Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

All of v2.1.227 Home All releases olderv2.1.226 v2.1.228newer
Claude Code v2.1.227

Optional key/value storage backend threaded through background sessions, plugins and the daemon

Not switched on
Useful1 Signal3
Storage Backend

Background jobs, the daemon, plugin caches and plan docs can all route through the optional storage backend.

Many state files gained storage-backend paths with filesystem fallbacks, and nothing visibly attaches a backend.

What

A large amount of state that was read and written directly as files can now go through an optional key/value storage backend, with the file path kept as a fallback at every call site. Covered: background job state.json and adopt.json, the daemon roster.json, pty pid files, the host-managed tombstone, bridge pointer files, plugin cache and .in-use markers, plan and workshop docs, task lists, and daemon log tailing. Nothing in the source shows what attaches the backend, so whether it is used is decided elsewhere.

Details
  • UI code reaches the backend through a new React context named storageV5; when it is undefined, every path falls back to plain filesystem access
  • new error text includes "adopt.json v5 write failed", "bg roster.json v5 read failed", "host-managed tombstone v5 write failed" and "[bg] v5 jobs listing failed: cursor did not advance"
Evidence

[bg] v5 jobs listing failed: cursor did not advance

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.227 →