[EN-1892] feat(db): migrate existing default team names to project naming

[Kraci]

Why

Final part of the teams → projects rename stack (PR 1: dashboard copy + banner, PR 2: provisioning generator — merged). New signups now get "Personal Project" / "'s Project", but existing rows still hold the old generated names. This data-only migration renames those rows so existing users stop seeing stale "Default Team" naming in the dashboard.

What it does

Renames only the two exact forms the old generator (provisioning/names.go) ever produced:

• Default Team → Personal Project (exact match)
• <Word>'s Default Team → <Word>'s Project (suffix-anchored)

Customer-chosen names that merely contain the phrase (e.g. "My Default Team Stuff", "Best Team") are untouched. Slugs, IDs, memberships, API keys, and every other column are unchanged — verified that team_slug_trigger fires BEFORE INSERT only, so a name UPDATE cannot regenerate slugs.

Safety design

• Rollback map captured atomically: affected (id, old_name) rows are snapshotted into _backup_teams_default_team_rename in the same transaction as the update. Exact restore is a single UPDATE … FROM (documented in the migration); a follow-up migration drops the table after a soak period.
• Idempotent: a re-run matches zero rows.
• Observable: per-branch row counts are RAISE NOTICEd into migrator logs.
• Down is a deliberate no-op: a pattern-based reverse would rewrite teams legitimately named "…'s Project" before this ran.

Verified locally against Postgres 16 with the real slug trigger: six seed cases (bare, possessive, mid-string, "Best Team", name==email, unrelated) — only the first two change, second run is a no-op, and the restore drill from the backup table reproduces the original state exactly.

Pre-merge gates (do not merge until checked)

• Prod pre-flight recorded in this PR: per-branch counts + sample review (see pre-flight comment below; raw sample kept off this public PR — it contains customer-derived names)
• PR 2 generator deployed to prod — as of 2026-07-22 old-style names are still being created (280 in the last 24h), so running this now would leave a moving target. Verify new signups get "Personal Project" before merging.
• Second reviewer with prod restore authority named and approved
• Follow-up ticket filed to drop _backup_teams_default_team_rename after soak

Known accepted non-effects: billing/Stripe keep the provisioning-time name on historical invoices; rows where name equals the user's email stay as-is (handled by the render-time transform from PR 1); mid-string stragglers remain by design.

[gemini-code-assist]

Caution

The consumer version of Gemini Code Assist on GitHub has been sunset. All code review activity has officially ceased.

[linear-code]

EN-1892

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[blacksmith-sh]

Found 1 test failure on Blacksmith runners:

Failure

Test	View Logs
github.com/e2b-dev/infra/packages/api/internal/sandbox/storage/redis/ TestStorageLocker_ObtainUsesProvidedContext	View Logs

^{Need help on this PR? Tag /codesmith with what you need.}

[codecov]

❌ 3 Tests Failed:

Tests completed	Failed	Passed	Skipped
3469	3	3466	9

View the top 3 failed test(s) by shortest run time

github.com/e2b-dev/infra/tests/integration/internal/tests/api/templates::TestTemplateBuildRUN

Stack Traces | 0s run time

=== RUN   TestTemplateBuildRUN
=== PAUSE TestTemplateBuildRUN
=== CONT  TestTemplateBuildRUN
--- FAIL: TestTemplateBuildRUN (0.00s)

github.com/e2b-dev/infra/tests/integration/internal/tests/api/templates::TestTemplateBuildFromTemplateStartCommand

