feat: add Kiro (AWS CodeWhisperer) quota display support

- Add Kiro quota types (KiroFreeTrialInfo, KiroUsageBreakdown, KiroQuotaPayload, KiroQuotaState)
- Add Kiro API constants and request headers
- Add isKiroFile validator and parseKiroQuotaPayload parser
- Add KIRO_CONFIG with fetchKiroQuota and renderKiroItems
- Add kiroQuota state to useQuotaStore
- Add Kiro QuotaSection to QuotaPage
- Add Kiro styles (.kiroGrid, .kiroControls, .kiroControl, .kiroCard)
- Add i18n translations for kiro_quota (zh-CN and en)

Features:
- Separate display for base credits and bonus credits (freeTrialInfo)
- Total credits summary
- Correct parsing of seconds timestamp (scientific notation like 1.769904E9)
- Reset time display
- Subscription type display

src/i18n/locales/en.json

@@ -375,6 +375,7 @@
     "filter_claude": "Claude",
     "filter_codex": "Codex",
     "filter_antigravity": "Antigravity",
+    "filter_kiro": "Kiro",
     "filter_iflow": "iFlow",
     "filter_vertex": "Vertex",
     "filter_empty": "Empty",
@@ -386,6 +387,7 @@
     "type_claude": "Claude",
     "type_codex": "Codex",
     "type_antigravity": "Antigravity",
+    "type_kiro": "Kiro",
     "type_iflow": "iFlow",
     "type_vertex": "Vertex",
     "type_empty": "Empty",
@@ -460,6 +462,23 @@
     "fetch_all": "Fetch All",
     "remaining_amount": "Remaining {{count}}"
   },
+  "kiro_quota": {
+    "title": "Kiro Quota",
+    "empty_title": "No Kiro Auth Files",
+    "empty_desc": "Upload a Kiro credential to view remaining quota.",
+    "idle": "Not loaded. Click Refresh Button.",
+    "loading": "Loading quota...",
+    "load_failed": "Failed to load quota: {{message}}",
+    "missing_auth_index": "Auth file missing auth_index",
+    "empty_data": "No quota data available",
+    "refresh_button": "Refresh Quota",
+    "fetch_all": "Fetch All",
+    "subscription_label": "Subscription",
+    "base_credits_label": "Base Credits",
+    "bonus_credits_label": "Bonus Credits",
+    "total_credits_label": "Total Credits",
+    "remaining_credits": "Remaining {{count}}"
+  },
   "vertex_import": {
     "title": "Vertex JSON Login",
     "description": "Upload a Google service account JSON to store it as auth-dir/vertex-<project>.json using the same rules as the CLI vertex-import helper.",