fix(ui+alerts+email): prod walkthrough batch

- proxy/banner: interest-berth-status-banner used the interest_berths
  junction id for /api/v1/berths/{id}/active-interests (404 on every
  interest with a sold/under-offer berth). Add berthId to BerthRow and use
  it for both the active-interests query and the BerthOccupancyChip.
- scroll-area: override Radix viewport `display:table` (`[&>div]:!block`) so
  content respects the viewport width — fixes notification alert cards
  overflowing past the popover. No horizontal-scroll ScrollArea in the app.
- alert-card: drop the raw `interest.stale` rule key from the footer
  (plaintext only; the title already conveys the alert).
- alert-rules (interest.stale): add a createdAt >14d floor so a bulk import
  that backdates dateLastContact doesn't instantly flag every migrated
  interest as stale and flood the alert rail. 14-day clock starts no earlier
  than when the interest entered this system.
- env: allow EMAIL_REDIRECT_TO in production behind an explicit
  ALLOW_PROD_EMAIL_REDIRECT=true opt-in (beta: route all outbound mail to
  the operator inbox; default still refuses the footgun).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/lib/services/alert-rules.ts

@@ -99,6 +99,12 @@ async function interestStale(portId: string): Promise<AlertCandidate[]> {
         eq(interests.portId, portId),
         inArray(interests.pipelineStage, STALE_STAGES),
         isNull(interests.archivedAt),
+        // An interest can't be "stale for 14+ days" if it has only existed for
+        // less than 14 days. Without this floor, a bulk import (which backdates
+        // dateLastContact to the legacy value) instantly flags every migrated
+        // interest as stale and floods the alert rail. The 14-day clock starts
+        // no earlier than when the interest entered THIS system.
+        lt(interests.createdAt, daysAgo(14)),
         or(
           lt(interests.dateLastContact, daysAgo(14)),
           and(isNull(interests.dateLastContact), lt(interests.updatedAt, daysAgo(14))),