L13 Planung: Datenmodell (Kolonnenkapazität, Dauer, Geocoding-Cache) und Planungsregeln

Migration 20260915120000_planung (nur Spalten): Team.dailyCapacityMinutes/workingDays, OrderType.defaultDurationMinutes (+ Backfill Standardarten), WorkOrder.plannedDurationMinutes, Site.geocodedAt/geocodeStatus/geocodeQuery. Client-sichere Regeln: Haversine, Tage/Werktage, Dauer, Kolonnenkapazität, Konflikte inkl. Hinweis crew_incomplete, Vereinigung von Arbeitssegmenten, Fahrzeitschätzung.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

prisma/migrations/20260915120000_planung/migration.sql

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+-- L13 Planung: capacity planning + geocoding cache. Columns only (no new table → RLS unchanged,
+-- no TENANT_MODELS change). No personal references (no DSGVO pii-fields change).
+
+-- AlterTable
+ALTER TABLE "order_types" ADD COLUMN     "default_duration_minutes" INTEGER;
+
+-- AlterTable
+ALTER TABLE "sites" ADD COLUMN     "geocode_query" TEXT,
+ADD COLUMN     "geocode_status" TEXT,
+ADD COLUMN     "geocoded_at" TIMESTAMP(3);
+
+-- AlterTable
+-- Team = crew (Kolonne): capacity is the crew's working day in minutes, not person-hours.
+ALTER TABLE "teams" ADD COLUMN     "daily_capacity_minutes" INTEGER NOT NULL DEFAULT 480,
+ADD COLUMN     "working_days" INTEGER NOT NULL DEFAULT 31;
+
+-- AlterTable
+ALTER TABLE "work_orders" ADD COLUMN     "planned_duration_minutes" INTEGER;
+
+-- Backfill: default durations of the standard order types (spec §10.2) for existing tenants.
+UPDATE "order_types" SET "default_duration_minutes" = CASE "key"
+    WHEN 'montage' THEN 480
+    WHEN 'reparatur' THEN 180
+    WHEN 'wartung' THEN 120
+    WHEN 'stoerung' THEN 120
+    WHEN 'notdienst' THEN 120
+    WHEN 'besichtigung' THEN 60
+    WHEN 'abnahme' THEN 60
+    WHEN 'nacharbeit' THEN 120
+  END
+WHERE "default_duration_minutes" IS NULL
+  AND "key" IN ('montage', 'reparatur', 'wartung', 'stoerung', 'notdienst', 'besichtigung', 'abnahme', 'nacharbeit');