[Bug] Forward to group topic using --topic is not working

[PacificCosmophile]

Describe the bug

Unable to use --topic flag while forwarding to specific group topic.
If I don't use --topic flag then the messages are forwarded to #General topic

To Reproduce

$ tdl forward -n namespace --from chat-export.json --to 3777888999 --topic 7 --mode clone --desc -t 8 -l 1

Error: unknown flag: --topic

Expected behavior

Messages should get forwarded to specific group topic using --topic flag

Version

Version: 0.20.1
Commit: 742da1b
Date: 2025-12-14T16:19:18Z

go1.23.10 windows/amd64

Which OS are you running tdl on?

Windows

Additional context

No response

[PacificCosmophile]

Also if I use

$ tdl forward -n namespace --from chat-export.json --to '{ Peer: "3777888999", Thread: 7 }' --mode clone --desc -t 8 -l 1

I get this error

Error: callback:
    github.com/gotd/td/telegram.(*Client).Run.func3
        github.com/gotd/td@v0.122.0/telegram/connect.go:174
  - resolve dest peer:
    github.com/iyear/tdl/app/forward.Run
        github.com/iyear/tdl/app/forward/forward.go:73
  - literal not terminated (1:3)
 | '{
 | ..^

[sabasjoyu-cyber]

Use this on CMD:
tdl forward --from tdl-export.json --to "{\"Peer\":\"3777888999\",\"Thread\":7}" --mode clone --desc -t 8 -l 1