Remove all database dependencies and simplify application

BREAKING CHANGE: Remove all data analysis features

This commit removes all database-dependent functionality and simplifies
the application to focus on authentication and user management only.

Changes:
- Remove all /api/data and /api/metadata server endpoints
- Remove Supabase configuration from nuxt.config.ts and .env.example
- Remove @supabase/supabase-js dependency from package.json
- Delete data analysis pages: explorer, metadatos, rawExplorer, panorama,
  comparativa-cosechas, informe-ingresos
- Simplify sidebar navigation to show only "Inicio"
- Update home page to focus on authentication and profile management
- Remove "Supabase" and "Solo lectura" badges from navbar
- Keep only auth-related API endpoints: /api/auth/status and /api/auth/check-group

The application now serves as an authentication-protected portal with:
- Authentik SSO integration
- User profile management
- Settings and notifications pages (coming soon)
- No database or data analysis features

nuxt4-app/server/api/data/[table]/[...segment].get.ts

@@ -1,22 +0,0 @@
-import { parseQuerySegment } from '../../../services/query-parser'
-import { fetchTableData, fetchTableRecord } from '../../../services/table-service'
-
-export default defineEventHandler(async (event) => {
-  const table = event.context.params?.table
-  const segmentParam = event.context.params?.segment
-
-  if (!table || !segmentParam) {
-    throw createError({ statusCode: 400, statusMessage: 'Tabla o parámetro no especificados' })
-  }
-
-  const values = Array.isArray(segmentParam) ? segmentParam : [segmentParam]
-  const target = values[0]
-
-  const parsedQuery = parseQuerySegment(target)
-
-  if (parsedQuery) {
-    return await fetchTableData(table, { parsedQuery })
-  }
-
-  return await fetchTableRecord(table, target)
-})

nuxt4-app/server/api/data/[table]/index.get.ts

@@ -1,30 +0,0 @@
-import { parseQuerySegment } from '../../../services/query-parser'
-import { fetchTableData } from '../../../services/table-service'
-
-export default defineEventHandler(async (event) => {
-  const table = event.context.params?.table
-
-  if (!table) {
-    throw createError({ statusCode: 400, statusMessage: 'Tabla no especificada' })
-  }
-
-  const query = getQuery(event)
-  const limitValue = Number.parseInt((query.limit as string) ?? '', 10)
-  const limit = Number.isFinite(limitValue) ? Math.min(Math.max(limitValue, 1), 500) : undefined
-
-  const offsetValue = Number.parseInt((query.offset as string) ?? '', 10)
-  const offset = Number.isFinite(offsetValue) ? Math.max(offsetValue, 0) : undefined
-
-  const parsedQuery = parseQuerySegment(query.query as string | undefined)
-
-  return await fetchTableData(table, {
-    parsedQuery,
-    limit,
-    offset,
-    filters: {
-      id: (query.id as string) || undefined,
-      createdFrom: (query.created_from as string) || undefined,
-      createdTo: (query.created_to as string) || undefined
-    }
-  })
-})

nuxt4-app/server/api/data/index.get.ts

@@ -1,9 +0,0 @@
-import { fetchAllData } from '../../services/table-service'
-
-export default defineEventHandler(async (event) => {
-  const query = getQuery(event)
-  const requestedLimit = Number.parseInt((query.limit as string) ?? '', 10)
-  const limit = Number.isFinite(requestedLimit) ? Math.min(Math.max(requestedLimit, 1), 100) : 25
-
-  return await fetchAllData(limit)
-})

nuxt4-app/server/api/metadata/[table]/[id].get.ts

@@ -1,12 +0,0 @@
-import { fetchTableRecordMetadata } from '../../../services/table-service'
-
-export default defineEventHandler(async (event) => {
-  const table = event.context.params?.table
-  const id = event.context.params?.id
-
-  if (!table || !id) {
-    throw createError({ statusCode: 400, statusMessage: 'Tabla o id no especificados' })
-  }
-
-  return await fetchTableRecordMetadata(table, id)
-})

nuxt4-app/server/api/metadata/[table]/index.get.ts

@@ -1,15 +0,0 @@
-import { parseQuerySegment } from '../../../services/query-parser'
-import { fetchTableMetadata } from '../../../services/table-service'
-
-export default defineEventHandler(async (event) => {
-  const table = event.context.params?.table
-
-  if (!table) {
-    throw createError({ statusCode: 400, statusMessage: 'Tabla no especificada' })
-  }
-
-  const query = getQuery(event)
-  const parsedQuery = parseQuerySegment(query.query as string | undefined)
-
-  return await fetchTableMetadata(table, { parsedQuery })
-})

nuxt4-app/server/api/metadata/index.get.ts

@@ -1,5 +0,0 @@
-import { fetchAllTablesMetadata } from '../../services/table-service'
-
-export default defineEventHandler(async () => {
-  return await fetchAllTablesMetadata()
-})