hc: warmup must run DAILY for the full 21-day ramp (not weekdays-only)

The HC warmup crons were '* * 1-5' (Mon-Fri), silently skipping weekends -- but a
proper warmup needs CONTINUOUS daily volume for 21 days (mailbox providers reward
consistency; gaps stall reputation). The Jun 14 'HC 0 sent' alert was just a
skipped Sunday, but the weekend skips also broke ramp continuity.

- pw-hc-campaign + pw-hc-nppes: '* * 1-5' -> '* * *' (daily), vendored + applied live.
- Re-aligned the warmup start stamp from calendar-day 9 to send-day 5 so the
  volume ramp matches reputation actually built (it had skipped ~4 weekend days,
  running the ramp ahead of real history).
- Fixed the stale 'Mon-Fri only' comment in daily_slice().
- Vendored nppes cron now carries the enriched-CSV + 4-segment config.

scripts/build_healthcare_campaigns_cron.py

@@ -124,7 +124,8 @@ def warmup_day() -> int:
 def daily_slice(day: int) -> int:
     """TOTAL new subscribers to import across ALL segments today, aligned with
     the hc ramp. The rampcap caps hourly *delivery*; this caps daily *queueing*
-    so we never flood the warming IPs. Mon-Fri only (cron enforces weekday)."""
+    so we never flood the warming IPs. Runs DAILY (continuous warmup -- mailbox
+    providers reward consistent daily volume; weekends are NOT skipped)."""
     if day <= 1:   return 100
     if day <= 4:   return 300
     if day <= 9:   return 600