Integrated channel filter, partially restored actor bio.

package.json

@@ -15,6 +15,7 @@
     "@vue/server-renderer": "^3.3.10",
     "compression": "^1.7.4",
     "config": "^3.3.9",
+    "convert": "^4.14.1",
     "cross-env": "^7.0.3",
     "date-fns": "^3.0.0",
     "error-stack-parser": "^2.1.4",
@@ -23,6 +24,7 @@
     "express-query-boolean": "^2.0.0",
     "knex": "^3.1.0",
     "manticoresearch": "^4.0.0",
+    "mathjs": "^12.2.1",
     "mitt": "^3.0.1",
     "nanoid": "^5.0.4",
     "path-to-regexp": "^6.2.1",