Pi Chat v0.5.0

Pi Chat v0.5.0

Reliability and maintainability release

Pi Chat v0.5.0 is the post-0.4.8 reliability release. Pi remains the sole authority for Runtime execution, Sessions, JSONL, Prompt delivery, retry, Steer, tools, models, and transcript state.

The runnable Windows package is:

pi-chat-windows-0.5.0.zip

The ZIP, portable SHA-256 record, manifest, and embedded build identity are produced from the same tagged source revision.

Included

• Web application and server decomposition completed without changing Runtime, Session, FIFO, generation-fencing, lease, or response-before-release authority rules.
• Pi SSE handling split into message/streaming, Runtime lifecycle, workspace/session, queue/extension, and failure/control domains while keeping admission and fencing in the central handler.
• Prompt sending split into preparation, Runtime/Draft warm-up, acknowledgement reconciliation, and failure/uncertain-delivery handling.
• New-draft first-send Prompt identity is bound before retry lifecycle frames can race the browser acknowledgement.
• Prompt acknowledgement, Queue projection, native Steer, stale-pane, and uncertain-delivery paths retain explicit reconciliation boundaries.
• Nested Prompt route host Proxy usage was removed while preserving the active Primary running write-through behavior.
• Several residual any aliases were replaced with the actual authority and projection types.
• App and server decomposition targets remain within their maintained size ranges without introducing a product rename.

Verification

The release source passed:

npm run typecheck
npm run test:preflight
npm run test:source
npm run check:committed-text

The release package is source-authority aligned with the tagged revision and includes the generated build identity, Windows launcher assets, Pi Runtime resources, and portable checksum sidecar.

Known boundaries

• Pi Chat remains loopback-only, local-first, and Windows-first.
• The source archive is source-only. Use the Windows ZIP for the runnable packaged application.
• A supported Node.js 22.19 or newer installation and a compatible authenticated Pi installation are required.
• Do not restart a live installation while Sessions, queues, confirmations, or Runtime operations are active.

Installation

1. Install Node.js 22.19 or newer.
2. Install and authenticate Pi 1.0.1 or a compatible Pi with the required RPC surface.
3. Download pi-chat-windows-0.5.0.zip and its .sha256 sidecar.
4. Verify the checksum, extract the ZIP, and run start-pi-chat.cmd or start-pi-chat-ui.ps1.
5. Open the loopback listener shown by the launcher, normally http://127.0.0.1:30170.