fix(ait): persist sandbox storage across reloads

[imjlk]

Summary

• persist AIT sandbox storage through browser reloads with a configurable namespace
• retain isolated in-memory fallback behavior when browser storage is unavailable or becomes unusable
• recover from corrupt persisted values without repeated parse failures
• expose persistence degradation through focused diagnostics

Verification

• adapter-ait: 52 tests passed
• adapter-ait typecheck passed
• workspace pnpm check passed
• global Open Code Review: 0 comments

Summary by CodeRabbit

• New Features

  • AIT sandbox data now persists across browser reloads when browser storage is available.
  • Storage keys are isolated using a configurable namespace.
  • Custom storage backends can be provided when needed.

• Bug Fixes

  • Automatically falls back to in-memory storage when browser storage is unavailable or fails.
  • Handles corrupted saved data safely and prevents repeated storage failures.
  • Preserves the latest sandbox values during temporary persistence issues.

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Review details

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 84c65efb-64d0-4c1c-98c1-5188e6a2b230

📥 Commits

Reviewing files that changed from the base of the PR and between c64f042 and c7574e9.

📒 Files selected for processing (1)

• .sampo/changesets/ait-sandbox-persistent-storage.md

📝 Walkthrough

Walkthrough

AIT sandbox storage now supports configurable, namespaced browser persistence, with JSON serialization, corruption handling, and automatic fallback to in-memory storage. Tests cover persistence across gateway recreation and storage failure scenarios.

Changes

AIT sandbox storage

Layer / File(s)	Summary
Storage contract and bridge wiring adapters/ait/src/index.ts	Adds exported storage interfaces, configurable storage injection, namespaced keys, and an in-memory cache.
Persistent load and save behavior adapters/ait/src/index.ts	Loads and saves JSON values through persistent storage, handles corrupt data, and disables persistence after failures while retaining memory behavior.
Persistence behavior validation adapters/ait/src/index.test.ts, .sampo/changesets/ait-sandbox-persistent-storage.md	Tests gateway recreation, save/read failures, corrupt values, cleanup failures, and records the patch changeset.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Sandbox
  participant MemoryCache
  participant PersistentStorage
  Sandbox->>MemoryCache: Check cached key
  MemoryCache-->>Sandbox: Return cached value when present
  Sandbox->>PersistentStorage: Read or write namespaced JSON value
  PersistentStorage-->>Sandbox: Return value or throw failure
  Sandbox->>MemoryCache: Hydrate or retain in-memory value

Loading

Possibly related PRs

• imjlk/mpgd-kit#90: Both changes modify AIT sandbox storage load/save semantics and JSON cloning.

Poem

I’m a bunny with storage tucked under my ear,
Persistent through reloads, yet memory stays near.
When local shelves crumble, I hop back in-flight,
Corrupt crumbs are cleared, fresh values turn right.
Namespaced keys keep each burrow just so—
A happy sandbox wherever I go!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly states the main change: persistent AIT sandbox storage across reloads.
Description check	✅ Passed	Covers the required Summary and Verification sections; only the Notes section is missing.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/ait-sandbox-persistent-storage

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[imjlk]

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Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.sampo/changesets/ait-sandbox-persistent-storage.md:
- Line 2: Update the `@mpgd/adapter-ait` changeset release level from patch to
minor to reflect the newly exported AitSandboxStorage and
CreateAitSandboxBridgeOptions interfaces and the optional options parameter
added to createAitSandboxBridge.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d3990996-e885-4956-9a69-9cc530ca44fc

📥 Commits

Reviewing files that changed from the base of the PR and between 5f4e714 and c64f042.

📒 Files selected for processing (3)

• .sampo/changesets/ait-sandbox-persistent-storage.md
• adapters/ait/src/index.test.ts
• adapters/ait/src/index.ts