Feature/914 915 916 917 escrow release controls

contracts/invoice-escrow/src/errors.rs

@@ -46,4 +46,49 @@ pub enum Error {
     AlreadyFinalised = 18,
     /// Caller is not the blacklisted payer.
     NotBlacklistedPayer = 19,
+    /// Co-signer list is empty, has duplicates, exceeds the maximum, or the
+    /// threshold is outside `1..=signers.len()`.
+    InvalidCosignerConfig = 20,
+    /// Caller is not one of the invoice's configured co-signers.
+    NotCosigner = 21,
+    /// Co-signer has already approved or rejected this invoice.
+    AlreadyVoted = 22,
+    /// Release requires co-signer approval that has not yet reached threshold.
+    ApprovalRequired = 23,
+    /// Co-signers rejected the release; threshold can no longer be reached.
+    ApprovalRejected = 24,
+    /// Co-signer has not voted, so there is nothing to revoke.
+    NotVoted = 25,
+    /// Co-signer configuration cannot change once voting has started.
+    CosignersLocked = 26,
+    /// No co-signer approval is configured for this invoice.
+    NoCosigners = 27,
+    /// Oracle condition is malformed (non-positive threshold, zero staleness
+    /// window, or fallback identical to the primary oracle).
+    InvalidOracleConfig = 28,
+    /// No oracle could be reached or none returned a price for the asset.
+    OracleUnavailable = 29,
+    /// The oracle price is older than the condition's staleness window.
+    OracleStalePrice = 30,
+    /// The oracle returned a non-positive price or a future timestamp.
+    OracleInvalidPrice = 31,
+    /// The oracle price does not satisfy the release condition.
+    OracleConditionNotMet = 32,
+    /// No oracle condition is configured for this invoice.
+    NoOracleCondition = 33,
+    /// Schedule is malformed: `release_at` not in the future, or the ledger
+    /// delay exceeds the maximum / overflows.
+    InvalidSchedule = 34,
+    /// The scheduled release time has not been reached yet.
+    ReleaseNotYetDue = 35,
+    /// The scheduled minimum ledger count has not elapsed yet.
+    ScheduleLedgerNotReached = 36,
+    /// No active release schedule exists for this invoice.
+    ScheduleNotFound = 37,
+    /// The refund grace period is still running; refund is not permitted yet.
+    RefundGraceActive = 38,
+    /// Grace period exceeds `MAX_REFUND_GRACE_SECS`.
+    InvalidGracePeriod = 39,
+    /// The refund grace period has already elapsed or been waived.
+    RefundGraceElapsed = 40,
 }