Fix Activity Log timezone formatting

[neubig]

Summary

• Format Activity Log run timestamps using the automation trigger timezone instead of the viewer's browser timezone.
• Show the timezone abbreviation in Activity Log timestamps when a timezone is configured.
• Read timezone from trigger.timezone while preserving the existing top-level fallback used by mocks/legacy data.

Tests

• cd frontend && npm run make-i18n && npm test -- src/__tests__/components/automations/detail/activity-log-item.test.tsx src/__tests__/components/automations/detail/activity-log-section.test.tsx src/__tests__/routes/automation-detail.test.tsx
• cd frontend && npm run typecheck
• cd frontend && npx eslint src/components/automations/detail/activity-log-item.tsx src/components/automations/detail/activity-log-section.tsx src/components/automations/detail/configuration-section.tsx src/routes/automation-detail.tsx src/__tests__/components/automations/detail/activity-log-item.test.tsx src/types/automation.ts && npx prettier --check src/components/automations/detail/activity-log-item.tsx src/components/automations/detail/activity-log-section.tsx src/components/automations/detail/configuration-section.tsx src/routes/automation-detail.tsx src/__tests__/components/automations/detail/activity-log-item.test.tsx src/types/automation.ts

This PR was created by an AI agent (OpenHands) on behalf of the user.

@neubig can click here to continue refining the PR

Related issue: #130

[ghost]

Coverage Report

File	Stmts	Miss	Cover	Missing
__init__.py	1	0	100%
app.py	151	83	45%	41, 44, 47, 53, 55, 58, 61–64, 67, 72–74, 76, 81–82, 84, 86–88, 90, 94, 96–97, 99–100, 103–109, 112–113, 116, 123–124, 127–128, 132, 140–141, 144, 151–152, 154, 157–158, 161, 166–174, 176–178, 284–286, 291–292, 294–295, 297, 300–302, 304–305, 307–308, 313–314, 318, 321, 323
auth.py	160	7	95%	88, 116, 125, 162, 335, 343–344
config.py	158	0	100%
constants.py	17	0	100%
db.py	67	29	56%	60, 74–75, 78–80, 82, 89, 92–93, 96, 104, 111, 144, 147–148, 152–153, 161, 169, 174, 201, 204–210
dispatcher.py	186	45	75%	70, 82, 84–85, 137, 199–202, 237, 240, 255–256, 262–264, 281–282, 288–292, 295–297, 307, 373–374, 399–406, 426, 441–442, 456–457, 466–467, 469
event_router.py	59	19	67%	83, 88, 119–121, 137–138, 156, 158, 160–161, 163, 173, 179–181, 184, 186, 188
exceptions.py	4	0	100%
execution.py	220	133	39%	39–41, 76–79, 87–91, 93, 101–103, 108–112, 114, 128–131, 133, 135, 137–140, 142–147, 149, 151–158, 160–161, 163, 199–201, 207–209, 220–223, 229–231, 271–275, 284, 292, 296, 298–299, 304–305, 310, 388–389, 473–475, 477–483, 486–487, 489, 491–493, 496, 499, 502–505, 507, 510–511, 514–516, 520–521, 525–528, 530, 538–539, 543–545, 547–553, 557, 559, 568–570, 572–574
filter_eval.py	50	2	96%	161–162
logger.py	55	17	69%	37, 50–51, 53–59, 74, 77, 101, 103–106
models.py	81	0	100%
preset_router.py	190	56	70%	143–145, 255–256, 261–268, 273, 276, 278–279, 291–294, 296–300, 305, 314, 386–388, 501–502, 507–514, 519, 522, 524–525, 537–540, 542–546, 551, 561
router.py	142	77	45%	92–93, 113, 115, 118, 120, 134, 147, 149–150, 152–153, 155–156, 159–161, 172–174, 194–196, 202–204, 208–209, 228–229, 231, 234, 259–262, 281, 284, 287, 294, 296, 330–332, 335–337, 341–342, 347, 351–354, 356, 364, 366–367, 372–373, 376, 378, 380–382, 385–388, 393, 395–396, 405, 426–428, 432
scheduler.py	60	9	85%	134–135, 172–173, 188–189, 199–200, 202
schemas.py	270	17	93%	32, 166, 172–174, 233–235, 237, 342–343, 346, 351, 356, 500, 508, 515
trigger_matcher.py	28	3	89%	72–74
uploads.py	107	59	44%	142–145, 153–155, 161–162, 165, 174–175, 178–179, 187–188, 190–193, 196–199, 201, 203–205, 207–210, 212–213, 215, 230, 236–237, 240, 243, 246, 249, 251, 264–265, 279, 282–284, 286–287, 289, 295–296, 309, 317–319, 323
watchdog.py	98	45	54%	55–57, 69–70, 162–163, 204–205, 207, 209, 218, 220–222, 224, 231–233, 235–237, 239–240, 242, 257, 259, 264–267, 269–274, 276–282, 284
webhook_router.py	80	48	40%	57, 82–83, 107–108, 110, 113–114, 116, 126, 128–132, 137, 139, 151, 154, 157, 164–165, 167, 180, 182–183, 188, 204, 206–207, 213–215, 217–218, 220, 235, 237–238, 243–244, 261, 263–264, 270–271, 273, 275
backends
__init__.py	13	0	100%
base.py	29	0	100%
cloud.py	130	62	52%	43–45, 50–52, 103, 116–118, 131–135, 142–143, 145, 147, 159–160, 229–230, 232–233, 235–238, 240–245, 247–255, 257–258, 260, 267–269, 272–273, 275, 282–284, 289–293, 295
local.py	43	0	100%
event_schemas
__init__.py	33	1	96%	53
bitbucket_data_center.py	16	0	100%
custom.py	33	5	84%	52–53, 64–66
detection.py	32	0	100%
github.py	125	4	96%	306, 311, 456, 483
jira_dc.py	16	0	100%
presets
__init__.py	0	0	100%
storage
__init__.py	6	0	100%
factory.py	15	1	93%	36
file_store.py	22	5	77%	21, 30, 35, 40, 64
google_cloud.py	72	11	84%	49, 97–102, 136–137, 190, 192
local.py	68	0	100%
s3.py	112	15	86%	56, 100, 102–103, 107, 109, 190, 213–215, 269–270, 275, 337–338
utils
__init__.py	5	0	100%
agent_server.py	53	0	100%
api_key.py	32	24	25%	40–41, 46–48, 50, 55, 60, 62–65, 67–68, 70–71, 73, 79, 81–82, 89, 91–92, 98
cron.py	45	6	86%	39, 45, 74, 80, 123, 140
log_context.py	10	0	100%
model_profiles.py	11	0	100%
run.py	84	14	83%	74–76, 183–184, 200–202, 207–209, 256, 262–263
sandbox.py	71	61	14%	49–50, 55–58, 60–62, 64–70, 80–81, 86–92, 115–116, 118–122, 124–128, 159–160, 162, 164–167, 172–173, 176, 180–181, 187–189, 194–196, 201–202, 210–212, 214
tarball_validation.py	48	0	100%
time.py	3	0	100%
webhook.py	57	9	84%	49, 54, 122, 132–134, 140, 203–204
TOTAL	3368	867	74%

