browser/openspec/changes/implement-durable-platform-storage/tasks.md

1. OpenSpec Artifacts

• 1.1 Create proposal, design, spec, and tasks for durable metadata and log storage.
• 1.2 Validate the change with openspec validate implement-durable-platform-storage --strict.

2. Durable Metadata Store

• 2.1 Add platform storage configuration for backend, metadata path, data directory, and log directory.
• 2.2 Implement a file-backed metadata store that persists repository snapshots and reloads them.
• 2.3 Wire platform startup to use the configured durable store by default while keeping memory store available.
• 2.4 Add tests proving metadata persistence and default admin idempotency across store reloads.

3. Segmented Log Body Store

• 3.1 Add a LogBodyStore service boundary with append, duplicate lookup, and cursor query operations.
• 3.2 Implement an in-memory log body store for tests and a file-segment log body store for durable startup.
• 3.3 Refactor log ingest/query service code to use LogBodyStore and persist before advancing stream metadata.
• 3.4 Add tests for duplicate acknowledgement and cursor query after log store reload.

4. Documentation And Verification

• 4.1 Document storage backend choices and log storage guidance in platform protocol/API docs.
• 4.2 Run cd platform && go test ./....
• 4.3 Run scripts/check-structure.sh.
• 4.4 Run openspec validate implement-durable-platform-storage --strict.