deploy: admit beast on the node's miner link and scrape it

Mainnet call 2026-09-09: beast mines. The node's firewalld rich rule for
the QUIC miner port and Prometheus's miner targets gain beast, matching
quantus/miner's deploy matrix.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CBgs2nSi4H2mdh8kD8vMX5

.gitea/workflows/deploy.yaml

@@ -102,7 +102,7 @@ env:
   # asserts Prometheus actually has every target UP, so drift fails loudly rather
   # than silently monitoring nothing.
   SCRAPE_NODES: bob.hanzalova.internal
-  SCRAPE_MINERS: benjy.hanzalova.internal quadbrat.hanzalova.internal
+  SCRAPE_MINERS: benjy.hanzalova.internal quadbrat.hanzalova.internal beast.hanzalova.internal
   # The arena exporter runs beside each node, reading its loopback RPC.
   SCRAPE_ARENA: bob.hanzalova.internal
 
@@ -207,7 +207,7 @@ jobs:
             # MinerHandle), and each miner picks its own random starting nonce,
             # so no coordination or range allocation is needed. A node per miner
             # would only be needed for a separate reward address.
-            miners: benjy.hanzalova.internal quadbrat.hanzalova.internal
+            miners: benjy.hanzalova.internal quadbrat.hanzalova.internal beast.hanzalova.internal
             # Complete flag, or "" for a node with no public ingress. Requires a
             # matching inbound TCP forward at the site edge — the flag only
             # advertises, it does not open anything.