feat(domain): add ProcessTable with create, get, and destroy

crates/domain/src/process/tests.rs

@@ -76,3 +76,55 @@ fn capabilities_mut_accessible() {
     let mut p = test_process(0);
     let _caps = p.capabilities_mut();
 }
+
+// --- ProcessTable tests ---
+
+#[test]
+fn table_create_and_lookup() {
+    let mut table = ProcessTable::new();
+    let id = table.create(CapabilityTable::new(), None).unwrap();
+    assert_eq!(table.get(id).unwrap().id(), id);
+}
+
+#[test]
+fn table_create_returns_unique_ids() {
+    let mut table = ProcessTable::new();
+    let a = table.create(CapabilityTable::new(), None).unwrap();
+    let b = table.create(CapabilityTable::new(), None).unwrap();
+    assert_ne!(a, b);
+}
+
+#[test]
+fn table_destroy_then_get_fails() {
+    let mut table = ProcessTable::new();
+    let id = table.create(CapabilityTable::new(), None).unwrap();
+    table.destroy(id).unwrap();
+    assert!(table.get(id).is_err());
+}
+
+#[test]
+fn table_full_returns_error() {
+    let mut table = ProcessTable::new();
+    for _ in 0..MAX_PROCESSES {
+        table.create(CapabilityTable::new(), None).unwrap();
+    }
+    assert!(table.create(CapabilityTable::new(), None).is_err());
+}
+
+#[test]
+fn table_destroy_reuses_slot() {
+    let mut table = ProcessTable::new();
+    let id = table.create(CapabilityTable::new(), None).unwrap();
+    table.destroy(id).unwrap();
+    let new_id = table.create(CapabilityTable::new(), None).unwrap();
+    assert_eq!(id, new_id);
+}
+
+#[test]
+fn table_get_mut_allows_modification() {
+    let mut table = ProcessTable::new();
+    let id = table.create(CapabilityTable::new(), None).unwrap();
+    let p = table.get_mut(id).unwrap();
+    p.add_thread(thread(0)).unwrap();
+    assert_eq!(table.get(id).unwrap().thread_ids().count(), 1);
+}