Mobile Phase 8f: Pipeline card → dc anatomy (earmark/Priority/recency, scroll pills, dots)

Bring the mobile Pipeline surface to the PipelineApp.dc.html default anatomy:

- Segmented control → horizontal-scroll pills with label + count badge; the active
  pill tints to its own stage color via --seg-* (aliased to --chip-*, so it flips in light).
- Card → earmark corner + name + Priority pill / $amount · dot · recency / labeled
  ‹ Prev · Next › move footer (was name + contact·org sub + bare chevrons). Compact amount.
- Stage-column header → StageChip + investor count + committed sum.
- Page dots → tappable, active = 22px accent bar.

Backend: the opportunities list injects two derived read-only fields (mirroring the
Contacts-list pattern; opp writes use a field allowlist so neither round-trips):
- existing_investor (contact_grid_signals committed>0) so the card earmark agrees with
  the detail's "Existing LP" pill.
- last_contact_date (MAX communication_date on the deal's contact, deleted_at-filtered)
  → card recency line + the Staleness sort (replaces the updated_at proxy).

Guarded by new soft-delete assertions in test_soft_delete_reads.py. 39/39 green.

backend/test_soft_delete_reads.py

@@ -137,6 +137,18 @@ def main():
         check(rowC is not None, "cLive present in contact list")
         if rowC:
             check(rowC.get("comm_count") == 1, f"contact comm_count: live only (cmLive -> 1; got {rowC.get('comm_count')})")
+        # opportunities list: the injected last_contact_date subselect (8f) excludes soft-deleted
+        # comms. opLive's contact cLive has cmLive (2026-05-01, live) + cmDead (2026-05-02, deleted);
+        # the recency must be the LIVE comm's date, never the later deleted one. existing_investor
+        # is a derived bool (cLive isn't grid-linked here -> False).
+        _, opplist = _get(port, "/api/opportunities", token)
+        rowO = next((x for x in (opplist or {}).get("data", []) if x.get("id") == "opLive"), None)
+        check(rowO is not None, "opLive present in opportunities list")
+        if rowO:
+            check(rowO.get("last_contact_date") == "2026-05-01",
+                  f"opp last_contact_date: live comm only (2026-05-01, not deleted 2026-05-02; got {rowO.get('last_contact_date')})")
+            check(rowO.get("existing_investor") is False,
+                  f"opp existing_investor present+bool (got {rowO.get('existing_investor')!r})")
     finally:
         httpd.shutdown()