final: refactor for removal of system package and reduction of interactions to state package

State query command has been moved to main where it belongs, "system" information are now fetched in app.New and stored in *App with accessors for relevant values. Exit (cleanup-related) functions are separated into its dedicated "final" package.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

internal/app/x.go

@@ -2,6 +2,7 @@ package app
 
 import (
 	"fmt"
+	"git.ophivana.moe/cat/fortify/internal/final"
 	"os"
 
 	"git.ophivana.moe/cat/fortify/internal/state"
@@ -16,16 +17,16 @@ func (a *App) ShareX() {
 
 	// discovery X11 and grant user permission via the `ChangeHosts` command
 	if d, ok := os.LookupEnv(display); !ok {
-		state.Fatal("X11: DISPLAY not set")
+		final.Fatal("X11: DISPLAY not set")
 	} else {
 		// add environment variable for new process
 		a.AppendEnv(display, d)
 
 		verbose.Printf("X11: Adding XHost entry SI:localuser:%s to display '%s'\n", a.Username, d)
 		if err := xcb.ChangeHosts(xcb.HostModeInsert, xcb.FamilyServerInterpreted, "localuser\x00"+a.Username); err != nil {
-			state.Fatal(fmt.Sprintf("Error adding XHost entry to '%s':", d), err)
+			final.Fatal(fmt.Sprintf("Error adding XHost entry to '%s':", d), err)
 		} else {
-			state.XcbActionComplete()
+			final.XcbActionComplete()
 		}
 	}
 }