Phase 002: rebrand to hermes-ui and consolidate i18n to zh/en

Removes the ekko / hermes-web-ui branding from the whole tree and drops
eight locale files, so the project presents one name and one language pair.

Data compatibility is deliberate, not accidental: DB filenames, the JWT
audience, and skill manifest ownership all still recognise their pre-rename
values so existing deployments under ~/.hermes-web-ui keep working without a
re-login or a re-injection.

scripts/harness-check.mjs now scans for the legacy strings and fails the
build on any new occurrence, with an explicit allow-list (and reasons) for
the compatibility paths that must keep them.

package.json

@@ -1,12 +1,11 @@
 {
   "name": "hermes-ui",
   "version": "0.6.29",
-  "description": "Self-hosted AI chat dashboard for Hermes Agent — multi-model web UI with multi-platform integration",
+  "description": "Self-hosted web dashboard for Hermes Agent — chat, sessions, skills, MCP, and usage analytics",
   "repository": {
     "type": "git",
-    "url": "https://github.com/EKKOLearnAI/hermes-studio.git"
+    "url": "https://gitea.erhe.top/toor/hermes-ui.git"
   },
-  "homepage": "https://hermes-studio.ai",
   "license": "BSL-1.1",
   "engines": {
     "node": ">=23.0.0"
@@ -14,7 +13,7 @@
   "keywords": [
     "hermes",
     "hermes-agent",
-    "hermes-web",
+    "hermes-ui",
     "agent",
     "ai",
     "ai-agent",