chore(warehouse-sources): promote the pylon source to GA

[Gilbert09]

Problem

Anyone connecting a source in the data warehouse wizard sees Pylon labelled "alpha", which reads as "this might not work" and discourages people from picking it. The connector has earned its way out of that label: it has been live for over three months, and its imports failed 0.0% of the time over the last 7 days (the bar is under 2.5%).

Changes

• The Pylon tile in the source catalog now shows no alpha badge, so people see a connector we stand behind.
• releaseStatus on the Pylon source config moves from ReleaseStatus.ALPHA to ReleaseStatus.GA. That is the value /api/public_source_configs/ surfaces and the frontend renders.
• Nothing gates Pylon today: it carries no unreleasedSource flag and no featureFlag, so there is no gating to remove. The test now asserts both stay absent.
• No behavior change. Schemas, endpoints, pagination, and sync logic are untouched.

How did you test this code?

• Ran products/warehouse_sources/backend/temporal/data_imports/sources/pylon/tests/test_pylon_source.py locally: 12 passed.
• The updated assertion catches a regression that would re-hide Pylon behind a gate, by pinning unreleasedSource, featureFlag, and releaseStatus together.
• Not run: the wizard UI was not rendered. The label is read straight from this field, and no frontend code changed.

Release status

• No feature flag controls this change
• This change is behind a feature flag and is not available to users
• This change makes a previously flagged feature available to everyone

Automatic notifications

• Publish to changelog?

Docs update

None.

🤖 Agent context

Autonomy: Fully autonomous

Agent: Claude Code, Opus 5

Skills invoked: /implementing-warehouse-sources, /writing-pr-descriptions.

No duplicate: searched open PRs for "Pylon", "releaseStatus", and "promote", and listed every open PR by the maintainer. The only other Pylon PR is #106228, which swaps the source icon and does not touch release status. #108805 is the same promotion for Neon and was used as the pattern for this diff.

Public artifact: the diff and this description carry no material from the agent session beyond the two aggregate metrics quoted above.

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🤖 Generated with Claude Code

[trunk-io]

😎 Merged successfully - details.

[Copilot]

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[stamphog]

Approved.

Single-field label change from alpha to GA with a matching test update; contained, reversible, no behavior change.

• Author wrote 100% of the modified lines and has 0 merged PRs in these paths (familiarity STRONG).
• copilot-pull-request-reviewer[bot] reviewed the current head.

Gate mechanics and policy version

Gate		Result
prerequisites	✓	all clear
deny-list	✓	no deny categories matched
size	✓	2L, 1F substantive, 7L/2F incl. docs/generated/snapshots — within ceiling
tier	✓	T1-agent / T1a-trivial (7L, 2F, single-area, chore)
stamphog 2.3.1		.stamphog/policy.yml @ 6e5f17a · reviewed head 6e5f17a

[github-actions]

🤖 CI report

⚠️ Trunk lane — backend Python lane (py:product:warehouse_sources)

This PR is assigned to the backend Python lane (py:product:warehouse_sources). It runs backend Python tests and may merge in parallel with PRs in other lanes.

✅ Duplication (Python) — clean

New Python code duplication introduced by this branch. Fails at 70+ tokens in app code, or 150+ tokens when both copies live in test files. Advisory while the gate proves itself: extract a shared helper instead of copying.

✅ Duplication (TypeScript) — clean

New TypeScript code duplication introduced by this branch. Fails at 70+ tokens in app code, or 150+ tokens when both copies live in test files. Advisory while the gate proves itself: extract a shared helper instead of copying.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 1c66a26 and 6e5f17a.

📒 Files selected for processing (2)

• products/warehouse_sources/backend/temporal/data_imports/sources/pylon/source.py
• products/warehouse_sources/backend/temporal/data_imports/sources/pylon/tests/test_pylon_source.py

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📝 Walkthrough

Walkthrough

The Pylon source configuration now sets its release status to GA instead of alpha. The test expects the GA status and verifies that featureFlag and unreleasedSource are unset.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 6e5f1

Pylon will be classified as generally available. The selected value is supported by the shared status contract, and no concrete merge-blocking risk is evidenced.

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description is complete and matches the required template. It explains the user impact, lists the code and test changes, identifies test coverage and limitations, selects exactly one release-statu…

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[trunk-io]

   

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[Gilbert09]

/trunk merge

[deployment-status-posthog]

Deploy status

Environment	Status	Deployed At	Workflow
dev	✅ Deployed	2026-09-30 09:38 UTC	Run
prod-us	✅ Deployed	2026-09-30 09:52 UTC	Run
prod-eu	✅ Deployed	2026-09-30 09:54 UTC	Run