Add 'Secondary glazing' to the glazing pgEnum

Hyde 796 landlord descriptions include '100% secondary glazing (sap 9.94)'
(39 properties), currently flattened to 'Single glazing' (U = 4.8 instead of
secondary's 2.9). The calculator already supports secondary glazing (SAP10
code 5) — only this FE-owned enum and the model repo's GlazingType lacked a
member. Additive ALTER TYPE ... ADD VALUE only, generated via drizzle-kit.

Pairs with the model-repo GlazingType.SECONDARY change (Model#1416).

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

src/app/db/migrations/0256_glazing_secondary.sql

@@ -0,0 +1 @@
+ALTER TYPE "public"."glazing" ADD VALUE 'Secondary glazing' BEFORE 'Unknown';

src/app/db/migrations/meta/_journal.json

@@ -1786,6 +1786,13 @@
       "when": 1782981990785,
       "tag": "0255_futuristic_mattie_franklin",
       "breakpoints": true
+    },
+    {
+      "idx": 256,
+      "version": "7",
+      "when": 1782989713551,
+      "tag": "0256_glazing_secondary",
+      "breakpoints": true
     }
   ]
 }

src/app/db/schema/landlord_overrides.ts

@@ -180,6 +180,7 @@ export const GlazingValues: [string, ...string[]] = [
   "Triple glazing, pre-2002",
   "Triple glazing, 2002 or later",
   "Mixed glazing",
+  "Secondary glazing",
   "Unknown",
 ];