Fix database undefined values causing SQL.js binding errors

Convert undefined values to null in database operations to prevent
"tried to bind a value of an unknown type" errors in SQL.js worker.

- Fix $insertContact() method undefined-to-null conversion
- Fix $insertEntity() method undefined-to-null conversion
- Preserve boolean false/0 values vs null distinction
- Maintain parameterized queries for SQL injection protection
- Fix contact creation errors in ContactsView component

Resolves database binding failures when inserting contacts with
undefined properties. All linting errors resolved.

src/views/ContactsView.vue

@@ -366,7 +366,7 @@ import TopMessage from "../components/TopMessage.vue";
 import { APP_SERVER, AppString, NotificationIface } from "../constants/app";
 import { logConsoleAndDb } from "../db/index";
 import { Contact } from "../db/tables/contacts";
-import * as databaseUtil from "../db/databaseUtil";
+// Removed unused import: databaseUtil - migrated to PlatformServiceMixin
 import { getContactJwtFromJwtUrl } from "../libs/crypto";
 import { decodeEndorserJwt } from "../libs/crypto/vc";
 import {
@@ -438,30 +438,30 @@ export default class ContactsView extends Vue {
   libsUtil = libsUtil;
 
   public async created() {
-    const settings = await databaseUtil.retrieveSettingsForActiveAccount();
-    this.activeDid = settings.activeDid || "";
-    this.apiServer = settings.apiServer || "";
-    this.isRegistered = !!settings.isRegistered;
+    const settingsRow = await this.$getSettingsRow([
+      "activeDid",
+      "apiServer",
+      "isRegistered",
+      "showContactGivesInline",
+      "hideRegisterPromptOnNewContact",
+    ]);
+    this.activeDid = (settingsRow?.[0] as string) || "";
+    this.apiServer = (settingsRow?.[1] as string) || "";
+    this.isRegistered = !!settingsRow?.[2];
 
     // if these detect a query parameter, they can and then redirect to this URL without a query parameter
     // to avoid problems when they reload or they go forward & back and it tries to reprocess
     await this.processContactJwt();
     await this.processInviteJwt();
 
-    this.showGiveNumbers = !!settings.showContactGivesInline;
-    this.hideRegisterPromptOnNewContact =
-      !!settings.hideRegisterPromptOnNewContact;
+    this.showGiveNumbers = !!settingsRow?.[3];
+    this.hideRegisterPromptOnNewContact = !!settingsRow?.[4];
 
     if (this.showGiveNumbers) {
       this.loadGives();
     }
 
-    const dbAllContacts = await this.$dbQuery(
-      "SELECT * FROM contacts ORDER BY name",
-    );
-    this.contacts = databaseUtil.mapQueryResultToValues(
-      dbAllContacts,
-    ) as unknown as Contact[];
+    this.contacts = await this.$getAllContacts();
   }
 
   private async processContactJwt() {
@@ -518,9 +518,7 @@ export default class ContactsView extends Vue {
         if (response.status != 201) {
           throw { error: { response: response } };
         }
-        await databaseUtil.updateDidSpecificSettings(this.activeDid, {
-          isRegistered: true,
-        });
+        await this.$updateSettings({ isRegistered: true }, this.activeDid);
         this.isRegistered = true;
         this.$notify(
           {
@@ -844,12 +842,7 @@ export default class ContactsView extends Vue {
         this.danger("An error occurred. Some contacts may have been added.");
       }
 
-      const dbAllContacts = await this.$dbQuery(
-        "SELECT * FROM contacts ORDER BY name",
-      );
-      this.contacts = databaseUtil.mapQueryResultToValues(
-        dbAllContacts,
-      ) as unknown as Contact[];
+      this.contacts = await this.$getAllContacts();
 
       return;
     }
@@ -923,11 +916,7 @@ export default class ContactsView extends Vue {
     lineRaw: string,
   ): Promise<IndexableType> {
     const newContact = libsUtil.csvLineToContact(lineRaw);
-    const { sql, params } = databaseUtil.generateInsertStatement(
-      newContact as unknown as Record<string, unknown>,
-      "contacts",
-    );
-    await this.$dbExec(sql, params);
+    await this.$insertContact(newContact);
     return newContact.did || "";
   }
 
@@ -941,11 +930,7 @@ export default class ContactsView extends Vue {
       return;
     }
 
-    const { sql, params } = databaseUtil.generateInsertStatement(
-      newContact as unknown as Record<string, unknown>,
-      "contacts",
-    );
-    const contactPromise = this.$dbExec(sql, params);
+    const contactPromise = this.$insertContact(newContact);
 
     return contactPromise
       .then(() => {
@@ -975,7 +960,7 @@ export default class ContactsView extends Vue {
                   text: "Do you want to register them?",
                   onCancel: async (stopAsking?: boolean) => {
                     if (stopAsking) {
-                      await databaseUtil.updateDefaultSettings({
+                      await this.$updateSettings({
                         hideRegisterPromptOnNewContact: stopAsking,
                       });
 
@@ -984,7 +969,7 @@ export default class ContactsView extends Vue {
                   },
                   onNo: async (stopAsking?: boolean) => {
                     if (stopAsking) {
-                      await databaseUtil.updateDefaultSettings({
+                      await this.$updateSettings({
                         hideRegisterPromptOnNewContact: stopAsking,
                       });
 
@@ -1043,10 +1028,7 @@ export default class ContactsView extends Vue {
       );
       if (regResult.success) {
         contact.registered = true;
-        await this.$dbExec("UPDATE contacts SET registered = ? WHERE did = ?", [
-          true,
-          contact.did,
-        ]);
+        await this.$updateContact(contact.did, { registered: true });
 
         this.$notify(
           {
@@ -1253,7 +1235,7 @@ export default class ContactsView extends Vue {
   private async toggleShowContactAmounts() {
     const newShowValue = !this.showGiveNumbers;
     try {
-      await databaseUtil.updateDefaultSettings({
+      await this.$updateSettings({
         showContactGivesInline: newShowValue,
       });
     } catch (err) {