fix(images): fix mship image handling

[Sg312]

Summary

Brief description of what this PR does and why.

Companion: https://github.com/simstudioai/mothership/pull/412

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation
• Other: ___________

Testing

How has this been tested? What should reviewers focus on?

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

Screenshots/Videos

[vercel]

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview	Aug 7, 2026 12:34am

[greptile-apps]

Greptile Summary

The PR changes Copilot attachment preparation so one failed upload is represented by an omission marker while valid sibling attachments continue to be prepared.

• Replaces request-wide failure with per-attachment failure isolation.
• Updates payload tests to cover a failed attachment alongside a successful image.
• Removes the top-level configVersion field from bun.lock.

Confidence Score: 4/5

The PR appears safe to merge after considering the non-blocking need to normalize filenames in failed-attachment context markers.

Per-file failure isolation preserves valid sibling attachments as intended, but the new failure path exposes raw attachment metadata to model-visible context instead of following the successful path's normalization.

Files Needing Attention: apps/sim/lib/copilot/chat/payload.ts

Important Files Changed

Filename	Overview
apps/sim/lib/copilot/chat/payload.ts	Adds per-attachment failure isolation, but embeds an unnormalized client filename in the new model-visible failure marker.
apps/sim/lib/copilot/chat/payload.test.ts	Updates coverage to verify that failed attachments are omitted while valid siblings remain available.
bun.lock	Removes only the top-level configVersion metadata field, with no dependency resolution changes shown.

_{Reviews (1): Last reviewed commit: "fix(mship): fix image handling" | Re-trigger Greptile}

[github-actions]

⚠️ Cross-repo companion check

One or more companion PRs aren't merged into staging yet. Merging this without them will leave copilot and sim out of sync — merge them in lockstep.

• ❌ simstudioai/mothership#412 — OPEN, not merged (targets staging) — fix(mship): fix image handling