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>

apps/journal/app/lib/federation-objects.server.test.ts

@@ -11,6 +11,7 @@ const ACTIVITY: FederatableActivity = {
   id: "act-1",
   name: "Morning ride <3",
   description: 'Through the "forest" & hills',
+  sportType: "ride",
   distance: 42_195,
   elevationGain: 512.4,
   duration: 2 * 3600 + 30 * 60,
@@ -50,6 +51,14 @@ describe("activityToNote", () => {
     expect(byName.get("distance-m")).toBe("42195");
     expect(byName.get("elevation-gain-m")).toBe("512");
     expect(byName.get("duration-s")).toBe("9000");
+    expect(byName.get("sport")).toBe("ride");
+  });
+
+  it("omits the sport attachment when sport is unset", async () => {
+    const note = activityToNote({ ...ACTIVITY, sportType: null }, "bruno");
+    const names = [];
+    for await (const a of note.getAttachments()) names.push(String((a as { name: unknown }).name));
+    expect(names).not.toContain("sport");
   });
 
   it("omits stats it doesn't have", () => {