feat: add date selector for viewing archived panel logs (#1316)

* Initial plan

* feat: add date selector for log viewing

- Add date parameter to log list API
- Add log dates listing API
- Update frontend with date selector in all log views
- Add translations for Date field

Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>

* refactor: cache regex patterns to avoid recompilation overhead

Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>

* refactor: use predefined regex constants instead of sync.Map

Simplified the regex caching by using predefined package-level constants
for the three log types (app, db, http) instead of sync.Map.

Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>

* fix: lint

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: devhaozi <115467771+devhaozi@users.noreply.github.com>
Co-authored-by: 耗子 <haozi@loli.email>

internal/http/request/log.go

@@ -4,4 +4,10 @@ package request
 type LogList struct {
 	Type  string `json:"type" form:"type" query:"type" validate:"required|in:app,db,http"`
 	Limit int    `json:"limit" form:"limit" query:"limit" validate:"min:1|max:1000"`
+	Date  string `json:"date" form:"date" query:"date"` // 日期，格式为 YYYY-MM-DD，空表示当天
+}
+
+// LogDates 日志日期列表请求
+type LogDates struct {
+	Type string `json:"type" form:"type" query:"type" validate:"required|in:app,db,http"`
 }