fix: handle special char search 500 & polish live badge (#144)

* fix(search): handle numeric query FTS errors regardless of table existence

Remove the `no such table: messages_fts` condition so numeric queries
fall back to LIKE search on any FTS failure (malformed MATCH, missing
table, etc.).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(search): handle special char queries, polish live badge UI

- Add hasUnsafeChars() to catch FTS5-breaking queries (¥, @, #, etc.)
  and fall back to LIKE search, preventing 500 errors
- Polish session live badge: smaller size, remove border/shadow,
  add pulsing dot indicator for a cleaner look
- Remove spinner drop-shadow glow effect

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/server/src/db/hermes/sessions-db.ts

@@ -163,6 +163,10 @@ function isNumericQuery(text: string): boolean {
   return /^\d+(?:\s+\d+)*$/.test(text.trim())
 }
 
+function hasUnsafeChars(text: string): boolean {
+  return /[^\w\s\u4e00-\u9fff\u3400-\u4dbf\u3000-\u303f\u3040-\u309f\u30a0-\u30ff\uac00-\ud7af]/.test(text)
+}
+
 function runLikeContentSearch(
   db: { prepare: (sql: string) => { all: (...params: any[]) => Record<string, unknown>[] } },
   source: string | undefined,
@@ -358,7 +362,7 @@ export async function searchSessionSummaries(
       return [...merged.values()].slice(0, limit)
     }
 
-    if (message.includes('no such table: messages_fts') && isNumericQuery(trimmed)) {
+    if (isNumericQuery(trimmed) || hasUnsafeChars(trimmed)) {
       const likeRows = runLikeContentSearch(db, source, trimmed)
       const merged = new Map<string, HermesSessionSearchRow>()
       for (const row of titleRows) {