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.

bin/hermes-ui.mjs

@@ -450,12 +450,12 @@ function startDaemon(port) {
   const interval = 500
   let waited = 0
 
-  console.log(`  ⏳ Starting hermes-web-ui (PID: ${child.pid}, port: ${port})...`)
+  console.log(`  ⏳ Starting hermes-ui (PID: ${child.pid}, port: ${port})...`)
 
   function poll() {
     waited += interval
     if (!isRunning(child.pid)) {
-      console.log('  ✗ Failed to start hermes-web-ui')
+      console.log('  ✗ Failed to start hermes-ui')
       console.log(`    Check log: ${LOG_FILE}`)
       removePid()
       process.exit(1)
@@ -507,7 +507,7 @@ function stopDaemon(options = {}) {
   let cleanedStalePid = false
   if (pidFromFile && !isRunning(pidFromFile)) {
     removePid()
-    console.log(`  ✓ hermes-web-ui was not running (cleaned stale PID: ${pidFromFile})`)
+    console.log(`  ✓ hermes-ui was not running (cleaned stale PID: ${pidFromFile})`)
     pidFromFile = null
     cleanedStalePid = true
   }
@@ -516,16 +516,16 @@ function stopDaemon(options = {}) {
   if (!pid) {
     if (cleanedStalePid) return
     if (stoppedPreviewPids) {
-      console.log(`  ✓ hermes-web-ui preview stopped`)
+      console.log(`  ✓ hermes-ui preview stopped`)
       return
     }
-    console.log('  ✗ hermes-web-ui is not running')
+    console.log('  ✗ hermes-ui is not running')
     process.exit(1)
   }
 
   if (!isRunning(pid)) {
     removePid()
-    console.log(`  ✓ hermes-web-ui was not running (cleaned stale PID)`)
+    console.log(`  ✓ hermes-ui was not running (cleaned stale PID)`)
     return
   }
 
@@ -561,11 +561,11 @@ function stopDaemon(options = {}) {
 function showStatus() {
   const pid = getPid()
   if (pid && isRunning(pid)) {
-    console.log(`  ✓ hermes-web-ui is running (PID: ${pid})`)
+    console.log(`  ✓ hermes-ui is running (PID: ${pid})`)
     console.log(`    PID file: ${PID_FILE}`)
   } else {
     if (pid) removePid()
-    console.log('  ✗ hermes-web-ui is not running')
+    console.log('  ✗ hermes-ui is not running')
   }
 }
 
@@ -588,7 +588,7 @@ function clearLoginLocks(options = {}) {
   }
 
   if (!silent && serverRunning) {
-    console.log('  ⚠ hermes-web-ui is running; restart it to clear in-memory login locks.')
+    console.log('  ⚠ hermes-ui is running; restart it to clear in-memory login locks.')
     console.log('    Run: hermes-ui restart')
   }
 
@@ -747,7 +747,7 @@ Options:
 }
 
 function doUpdate() {
-  console.log('  ⬆ Updating hermes-web-ui...')
+  console.log('  ⬆ Updating hermes-ui...')
 
   const npm = getNpmBin()
   try {