One gate to the world: Shorashim and Gitea behind the shared ingress

Three NLBs became one (185.19.28.170, ingress-nginx).

Shorashim: `shorashim-external` (NLB 185.19.29.180, NodePort 30923)
is replaced by an Ingress — a host-less catch-all (works by IP, no DNS)
plus a `shorashim.ch` rule ready for the A record; TLS deliberately not
requested until the name resolves. Sanhedrin-length proxy timeouts.

The watch behind the ingress (completes tablet 46): the TCP peer is now
the ingress controller, so Mishmar.peer/1 takes the caller from
X-Real-IP — only when the peer is inside TRUSTED_PROXIES (the pod
network, configmap); from anyone else the header is the caller's own
claim and is ignored. The ingress Service was already
externalTrafficPolicy: Local with its health-check port open, so the
caller's address arrives without the security-group change the direct
route needed. Verified live: the 11th knock is 429, a forged X-Real-IP
is still 429, and in the same minute the old route (pod sees the node)
was a different subject.

Gitea: no name of its resolves, so it rides the controller's TCP
passthrough on the same NLB — :3000 → gitea:80, :22 → gitea:22
(ingress-tcp-services.yaml), on the two NodePorts the security group
already allowed. gitea-mcp now reaches Gitea over the cluster network
instead of out through an NLB and back.

Tamid §1.1 note, KOHEN.md, AGENTS.md. Doorpost e4e3d56d… → a2ec3842….
Elixir 539/0 (L3 on and off).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

vav_pipeline/config/runtime.exs

@@ -32,6 +32,12 @@ if config_env() == :prod do
       System.get_env("KORBAN_SOCKET_PATH") || "/tmp/shorashim/korban.sock",
     # The keys themselves are in the file (a mounted Secret), not in env.
     api_keys_file: System.get_env("API_KEYS_FILE") || "/etc/shorashim/secrets/api_keys",
+    # The ingress controller's network: only from there is X-Real-IP the
+    # caller's address (BigdeiKodesh.Mishmar.peer/1). Comma-separated CIDRs.
+    trusted_proxies:
+      (System.get_env("TRUSTED_PROXIES") || "")
+      |> String.split(",", trim: true)
+      |> Enum.map(&String.trim/1),
     # Shoresh Engine binary — VavPipeline.ShoreshEnginePort opens an
     # Erlang Port with {:spawn_executable, binary}, which spawns a CHILD
     # PROCESS OF THIS CONTAINER. A Port cannot cross a container