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>

packages/db/src/holiday-calendar-seed-data.ts

@@ -1,4 +1,4 @@
-import { getPublicHolidays, toIsoDate } from "@capakraken/shared";
+import { getPublicHolidays, toIsoDate } from "@nexus/shared";
 
 export type HolidayCalendarSeedScope = "COUNTRY" | "STATE" | "CITY";
 
@@ -62,10 +62,15 @@ function computeEasterSunday(year: number): Date {
   return dateUtc(year, month, day);
 }
 
-function nthWeekdayOfMonth(year: number, month: number, weekday: number, occurrence: number): string {
+function nthWeekdayOfMonth(
+  year: number,
+  month: number,
+  weekday: number,
+  occurrence: number,
+): string {
   const firstDay = dateUtc(year, month, 1);
   const delta = (weekday - firstDay.getUTCDay() + 7) % 7;
-  const day = 1 + delta + ((occurrence - 1) * 7);
+  const day = 1 + delta + (occurrence - 1) * 7;
   return toIsoDate(dateUtc(year, month, day));
 }
 
@@ -90,7 +95,10 @@ function observedUsFixedHoliday(year: number, month: number, day: number): strin
   return toIsoDate(holiday);
 }
 
-function buildEntries(years: number[], definitions: SimpleHolidayDefinition[]): HolidayCalendarSeedEntry[] {
+function buildEntries(
+  years: number[],
+  definitions: SimpleHolidayDefinition[],
+): HolidayCalendarSeedEntry[] {
   const entries = new Map<string, HolidayCalendarSeedEntry>();
 
   for (const year of years) {
@@ -139,7 +147,10 @@ function buildSpanishCountryEntries(years: number[]): HolidayCalendarSeedEntry[]
   return buildEntries(years, [
     { name: "Ano Nuevo", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 1)) },
     { name: "Epifania del Senor", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 6)) },
-    { name: "Viernes Santo", resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)) },
+    {
+      name: "Viernes Santo",
+      resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)),
+    },
     { name: "Fiesta del Trabajo", resolveDate: (year) => toIsoDate(dateUtc(year, 5, 1)) },
     { name: "Asuncion de la Virgen", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 15)) },
     { name: "Fiesta Nacional de Espana", resolveDate: (year) => toIsoDate(dateUtc(year, 10, 12)) },
@@ -153,7 +164,10 @@ function buildSpanishCountryEntries(years: number[]): HolidayCalendarSeedEntry[]
 function buildIndianCountryEntries(years: number[]): HolidayCalendarSeedEntry[] {
   return buildEntries(years, [
     { name: "Republic Day", resolveDate: (year) => toIsoDate(dateUtc(year, 1, 26)) },
-    { name: "Good Friday", resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)) },
+    {
+      name: "Good Friday",
+      resolveDate: (year) => toIsoDate(addDays(computeEasterSunday(year), -2)),
+    },
     { name: "Independence Day", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 15)) },
     { name: "Gandhi Jayanti", resolveDate: (year) => toIsoDate(dateUtc(year, 10, 2)) },
   ]);
@@ -175,7 +189,9 @@ function normalizeCountryCodes(countryCodes: string[]): Set<string> {
   return new Set(countryCodes.map((countryCode) => countryCode.trim().toUpperCase()));
 }
 
-function normalizeCityLookup(availableCitiesByCountry: Record<string, string[]>): Map<string, Set<string>> {
+function normalizeCityLookup(
+  availableCitiesByCountry: Record<string, string[]>,
+): Map<string, Set<string>> {
   const lookup = new Map<string, Set<string>>();
 
   for (const [countryCode, cityNames] of Object.entries(availableCitiesByCountry)) {
@@ -185,7 +201,11 @@ function normalizeCityLookup(availableCitiesByCountry: Record<string, string[]>)
   return lookup;
 }
 
-function hasCity(cityLookup: Map<string, Set<string>>, countryCode: string, cityName: string): boolean {
+function hasCity(
+  cityLookup: Map<string, Set<string>>,
+  countryCode: string,
+  cityName: string,
+): boolean {
   return cityLookup.get(countryCode)?.has(cityName) ?? false;
 }
 
@@ -204,7 +224,10 @@ function germanStateDisplayName(stateCode: string): string {
   }
 }
 
-function buildCityEntries(years: number[], definitions: SimpleHolidayDefinition[]): HolidayCalendarSeedEntry[] {
+function buildCityEntries(
+  years: number[],
+  definitions: SimpleHolidayDefinition[],
+): HolidayCalendarSeedEntry[] {
   return buildEntries(years, definitions);
 }
 
@@ -253,7 +276,10 @@ export function buildHolidayCalendarSeedDefinitions(
         cityName: "Augsburg",
         priority: CITY_PRIORITY,
         entries: buildCityEntries(context.years, [
-          { name: "Augsburger Friedensfest", resolveDate: (year) => toIsoDate(dateUtc(year, 8, 8)) },
+          {
+            name: "Augsburger Friedensfest",
+            resolveDate: (year) => toIsoDate(dateUtc(year, 8, 8)),
+          },
         ]),
       });
     }
@@ -277,7 +303,10 @@ export function buildHolidayCalendarSeedDefinitions(
         priority: CITY_PRIORITY,
         entries: buildEntries(context.years, [
           { name: "San Isidro", resolveDate: (year) => toIsoDate(dateUtc(year, 5, 15)) },
-          { name: "Nuestra Senora de la Almudena", resolveDate: (year) => toIsoDate(dateUtc(year, 11, 9)) },
+          {
+            name: "Nuestra Senora de la Almudena",
+            resolveDate: (year) => toIsoDate(dateUtc(year, 11, 9)),
+          },
         ]),
       });
     }