n: number, decimals = 1): string {
   return new Intl.NumberFormat('es-PY', {
     minimumFractionDigits: decimals,