v0.250.0: i18n slice 1 release C — the language switch on every dashboard page (R-556)

- addLanguageData: the v0.247.0 hide condition (switch only on non-Hungarian pages or with ?lang=) is
  deleted; every template is converted, so the offer no longer leads to a half-English page.
- 89 layout parity fixtures re-captured; each equals its predecessor plus exactly one switch form after
  the version span (checked byte-for-byte, 89 of 89). The 17 standalone fixtures are unchanged.
- TestLanguageSwitch_EndToEnd: a Hungarian household with no ?lang= sees the form (red-proofed by
  restoring the condition: this test and 89 parity cases fail).
- CHANGELOG v0.250.0, README §18, CONTEXT.

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

CHANGELOG.md

@@ -1,3 +1,39 @@
+## v0.250.0 — Every dashboard page in English; the language switch shown to every household (2026-09-17, R-556 release C)
+
+**MinAgent: 0.131.0** (unchanged). **No hub release needed.** **A Hungarian household sees one new thing:
+a „Magyar / English" switch in the sidebar footer.** Everything else in Hungarian is byte-identical.
+
+- **Converted (608 markers):** `storage` (162), `storage_network` (70), `storage_init` (42),
+  `storage_attach` (27), `sharing` (74), `login` (9), `claim` (21), `launcher_shared` (4),
+  `launcher_share_password` (6), `catchall` (4), `debug` (189). All 31 slice-1 templates are done; the
+  English gap is 0.
+- **Parity:** 24 fixture states captured from the UNCONVERTED templates (`0555091`). Those cases had
+  invented page titles; they now carry the handlers' real titles and the 12 affected fixtures were
+  re-captured from `0555091` (diff: the `<title>` line, and the nav highlight on the two drive wizards).
+- **Sign-in, claim, guest share (both), catch-all follow the language** through `executeTemplateLang`
+  (no session CSRF, no escrow reminder). `renderLogin` takes the request. Tests:
+  `TestDirectRenderHandlersFollowLanguage` (the real routes, en and hu), `TestI18nDirectRenderPagesHaveNoAdminChrome`
+  (escrow reminder genuinely due; absent from the page data of all six pages and from the guest page in both languages).
+- **The switch for everyone:** the hide condition in `addLanguageData` is deleted. 89 layout fixtures
+  re-captured; each differs from its predecessor by exactly one inserted switch form placed after the
+  version span (89 of 89 byte-for-byte after removing the form); the 17 standalone fixtures are unchanged.
+  `TestLanguageSwitch_EndToEnd` now asserts a Hungarian household with no `?lang=` sees the form.
+- **Titles:** `TitleKey` for storage, network storage, both drive wizards, sharing.
+  `TestHandlerTitleKeysMatchHungarianTitle` pins every handler's Hungarian title literal to its hu.json value.
+- By-eye review found six ASCII-only Hungarian JS fragments the extractor missed („, majd a(z)",
+  „FIGYELEM:", „jelenlegi:", „mp", „p", „ db"); converted by hand. No test would have caught them on the
+  English page (row filed).
+- `HU_FORMAL_CEILING` 12 → 16 (R-516) — and the stem list sees only 4 of at least 22 formal forms on these pages (R-516 extended).
+- `r400_debug_routes_test.go` and `debug_route_gate.py` still read `debug.html` raw: correct, they match
+  addresses and identifiers, and the bundles hold no `/api/` string (measured 0).
+
+**Red-proofs** (`felhom.eu/documentation/audits/i18n-slice1-2026-09-17/C/redproofs.txt`): parity (one letter of
+`sharing.megosztott_mappak` → 6 sharing cases), English page (`storage.eleresi_ut` removed → 2 cases),
+marker coverage (a marker in an unrendered branch), title keys (reworded hu value; deleted handler line),
+direct routes (all five back on `s.tmpl` → five English rows fail), no admin chrome (`addEscrowBanner`
+added to `executeTemplateLang` → fails per page), the switch (hide condition restored → end-to-end test
+and 89 parity cases fail).
+
 ## v0.249.0 — English for the backup pages, Hungarian byte-identical (2026-09-17, R-556 release B)
 
 **MinAgent: 0.131.0** (unchanged). **No hub release needed.** Nothing changes for a Hungarian household.