Refactor moderation actions to include channel and source metadata

- Updated moderation action functions to include `channelId` and `source` in the metadata for better tracking of actions.
- Introduced an `auditFrom` function to streamline the addition of audit information across various commands.
- Removed `prisma/migrations` from .gitignore to ensure migration files are tracked.
- Enhanced the `CreateCaseInput` type to accommodate new metadata structure.

packages/shared/src/audit.ts

@@ -0,0 +1,56 @@
+import { z } from 'zod';
+
+export const CaseAuditSourceSchema = z.enum([
+  'slash_command',
+  'button_confirmation',
+  'escalation',
+  'job'
+]);
+
+export type CaseAuditSource = z.infer<typeof CaseAuditSourceSchema>;
+
+export const PurgeAuditFiltersSchema = z.object({
+  targetUserId: z.string().nullable().optional(),
+  botsOnly: z.boolean().optional(),
+  linksOnly: z.boolean().optional(),
+  attachmentsOnly: z.boolean().optional(),
+  regex: z.string().nullable().optional()
+});
+
+export const CaseAuditMetadataSchema = z
+  .object({
+    source: CaseAuditSourceSchema,
+    recordedAt: z.string().datetime(),
+    channelId: z.string().optional(),
+    confirmed: z.boolean().optional(),
+    escalation: z.boolean().optional(),
+    warningCount: z.number().int().positive().optional(),
+    durationMs: z.number().int().positive().optional(),
+    deletedCaseId: z.string().optional(),
+    deletedCaseNumber: z.number().int().positive().optional(),
+    purge: z
+      .object({
+        requestedAmount: z.number().int().positive(),
+        deletedCount: z.number().int().nonnegative(),
+        filters: PurgeAuditFiltersSchema.optional()
+      })
+      .optional()
+  })
+  .passthrough();
+
+export type CaseAuditMetadata = z.infer<typeof CaseAuditMetadataSchema>;
+
+type BuildCaseMetadataInput = {
+  source: CaseAuditSource;
+  channelId?: string;
+  extras?: Record<string, unknown>;
+};
+
+export function buildCaseMetadata(input: BuildCaseMetadataInput): CaseAuditMetadata {
+  return CaseAuditMetadataSchema.parse({
+    source: input.source,
+    recordedAt: new Date().toISOString(),
+    channelId: input.channelId,
+    ...input.extras
+  });
+}