Bypass account age check when feature flag is set (#32393)

Release Notes:

- N/A

crates/collab/src/llm.rs

@@ -7,6 +7,12 @@ pub use token::*;
 
 pub const AGENT_EXTENDED_TRIAL_FEATURE_FLAG: &str = "agent-extended-trial";
 
+/// The name of the feature flag that bypasses the account age check.
+pub const BYPASS_ACCOUNT_AGE_CHECK_FEATURE_FLAG: &str = "bypass-account-age-check";
+
+/// The minimum account age an account must have in order to use the LLM service.
+pub const MIN_ACCOUNT_AGE_FOR_LLM_USE: chrono::Duration = chrono::Duration::days(30);
+
 /// The default value to use for maximum spend per month if the user did not
 /// explicitly set a maximum spend.
 ///