feat: add Boosty donation link to README and LuCI support modal

- Add Boosty badge to README.md and README.en.md headers
- Add Boosty as first donation option in support sections of both READMEs
- Add Boosty card (with orange border accent) to LuCI diagnostic support modal
- Add Russian translations for Boosty strings in po/ru/tachyon.po

luci-app-tachyon/htdocs/luci-static/resources/view/tachyon/main.js

@@ -15573,6 +15573,7 @@ var CRYPTO_LIST = [
   }
 ];
 var CLOUDTIPS_URL = "https://pay.cloudtips.ru/p/48c57581";
+var BOOSTY_URL = "https://boosty.to/tachyon";
 async function copyTextToClipboard(text) {
   try {
     if (navigator.clipboard && window.isSecureContext) {
@@ -15613,6 +15614,46 @@ function renderSupportModal() {
       )
     ]
   );
+  const boostyCard = E(
+    "div",
+    {
+      style: "margin-bottom: 16px; padding: 14px; background: var(--background-color-secondary, rgba(0, 0, 0, 0.05)); border: 1px solid rgba(255, 106, 0, 0.35); border-radius: 6px;"
+    },
+    [
+      E(
+        "div",
+        {
+          style: "display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;"
+        },
+        [
+          E(
+            "div",
+            { style: "display: flex; flex-direction: column; gap: 2px;" },
+            [
+              E("div", { style: "font-weight: bold; font-size: 14px;" }, [
+                "⭐ Boosty"
+              ]),
+              E(
+                "div",
+                {
+                  style: "font-size: 12px; color: var(--text-color-medium, #888);"
+                },
+                _("Subscriptions, one-time donations and exclusives")
+              )
+            ]
+          ),
+          renderButton({
+            classNames: ["cbi-button-action"],
+            icon: renderLinkIcon24,
+            text: _("Support on Boosty"),
+            onClick: () => {
+              window.open(BOOSTY_URL, "_blank", "noopener,noreferrer");
+            }
+          })
+        ]
+      )
+    ]
+  );
   const cloudTipsCard = E(
     "div",
     {
@@ -15760,7 +15801,7 @@ function renderSupportModal() {
     {
       style: "max-width: 640px; width: 100%; box-sizing: border-box; padding: 4px;"
     },
-    [introBlock, cloudTipsCard, cryptoSection, footer]
+    [introBlock, boostyCard, cloudTipsCard, cryptoSection, footer]
   );
   ui.showModal(`💖 ${_("Support Development")}`, modalContent);
 }