Merge remote-tracking branch 'origin/master' into worktree/web-multimodal-image-input

# Conflicts: # .gitignore # apps/cli/package.json # apps/cli/src/web.ts # docs/architecture.i18n.yaml # docs/config-catalog.md # docs/module-graph.md # packages/client/connection/README.md # packages/client/connection/src/client/api.ts # packages/client/connection/src/client/fixture.ts # packages/client/runtime/README.md # packages/client/runtime/src/client/sessions/service.ts # packages/client/runtime/src/client/sessions/session.ts # packages/client/runtime/src/client/workspaces/service.ts # packages/client/ui-conversation/src/client/apply.ts # packages/client/ui-conversation/src/client/chat/MessageItem.tsx # packages/client/ui-conversation/src/client/contract/slots.ts # packages/client/ui-conversation/src/client/index.ts # packages/client/ui-conversation/src/client/service.ts # packages/client/ui-conversation/src/client/skeleton/ConversationRoot.tsx # packages/client/ui-conversation/src/client/skeleton/EmptyHero.tsx # packages/client/ui-conversation/src/client/skeleton/EmptyState.tsx # packages/client/ui-conversation/src/client/skeleton/InputBar.module.css # packages/client/ui-conversation/src/client/skeleton/InputBar.tsx # packages/client/ui-conversation/tests/apply-inject.spec.tsx # packages/client/ui-conversation/tests/input-bar.spec.tsx # packages/client/ui-conversation/tests/skeleton.spec.tsx # packages/client/ui-trajectory/tests/views.spec.tsx # packages/host/apiproxy/src/api-proxy.ts # pnpm-lock.yaml
2026-07-27 12:27:30 +08:00
parent 1a27c0f779 79eb3a9035
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 # Durable Image Attachments

+English | [中文](attachment.zh.md)
+
 The attachment seam separates binary image ownership from the session log. A producer gives validated encoded bytes to [`ctx.attachments`](../cordis-catalog/services.md#ctxattachments); the service publishes an immutable content-addressed reference only after the object is durable. Session events and model-visible `ImageBlock`s contain that reference and metadata, never a browser object URL, host temporary path, provider URL, or base64 payload.

 Unsent browser drafts may stay in memory and native clients may stage them in operating-system temporary storage. Once the host accepts a user message, its images move below `<DSH_HOME>/attachments/v1` before the user event is appended. Structured model image output follows the same persist-before-event rule.