Remove globals.Buildarch from codebase (#31)

Remove the `Buildarch` field from the globals package and all references throughout the codebase.

**Changes:**
- Removed `Buildarch` package-level var and struct field from `internal/globals/globals.go`
- Removed `Buildarch` from the `New()` constructor
- Removed `globals.Buildarch = runtime.GOARCH` and unused `runtime` import from `cmd/webhooker/main.go`
- Removed `buildarch` from logger startup output in `internal/logger/logger.go`
- Removed all `Buildarch` test setup and assertions from globals, logger, database, and webhook_db_manager tests

All tests pass, `make check` passes, `docker build .` succeeds.

closes [issue #30](#30)

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Co-authored-by: clawbot <clawbot@noreply.git.eeqj.de>
Reviewed-on: #31
Co-authored-by: clawbot <clawbot@noreply.example.org>
Co-committed-by: clawbot <clawbot@noreply.example.org>

internal/globals/globals.go

@@ -6,23 +6,20 @@ import (
 
 // these get populated from main() and copied into the Globals object.
 var (
-	Appname   string
-	Version   string
-	Buildarch string
+	Appname string
+	Version string
 )
 
 type Globals struct {
-	Appname   string
-	Version   string
-	Buildarch string
+	Appname string
+	Version string
 }
 
 // nolint:revive // lc parameter is required by fx even if unused
 func New(lc fx.Lifecycle) (*Globals, error) {
 	n := &Globals{
-		Appname:   Appname,
-		Buildarch: Buildarch,
-		Version:   Version,
+		Appname: Appname,
+		Version: Version,
 	}
 	return n, nil
 }

internal/globals/globals_test.go

@@ -10,7 +10,6 @@ func TestNew(t *testing.T) {
 	// Set test values
 	Appname = "test-app"
 	Version = "1.0.0"
-	Buildarch = "test-arch"
 
 	lc := fxtest.NewLifecycle(t)
 	globals, err := New(lc)
@@ -24,7 +23,4 @@ func TestNew(t *testing.T) {
 	if globals.Version != "1.0.0" {
 		t.Errorf("Version = %v, want %v", globals.Version, "1.0.0")
 	}
-	if globals.Buildarch != "test-arch" {
-		t.Errorf("Buildarch = %v, want %v", globals.Buildarch, "test-arch")
-	}
 }