Add country mapping support for imports and geographic map

- Add normalizeCountryToCode utility to convert country names to ISO-2 codes
- Support English, French and common alternate spellings
- Update Typeform import to support country field mapping
- Update Notion import to support country field mapping
- Allow project.update to set/update country with automatic normalization
- Fix geographic distribution map showing empty when country data exists

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/server/routers/project.ts

@@ -7,6 +7,7 @@ import {
   notifyProjectTeam,
   NotificationTypes,
 } from '../services/in-app-notification'
+import { normalizeCountryToCode } from '@/lib/countries'
 
 export const projectRouter = router({
   /**
@@ -324,6 +325,7 @@ export const projectRouter = router({
         title: z.string().min(1).max(500).optional(),
         teamName: z.string().optional().nullable(),
         description: z.string().optional().nullable(),
+        country: z.string().optional().nullable(), // ISO-2 code or country name (will be normalized)
         // Status update requires roundId
         roundId: z.string().optional(),
         status: z
@@ -341,13 +343,19 @@ export const projectRouter = router({
       })
     )
     .mutation(async ({ ctx, input }) => {
-      const { id, metadataJson, status, roundId, ...data } = input
+      const { id, metadataJson, status, roundId, country, ...data } = input
+
+      // Normalize country to ISO-2 code if provided
+      const normalizedCountry = country !== undefined
+        ? (country === null ? null : normalizeCountryToCode(country))
+        : undefined
 
       const project = await ctx.prisma.project.update({
         where: { id },
         data: {
           ...data,
           ...(status && { status }),
+          ...(normalizedCountry !== undefined && { country: normalizedCountry }),
           metadataJson: metadataJson as Prisma.InputJsonValue ?? undefined,
         },
       })