## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies.
> - The board UI keeps issue pages responsive by subscribing to live
activity events and invalidating TanStack Query caches.
> - Issue documents are first-class issue artifacts, but document
activity events were not refreshing the document list, active document,
or revision caches.
> - That meant a user could update a document on an issue and another
open board would keep showing stale document content until a page
reload.
> - This pull request routes issue document activity events through the
same live invalidation path used for issue and comment updates.
> - The benefit is that issue document changes become visible
automatically on active issue pages without forcing operators to reload
the board.
## What Changed
- Added live-update cache invalidation for `issue.document_created`,
`issue.document_updated`, `issue.document_restored`, and
`issue.document_deleted` activity events.
- Invalidated the issue document list, the active document cache, and
document revisions for both issue id and identifier references when the
activity payload includes a document key.
- Added regression coverage for document activity events so active issue
pages refetch document caches without inactive-only behavior.
- Simplified the document invalidation test mock after Greptile feedback
so the test only models the cache reads it actually uses.
## Verification
- `git rebase public-gh/master` reported the branch was up to date after
fetching `public-gh/master`.
- `pnpm run preflight:workspace-links` passed.
- `pnpm exec vitest run --project @paperclipai/ui
ui/src/context/LiveUpdatesProvider.test.ts` passed: 1 file, 16 tests.
- `pnpm --filter @paperclipai/ui typecheck` passed.
- PR checks passed on `eecd19f7b0355490f17314c94bffa06aada8f9e3`:
`policy`, `verify`, `e2e`, all 4 serialized server shards, `Canary Dry
Run`, `security/snyk`, and `Greptile Review`.
- Greptile completed with `5/5` confidence and no unresolved review
threads.
## Risks
- Low risk. This expands cache invalidation for existing live activity
events and does not change API contracts, database schema, migrations,
or document persistence behavior.
- No migrations or `pnpm-lock.yaml` changes are included.
> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.
## Model Used
- OpenAI Codex, GPT-5 coding agent, tool-enabled local repository
workflow.
## Checklist
- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] No visible UI layout changed; screenshots are not applicable for
live cache invalidation behavior
- [x] No documentation changes were needed for this internal UI cache
refresh fix
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
Dotta
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