How to Recover Vanished Chat History in Google Antigravity IDE

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Developers using Google Antigravity IDE have reported chat histories disappearing from the sidebar after updates, reinstalls, cache clears, or periods of inactivity. The data is not actually deleted but enters a dormant state on disk, as the IDE avoids loading hundreds of conversation trajectories into frontend memory simultaneously. Conversations are stored in SQLite database files under ~/.gemini/antigravity-ide/conversations/ and can be reactivated by triggering a sync event through the IDE's internal Language Server daemon. One discovered workaround involves submitting a comment via an open artifact's Review menu, which wakes the dormant conversation and restores it to the sidebar instantly. For cases without an open artifact, the article outlines two open-source tools — a VS Code extension and a standalone Python script — designed to restore conversations on demand.

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