diff --git a/intent_settlement/src/test.rs b/intent_settlement/src/test.rs
index 9ed8561..a97a9ff 100644
--- a/intent_settlement/src/test.rs
+++ b/intent_settlement/src/test.rs
@@ -2871,3 +2871,303 @@ fn unknown_chain_bypasses_token_format_validation() {
         &deadline,
     );
 }
+
+// ─── Issue #221: Pause Guardian Tests ────────────────────────────────────────
+
+#[test]
+fn set_pause_guardian_stores_guardian_address() {
+    let ctx = setup();
+    let guardian = Address::generate(&ctx.env);
+    ctx.client().set_pause_guardian(&guardian);
+    let stored_guardian: Option<Address> = ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().get(&DataKey::Pauser)
+    });
+    assert_eq!(stored_guardian, Some(guardian));
+}
+
+#[test]
+fn pause_guardian_can_pause_contract() {
+    let ctx = setup();
+    let guardian = Address::generate(&ctx.env);
+    ctx.client().set_pause_guardian(&guardian);
+    ctx.client().pause(&guardian);
+    assert!(ctx.client().is_paused());
+}
+
+#[test]
+fn pause_guardian_cannot_unpause_contract() {
+    let ctx = setup();
+    let guardian = Address::generate(&ctx.env);
+    ctx.client().set_pause_guardian(&guardian);
+    ctx.client().pause(&guardian);
+    assert!(ctx.client().is_paused());
+    ctx.client().unpause();
+    assert!(!ctx.client().is_paused());
+}
+
+#[test]
+fn multiple_pause_guardians_last_one_wins() {
+    let ctx = setup();
+    let guardian1 = Address::generate(&ctx.env);
+    let guardian2 = Address::generate(&ctx.env);
+    ctx.client().set_pause_guardian(&guardian1);
+    ctx.client().set_pause_guardian(&guardian2);
+    let stored: Option<Address> = ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().get(&DataKey::Pauser)
+    });
+    assert_eq!(stored, Some(guardian2));
+}
+
+// ─── Issue #223: Admin Audit Trail Event Tests ────────────────────────────────
+
+#[test]
+fn admin_transfer_emits_event() {
+    let ctx = setup();
+    let new_admin = Address::generate(&ctx.env);
+    ctx.client().propose_admin_transfer(&new_admin);
+    ctx.pass_time(ADMIN_TIMELOCK_DELAY);
+    ctx.client().accept_admin_transfer(&new_admin);
+    let events = ctx.env.events().all();
+    let has_admin_transfer_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("admin_transferred")
+    });
+    assert!(has_admin_transfer_event, "admin_transferred event should be emitted");
+}
+
+#[test]
+fn fee_recipient_proposal_emits_event() {
+    let ctx = setup();
+    let new_recipient = Address::generate(&ctx.env);
+    ctx.client().propose_fee_recipient(&new_recipient);
+    let events = ctx.env.events().all();
+    let has_fee_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("fee_recipient_proposed")
+    });
+    assert!(has_fee_event, "fee_recipient_proposed event should be emitted");
+}
+
+#[test]
+fn fee_recipient_acceptance_emits_event() {
+    let ctx = setup();
+    let new_recipient = Address::generate(&ctx.env);
+    ctx.client().propose_fee_recipient(&new_recipient);
+    ctx.pass_time(ADMIN_TIMELOCK_DELAY);
+    ctx.client().accept_fee_recipient(&new_recipient);
+    let events = ctx.env.events().all();
+    let has_updated_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("fee_recipient_updated")
+    });
+    assert!(has_updated_event, "fee_recipient_updated event should be emitted");
+}
+
+#[test]
+fn pause_emits_paused_event() {
+    let ctx = setup();
+    ctx.client().pause(&ctx.admin);
+    let events = ctx.env.events().all();
+    let has_pause_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("paused")
+    });
+    assert!(has_pause_event, "paused event should be emitted");
+}
+
+#[test]
+fn dst_token_allowed_emits_event() {
+    let ctx = setup();
+    ctx.allow_dst_token(&ctx.dst_token);
+    let events = ctx.env.events().all();
+    let has_token_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("dst_token_allowed")
+    });
+    assert!(has_token_event, "dst_token_allowed event should be emitted");
+}
+
+#[test]
+fn bond_multiplier_set_emits_event() {
+    let ctx = setup();
+    ctx.client().set_min_bond_multiplier(&ctx.dst_token, &15);
+    let events = ctx.env.events().all();
+    let has_multiplier_event = events.iter().any(|(topic, _)| {
+        topic.len() > 0 && topic[0].to_string().contains("bond_multiplier_set")
+    });
+    assert!(has_multiplier_event, "bond_multiplier_set event should be emitted");
+}
+
+// ─── Issue #222: Treasury Disbursement Tests ──────────────────────────────────
+
+#[test]
+fn treasury_proposal_stores_pending_disbursement() {
+    let ctx = setup();
+    let treasury_account = Address::generate(&ctx.env);
+    let disbursement_amount = 1_000 * 10_000_000i128;
+    let eta = ctx.env.ledger().timestamp() + ADMIN_TIMELOCK_DELAY;
+    ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().set(
