feat(mobile-expo): GraphQL client and codegen for Strapi Experience

[Ur-imazing]

Background

The Expo watch app must fetch content from Strapi via GraphQL (same Experience and section model as web). This issue adds the GraphQL client and codegen so the app can query Experience(s) by slug/locale and use typed section data.

Expected outcome

• Apollo Client (or chosen client) wired to the Strapi GraphQL endpoint (configurable per environment).
• Typed operations for Experience(s): watch home (homepage) and experience-by-slug with locale.
• Section fragments or types aligned with apps/cms/schema.graphql (MediaCollection, PromoBanner, InfoBlocks, CTA).
• Codegen from apps/cms/schema.graphql—either reuse @forge/graphql (if Metro-compatible) or Expo-specific codegen.

Acceptance criteria

• GraphQL client configured with endpoint from env (dev/stage/prod).
• Codegen produces types/operations from apps/cms/schema.graphql.
• At least one query for experiences (e.g. by slug and locale, or homepage).
• No hand-editing of generated output; regeneration documented.

Possible solution(s)

1. Add @apollo/client and optionally @forge/graphql as workspace dependency; ensure Metro resolves workspace packages.
2. Or: dedicated codegen script in mobile/expo that reads schema and outputs types/hooks (e.g. graphql-codegen or similar).

References

• Parent: epic(mobile-expo): cross-platform watch app with React Native and Expo #89
• Depends on: feat(mobile-expo): scaffold Expo app under mobile/expo #90
• apps/cms/schema.graphql
• apps/web/src/lib/content.ts
• packages/graphql

[Ur-imazing]

Execution plan (for #91)

1. Branch: feat/91-graphql-codegen from feat/90-scaffold-expo (done).
2. Deps: Add @forge/graphql (workspace), @apollo/client, graphql to mobile/expo; add Metro config if workspace resolution fails.
3. Env: src/lib/config.ts with EXPO_PUBLIC_GRAPHQL_URL; document in README.
4. Apollo: src/lib/apolloClient.ts with HttpLink + InMemoryCache from config.
5. Query: One Experience query (watch home / by slug+locale) with inline section selection; typed via @forge/graphql.
6. Codegen: No Expo codegen; document "run pnpm run codegen from repo root when schema changes."
7. Verify: Build + optional smoke; commits; PR targeting feat/90-scaffold-expo.