> For the complete documentation index, see [llms.txt](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ai-os-and-trend-finder.gitbook.io/ai-os-and-trend-finder-docs/.spec_system/archive/phases/phase_30/session_05_persistence_and_save_contracts.md).

# Session 05: Persistence And Save Contracts

**Session ID**: `phase30-session05-persistence-and-save-contracts` **Status**: Not Started **Estimated Tasks**: \~12-25 **Estimated Duration**: 2-4 hours

***

## Objective

Add versioned browser-local persistence for preferences, wallet, ledger, run history, saves, and reset behavior.

***

## Scope

### In Scope (MVP)

* Define Zod schemas for preferences, wallet, ledger, save metadata, run history, and future migration boundaries.
* Store tiny preferences in `localStorage` and larger state in IndexedDB.
* Add parsers and migration tests for valid, missing, stale, and malformed local data.
* Wire save/load/reset behavior into the React shell and game runtime boundary at coarse state boundaries.
* Ensure generated private runtime data never enters committed files.

### Out of Scope

* Simulation and combat logic (Session 06).
* Run-affecting upgrades and asset wiring (Session 07).

***

## Prerequisites

* [ ] Session 04 wallet and ledger contracts in place.

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## Deliverables

1. `save-schema` and persistence helpers with versioned parsing.
2. Local wallet, ledger, preferences, run history, and save storage plumbing.
3. Reset controls for Settings and run-level restart behavior.

***

## Success Criteria

* [ ] Preferences survive refresh, malformed data is handled safely, and reset clears only AI Rogue local state.
* [ ] Wallet and ledger persistence preserves claim idempotency across reloads.
* [ ] Save migration tests prove older or partial records do not crash the extension.


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