fix(tasks): label snapshot restores correctly

[tatoalo]

Problem

A cloud task resumed from a persisted sandbox snapshot initially reports "Setting up sandbox." The workflow is restoring an existing sandbox, so the progress label is misleading.

Changes

Classify a run as a snapshot resume only when it has both a source run and a snapshot ID. Both task workflows now emit "Restoring sandbox" for that path and keep "Setting up sandbox" for fresh setup.

[trunk-io]

😎 Merged successfully - details.

[greptile-apps]

Prompt To Fix All With AI

### Issue 1
products/tasks/backend/temporal/process_task/activities/get_task_processing_context.py:137
**Snapshot handoffs remain misclassified**

When a snapshot-backed cloud handoff has `handoff_resumed` and `snapshot_external_id` but no `resume_from_run_id`, this predicate returns false even though provisioning restores the snapshot, causing both workflows to continue displaying "Setting up sandbox" instead of "Restoring sandbox."

---

For each issue above, determine whether it is valid and should be fixed. If so, fix it directly.

_{Reviews (1): Last reviewed commit: "fix(tasks): label snapshot restores corr..." | Re-trigger Greptile}

[stamphog]

Small, contained progress-label fix in the tasks workflow; the one substantive Greptile finding was fixed and confirmed by Greptile's own 👍, with a parameterized test covering the fix.

• Author wrote 50% of the modified lines and has 103 merged PRs in these paths (familiarity MODERATE).
• 👍 on the PR from greptile-apps[bot], hex-security-app[bot].

Gate mechanics and policy version

Gate		Result
prerequisites	✓	all clear
deny-list	✓	no deny categories matched
size	✓	12L, 3F substantive, 51L/4F incl. docs/generated/snapshots — within ceiling
tier	✓	T1-agent / T1b-small (51L, 4F, single-area, fix)
stamphog 2.0.0b3		.stamphog/policy.yml @ a7705a2 · reviewed head ed711ea

[github-actions]

🤖 CI report

⚠️ Backend coverage — 15.0% of changed backend lines covered — 11 uncovered

🧪 Backend test coverage

Patch coverage — changed backend lines (products + core): ███░░░░░░░░░░░░░░░░░ 15.0% (2 / 13)

File	Patch	Uncovered changed lines
products/tasks/backend/temporal/execute_sandbox/workflow.py	0.0%	465–466
products/tasks/backend/temporal/process_task/activities/tests/test_get_task_processing_context.py	0.0%	41, 64–65, 77
products/tasks/backend/temporal/process_task/workflow.py	0.0%	1027–1028
products/tasks/backend/temporal/process_task/activities/get_task_processing_context.py	40.0%	138–140

🤖 Agents: add a test covering the lines above, or note why under "How did you test this code?". Machine-readable gap list: the patch-coverage artifact on this run (gh run download 30456266307 -n patch-coverage), or the coverage-data block at the end of this comment.

Per-product line coverage (touched products)

Product	Coverage	Lines
demo	███████████░░░░░░░░░ 56.2%	1,497 / 2,663
tasks	██████████████░░░░░░ 69.7%	31,933 / 45,814
cdp	████████████████░░░░ 81.0%	3,146 / 3,883
signals	████████████████░░░░ 81.1%	23,838 / 29,387
data_modeling	█████████████████░░░ 85.3%	7,343 / 8,611
notebooks	█████████████████░░░ 86.0%	7,794 / 9,060
actions	█████████████████░░░ 86.6%	717 / 828
cohorts	█████████████████░░░ 86.9%	5,648 / 6,496
product_tours	██████████████████░░ 87.9%	1,303 / 1,482
data_warehouse	██████████████████░░ 88.3%	12,036 / 13,635
exports	██████████████████░░ 88.4%	6,950 / 7,862
dashboards	██████████████████░░ 89.4%	5,983 / 6,693
engineering_analytics	██████████████████░░ 89.4%	6,441 / 7,202
conversations	██████████████████░░ 89.6%	17,234 / 19,241
alerts	██████████████████░░ 90.0%	4,342 / 4,827
mcp_analytics	██████████████████░░ 90.2%	2,883 / 3,198
streamlit_apps	██████████████████░░ 90.7%	2,630 / 2,901
error_tracking	██████████████████░░ 91.0%	10,925 / 12,004
slack_app	██████████████████░░ 91.1%	9,554 / 10,492
stamphog	██████████████████░░ 91.1%	4,056 / 4,450
marketing_analytics	██████████████████░░ 91.2%	12,058 / 13,222
product_analytics	███████████████████░ 92.5%	5,849 / 6,321
early_access_features	███████████████████░ 92.6%	1,287 / 1,390
ai_observability	███████████████████░ 92.8%	15,328 / 16,517
surveys	███████████████████░ 93.1%	5,771 / 6,197
web_analytics	███████████████████░ 93.2%	14,826 / 15,906
posthog_ai	███████████████████░ 93.2%	1,326 / 1,422
approvals	███████████████████░ 93.3%	3,437 / 3,682
reminders	███████████████████░ 93.4%	468 / 501
workflows	███████████████████░ 93.8%	6,943 / 7,399
endpoints	███████████████████░ 94.2%	8,655 / 9,192
skills	███████████████████░ 94.6%	3,158 / 3,337
review_hog	███████████████████░ 94.6%	6,912 / 7,303
experiments	███████████████████░ 95.4%	25,752 / 26,982
logs	███████████████████░ 95.5%	10,435 / 10,928
annotations	███████████████████░ 96.2%	732 / 761
revenue_analytics	███████████████████░ 96.3%	1,887 / 1,960
feature_flags	███████████████████░ 96.4%	17,371 / 18,023
replay_vision	███████████████████░ 96.4%	15,861 / 16,455
user_interviews	███████████████████░ 96.5%	2,638 / 2,734
customer_analytics	███████████████████░ 97.1%	9,797 / 10,085
warehouse_sources	███████████████████░ 97.2%	346,863 / 356,769
data_catalog	████████████████████ 97.7%	2,556 / 2,615
pulse	████████████████████ 98.4%	2,017 / 2,049

Report-only. Patch coverage = changed backend lines covered vs origin/master. Sorted lowest first.
Known gaps: lines covered only by Temporal tests show as uncovered; core line numbers may drift if master changed the same file.

[deployment-status-posthog]

Deploy status

Environment	Status	Deployed At	Workflow
dev	✅ Deployed	2026-07-29 15:07 UTC	Run
prod-us	✅ Deployed	2026-07-29 15:23 UTC	Run
prod-eu	✅ Deployed	2026-07-29 15:27 UTC	Run