#11480 pinned `TZ: "UTC"` in the vitest config because several suites asserted
local-time renders from UTC instants. That made the suite green everywhere, but
by suppressing the variable rather than fixing what depended on it: afterwards
no test could observe non-UTC behaviour, and a fixture quietly regaining a
local-time dependency would not be caught.
#11478 anchored those fixtures to the clock under test, which is the real fix,
so the pin now carries only its cost. Removed.
The order was load-bearing and is now satisfied. Measured on master before
#11478 landed, removing the pin failed four date-dependent tests at UTC+9 and
ten at UTC+12 - IssueProperties, IssueThreadInteractionCard, SummarySlotCard
and attention, all of which that PR anchors. Re-measured on master at
40e7add71 with the pin removed: 4117 pass at UTC+14, UTC+9 and UTC-11, against
a control of 4117 with the pin. The prerequisite is demonstrated rather than
assumed.
No test accompanies this, and the prefix says so. The change deletes
configuration, and what verifies it is the existing suite run at several
offsets - not expressible as a test case without a harness that re-runs vitest
under a different TZ.
A caution for anyone reading a failure here later: an earlier pass at this
misread the parallel-worker flakes from #11499 as timezone failures, because a
single run per zone showed a clean east-of-UTC pattern that was really noise.
Date-dependent failures are consistent across runs and name date-handling
tests; the flakes vary between runs and name unrelated pages.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The ui suite was green in CI and red on a clean checkout in any other
timezone. GitHub's runners default to UTC, so nothing ever reported it. A
contributor elsewhere sees two failures on their first run, which reads as
"this project is broken" rather than "your clock differs from the runner's".
Two independent causes.
`IssueProperties` supplies a UTC instant and asserts on the local-time string
the UI renders from it - "2026-07-17T16:08:00.000Z" is expected to read
"Today, 4:08 PM". That holds only where local time is UTC. Pinned with
`env: { TZ: "UTC" }` rather than rewritten: those assertions are about what a
person sees, and "4:08 PM" is worth more to a reader than an expectation
computed from the same formatter the component uses, which would pass whatever
that formatter did.
`StatusCards/format` was wrong in two ways at once, and the pin hides only one,
so it is fixed directly. `rollupUpdatesToday` filters on the *UTC* day
boundary, while the test built fixtures from local noon on the real clock.
East of UTC+12, "today at local noon" is already yesterday in UTC and the rows
the test means to count are filtered out; and any run crossing midnight UTC
lands `iso(0)` and the function's default `now` on different days. The
fixtures now come from a fixed instant, passed as `now` - the parameter exists
for this, and the sibling test already used it.
Each fix was confirmed load-bearing by removing it under TZ=Pacific/Auckland.
Without the pin, IssueProperties fails; without the fixed instant, StatusCards
fails even with the pin removed, so neither rides on the other.
Full ui suite 4017 pass, 0 fail, in UTC, Pacific/Auckland and Asia/Kolkata.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
## Thinking Path
> - Paperclip orchestrates AI agents for zero-human companies.
> - The environment/runtime layer decides where agent work executes and
how the control plane reaches those runtimes.
> - Today Paperclip can run locally and over SSH, but sandboxed
execution needs a first-class environment model instead of one-off
adapter behavior.
> - We also want sandbox providers to be pluggable so the core does not
hardcode every provider implementation.
> - This branch adds the Sandbox environment path, the provider
contract, and a deterministic fake provider plugin.
> - That required synchronized changes across shared contracts, plugin
SDK surfaces, server runtime orchestration, and the UI
environment/workspace flows.
> - The result is that sandbox execution becomes a core control-plane
capability while keeping provider implementations extensible and
testable.
## What Changed
- Added sandbox runtime support to the environment execution path,
including runtime URL discovery, sandbox execution targeting,
orchestration, and heartbeat integration.
- Added plugin-provider support for sandbox environments so providers
can be supplied via plugins instead of hardcoded server logic.
- Added the fake sandbox provider plugin with deterministic behavior
suitable for local and automated testing.
- Updated shared types, validators, plugin protocol definitions, and SDK
helpers to carry sandbox provider and workspace-runtime contracts across
package boundaries.
- Updated server routes and services so companies can create sandbox
environments, select them for work, and execute work through the sandbox
runtime path.
- Updated the UI environment and workspace surfaces to expose sandbox
environment configuration and selection.
- Added test coverage for sandbox runtime behavior, provider seams,
environment route guards, orchestration, and the fake provider plugin.
## Verification
- Ran locally before the final fixture-only scrub:
- `pnpm -r typecheck`
- `pnpm test:run`
- `pnpm build`
- Ran locally after the final scrub amend:
- `pnpm vitest run server/src/__tests__/runtime-api.test.ts`
- Reviewer spot checks:
- create a sandbox environment backed by the fake provider plugin
- run work through that environment
- confirm sandbox provider execution does not inherit host secrets
implicitly
## Risks
- This touches shared contracts, plugin SDK plumbing, server runtime
orchestration, and UI environment/workspace flows, so regressions would
likely show up as cross-layer mismatches rather than isolated type
errors.
- Runtime URL discovery and sandbox callback selection are sensitive to
host/bind configuration; if that logic is wrong, sandbox-backed
callbacks may fail even when execution succeeds.
- The fake provider plugin is intentionally deterministic and
test-oriented; future providers may expose capability gaps that this
branch does not yet cover.
## Model Used
- OpenAI Codex coding agent on a GPT-5-class backend in the
Paperclip/Codex harness. Exact backend model ID is not exposed
in-session. Tool-assisted workflow with shell execution, file editing,
git history inspection, and local test 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 have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [ ] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge
Dashboard, agents, goals, issues, and projects pages with sidebar
navigation. API client layer, custom hooks, and shared layout
components. Built with Vite and TypeScript.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Tonio
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