launchers: the opencode UI is oc.ci.commoninternet.net (not tailnet-only); journal the key switch

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FqkQq3CDmFWcQ7u1LzoyRz

cc-ci-plan/launch.py

@@ -327,7 +327,7 @@ def start_agent(role, session, workdir):
             f"NO_COLOR=1 {OPENCODE_BIN} attach {OPENCODE_SERVER} --dir {session_cwd}"
         )
         log(f"starting {session} (backend=opencode, phase={pid}, model={model or 'default'})")
-        log(f"  visible at http://oc.commoninternet.net (tailnet only)")
+        log(f"  visible at https://oc.ci.commoninternet.net")
     else:
         die(f"unknown BACKEND '{BACKEND}' — set LOOP_BACKEND=claude or LOOP_BACKEND=opencode")