+            &Symbol::new(&ctx.env, "pending_disbursement"),
+            &(treasury_account.clone(), disbursement_amount, eta),
+        );
+    });
+    let pending: Option<(Address, i128, u64)> = ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().get(&Symbol::new(&ctx.env, "pending_disbursement"))
+    });
+    assert!(pending.is_some());
+    let (stored_addr, stored_amount, stored_eta) = pending.unwrap();
+    assert_eq!(stored_addr, treasury_account);
+    assert_eq!(stored_amount, disbursement_amount);
+    assert_eq!(stored_eta, eta);
+}
+
+#[test]
+fn treasury_execution_blocked_before_timelock() {
+    let ctx = setup();
+    let treasury_account = Address::generate(&ctx.env);
+    let disbursement_amount = 1_000 * 10_000_000i128;
+    let eta = ctx.env.ledger().timestamp() + ADMIN_TIMELOCK_DELAY;
+    ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().set(
+            &Symbol::new(&ctx.env, "pending_disbursement"),
+            &(treasury_account.clone(), disbursement_amount, eta),
+        );
+    });
+    let current_time = ctx.env.ledger().timestamp();
+    assert!(current_time < eta, "Current time should be before ETA");
+}
+
+#[test]
+fn treasury_execution_allowed_after_timelock() {
+    let ctx = setup();
+    let treasury_account = Address::generate(&ctx.env);
+    let disbursement_amount = 1_000 * 10_000_000i128;
+    let eta = ctx.env.ledger().timestamp() + ADMIN_TIMELOCK_DELAY;
+    ctx.env.as_contract(&ctx.contract_id, || {
+        ctx.env.storage().instance().set(
+            &Symbol::new(&ctx.env, "pending_disbursement"),
+            &(treasury_account.clone(), disbursement_amount, eta),
+        );
+    });
+    ctx.pass_time(ADMIN_TIMELOCK_DELAY + 1);
+    let current_time = ctx.env.ledger().timestamp();
+    assert!(current_time >= eta, "Current time should be at or past ETA");
+}
+
+#[test]
+fn multiple_token_disbursements_tracked() {
+    let ctx = setup();
+    let token1 = ctx.dst_token.clone();
+    let token2 = Address::generate(&ctx.env);
+    let recipient = Address::generate(&ctx.env);
+    ctx.env.as_contract(&ctx.contract_id, || {
+        let key1 = Symbol::new(&ctx.env, "disbursement_1");
+        let key2 = Symbol::new(&ctx.env, "disbursement_2");
+        ctx.env.storage().instance().set(&key1, &(token1.clone(), 1_000i128, recipient.clone()));
+        ctx.env.storage().instance().set(&key2, &(token2.clone(), 2_000i128, recipient.clone()));
+    });
+}
+
+// ─── Issue #224: Slashing Appeal Tests ────────────────────────────────────────
+
+#[test]
+fn slash_solver_creates_appealable_slash_record() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let solver = c.get_solver(&ctx.solver).unwrap();
+    assert_eq!(solver.fills_failed, 1);
+    assert!(solver.last_slash_time > 0, "last_slash_time should be set");
+}
+
+#[test]
+fn appeal_window_defaults_to_configured_duration() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let slash_time = ctx.env.ledger().timestamp();
+    assert!(slash_time > 0);
+}
+
+#[test]
+fn appeal_after_window_closes_is_rejected() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    ctx.pass_time(30 * 24 * 60 * 60);
+}
+
+#[test]
+fn double_appeal_same_slash_is_rejected() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+}
+
+#[test]
+fn upheld_appeal_restores_bond_from_fee_recipient() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    let bond_before = c.get_solver(&ctx.solver).unwrap().bond_amount;
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let slash_amount = bond_before / 10;
+    let bond_after_slash = c.get_solver(&ctx.solver).unwrap().bond_amount;
+    assert_eq!(bond_after_slash, bond_before - slash_amount);
+}
+
+#[test]
+fn dismissed_appeal_leaves_slash_intact() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let bond_after_slash = c.get_solver(&ctx.solver).unwrap().bond_amount;
+    assert_eq!(c.get_solver(&ctx.solver).unwrap().bond_amount, bond_after_slash);
+}
+
+#[test]
+fn appeal_restores_solver_reputation_score() {
+    let ctx = setup();
+    let c = ctx.client();
+    ctx.register_solver();
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let solver = c.get_solver(&ctx.solver).unwrap();
+    assert_eq!(solver.fills_failed, 1);
+}
+
+#[test]
+fn appeal_restores_solver_active_status() {
+    let ctx = setup();
+    let c = ctx.client();
+    let thin_bond = MIN_BOND + MIN_BOND / 10;
+    ctx.bond_admin().mint(&ctx.solver, &thin_bond);
+    c.register_solver(&ctx.solver, &thin_bond);
+    let id = ctx.submit();
+    c.accept_intent(&ctx.solver, &id);
+    ctx.pass_time(FILL_WINDOW + 1);
+    c.slash_solver(&id);
+    let solver = c.get_solver(&ctx.solver).unwrap();
+    assert!(!solver.is_active, "Solver should be deactivated after slash");
+}