fix(suggestion): stop generating mid-typing and let a pause bring a suggestion at once

With a 100 ms trigger left in the installed config, generation started in the
gaps between keystrokes; the next key ended the session silently, and that
session still counted against the 5 s minimum interval, so the moment the
user actually paused nothing came (rate-limited). The log showed a
generate-then-vanish cycle every 5-6 s.

The trigger delay now has a 500 ms floor and settings revision 6 resets a
stored value below it to 600 ms. A session ended because the user kept typing
no longer blocks the next request by the minimum interval (per-minute and
daily caps still apply), and that dismissal is logged.

apps/desktop/src/main/services/ConfigService.ts

@@ -18,7 +18,7 @@ import { getLogger } from './LoggerService'
 const logger = getLogger('ConfigService')
 
 /** 제안/텔레메트리 튜닝 기본값의 현재 개정판. 기본값을 바꾸면 올린다. */
-const SUGGESTION_TUNING_REVISION = 5
+const SUGGESTION_TUNING_REVISION = 6
 
 const INITIAL_SUGGESTION_TUNING = {
   suggestionTriggerDelayMs: 300,
@@ -59,6 +59,11 @@ function migrateSuggestionTuning(activeStore: ElectronStore<AppConfig>): void {
   }
 
   if (current < 5) migrateSuggestionOverlayBindings(activeStore)
+  // 설정 화면에 없는 값인데 설치본에 100ms 가 남아 치는 도중 생성이 시작됐다 — 하한 미만이면 기본값으로.
+  if (current < 6) {
+    const delay = Number(raw.suggestionTriggerDelayMs)
+    if (!Number.isFinite(delay) || delay < 500) activeStore.set('suggestionTriggerDelayMs', 600)
+  }
 
   activeStore.set('suggestionTuningRevision', SUGGESTION_TUNING_REVISION)
   logger.info(