docs: record i18n batch 3 (routing/Sasquatch/labels/dates) + remaining batch 4

AGENTS.md

@@ -1756,20 +1756,50 @@ similar are internal endpoints/hook names, not credits — leave them.)
   chain) fails the build if any literal `t('…')` key is missing from `en` OR `es`,
   or if `en`/`es` drift. Dynamic template keys (`t(\`ns.${x}\`)`) are NOT checked —
   keep those few in sync by hand.
-- **Coverage (2026-10-02, batches 1–2 done):** **~5,770 keys** (EN=ES) and ~180
+- **Coverage (2026-10-02, batches 1–3 done):** **~6,460 keys** (EN=ES) and ~230
   files wired. Namespaces: batch 1 — `mapUi`, `spotUi`, `marketUi`, `labUi`;
   batch 2 — `nav` (header/More/burger labels) + `chromeUi` (footer, toolbar
   widgets, spot-type labels), `placesUi` (events/shops/tours/food), `socialUi`
   (crews/DMs/notifications/collectives), `settingsUi` (settings/auth/signup/
   onboarding/profile/legal), `walletUi` (wallet/Cashu, stash, mints, app shop,
-  newsletter, community stats, leaderboards, profile page).
-- **Still to translate (batch 3):** `RouteDialog`/`StopDepartures`/`TripItineraryCard`
-  (routing UI), the Sasquatch panel/dialogs (`SasquatchGuide`, `SasquatchProDialog`,
-  `SasquatchActionCard`, `SasquatchAiStatusCard`), `AddToCollectionDialog` edge
-  copy, `SplashScreen`/`LazyMount`, and **shared data-module labels** that live
-  outside components (`SPOT_TYPE_LABELS`/`SPOT_CATEGORIES` in `src/lib/types.ts`,
-  `src/lib/skateTags.ts`, `src/lib/spotStatus.ts`, `src/lib/sortOptions.ts`).
-  **Dates & relative times** are still English (no localized date layer yet).
+  newsletter, community stats, leaderboards, profile page); **batch 3** — see
+  below.
+- **Batch 3 (2026-10-02) — done.** Its namespaces live in **fragment files under
+  `src/i18n/batch3/`**, spread into `en`/`es` via `batch3/index.ts`
+  (`export default { ...en, ...batch3En }`), so **parallel translation passes
+  never edit the big `en.ts`/`es.ts` literals** — add keys to the fragment, not
+  the literal.
+  - `routeUi.*` — `RouteDialog` (follow mode, transit time picker + mode filters,
+    itinerary legs), `StopDepartures`, `TripItineraryCard`, and the **routing
+    helpers** (`skateTime`, `distanceReadout`, `maneuverDescriptor` →
+    `MODE_LABEL_KEYS`/`MANEUVER_LABEL_KEYS` static maps, `routeCache.formatAge`).
+  - `sasquatchUi.*` — `SasquatchGuide`, `SasquatchProDialog`, `SasquatchActionCard`,
+    `SasquatchAiStatusCard`, plus `sasquatchPro.ts` `PRO_TIERS.labelKey/badgeKey`
+    and `useSasquatchActions.summarizeDraft(d, t)`. **LLM system prompts and chat
+    bodies stay English** (the model is language-directed separately).
+  - `collectionUi.*` / `bootUi.*` — `AddToCollectionDialog` placeholders,
+    `SplashScreen` status lines.
+  - `labelsUi.*` (221 keys) — the **shared data-module labels**: spot categories/
+    features/types, access, shelter, event types, gear categories/conditions,
+    price/listings, tours, crews, member-visibility, tag categories, spot status.
+    `src/lib/labelKeys.ts` holds the shared `*_KEYS` value→key maps (single
+    source; the five duplicated `EVENT_TYPE_KEYS` copies now import it).
+    `statusTimeAgo()` and `formatPrice(price, type, t?)` are locale-aware now.
+  - **Dates & relative times are localized (2026-10-02):**
+    **`src/lib/dateFnsI18n.ts`** re-exports `date-fns` with
+    `formatDistanceToNow`/`…Strict`/`formatDistance`/`format` defaulting to the
+    active locale, plus `dateLocaleCode()` for native `toLocale{Date,Time}String`.
+    `LanguageProvider` calls `setDateLocale(language)` **during render** so the
+    first paint is in-language. **Import from `@/lib/dateFnsI18n`, not
+    `date-fns`.** Number `.toLocaleString()` calls are deliberately left on the
+    runtime default.
+- **Still to translate (batch 4):** the **Lab `*_LABELS`/`*_DESCRIPTIONS` maps**
+  in `src/lib/types.ts` (coach/filmer/editor/photo/builder/artist/graffiti/tattoo/
+  trainer/musician/judge/organizer/barber — ~35 maps), `TOUR_SKILL_LEVELS`, the
+  Sasquatch **static FAQ / local-result chat bodies** and `usePurchasePro` receipt
+  prose, and remaining **feed-supplied vs app-word** distinctions. `TagCategory`
+  names/descriptions have keys but no component renders them. Grep a module
+  before assuming it is translated.
 - ⚠️ A batch-2 agent dropped the `socialUi.` namespace prefix in ~36 files — the
   `check:i18n` guard caught all 738 usages. **Always run `node scripts/check-i18n.mjs`
   (it's in `npm test`) after wiring a file.**