fix: distinguish scheduled vs sent in output messaging

[felipefreitag]

Spinner text, interactive output, and help text now correctly say "scheduled" instead of "sent" when --scheduled-at is used.

[cubic-dev-ai]

1 issue found across 3 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="src/commands/broadcasts/send.ts">

<violation number="1" location="src/commands/broadcasts/send.ts:37">
P2: Scheduled sends still use "sent" spinner text, so interactive output remains incorrect when `--scheduled-at` is set.</violation>
</file>

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