fix(engine): avoid Cloud migration ID collisions

[miyaontherelay]

Summary

• Move the unpublished engine migrations to 0065 and 0066, keeping Cloud's existing 0062–0064 migration IDs intact.
• Update the migration tests and upgrade notes to use the reserved IDs.

Why

The Cloud Worker has already used IDs 0062–0064 for desktop and mobile tables. Publishing engine migrations at 0062 and 0063 would collide with that deployed migration history and fail the Cloud migration parity gate.

Validation

• Engine suite: 108 files, 1,308 tests passed.
• Migration tests: 13 passed.
• Engine typecheck passed.
• Published migration immutability check passed.
• git diff --check passed.

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Note

Low Risk
Documentation and test expectation updates plus migration file renames; no runtime or schema logic changes beyond avoiding duplicate migration IDs in hosted deployments.

Overview
Reserves engine migration IDs 0065 and 0066 for direct-DM idempotency and node rotation recovery so they no longer collide with Relaycast Cloud’s already-deployed 0062–0064 history (desktop/mobile tables). The migration SQL is unchanged; only filenames/IDs and references move.

Root and @relaycast/engine changelogs now tell hosts to apply 0065_direct_dm_idempotency.sql and 0066_node_rotation_recovery.sql before upgrade. compactMigrations.test.ts and taskMigration.test.ts expect the new names and migration sequence.

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📥 Commits

Reviewing files that changed from the base of the PR and between ae734dc and 3d6cc2f.

📒 Files selected for processing (6)

• CHANGELOG.md
• packages/engine/CHANGELOG.md
• packages/engine/src/db/__tests__/compactMigrations.test.ts
• packages/engine/src/db/__tests__/taskMigration.test.ts
• packages/engine/src/db/migrations/0065_direct_dm_idempotency.sql
• packages/engine/src/db/migrations/0066_node_rotation_recovery.sql

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

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No issues found across 6 files

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