feat: webUI MCP 可视化配置面板 + README 更新

pi-web/lib/i18n/messages/en.ts

@@ -8,6 +8,7 @@ export const enLocale: LocalePlugin = {
     "common.ok": "OK",
     "common.language": "Language",
     "common.models": "Models",
+    "common.mcp": "MCP",
     "common.skills": "Skills",
     "common.plugins": "Plugins",
     "sidebar.hide": "Hide sidebar",
@@ -236,6 +237,27 @@ export const enLocale: LocalePlugin = {
     "chat.commandCopy": "Copy the last assistant message",
     "chat.compacted": "Compacted",
     "chat.tokensSaved": "{saved} saved",
+    "mcp.addServer": "Add server",
+    "mcp.addEnv": "Add env",
+    "mcp.serverName": "Server name",
+    "mcp.enabled": "Enabled",
+    "mcp.transport": "Transport",
+    "mcp.command": "Command",
+    "mcp.args": "Arguments (one per line)",
+    "mcp.url": "URL",
+    "mcp.headers": "Headers (JSON)",
+    "mcp.auth": "Auth",
+    "mcp.bearerToken": "Bearer token",
+    "mcp.cwd": "Working directory",
+    "mcp.lifecycle": "Lifecycle",
+    "mcp.idleTimeout": "Idle timeout (minutes)",
+    "mcp.requestTimeout": "Request timeout (ms)",
+    "mcp.advanced": "Advanced (raw JSON)",
+    "mcp.applyJson": "Apply JSON",
+    "mcp.invalidJson": "Invalid JSON",
+    "mcp.noServers": "No MCP servers configured",
+    "mcp.selectServer": "Select a server to edit",
+    "mcp.restartHint": "Saved changes apply after restarting pi (or /reload).",
     "i18n.close": "Close",
     "i18n.copy": "Copy",
     "i18n.copied": "Copied",