Clean up alert channel constructs and add back missing ones#233

Draft

guolau wants to merge 14 commits intomainfrom

guolau/add-missing-cli-constructs

Commits on Mar 24, 2026

fix: add back missing CLI alert channel constructs
guolau
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fix: added back general AlertChannel information and link back to new fromId() section
guolau
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feat: remove unverified AI content from EmailAlertChannel page
guolau
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feat: remove unverified AI content from SmsAlertChannel page
guolau
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feat: improve wording of SMS supported countries link
guolau
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feat: remove unverified AI content from PhoneCallAlertChannel page
guolau
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feat: remove unverified AI content from SlackAlertChannel page
guolau
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feat: remove unverified AI content from WebhookAlertChannel page
guolau
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feat: replace WebhookAlertChannel basic example with a simpler one
guolau
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