[ghost]

🚀 Deploy Preview PR Created/Updated

A deploy preview has been created/updated for this PR.

Deploy PR: https://github.com/OpenHands/deploy/pull/4289
Automation SHA: f24fb26a67d3863f8ed40ebae0370a5f3d9ad5f7
Last updated: May 25, 2026, 11:56:35 AM ET

Once the deploy PR's CI passes, the automation service will be deployed to the feature environment.

[all-hands-bot]

🟢 Good taste - Clean, focused fix that solves a real UX problem.

Changes Reviewed:

• Timezone handling: Activity log timestamps now use the automation's trigger timezone instead of browser timezone
• Backward compatibility: Falls back to legacy automation.timezone for existing data
• Error handling: Try-catch in formatting function gracefully handles invalid timezones
• Type safety: TypeScript types properly updated
• Test coverage: New test verifies timezone formatting with abbreviation display

[RISK ASSESSMENT]

• [Overall PR] ⚠️ Risk Assessment: 🟢 LOW

This is a frontend-only display formatting change with no API or backend modifications. The implementation includes proper fallbacks (missing timezone, formatting errors, legacy data), maintains backward compatibility through optional props, and has test coverage. The change is minimal, focused, and well-structured.

VERDICT:
✅ Worth merging: Clean implementation with proper error handling and backward compatibility.

KEY INSIGHT:
Elegant solution that threads timezone through components without over-engineering - uses simple prop passing rather than context, appropriate for this focused use case.

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Workflow run: https://github.com/OpenHands/automation/actions/runs/26409964274