test(miss-52): sheet cells without the shared host fail loud

- CampaignCellEditOverlay: dev-mode console.error when a variant=sheet
  cell mounts without CampaignListSheetProvider (prod keeps the
  lazy-mount fallback for resilience; unit tests exercise it, so the
  invariant is development-only).
- sharedSheetHostConventions.unit.spec.ts: any tsx rendering
  <MunicipalityPortfolioCell / <LeadershipStateDeputyRelationCell must
  reference CampaignListSheetProvider — the next chip table cannot
  reintroduce per-cell Drawers by omission.

src/components/campaign/shared/CampaignCellEditOverlay.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useLayoutEffect, useRef, useState, type ReactNode } from 'react'
+import { useEffect, useLayoutEffect, useRef, useState, type ReactNode } from 'react'
 import { createPortal } from 'react-dom'
 
 import { CampaignHoverTooltip } from '@/components/campaign/shared/CampaignHoverTooltip'
@@ -110,6 +110,18 @@ export const CampaignCellEditOverlay = ({
   const sharedSheet = useCampaignListSheet()
   const wasOpenRef = useRef(open)
 
+  // Miss #52: without the provider every opened cell keeps its own Drawer
+  // root. The fallback below stays for prod resilience, but in dev the
+  // missing provider is called out the moment a sheet cell mounts.
+  useEffect(() => {
+    if (variant !== 'sheet' || sharedSheet) return
+    if (process.env.NODE_ENV !== 'development') return
+    console.error(
+      'CampaignCellEditOverlay: variant="sheet" sem CampaignListSheetProvider — ' +
+        'cada célula aberta mantém um Drawer próprio (miss #52). Envolva a lista no provider.',
+    )
+  }, [variant, sharedSheet])
+
   /**
    * The region is mounted from the first open onwards and never unmounted
    * again — a live region has to exist BEFORE its text changes or most screen

tests/unit/sharedSheetHostConventions.unit.spec.ts

@@ -0,0 +1,41 @@
+import { readdirSync, readFileSync } from 'node:fs'
+import { relative, resolve } from 'node:path'
+import { describe, expect, it } from 'vitest'
+
+// Miss #52 (2026-07-30): the municipalities list hydrated ~125 idle Drawer
+// roots (25 rows × 5 sheet controls) and prod tripped React #130 — CSS
+// `display:none` does not remove hydration cost. The fix pattern is ONE
+// shared Drawer per list surface via `CampaignListSheetProvider`, with cell
+// bodies portaled into it. The provider reached the municípios mobile cards
+// and this pass (2026-07-31) the three chip-relation lists (lideranças,
+// dobradinhas, assessores) — this guard keeps the next chip-cell table from
+// mounting sheet overlays providerless.
+describe('shared sheet host for chip-relation cells (miss #52)', () => {
+  const componentRoots = ['src/components', 'src/app'] as const
+  const chipCellUsage = /<MunicipalityPortfolioCell|<LeadershipStateDeputyRelationCell/
+
+  it('wraps every chip-relation table in CampaignListSheetProvider', () => {
+    const offenders: string[] = []
+
+    for (const root of componentRoots) {
+      const files = readdirSync(resolve(process.cwd(), root), {
+        recursive: true,
+        withFileTypes: true,
+      })
+        .filter((entry) => entry.isFile() && entry.name.endsWith('.tsx'))
+        .map((entry) => resolve(entry.parentPath, entry.name))
+
+      for (const file of files) {
+        const source = readFileSync(file, 'utf8')
+        if (!chipCellUsage.test(source)) continue
+        if (source.includes('CampaignListSheetProvider')) continue
+        offenders.push(relative(process.cwd(), file))
+      }
+    }
+
+    expect(
+      offenders,
+      'chip-relation cells open sheet overlays on coarse pointers — wrap the table in CampaignListSheetProvider (one shared Drawer per list)',
+    ).toEqual([])
+  })
+})