feat(sub): add dynamic remark variables with Jalali date, transport, and status tokens (#5430)

* feat(sub): implement dynamic single-bracket remark variables with timezone-aware inline Jalali conversion

* Update .gitignore

* Update .gitignore

* merge: bring in origin/main commits to resolve conflict base

* fix(sub): address review issues in dynamic remark variables

- Add TIME_LEFT to unlimitedDropTokens so segments containing only
  {TIME_LEFT} are dropped for unlimited clients (same as DAYS_LEFT)
- Remove dead uiSingleBraceRe variable (translateUISingleBrackets uses
  a character scanner, not this regex)
- Change expireDateLabel to use time.Local instead of UTC, consistent
  with jalaliExpireDateLabel

Co-authored-by: Sanaei <MHSanaei@users.noreply.github.com>

* fix

* fix

---------

Co-authored-by: MHSanaei <MHSanaei@users.noreply.github.com>

.gitignore

@@ -43,4 +43,5 @@ system_metrics.gob
 docker-compose.override.yml
 
 # Ignore .env (Environment Variables) file
-.env
+.env
+