Fix swapped Requires=/Wants= directives in Draupnir and Mjolnir systemd service templates

Commit 593b3157b ("Fix systemd service Wants for mjolnir and draupnir")
accidentally swapped the variable loops: `systemd_wanted_services_list`
ended up generating `Requires=`/`After=` directives and
`systemd_required_services_list` ended up generating `Wants=` directives —
the opposite of what the variable names mean and how every other
bot/bridge service template in the playbook works.

This caused these bots to only `Wants=` (not `Requires=`/`After=`) their
dependencies like matrix-traefik.service, so systemd didn't guarantee
ordering. During all-at-once restarts, the bots would start before traefik
was ready, fail with DNS resolution errors, and crash.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

roles/custom/matrix-bot-draupnir/templates/systemd/matrix-bot-draupnir.service.j2

@@ -1,11 +1,11 @@
 #jinja2: lstrip_blocks: True
 [Unit]
 Description=Matrix Draupnir bot
-{% for service in matrix_bot_draupnir_systemd_wanted_services_list %}
+{% for service in matrix_bot_draupnir_systemd_required_services_list %}
 Requires={{ service }}
 After={{ service }}
 {% endfor %}
-{% for service in matrix_bot_draupnir_systemd_required_services_list %}
+{% for service in matrix_bot_draupnir_systemd_wanted_services_list %}
 Wants={{ service }}
 {% endfor %}
 DefaultDependencies=no

roles/custom/matrix-bot-mjolnir/templates/systemd/matrix-bot-mjolnir.service.j2

@@ -1,11 +1,11 @@
 #jinja2: lstrip_blocks: True
 [Unit]
 Description=Matrix Mjolnir bot
-{% for service in matrix_bot_mjolnir_systemd_wanted_services_list %}
+{% for service in matrix_bot_mjolnir_systemd_required_services_list %}
 Requires={{ service }}
 After={{ service }}
 {% endfor %}
-{% for service in matrix_bot_mjolnir_systemd_required_services_list %}
+{% for service in matrix_bot_mjolnir_systemd_wanted_services_list %}
 Wants={{ service }}
 {% endfor %}
 DefaultDependencies=no

roles/custom/matrix-synapse/defaults/main.yml

@@ -1503,6 +1503,14 @@ matrix_synapse_ext_synapse_s3_storage_provider_update_db_day_count: 0
 # This is a systemd timer OnCalendar definition. Learn more here: https://man.archlinux.org/man/systemd.time.7#CALENDAR_EVENTS
 matrix_synapse_ext_synapse_s3_storage_provider_periodic_migration_schedule: '*-*-* 05:00:00'
 
+# List of systemd services that matrix-synapse-s3-storage-provider-migrate.service requires.
+# We only depend on matrix-synapse.service here, because its own dependencies (Postgres, Docker, etc.)
+# are transitively resolved by systemd.
+matrix_synapse_ext_synapse_s3_storage_provider_migrate_systemd_required_services_list: ['matrix-synapse.service']
+
+# List of systemd services that matrix-synapse-s3-storage-provider-migrate.service wants
+matrix_synapse_ext_synapse_s3_storage_provider_migrate_systemd_wanted_services_list: []
+
 # Synapse module to automatically accept room invites.
 #
 # Since Synapse v1.109.0 (https://github.com/element-hq/synapse/pull/17147),

roles/custom/matrix-synapse/templates/synapse/ext/s3-storage-provider/systemd/matrix-synapse-s3-storage-provider-migrate.service.j2

@@ -1,5 +1,14 @@
+#jinja2: lstrip_blocks: True
 [Unit]
 Description=Migrates locally-stored Synapse media store files to S3
+{% for service in matrix_synapse_ext_synapse_s3_storage_provider_migrate_systemd_required_services_list %}
+Requires={{ service }}
+After={{ service }}
+{% endfor %}
+{% for service in matrix_synapse_ext_synapse_s3_storage_provider_migrate_systemd_wanted_services_list %}
+Wants={{ service }}
+{% endfor %}
+DefaultDependencies=no
 
 [Service]
 Type=oneshot