Remove legacy compat code in the next major release #1482

Candidates

1. apify upgrade --force — upgrade.ts#L63. Marked [DEPRECATED] and ignored since fix: upgrade command should always check when manually ran #897 (2025-08). Removing it makes -f an unknown-flag error.
2. apify.json → .actor/actor.json migration — useActorConfig.ts#L92 and the init branch at init.ts#L148. Added in feat: Use .actor/actor.json file (#292) #296 (2022-11). After removal, a project with only apify.json should get a clear error that points to the migration guide.
3. apify_storage → storage rename — run.ts#L270 and LEGACY_LOCAL_STORAGE_DIR. Added for SDK v3 in chore: update everything to Crawlee, SDK v3 and new template structure #278 (2022-08).

Out of scope

• v0 → v1 local and telemetry state migrations (2025) — too recent.
• auth.json and keyring migrations (2026) — still needed.

Done when

• Each item is removed or explicitly kept, with a reason.
• MIGRATIONS.md lists the removed behavior.

🤖 Generated with Claude Code