feat(site/src): surface pinned chat workspace context in the UI - #26573
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Add the workspace-context indicator for agent chats. The popover lists
the chat's pinned context resources (instruction files, skills, and MCP
servers with their tools) and surfaces unusable resources with their
errors instead of dropping them silently. When the pinned context drifts
from the agent's latest snapshot, the ring shows a marker and a "Refresh
context" action re-pins the chat via
PUT /api/experimental/chats/{id}/context.
context_dirty watch events apply the lightweight dirty flags to the
cached chats and refetch the open chat so the full pinned detail loads.
Split from #26466; the context changes/diff view is deferred to a later
split.
sreya
approved these changes
Jun 22, 2026
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Adds the workspace-context indicator UI for agent chats, part of breaking the "Workspace Context Sources for Coder Agents" RFC (#26466) into small, reviewable PRs.
What this adds
PUT /api/experimental/chats/{id}/context.context_dirtywatch events apply the lightweight dirty flags across the cached chat lists and refetch the open chat so the full pinned detail loads.Not included
The context changes/diff view (the "View changes" affordance and its dialog) is intentionally deferred to a later split, so this PR contains no diff rendering.
Testing
pnpm lint(types, biome, circular deps, React Compiler, knip)pnpm test src/api/queries/chats.test.ts(cache-merge unit tests, including the newcontext_dirtycases)pnpm test:storybook src/pages/AgentsPage/components/ContextUsageIndicator.stories.tsx(4 stories)pnpm formatDesign notes
This is Split 3 of #26466. Split sequence:
codersdkcontext resource types (merged). During review the type was renamedChatContextMCPTool->ChatContextTooland the fieldmcp_tools->tools; this PR consumes those merged names.coder exp chat contextsource CRUD +refresh(next).changes,ChatContextResourceChange, the changes dialog, andbuildContentPatch) - last.Key decisions:
ChatWatchEventKindContextDirtyand exposes the refresh endpoint (feat: integrate agent context snapshots into chats #26389). Watch/pubsub payloads stay lightweight: they carry only thedirty/dirty_since/errorflags and omitresources. SomergeWatchedChatSummarymerges (not replaces) the cached context to preserve the pinnedresourcesa single-chat GET populated, and theAgentsPagewatch handler refetches only the open chat to pull the full pinned detail.resources; while they have not loaded it falls back to the agent'slast_injected_context, skipping the empty context-file placeholder so it never renders a nameless row.This PR was created by Coder Agents on behalf of @kylecarbs.