Add tm_server with SQLite, Svelte UI, and task-master TUI sync.

Introduces the web backend (auth, RBAC, project tokens, revisions),
YouTrack-or-taskmaster backend choice in the TUI, and a first-pass
embedded Svelte UI. The frontend is functional but needs a major rework.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/sqlite/store_test.go

@@ -0,0 +1,98 @@
+package sqlite
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+
+	"task/internal/ticket"
+)
+
+func TestStoresRoundTrip(t *testing.T) {
+	db, err := Open(filepath.Join(t.TempDir(), "test.db"), []byte("test-secret"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	ps := NewProjectStore(db)
+	if err := ps.Ensure("inbox"); err != nil {
+		t.Fatal(err)
+	}
+	ts := NewTicketStore(db)
+	created, err := ts.Create(ticket.Ticket{Title: "Hello", ProjectID: "inbox", Status: ticket.StatusTodo})
+	if err != nil {
+		t.Fatal(err)
+	}
+	got, err := ts.Get(created.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got.Title != "Hello" {
+		t.Fatalf("title=%q", got.Title)
+	}
+	got.Title = "Updated"
+	if err := ts.Update(got); err != nil {
+		t.Fatal(err)
+	}
+	if err := ts.MarkSynced(got.ID); err != nil {
+		t.Fatal(err)
+	}
+	synced, _ := ts.Get(got.ID)
+	if synced.SyncedAt.IsZero() || !synced.SyncedAt.Equal(synced.UpdatedAt) {
+		t.Fatalf("syncedAt=%v updatedAt=%v", synced.SyncedAt, synced.UpdatedAt)
+	}
+
+	timeStore := NewTimeStore(db)
+	_, err = timeStore.Create(ticket.TimeEntry{
+		TicketID:  created.ID,
+		ProjectID: "inbox",
+		Duration:  time.Hour,
+		Source:    ticket.SourceManual,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	sum, err := timeStore.SumByTicket(created.ID)
+	if err != nil || sum != time.Hour {
+		t.Fatalf("sum=%v err=%v", sum, err)
+	}
+
+	u, err := db.CreateUser("admin", "secret", true)
+	if err != nil {
+		t.Fatal(err)
+	}
+	token, _, err := db.CreateSession(u.ID, time.Hour)
+	if err != nil {
+		t.Fatal(err)
+	}
+	me, err := db.UserFromSession(token)
+	if err != nil || me.Username != "admin" {
+		t.Fatalf("session user=%v err=%v", me, err)
+	}
+	if err := db.SetMember("inbox", u.ID, RoleOwner); err != nil {
+		t.Fatal(err)
+	}
+	role, _ := db.MemberRole("inbox", u.ID)
+	if role != RoleOwner {
+		t.Fatalf("role=%s", role)
+	}
+
+	_, err = db.AppendRevision("ticket", created.ID, "inbox", "update", u.ID, synced)
+	if err != nil {
+		t.Fatal(err)
+	}
+	revs, err := db.ListRevisions("ticket", created.ID)
+	if err != nil || len(revs) != 1 {
+		t.Fatalf("revs=%v err=%v", revs, err)
+	}
+
+	conn, err := db.CreateConnection("YT", "youtrack", "https://yt.example", "instance", "tok-123", u.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	loaded, err := db.GetConnection(conn.ID)
+	if err != nil || loaded.Token != "tok-123" {
+		t.Fatalf("token=%q err=%v", loaded.Token, err)
+	}
+}