activity-sport-type: schema, contract, write/read paths, federation

Implements the activity-sport-type change (specs/activity-sport-type):

- db: nullable `sport_type` column on journal.activities + SportType /
  SPORT_TYPES (text().$type<> convention).
- api: optional sportType on the activity read + create schemas (mirrored
  SPORT_TYPES; @trails-cool/api stays zod-only).
- write: ActivityInput + createActivity persist it; mapSportType() normalizes
  provider strings (Komoot bulk import passes tour.sport; Garmin unset);
  threaded through the unified importActivity.
- read/display: sportType added to the detail/feed/profile loaders and the v1
  REST endpoints; shared SportBadge (glyph + i18n label) on detail, feed, and
  profile; sport-aware feed verb; create-form <select>.
- i18n: journal.activities.sport.* (labels + verbs) in en + de.
- federation: `sport` PropertyValue on the Note when set.

Tests: mapSportType unit table; federation asserts the sport attachment is
present when set and omitted when unset. typecheck + lint + unit all green.
E2E (create→badge) still to add.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/i18n/src/locales/de.ts

@@ -365,6 +365,28 @@ export default {
       delete: "Aktivität löschen",
       deleteConfirm: "Möchtest du diese Aktivität wirklich löschen?",
       importedFrom: "Importiert von {{provider}}",
+      sport: {
+        label: "Sportart",
+        unspecified: "Nicht angegeben",
+        hike: "Wandern",
+        walk: "Gehen",
+        run: "Laufen",
+        ride: "Radfahren",
+        gravel: "Gravel",
+        mtb: "Mountainbike",
+        ski: "Ski",
+        other: "Sonstiges",
+        verb: {
+          hike: "war wandern",
+          walk: "war spazieren",
+          run: "war laufen",
+          ride: "war Rad fahren",
+          gravel: "war Gravel fahren",
+          mtb: "war Mountainbiken",
+          ski: "war Ski fahren",
+          other: "hat eine Aktivität erfasst",
+        },
+      },
       sortByDate: "Aktivitätsdatum",
       sortByAdded: "Hinzugefügt am",
       visibility: {

packages/i18n/src/locales/en.ts

@@ -365,6 +365,28 @@ export default {
       delete: "Delete Activity",
       deleteConfirm: "Are you sure you want to delete this activity?",
       importedFrom: "Imported from {{provider}}",
+      sport: {
+        label: "Sport",
+        unspecified: "Unspecified",
+        hike: "Hike",
+        walk: "Walk",
+        run: "Run",
+        ride: "Ride",
+        gravel: "Gravel",
+        mtb: "Mountain bike",
+        ski: "Ski",
+        other: "Other",
+        verb: {
+          hike: "went hiking",
+          walk: "went for a walk",
+          run: "went for a run",
+          ride: "went for a ride",
+          gravel: "went gravel riding",
+          mtb: "went mountain biking",
+          ski: "went skiing",
+          other: "logged an activity",
+        },
+      },
       sortByDate: "Activity date",
       sortByAdded: "Date added",
       visibility: {