Fix migration numbering collision and bump Dockerfile to Go 1.25

The `000016_task_template_id` and `000017_drop_task_template_regions_join`
migrations introduced on gitea collided with the existing unpadded 016/017
migrations (authtoken_created_at, fk_indexes). Renamed them to 021/022 so
they extend the shipped sequence instead of replacing real migrations.
Also removed the padded 000012-000015 files which were duplicate content
of the shipped 012-015 unpadded migrations.

Dockerfile builder image bumped from golang:1.24-alpine to 1.25-alpine to
match go.mod's `go 1.25` directive.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -16,7 +16,7 @@ COPY admin/ .
 RUN npm run build
 
 # Go build stage
-FROM --platform=$BUILDPLATFORM golang:1.24-alpine AS builder
+FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS builder
 ARG TARGETARCH
 
 # Install build dependencies

migrations/000012_webhook_event_log.down.sql

@@ -1 +0,0 @@
-DROP TABLE IF EXISTS webhook_event_log;

migrations/000012_webhook_event_log.up.sql

@@ -1,9 +0,0 @@
-CREATE TABLE IF NOT EXISTS webhook_event_log (
-    id SERIAL PRIMARY KEY,
-    event_id VARCHAR(255) NOT NULL,
-    provider VARCHAR(20) NOT NULL,
-    event_type VARCHAR(100) NOT NULL,
-    processed_at TIMESTAMPTZ DEFAULT NOW(),
-    payload_hash VARCHAR(64),
-    UNIQUE(provider, event_id)
-);

migrations/000013_business_constraints.down.sql

@@ -1,5 +0,0 @@
-ALTER TABLE notifications_notificationpreference DROP CONSTRAINT IF EXISTS uq_notif_pref_user;
-ALTER TABLE subscriptions_usersubscription DROP CONSTRAINT IF EXISTS uq_subscription_user;
-ALTER TABLE notifications_notification DROP CONSTRAINT IF EXISTS chk_notification_sent_consistency;
-ALTER TABLE subscriptions_usersubscription DROP CONSTRAINT IF EXISTS chk_subscription_tier;
-ALTER TABLE task_task DROP CONSTRAINT IF EXISTS chk_task_not_cancelled_and_archived;

migrations/000013_business_constraints.up.sql

@@ -1,19 +0,0 @@
--- Prevent task from being both cancelled and archived simultaneously
-ALTER TABLE task_task ADD CONSTRAINT chk_task_not_cancelled_and_archived
-    CHECK (NOT (is_cancelled = true AND is_archived = true));
-
--- Subscription tier must be a valid value
-ALTER TABLE subscriptions_usersubscription ADD CONSTRAINT chk_subscription_tier
-    CHECK (tier IN ('free', 'pro'));
-
--- Notification: sent_at must be set when sent is true
-ALTER TABLE notifications_notification ADD CONSTRAINT chk_notification_sent_consistency
-    CHECK ((sent = false) OR (sent = true AND sent_at IS NOT NULL));
-
--- One subscription per user
-ALTER TABLE subscriptions_usersubscription ADD CONSTRAINT uq_subscription_user
-    UNIQUE (user_id);
-
--- One notification preference per user
-ALTER TABLE notifications_notificationpreference ADD CONSTRAINT uq_notif_pref_user
-    UNIQUE (user_id);

migrations/000014_task_version_column.down.sql

@@ -1 +0,0 @@
-ALTER TABLE task_task DROP COLUMN IF EXISTS version;

migrations/000014_task_version_column.up.sql

@@ -1 +0,0 @@
-ALTER TABLE task_task ADD COLUMN IF NOT EXISTS version INTEGER NOT NULL DEFAULT 1;

migrations/000015_targeted_indexes.down.sql

@@ -1,3 +0,0 @@
-DROP INDEX IF EXISTS idx_document_residence_active;
-DROP INDEX IF EXISTS idx_notification_user_unread;
-DROP INDEX IF EXISTS idx_task_kanban_query;

migrations/000015_targeted_indexes.up.sql

@@ -1,14 +0,0 @@
--- Kanban: composite partial index for active task queries by residence with due date ordering
-CREATE INDEX IF NOT EXISTS idx_task_kanban_query
-    ON task_task (residence_id, next_due_date, due_date)
-    WHERE is_cancelled = false AND is_archived = false;
-
--- Notifications: partial index for unread count (hot query)
-CREATE INDEX IF NOT EXISTS idx_notification_user_unread
-    ON notifications_notification (user_id, read)
-    WHERE read = false;
-
--- Documents: partial index for active documents by residence
-CREATE INDEX IF NOT EXISTS idx_document_residence_active
-    ON documents_document (residence_id, is_active)
-    WHERE is_active = true;