rename(phase 1): CapaKraken → Nexus across code, UI, docs, CI

- @capakraken/* → @nexus/* across 12 packages (root + 11 workspaces),
  1551 import lines migrated via codemod
- User-visible brand strings renamed (emails, page titles, PWA
  manifest, mobile header, MFA backup-codes header, tooltips, signin
  page, invite page, weekly digest, install prompt)
- TOTP issuer "CapaKraken" → "Nexus" (existing secrets still valid;
  re-enrollment relabels them in users' authenticator apps)
- Function rename: assertCapaKrakenDbTarget → assertNexusDbTarget
- LocalStorage migration shim in apps/web/src/app/layout.tsx copies
  capakraken_* → nexus_* on first load (guarded by nexus_migrated_v1
  sentinel; runs once per browser, then never again)
- Service-worker cache name capakraken-v2 → nexus-v2 with one-time
  caches.delete('capakraken-v2') from the same shim
- Email-domain fixtures @capakraken.{dev,app} → @nexus.{dev,app} in
  seed data, e2e specs, SMTP default fallback
- Dockerfile.dev / Dockerfile.prod / all .github/workflows/*.yml
  pnpm --filter @capakraken/* → @nexus/*
- README, CLAUDE.md, LEARNINGS.md, all docs/*.md, .env.example,
  tooling/deploy/.env.production.example brand sweep

Phase 1 deliberately leaves untouched (handled in Phase 3 cutover):
- PostgreSQL DB name "capakraken" and POSTGRES_USER "capakraken"
- Volume names capakraken_pgdata etc.
- Compose project name "capakraken" / "capakraken-prod"
- db-target-guard default expectedDatabase
- env-var CAPAKRAKEN_EXPECTED_DB_NAME
- Container DNS names in docker-compose.ci.yml

Quality gates green: pnpm typecheck (7/7), pnpm test:unit (7/7),
pnpm lint (0 errors), check:exports/imports/architecture all pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/web/src/components/allocations/ConflictWarningPanel.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useState } from "react";
-import type { AllocationConflictCheckResult } from "@capakraken/shared";
+import type { AllocationConflictCheckResult } from "@nexus/shared";
 
 const INITIAL_ROWS_SHOWN = 5;
 
@@ -43,12 +43,12 @@ export function ConflictWarningPanel({
         <div className="rounded-lg border border-amber-300 dark:border-amber-700 bg-amber-50 dark:bg-amber-950/30 p-4 text-sm">
           <p className="font-semibold text-amber-800 dark:text-amber-300">
             ⚠ Overbooking on {result.overbooking.totalConflictDays} day
-            {result.overbooking.totalConflictDays !== 1 ? "s" : ""}
-            {" "}(up to {result.overbooking.maxOverbookPercent}% over capacity)
+            {result.overbooking.totalConflictDays !== 1 ? "s" : ""} (up to{" "}
+            {result.overbooking.maxOverbookPercent}% over capacity)
           </p>
           <p className="mt-1 text-amber-700 dark:text-amber-400">
-            The resource already has allocations that exceed their daily capacity on the following days.
-            You can still save — check the box below to confirm.
+            The resource already has allocations that exceed their daily capacity on the following
+            days. You can still save — check the box below to confirm.
           </p>
 
           {/* Day-by-day table */}
@@ -65,7 +65,10 @@ export function ConflictWarningPanel({
               </thead>
               <tbody>
                 {visibleDays.map((day) => (
-                  <tr key={day.date} className="border-b border-amber-100 dark:border-amber-900/50 last:border-0">
+                  <tr
+                    key={day.date}
+                    className="border-b border-amber-100 dark:border-amber-900/50 last:border-0"
+                  >
                     <td className="py-1 pr-4">{day.date}</td>
                     <td className="py-1 pr-4 text-right">{day.availableHours}h</td>
                     <td className="py-1 pr-4 text-right">{day.existingHours}h</td>
@@ -85,7 +88,9 @@ export function ConflictWarningPanel({
               onClick={() => setShowAllDays((v) => !v)}
               className="mt-2 text-xs font-medium text-amber-700 dark:text-amber-400 underline underline-offset-2"
             >
-              {showAllDays ? "Show less" : `Show ${hiddenCount} more day${hiddenCount !== 1 ? "s" : ""}…`}
+              {showAllDays
+                ? "Show less"
+                : `Show ${hiddenCount} more day${hiddenCount !== 1 ? "s" : ""}…`}
             </button>
           )}
 
@@ -115,11 +120,18 @@ export function ConflictWarningPanel({
           </p>
           <ul className="mt-2 space-y-1">
             {result.vacationOverlap.map((v, i) => (
-              <li key={i} className="flex items-center gap-2 text-xs text-sky-700 dark:text-sky-400">
+              <li
+                key={i}
+                className="flex items-center gap-2 text-xs text-sky-700 dark:text-sky-400"
+              >
                 <span className="inline-block h-1.5 w-1.5 shrink-0 rounded-full bg-sky-400" />
-                <span className="font-medium capitalize">{v.type.replace(/_/g, " ").toLowerCase()}</span>
+                <span className="font-medium capitalize">
+                  {v.type.replace(/_/g, " ").toLowerCase()}
+                </span>
                 {v.isHalfDay && <span className="text-sky-500">(half-day)</span>}
-                <span>{v.startDate === v.endDate ? v.startDate : `${v.startDate} – ${v.endDate}`}</span>
+                <span>
+                  {v.startDate === v.endDate ? v.startDate : `${v.startDate} – ${v.endDate}`}
+                </span>
               </li>
             ))}
           </ul>