feat(P1): orca-traefik container image + release pipeline (REQ-171)

Dockerfile.traefik: extends traefik:v3.3.0 with baked default
static config (entrypoints 127.0.0.1:8080/8443/8081, file provider
watching /etc/traefik/dynamic, json log). Host-side traefik.yml
mounted :ro at runtime to override baked default (preserves
traefik-on-public-ip opt-out, REQ-100, C-58).

No certificatesResolvers — traefik v3.3 only supports acme/tailscale
(research finding). tls: {} in dynamic config for v0.14; real mTLS
deferred to v0.15 (grill G-003, confidence 0.55 < 0.60).

release.sh: second docker block builds+pushes orca-traefik image.
.coreci.yml: container-publish-traefik step mirrors container-publish.

Verified: docker build -f Dockerfile.traefik . succeeds; image starts
traefik v3.3.0 with --configFile=/etc/traefik/traefik.yml.

---ci---
project: orca
phase: 1
milestone: v0.14
status: execute
---/ci---

docker/orca-traefik/traefik.yml

@@ -0,0 +1,19 @@
+entryPoints:
+  websecure:
+    address: "127.0.0.1:8443"
+  web:
+    address: "127.0.0.1:8080"
+  traefik:
+    address: "127.0.0.1:8081"
+
+providers:
+  file:
+    directory: "/etc/traefik/dynamic"
+    watch: true
+
+log:
+  level: INFO
+  format: json
+
+accessLog:
+  format: json