fix(mobile): isolate markdown image requests - #7942

💭 This diff only touches React Native component code with nothing Effect-related, so this should be "All clear." But I'm noticing a conflict between the instruction to respond with exactly that phrase versus the requirement to output valid JSON matching the schema—I need to reconcile these by following the schema while still conveying no findings.

1. git_tools — effect|Effect|ManagedRuntime|runPromise — rejected: repo.url: required parameter is missing or empty;repo: required parameter is missing or empty

2. browse_code — apps/mobile/src/features/threads/ThreadFeed.tsx

💭 This is pure React component code with no Effect service involvement, so nothing to flag there. There's a minor question about whether Text is properly imported, but that's outside the scope of this particular check, so I'll respond that everything looks clear.