* feat: handle images sent to non-vision models in Slack, Linear, and web UI
Add vision capability checks across all image input paths. When a user
sends images to a text-only model (e.g. GLM 5.2, DeepSeek V4 Pro), the
images are now skipped and a warning is injected into the prompt instead
of sending unsupported content to the model.
- Slack: resolve model at webhook time, skip image fetch + add warning
- Linear: same pattern as Slack
- Queued message middleware: read resolved model from thread metadata,
strip images from queued payloads for text-only models
- Web UI: disable submit + show inline warning when images are attached
to a non-vision model selection
- Shared: resolve_agent_model_id helper + vision_not_supported_warning
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
* test: mock resolve_agent_model_id in Slack mention test
The test_process_slack_mention_queues_active_thread_message test was
missing a mock for the new resolve_agent_model_id call added to the
Slack webhook handler, causing a TypeError when image URLs triggered
the model resolution path.
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
* fix: include vision warning in queued payload for text-only models
Update the prompt variable (not just content_blocks) before clearing
image_urls so the queued payload also carries the warning text when a
Slack/Linear follow-up arrives while the thread is busy.
Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
