fix: add missing 'short'/'medium'/'silky' to coat_type enum (GRO-1971)

Migration 0031_buffer_rules.sql created coat_type enum with values
('smooth', 'double', 'wire', 'curly', 'long', 'hairless') but omitted
'short', 'medium', and 'silky' which are defined in schema.ts and
required by seed.ts.

Added 0035_add_missing_coat_type_values.sql to add the missing values
using ALTER TYPE ... ADD VALUE IF NOT EXISTS.

This resolves the UAT seed failure:
  PostgresError: invalid input value for enum coat_type: "short"
  code: '22P02' routine: 'enum_in' (packages/db/src/seed.ts)

Dev→UAT SDLC: QA (Lint Roller) review, then CTO review.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/db/migrations/0036_add_missing_coat_type_values.sql

@@ -1,9 +0,0 @@
--- Migration: 0036_add_missing_coat_type_values.sql
--- Adds missing values to coat_type enum that seed.ts requires but which were
--- omitted from the 0031_buffer_rules.sql CREATE TYPE statement (migration drift).
--- 0031 created: 'smooth', 'double', 'wire', 'curly', 'long', 'hairless'
--- Missing (from schema.ts coatTypeEnum): 'short', 'medium', 'silky'
-
-ALTER TYPE "coat_type" ADD VALUE IF NOT EXISTS 'short';
-ALTER TYPE "coat_type" ADD VALUE IF NOT EXISTS 'medium';
-ALTER TYPE "coat_type" ADD VALUE IF NOT EXISTS 'silky';

packages/db/migrations/meta/_journal.json

@@ -248,10 +248,10 @@
       "breakpoints": true
     },
     {
-      "idx": 36,
+      "idx": 35,
       "version": "7",
       "when": 1751480000000,
-      "tag": "0036_add_missing_coat_type_values",
+      "tag": "0035_add_missing_coat_type_values",
       "breakpoints": true
     }
   ]