Claudio/squash migrations

.cursor/rules/prisma.mdc

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+---
+description: 
+globs: *.prisma
+alwaysApply: false
+---
+In the database schemas (prisma .schema files) we always want to use custom ID's using `generate_prefixed_cuid` such as
+
+model User {
+ id          String @id @default(dbgenerated("generate_prefixed_cuid('ctl'::text)"))
+}
+
+Rules
+- Params must include ::text
+- Function calls must be within dbgenerated()
+
+This will generate a user readable ID such as `usr_BJRIZLgRPuWt8MvMjkSY82f1u3580YSW` 
+
+We should aim for short but unique prefixes, usually 2-3 characters.
+

packages/db/prisma/functionDefinition.sql

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+-- Create function to generate prefixed CUID with sortable timestamp (compact)
+CREATE OR REPLACE FUNCTION generate_prefixed_cuid(prefix text)
+RETURNS text AS $$
+DECLARE
+    timestamp_hex text;
+    random_hex text;
+BEGIN
+    -- Generate timestamp component (seconds since epoch) as hex
+    timestamp_hex = LOWER(TO_HEX(EXTRACT(EPOCH FROM NOW())::BIGINT));
+
+    -- Generate 8 random bytes and encode as hex (16 characters)
+    -- Ensure we call the function from the correct schema if pgcrypto is installed elsewhere
+    random_hex = encode(gen_random_bytes(8), 'hex');
+
+    -- Combine prefix, timestamp, and random hex string
+    RETURN prefix || '_' || timestamp_hex || random_hex;
+END;
+$$ LANGUAGE plpgsql;