v0.248.0: i18n slice 1 release A — apps and settings in English, Hungarian byte-identical (R-556)

Ten pages converted against fixtures captured from unconverted templates (6be55a0); marker
coverage test; English page mask narrowed; English retrieval-promise stems; common keys;
title keys and infraMeta from the bundle; old wording tests read the Hungarian expansion.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

REUSE.md

@@ -231,6 +231,7 @@
 | `getBudapestLocation` | controller/internal/scheduler/scheduler.go | `() *time.Location` | Local-time math | web has its own `getTimezone` (§6); quiesce has its own `budapestLocation` (window gate) — 3rd copy, see §6 |
 | `Server.templateFuncMap` | controller/internal/web/funcmap.go | template.FuncMap | ALL template functions | `stateColor` outputs v2 suffixes `run/progress/warn/neutral/off`; stopped = NEUTRAL not red (operator-approved); `stateLabel` copy is frozen byte-identical (unit-tested) |
 | `i18n.Bundle` (`Shared` / `Msg` / `Plural` / `Expand`) | controller/internal/i18n/i18n.go | `Msg(lang, key) string` | ALL customer copy that has been converted (v0.247.0) | hu.json is authoritative; a key missing in en shows Hungarian (counted), never blank; `Expand` runs BEFORE template parse — never add a runtime `T` func (escaping would change Hungarian bytes). A template edit to converted copy goes in hu.json + en.json, then `TestI18nParity` must still pass |
+| `huTemplateSource` (test) | controller/internal/web/i18n_wiring_test.go | `(name) ([]byte, error)` | A test that asserts a template's Hungarian WORDING | Reads the expansion, not the raw file — since slice 1 the wording lives in hu.json. Never use `templateFS.ReadFile` for a wording assertion |
 | `Server.langFor` / `templatesFor` / `addLanguageData` | controller/internal/web/server.go + i18n_web.go | request → lang → template set | Rendering a page in the household's language | Only `executeTemplate` is language-aware; `s.tmpl` is the Hungarian set; Go-side titles via `data["TitleKey"]` |
 | `timeAgoStr` | controller/internal/web/funcmap.go | `(s RFC3339 string) string` | Ago-format for STRING timestamps | Exists because `timeAgo(time.Time)` 500'd on strings (v0.93 bug) |
 | `Server.baseData` / `executeTemplate` | controller/internal/web/handlers.go + server.go | page-data plumbing | New pages | baseData injects nav/alerts/version; templates must pass `controller/scripts/template_id_gate.py` + `controller/scripts/emoji_gate.py` |