feat(middleware): communicate multimodal limitations to users when runtime can't handle media#466
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alexey-pelykh merged 1 commit intomainfrom Mar 8, 2026
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…ntime can't handle media (#400) Add media capability declarations to all four CLI runtimes and wire capability checking into ChannelBridge so users receive a clear warning when they send media the runtime cannot process natively. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
mediaCapabilitieson all four CLI runtimes — Claude (image/), Gemini (image/, audio/, video/), Codex (none), OpenCode (none)partitionMedia()utility that splits resolved media into supported vs unsupported based on runtime capabilitiesChannelBridge.handle()so only supported media reaches the runtime; unsupported media generates a user-facing warning prepended to the reply payloadsmediaCapabilitiespass all media through unchangedCloses #400
Test plan
partitionMediaandformatUnsupportedMediaWarning(media-capability.test.ts)pnpm tsgo) cleanpnpm check) clean🤖 Generated with Claude Code