## Thinking Path
> - Paperclip is the open source app people use to supervise AI agents
and their work.
> - The task page is the established place to read run progress and
answer agent questions.
> - Native runner events use PRP envelopes instead of the direct-adapter
transcript format.
> - The task page needs a narrow projection for those events without
changing legacy adapter behavior.
> - Unknown event versions and fields must stay hidden until the UI
supports them.
> - This pull request adds a runtime-gated native turn projection and
preserves the classic path.
> - The benefit is one task thread for native Codex runs while direct
adapters keep their current UI.
## Linked Issues or Issue Description
**Subsystem affected**
`ui/` task chat and transcript projection.
**Problem or motivation**
The server can record native runner events, replies, usage, and
structured interactions, but the existing task page cannot safely render
those records. Reusing the native path for direct adapters would also
risk the legacy question and finalization behavior.
**Proposed solution**
Project supported PRP v1 events into the existing transcript model only
when runtime facts identify a native `paperclip_runner` run. Use an
exact event and payload allowlist. Keep direct adapters on the existing
transcript, composer, interaction, and finalization path.
**Alternatives considered**
A separate runner page was rejected because it would split task history.
A universal transcript replacement was rejected because the experimental
runner must not alter legacy adapters.
**Roadmap alignment**
This change supports activity attribution and recoverable runs. It does
not replace the current task page.
## What Changed
- Project supported native PRP v1 assistant, reasoning, tool, activity,
usage, interaction, and result events.
- Render a native runner turn only when both runtime mode and adapter
type match.
- Recognize the canonical `assistant_message` item kind and preserve
final-reply precedence.
- Fail closed for unsupported PRP versions, event types, payload
schemas, and identity fields.
- Keep explicit running and pending provider activities open until a
real terminal state arrives.
- Include channel and lifecycle identity in memoization so
progress-to-final transitions rerender.
- Add focused native, empty-transcript, interaction, final, memoization,
and direct-adapter regressions.
## Verification
- GitHub Actions is the authoritative test environment for this stack.
- This top PR receives the full stack-aware CI suite.
- Greptile will review this exact nine-file delta after the branch is
pushed.
## Risks
- The main risk is changing direct-adapter task behavior. The render
gate requires both native runtime mode and the `paperclip_runner`
adapter.
- The next risk is exposing future provider payloads. Version, event,
schema, and field allowlists fail closed.
- There are no database, lockfile, workflow, build-system, or server
changes in this PR.
## Stack
1. [Runner package, SDK, and developer
tools](https://github.com/paperclipai/paperclip/pull/12608)
2. [Codex production server
integration](https://github.com/paperclipai/paperclip/pull/12616)
3. This PR: provider-neutral task-thread UI
## Model Used
OpenAI Codex with GPT-5, extended reasoning, repository tools, and
parallel review agents.
## 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 searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [ ] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [ ] All Paperclip CI gates are green
- [ ] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - The issue thread UI renders live agent output from adapter run logs
and transcript parsing.
> - Some adapter streams emit many small or repeated token chunks, and
live UI updates can expose partial words, duplicated slices, or
transient markdown placeholders.
> - That makes active run updates look like gibberish even when the
underlying agent output is valid.
> - The fix needs to preserve raw logs while making the live thread view
stable, readable, and ordered.
> - This pull request adds monotonic run-log sequencing, safer live
transcript dedupe/order handling, markdown placeholder hiding, and
readable live text stabilization.
> - The benefit is a live issue thread that updates smoothly without
showing confusing partial parser artifacts.
## Linked Issues or Issue Description
No public GitHub issue exists yet, so this PR includes the bug details
inline.
### What happened?
Live run updates in the issue thread can show confusing repeated or
partial text while an adapter is streaming. The visible text appears to
lose parsing boundaries during active updates, especially with ACP-style
token deltas, so the live output can briefly render duplicated chunks,
incomplete words, or HTML-comment placeholders.
### Expected behavior
Live text should remain readable while preserving the underlying run
output for raw inspection.
