db: Foreign Keys für blocker- und Tageseintrag-Verweise (Migration 0017)
Bisher reine uuid-Spalten ohne referenzielle Integritaet -> Orphan-Risiko, wenn das Ziel geloescht wird. Jetzt echte FKs mit ON DELETE SET NULL: - day_entry.blocker_id -> blocker - blocker.area_id -> area - blocker.project_id -> project Migration bereinigt vorab verwaiste IDs (UPDATE ... SET NULL), damit ADD CONSTRAINT auf Altdaten nicht bricht. Verifiziert: alle 18 Migrationen laufen gegen frische Postgres 16 durch, FKs angelegt. (todo.bezug_id / time_entry.bezug_id bleiben FK-frei: echt polymorph ueber bezug_kind project/deal/campaign — kein einzelner FK moeglich.) Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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@@ -231,7 +231,7 @@ export const dayEntry = pgTable(
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ampel: text('ampel', { enum: ['green', 'amber', 'red'] }),
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trend: text('trend', { enum: ['besser', 'gleich', 'schlechter'] }),
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url: text('url'),
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blockerId: uuid('blocker_id'),
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blockerId: uuid('blocker_id').references(() => blocker.id, { onDelete: 'set null' }),
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editLockedAt: timestamp('edit_locked_at', { withTimezone: true }),
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publishedAt: timestamp('published_at', { withTimezone: true }),
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createdAt: timestamp('created_at', { withTimezone: true }).notNull().defaultNow(),
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@@ -442,8 +442,8 @@ export const blocker = pgTable(
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.primaryKey(),
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title: text('title').notNull(),
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description: text('description'),
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areaId: uuid('area_id'),
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projectId: uuid('project_id'),
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areaId: uuid('area_id').references(() => area.id, { onDelete: 'set null' }),
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projectId: uuid('project_id').references(() => project.id, { onDelete: 'set null' }),
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ownerUserId: uuid('owner_user_id').references(() => user.id, { onDelete: 'set null' }),
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openedBy: uuid('opened_by')
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.notNull()
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