system: information panel and event log; about: download this build's source

System page laid out after 3CX's admin dashboard: a System information panel (version,
host name, company, public IP, LAN IPs, ports, telephony, restart needed, copy buttons,
how to restart) and an Event log panel (system_events, 90 days: trunk down/up, Asterisk
down/up, restart needed, config failed, 911, public IP changed, backups, disk) with Load
more and a CSV download.

About (/about, no sign-in, linked from the login page, My phone and System): AGPL-3.0
notice, credits, the repository link, and "Code v<version>", which downloads
selfphone.tar.gz: the api image now tars its own build context (no .env, data,
node_modules, build output or .git) before installing anything.

Task: M11-T7

apps/api/test/schema.test.ts

@@ -106,11 +106,11 @@ describe.skipIf(!hasTestDb)('schema matches spec 02', () => {
   beforeAll(async () => ({ db, drop } = await createTestDb()));
   afterAll(() => drop?.());
 
-  it('creates all 40 tables', async () => {
+  it('creates all 41 tables', async () => {
     const r = await db.execute(
       sql`select count(*)::int as n from information_schema.tables where table_schema = 'public'`,
     );
-    expect(r.rows[0]).toEqual({ n: 40 });
+    expect(r.rows[0]).toEqual({ n: 41 });
   });
 
   it.each(Object.keys(EXPECTED))('%s columns', async (table) => {