chore: 清理 emoji 与修正发布脚本仓库名

产品代码统一为纯文本风格（照参考实现），去掉 emoji：billing/quota/usage 插件、
channels 的提示文案、WebUI 文案，以及 go 测试、docs、packaging 脚本中的
注意/OK/FAIL 等符号化写法。第三方目录（vendor、node_modules、.probe）不动。

另：packaging/upload-release.sh 的仓库名改为真实全名
JianFeeeee/ModelRouter → HeNanMU-EEA/ModelRouter（前者是重定向，POST/PUT 不跟随
会 404）。

packaging/core-dist.sh

@@ -103,7 +103,7 @@ for f in "$DIST"/llmsproxy_*.deb "$DIST"/llmsproxy-*.rpm "$DIST"/*.tar.gz; do
   [ -f "$f" ] || continue
   sz=$(stat -c%s "$f")
   [ "$sz" -gt 100000 ] || { echo "[core-dist] FATAL: $f suspiciously small ($sz B)"; exit 1; }
-  log "  ✓ $f ($((sz/1024)) KB)"
+  log "  OK $f ($((sz/1024)) KB)"
 done
 # dpkg-deb takes ONE archive; every extra argument is read as an additional
 # control-component name. With the glob unquoted this used to expand to three
@@ -133,7 +133,7 @@ for want in llmsproxy config.example.yaml llmsproxy.service plugins/billing.lua;
     echo "            (release notes claim the billing plugin ships with the core)"
     exit 1
   fi
-  log "  ✓ archive contains $want"
+  log "  OK archive contains $want"
 done
 # Directories are matched by their CONTENTS, not by name: tar written with
 # `tar -czf` from a populated tree lists "…/adapters/openai.lua" and never a bare
@@ -144,6 +144,6 @@ if [ "$n_adapters" -lt 10 ]; then
   echo "[core-dist] FATAL: archive has only $n_adapters adapters (expected >= 10)"
   exit 1
 fi
-log "  ✓ archive contains $n_adapters adapters"
+log "  OK archive contains $n_adapters adapters"
 
 log "done: $DIST"