### Steps to reproduce
1. Start a live agent run whose adapter emits small stdout token deltas.
2. Watch the issue thread while the run is still active.
3. Observe transient duplicated chunks, incomplete words, or markdown
placeholder artifacts in the live rendered text.
### Paperclip version or commit
Reproduced against current `master` before this PR branch.
### Deployment mode
Local dev issue-thread UI with live local adapter runs.
### Additional context
GitHub PR search for `live run streaming text markdown transcript` found
one broad merged PR, `#252` (“Dotta updates - sorry it's so large”), but
no targeted duplicate for this live streaming readability bug.
## What Changed
- Added per-run monotonic sequence numbers to persisted and live run-log
chunks.
- Dedupe and order live transcript chunks by sequence before falling
back to timestamp ordering.
- Hide markdown HTML comment placeholder text from rendered markdown
output.
- Smooth live issue-thread text updates so partial additions reveal at
readable word boundaries and sliding-window removals do not produce
gibberish.
- Added coverage for run-log ordering/deduping, markdown comment hiding,
live issue-thread stabilization, and Greptile-reviewed edge cases where
overlap rewrites could synthesize text or no-boundary additions could
stay hidden.
## Verification
- `pnpm --filter @paperclipai/ui exec vitest run
src/lib/issue-chat-messages.test.ts src/components/MarkdownBody.test.tsx
src/components/transcript/useLiveRunTranscripts.test.tsx` passed before
the review fix: 3 files, 86 tests.
- `pnpm --filter @paperclipai/ui exec vitest run
src/lib/issue-chat-messages.test.ts` passed after the review fix: 1
file, 30 tests.
- `pnpm --filter @paperclipai/ui exec vitest run
src/lib/issue-chat-messages.test.ts
src/components/transcript/useLiveRunTranscripts.test.tsx` passed after
the final Greptile overlap fix: 2 files, 40 tests.
- `pnpm check:token-gates` passed.
- Local PII/secret scan of touched files found only expected code/test
words such as `secret`, `token`, and redaction-related strings; no
literal credentials found.
- `pnpm -r typecheck` passed after restoring declared dependencies with
`CI=1 pnpm install --frozen-lockfile` and running with a short `TMPDIR`
because `tsx` IPC sockets fail under the long sandbox temp path.
- `pnpm build` passed with existing Vite CSS/font/chunk warnings.
- GitHub PR checks passed on head
`4c052dfe86aecb5feb73504e6b48843f68fce813`: build, typecheck/release
registry, server and workspace test shards, serialized server suites,
e2e, canary dry run, policy, review, Socket, Superagent, Snyk, and
verify.
- Greptile review passed on head
`4c052dfe86aecb5feb73504e6b48843f68fce813` with confidence score 5/5 and
no blocking issues found.
- `pnpm test:run` failed in unrelated server workspace tests on this
macOS local environment:
- `server/src/__tests__/heartbeat-workspace-branch-containment.test.ts`:
two assertions compare `/tmp/...` with `/private/tmp/...`.
- `server/src/__tests__/heartbeat-worktree-suppression.test.ts`:
expected one heartbeat run but observed two, followed by cleanup fallout
in the full run.
- Isolated rerun of those two server suites reproduced the same three
failures.
## Risks
- Low product risk for the UI changes: the readable smoothing only
affects active live-run display stabilization, not stored comments or
raw run logs.
- Moderate verification risk: local full Vitest did not pass because of
unrelated server workspace tests. Targeted tests for this change,
typecheck, token gates, and build passed.
- Run-log sequence fields are optional for compatibility with older log
rows that do not include `seq`.
> 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-based coding agent, tool-using local workspace
execution.
## 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 searched the GitHub PR list for similar PRs and confirmed this
is not a duplicate
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge
Refactor monolithic heartbeat service, AgentConfigForm, and CLI
heartbeat-run into a proper adapter registry pattern. Each adapter
type (process, claude-local, codex-local, http) gets its own module
with server-side execution logic, CLI invocation, and UI config form.
Significantly reduces file sizes and enables adding new adapters
without touching core code.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Dotta