feat(environments): Add new environments endpoint and move /projects to Project

[Twixes]

Problem

Step 4 of project environments implementation.

Changes

Added the /environments endpoint, which is based on the Team model. At the same time, moved /projects to the Project model, with a backward compatibility feature of "passing through" reads and writes of environment-specific settings to the Team with the same ID as the Project (this means that all existing TestTeam tests should continue to pass).

TODO for self before merging: check if project.name == project.passthrough_team.name currently holds for all projects in both regions.

How did you test this code?

TODO: Add /environments tests.

[posthog-bot]

This PR hasn't seen activity in a week! Should it be merged, closed, or further worked on? If you want to keep it open, post a comment or remove the stale label – otherwise this will be closed in another week. If you want to permanentely keep it open, use the waiting label.

[posthog-bot]

This PR was closed due to lack of activity. Feel free to reopen if it's still relevant.

[posthog-bot]

📸 UI snapshots have been updated

2 snapshot changes in total. 0 added, 2 modified, 0 deleted:

• chromium: 0 added, 2 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[posthog-bot]

📸 UI snapshots have been updated

4 snapshot changes in total. 0 added, 4 modified, 0 deleted:

• chromium: 0 added, 4 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[posthog-bot]

📸 UI snapshots have been updated

4 snapshot changes in total. 0 added, 4 modified, 0 deleted:

• chromium: 0 added, 4 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[github-actions[bot]]

Size Change: 0 B

Total Size: 1.1 MB

ℹ️ View Unchanged

Filename	Size
frontend/dist/toolbar.js	1.1 MB

_{compressed-size-action}

[posthog-bot]

📸 UI snapshots have been updated

2 snapshot changes in total. 0 added, 2 modified, 0 deleted:

• chromium: 0 added, 2 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[posthog-bot]

📸 UI snapshots have been updated

2 snapshot changes in total. 0 added, 2 modified, 0 deleted:

• chromium: 0 added, 2 modified, 0 deleted (diff for shard 1)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.

[Twixes]

Thanks for giving this a look @aspicer!

[posthog-bot]

📸 UI snapshots have been updated

1 snapshot changes in total. 0 added, 1 modified, 0 deleted:

• chromium: 0 added, 1 modified, 0 deleted (diff for shard 2)
• webkit: 0 added, 0 modified, 0 deleted

Triggered by this commit.

👉 Review this PR's diff of snapshots.