Add experimental EFA support

Squashed commit of the following:

commit b7457791ab7ab4859ebf4a5ce173e1aaeed4c7fb
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sun Jun 15 08:18:46 2025 +0200

    changelog

commit 7f3d61066195cfc3c83a8fc1b2fc3743e7e6171c
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 19:55:51 2025 +0200

    Mark EFA backends as experimental for now

    For instance, VRR has very interesting issues when checking into departures
    that do not have real-time data yet.

commit 3370c0f6c25bd6b02cc4d56e9a3aba2a66d1151a
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 19:49:48 2025 +0200

    InTransit: remove debug output

commit deb5444fa2965228b537e86fce862436ef2e6e19
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 19:12:44 2025 +0200

    frontend js for checked-in view: never show fractional delays

commit d47ff9615b551bbd844a799be7717e9e74a04266
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 19:12:31 2025 +0200

    worker: add EFA support

commit 3a955c0105bf13d040a821e2c87a19694202cde6
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 17:48:46 2025 +0200

    EFA: checkin support

    worker support and cancellations are still missing

commit 19dea1ad13029d19cba38e7d1338718149c139fb
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 14:32:59 2025 +0200

    actions.js: pass on efa parameter

commit 8f18ff2c8f9f906a387dbe16d372e1c4b4a6f259
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 14:32:48 2025 +0200

    EFA: implement geolocation lookup

commit bce1139bab9aab167cdab910fa86085529d45b80
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Sat Jun 14 14:32:21 2025 +0200

    EFA: ->id is no longer supported, use ->id_num

commit e4397e6b1538ddfa71da9839d6011a73fadc528f
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Mon Jun 9 20:34:22 2025 +0200

    ... derp

commit e0c4cbf862a8f5a7bca0b1aceab3760af94093e9
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Mon Jun 9 18:28:35 2025 +0200

    database: it's dbris, not ris

commit bfb1e834ce6c3171011dc20b32117065960b8771
Merge: 42f9a00 f1da50f
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Mon Jun 9 18:20:51 2025 +0200

    Merge branch 'main' into efa-support

commit 42f9a00d98dbd675234c05b3e25c3e722cfdd7ba
Author: Birte Kristina Friesel <derf@finalrewind.org>
Date:   Wed Jan 8 18:11:28 2025 +0100

    EFA support (WiP)

1 files changed, 102 insertions, 0 deletions

diff --git a/lib/Travelynx/Helper/EFA.pm b/lib/Travelynx/Helper/EFA.pm
new file mode 100644
index 0000000..ba11764
--- /dev/null
+++ b/lib/Travelynx/Helper/EFA.pm
@@ -0,0 +1,102 @@
+package Travelynx::Helper::EFA;
+
+# Copyright (C) 2024 Birte Kristina Friesel
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+use strict;
+use warnings;
+use 5.020;
+
+use Travel::Status::DE::EFA;
+
+sub new {
+	my ( $class, %opt ) = @_;
+
+	my $version = $opt{version};
+
+	$opt{header}
+	  = { 'User-Agent' =>
+"travelynx/${version} on $opt{root_url} +https://finalrewind.org/projects/travelynx"
+	  };
+
+	return bless( \%opt, $class );
+}
+
+sub get_service {
+	my ( $self, $service ) = @_;
+
+	return Travel::Status::DE::EFA::get_service($service);
+}
+
+sub get_departures_p {
+	my ( $self, %opt ) = @_;
+
+	my $when = (
+		  $opt{timestamp}
+		? $opt{timestamp}->clone
+		: DateTime->now( time_zone => 'Europe/Berlin' )
+	)->subtract( minutes => $opt{lookbehind} );
+	return Travel::Status::DE::EFA->new_p(
+		service     => $opt{service},
+		name        => $opt{name},
+		datetime    => $when,
+		full_routes => 1,
+		cache       => $self->{realtime_cache},
+		promise     => 'Mojo::Promise',
+		user_agent  => $self->{user_agent}->request_timeout(5),
+	);
+}
+
+sub get_journey_p {
+	my ( $self, %opt ) = @_;
+
+	my $promise = Mojo::Promise->new;
+	my $agent   = $self->{user_agent};
+	my $stopseq;
+
+	if ( $opt{trip_id} =~ m{ ^ ([^@]*) @ ([^@]*) [(] ([^)]*) [)] (.*)  $ }x ) {
+		$stopseq = {
+			stateless => $1,
+			stop_id   => $2,
+			date      => $3,
+			key       => $4
+		};
+	}
+	else {
+		return $promise->reject("Invalid trip_id: $opt{trip_id}");
+	}
+
+	Travel::Status::DE::EFA->new_p(
+		service    => $opt{service},
+		stopseq    => $stopseq,
+		cache      => $self->{realtime_cache},
+		promise    => 'Mojo::Promise',
+		user_agent => $agent->request_timeout(10),
+	)->then(
+		sub {
+			my ($efa) = @_;
+			my $journey = $efa->result;
+
+			if ($journey) {
+				$self->{log}->debug("get_journey_p($opt{trip_id}): success");
+				$promise->resolve($journey);
+				return;
+			}
+			$self->{log}->debug("get_journey_p($opt{trip_id}): no journey");
+			$promise->reject('no journey');
+			return;
+		}
+	)->catch(
+		sub {
+			my ($err) = @_;
+			$self->{log}->debug("get_journey_p($opt{trip_id}): error $err");
+			$promise->reject($err);
+			return;
+		}
+	)->wait;
+
+	return $promise;
+}
+
+1;