Stack Traces | 163s run time

=== RUN   TestTemplateBuildFromTemplateStartCommand
=== PAUSE TestTemplateBuildFromTemplateStartCommand
=== CONT  TestTemplateBuildFromTemplateStartCommand
    build_template_test.go:133: test-ubuntu-start-base: [info] Building template n219nbkfxg9w3ftrxiy5/684dafc8-4ff4-4b06-86c3-be1a987b3136
    build_template_test.go:133: test-ubuntu-start-base: [info] [base] FROM ubuntu:22.04 [f9f564014e009a9561a82bf8c84f9314242971e833fb019936654ecba452f184]
    build_template_test.go:133: test-ubuntu-start-base: [info] Base Docker image size: 30 MB
    build_template_test.go:133: test-ubuntu-start-base: [info] Creating file system and pulling Docker image
    build_template_test.go:133: test-ubuntu-start-base: [info] Uncompressing layer sha256:d6834b4a794c03efa2c998853e64969fa8851b11b2ade63292268872a37759d0 30 MB
    build_template_test.go:133: test-ubuntu-start-base: [info] Uncompressing layer sha256:fe2a51aa6130489d11431e164fcf026637492f7cf0cbde8eef218b8c39c0ad8c 13 MB
    build_template_test.go:133: test-ubuntu-start-base: [info] Uncompressing layer sha256:8c4b1b28875140ed3abacaf16ad0d696f6bef912f52d2148f261a23e3349465b 168 B
    build_template_test.go:133: test-ubuntu-start-base: [info] Layers extracted
    build_template_test.go:133: test-ubuntu-start-base: [info] Root filesystem structure: bin, boot, dev, etc, home, lib, lib32, lib64, libx32, media, mnt, opt, proc, root, run, sbin, srv, sys, tmp, usr, var
    build_template_test.go:133: test-ubuntu-start-base: [info] Provisioning sandbox template
    build_template_test.go:133: test-ubuntu-start-base: [info] Provisioning was successful, cleaning up
    build_template_test.go:133: test-ubuntu-start-base: [info] Sandbox template provisioned
    build_template_test.go:133: test-ubuntu-start-base: [info] [base] DEFAULT USER user [49e586c2171254c6bc4a09e84eedac32dbcf113a158c24248129af2f49cbed74]
    build_template_test.go:133: test-ubuntu-start-base: [info] [builder 1/2] ENV START_ENV start_value [22ecb2c2ce1b1d262e37d2cd71b90e6d33fdf99ecfca361e1a2c284afb7fc08a]
    build_template_test.go:133: test-ubuntu-start-base: [info] [builder 2/2] WORKDIR /start/workdir [f841574929b92d8b6e15a8fc6477f0f1e568eac3d30ae7110a831bbcea62e921]
    build_template_test.go:133: test-ubuntu-start-base: [info] [finalize] Finalizing template build [a509f6bf83c53e4844e4d62e9e93f7dae0d5706e070f3f756fe6d227a04976e4]
    build_template_test.go:133: test-ubuntu-start-base: [error] Build failed: An internal error occurred. Please try again or contact support with the build ID.
    build_template_test.go:700: Build failed: {<nil> An internal error occurred. Please try again or contact support with the build ID. <nil>}
--- FAIL: TestTemplateBuildFromTemplateStartCommand (162.88s)

github.com/e2b-dev/infra/tests/integration/internal/tests/api/templates::TestTemplateBuildRUN/Single_RUN_command

Stack Traces | 163s run time

=== RUN   TestTemplateBuildRUN/Single_RUN_command
=== PAUSE TestTemplateBuildRUN/Single_RUN_command
=== CONT  TestTemplateBuildRUN/Single_RUN_command
    build_template_test.go:133: test-ubuntu-run: [info] Building template 8b4v6l6d2j6s928wry18/25322a3b-3bc3-4f82-afce-d7d80e7d5034
    build_template_test.go:133: test-ubuntu-run: [info] [base] FROM ubuntu:22.04 [f9f564014e009a9561a82bf8c84f9314242971e833fb019936654ecba452f184]
    build_template_test.go:133: test-ubuntu-run: [info] Base Docker image size: 30 MB
    build_template_test.go:133: test-ubuntu-run: [info] Creating file system and pulling Docker image
    build_template_test.go:133: test-ubuntu-run: [info] Uncompressing layer sha256:d6834b4a794c03efa2c998853e64969fa8851b11b2ade63292268872a37759d0 30 MB
    build_template_test.go:133: test-ubuntu-run: [info] Uncompressing layer sha256:fe2a51aa6130489d11431e164fcf026637492f7cf0cbde8eef218b8c39c0ad8c 13 MB
    build_template_test.go:133: test-ubuntu-run: [info] Uncompressing layer sha256:8c4b1b28875140ed3abacaf16ad0d696f6bef912f52d2148f261a23e3349465b 168 B
    build_template_test.go:133: test-ubuntu-run: [info] Layers extracted
    build_template_test.go:133: test-ubuntu-run: [info] Root filesystem structure: bin, boot, dev, etc, home, lib, lib32, lib64, libx32, media, mnt, opt, proc, root, run, sbin, srv, sys, tmp, usr, var
    build_template_test.go:133: test-ubuntu-run: [info] Provisioning sandbox template
    build_template_test.go:133: test-ubuntu-run: [info] Provisioning was successful, cleaning up
    build_template_test.go:133: test-ubuntu-run: [info] Sandbox template provisioned
    build_template_test.go:133: test-ubuntu-run: [info] [base] DEFAULT USER user [49e586c2171254c6bc4a09e84eedac32dbcf113a158c24248129af2f49cbed74]
    build_template_test.go:133: test-ubuntu-run: [info] [builder 1/1] RUN echo 'Hello, World!' [c72b4f813c2a16b0fc1a1c5da7b1365a304cbac516b22dc304a71f70aae48ac0]
    build_template_test.go:133: test-ubuntu-run: [info] [builder 1/1] [stdout]: Hello, World!
    build_template_test.go:133: test-ubuntu-run: [info] [finalize] Finalizing template build [92c524e30533398ebb41ce04c2596130f0cdecc9aa328e28fdb16a1b11f61d62]
    build_template_test.go:133: test-ubuntu-run: [error] Build failed: An internal error occurred. Please try again or contact support with the build ID.
    build_template_test.go:166: Build failed: {<nil> An internal error occurred. Please try again or contact support with the build ID. <nil>}
--- FAIL: TestTemplateBuildRUN/Single_RUN_command (162.88s)

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