* feat: add load_image tool for local file vision
* fix: address load_image PR review feedback
- Exclude load_image from sub-agent tools via Unregister after Clone,
since RunToolLoop does not call resolveMediaRefs
- Add ToolRegistry.Unregister() method
- Fix scope collision: use channel:chatID instead of filename
- Add channel/chatID context resolution matching send_file pattern
- Add comment explaining iteration > 1 guard on resolveMediaRefs
- Remove emoji from ForUser for consistency with send_file
- Add load_image_test.go
* feat: enable load_image for subagents via MediaResolver in RunToolLoop
Instead of removing load_image from sub-agent tools (28f69e71), inject a
MediaResolver into the legacy RunToolLoop fallback path so media:// refs
are resolved to base64 before each LLM call — matching the main agent
loop behavior.
- Add MediaResolver field to ToolLoopConfig and call it on iteration > 1
- Add SubagentManager.SetMediaResolver() and wire it through runTask
- Remove ToolRegistry.Unregister() (no longer needed)
- Restore load_image in sub-agent tool set (revert Clone+Unregister)
- Add TestSubagentManager_SetMediaResolver_StoresResolver
* refactor(load_image): remove prompt parameter from tool schema
* test(tools): add success-path test for LoadImageTool
Add TestLoadImage_SuccessPath that creates a real PNG file with valid
magic bytes, calls Execute with WithToolContext, and verifies:
- result.IsError == false
- ToolResult.Media contains a media:// ref
- ToolResult.ForLLM contains the [image: marker
- media ref is resolvable in the store
Add explanatory comment in loop.go for why Media and ArtifactTags
coexist on non-ResponseHandled tool results (e.g. load_image).
* fix: preallocate slice in tests and add ResponseHandled guard in toolloop
Fix prealloc linter failure in load_image_test.go.
Prevent double-resolving media by checking ResponseHandled in toolloop.go.
* Register TTS tool if provider is available
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Co-authored-by: Reusu <admin@yumao.name>
Co-authored-by: 美電球 <hoshina@evaz.org>
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