Summary

• Adds console.warn logging to 8 silent catch blocks across 4 handler files in the research and maritime modules
• Follows the same pattern established in PR fix(intel): add console.warn to silent catch blocks for observability #807 (which covered intelligence handlers)
• Each warning includes the handler name in brackets for grep-ability, a brief description of what failed, and the caught error object

Files modified:

• server/worldmonitor/research/v1/list-arxiv-papers.ts — 1 catch block
• server/worldmonitor/research/v1/list-trending-repos.ts — 3 catch blocks (primary API, fallback API, handler)
• server/worldmonitor/research/v1/list-hackernews-items.ts — 2 catch blocks (per-item fetch, handler)
• server/worldmonitor/maritime/v1/get-vessel-snapshot.ts — 2 catch blocks (relay fetch, handler)

No logic changes — only added logging to previously silent catch blocks.

Test plan

• Verify TypeScript compilation passes (npm run typecheck)
• Confirm no runtime behavior changes — all catch blocks still return the same fallback values
• Optionally trigger a failure scenario (e.g., network timeout) and verify the warning appears in server logs

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