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runa/CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

[Unreleased]

Changed

  • Require an explicit runa-cli subcommand: repl starts the interactive session, and each image operation is also available as a one-shot command.
  • Rename the REPL actor listing command from actors to ps, remove its cancel command, and rename mise run cli to mise run repl.

Fixed

  • Exit the REPL on Ctrl+C and complete the WebSocket close handshake instead of returning to the prompt.
  • Complete the WebSocket close handshake when the CLI exits, preventing normal disconnects from producing a connection-reset protocol error on the server.

Added

  • Mutable image-owned source files organized beneath source/, with independent commit history and generated readable revision IDs. Spawn compiles the current working file whether committed or not.

  • Internal sender/data envelopes and actor contexts with send and send_from; sends remain transactional and actors cannot construct privileged system commands.

  • Graceful stop with optional on_shutdown(state), force kill, restart, pause/resume, and safe-boundary reload/become.

  • VS Code image source filesystem, file-context spawn actions, and source commit/history/rollback controls.

  • VS Code behavior explorer with revision history, implementation identities, and read-only Rune source documents isolated by connection and revision. Image notifications refresh behavior listings without changing historical source documents.

  • VS Code actor spawning with explicit behavior and initial state, structured message sending, pause/resume/stop/restart controls, and explicit scheduler ticks. JSON inputs preserve i64 integers and $actor/$record markers.

  • Lossless, size-bounded mutation requests and real-server/extension-host coverage for actor controls.

  • Non-destructive image_changed server notifications with coalesced per-connection revisions and automatic VS Code tree/inspector refresh.

  • Tests for WebSocket subprotocol negotiation, invalid messages, multi-client notifications, and automatic mailbox/lifecycle/failure inspector updates.

  • Initial TypeScript VS Code extension with explicit localhost connection management, an actor explorer, and read-only state/mailbox/execution snapshots.

  • Bounded protocol-v3 extension client with lossless 64-bit JSON integers, correlation checks, disconnect handling, and no automatic retries.

  • Extension transport tests, real Rust-server interoperability coverage, and a VS Code host test for inspector refresh and reconnect isolation.

  • Portable structured actor values: null, booleans, signed 64-bit integers, strings, lists, records, and distinct NanoID actor references.

  • JSON state/message literals in the REPL, including named $actor references, $record escaping, and actor-reference completion inside nested values.

  • Value conversion limits and tests for nested-state isolation, copied sends, cyclic/unsupported Rune output, and all-or-nothing structured transitions.

  • Reusable loopback TCP protocol client with bounded messages, correlation checks, explicit connection failures, and no automatic request retries.

  • Multi-client and reconnect tests proving that actors remain in the server-owned image after development clients disconnect.

  • Typed, instruction-sliced Rune invocations with preserved async execution, wake-driven resumption, and cancellation tests.

  • Minimal single-worker actor runtime with bounded FIFO mailboxes, private integer state, structured messages, immutable implementation IDs, explicit message effects, inspection, lifecycle events, stop, and restart.

  • Runnable two-actor counter demonstration and tests for runaway fairness, pending-message isolation, failures, backpressure, and all-or-nothing effects.

  • Interactive local CLI for spawning actors, sending messages, advancing ticks, inspecting actors/events, and stopping/restarting actors.

  • Versioned BLAKE3 source and implementation identities, original-source retention, a Rune compile-input fingerprint, and an in-memory compiled artifact cache.

  • In-memory named behavior revisions with optimistic publish checks, immutable history, rollback revisions, and runtime installation at idle handler boundaries.

  • CLI commands for named behavior publishing, history, rollback, and installation, plus mise run run to launch the local executable.

  • Cooperative actor pause/resume between scheduler ticks, preserving active invocations and emitting lifecycle events.

  • Explicit safe-point state migration during implementation installation, with atomic failure behavior and migration events.

  • Explicit invocation cancellation that requeues the reserved message for retry, exposed in the CLI and documented with native side-effect caveats.

  • Active actor execution telemetry in snapshots: completed VM steps, instruction pointer, and call-frame depth.

  • Trusted in-process runa-image-api service boundary for code and actor operations, now used by the local CLI.

  • Versioned, transport-neutral runa-protocol request, response, and event DTOs with serde support and request validation.

  • Transport-neutral runa-server dispatcher routing protocol commands through the image API with typed replies and error codes.

  • Local JSON-lines stdio transport for the protocol dispatcher, with a 1 MiB request limit and explicit malformed-input failures.

  • Reusable local child-process client for issuing correlated protocol requests and shutting down the server process cleanly.

  • Loopback-only TCP JSON-lines endpoint for local development clients, sharing the same live image as stdio and limiting concurrent clients.

  • Execution-model decision and Phase 1 runtime documentation.

  • Lifecycle tests proving failed-message retry from committed state and stop/restart preservation of reserved-first FIFO order.

  • NanoID-based public actor references, explicit behavior-and-state spawning, named REPL actor bindings, tab completion, and command history navigation.

  • NanoID-based public actor references, explicit behavior-and-state spawning, named REPL actor bindings, tab completion, and command history navigation.

  • Runnable Phase 0 experiment pinned to Rune 0.14.2, covering script execution, native calls, async suspension, instruction budgets, frame inspection, stepping, and compiled-code sharing across isolated VMs and threads.

  • Tests for feasibility results, invalid source, runtime errors, independent stacks, and cancellation by dropping suspended execution.

  • Rune feasibility report with measured timings, shallow object sizes, limitations, and a proposed Phase 1 execution model.

  • Initial Rust workspace with the runa binary and a runa-rune library scaffold for Phase 0. Rune integration is not implemented yet.

  • Project README and agent guidelines.

  • Base directories for architectural decisions, default image scripts, development automation, examples, system tests, and the VS Code extension.

  • Mise tasks for formatting, Clippy linting, workspace tests, and sequential pre-commit validation.

  • Tombi, rustfmt, and Clippy configurations.

Changed

  • Breaking: Protocol v4 spawns by source path (for example actors/counter). Rune handlers are now handle(ctx, state, sender, message) -> state, with sends through the context instead of returned transition tuples.

  • Breaking: CLI commit <path> replaces publishing; history and rollback use file paths and generated revision IDs. Source saves, commits, and actor reloads are separate operations.

  • Renamed the server executable/crate from runa-server to runa, and the REPL from runa to runa-cli. The server now listens on 127.0.0.1:3737 by default.

  • Clap derive/env argument parsing for both executables, including generated help/version, RUNA_LISTEN / RUNA_CONNECT, and flag-over-environment precedence.

  • mise run start now starts the server; mise run cli launches the REPL.

  • Replaced the plain TCP JSON-lines transport with loopback-only WebSockets using the required runa-debug subprotocol in the server, REPL, and VS Code. Stdio framing and version 3 request/response shapes are unchanged.

  • Renamed the local REPL mise task from run to start.

  • Protocol v3 and Rune's two-argument handle(state, message) replace the temporary integer-only state and kind/value/target_ref message envelope. Returned sends now contain (actor_reference, message) pairs; migrations, snapshots, and events preserve structured values.

  • The REPL now connects to the localhost server rather than embedding its own image. Start the server first; --connect selects a loopback endpoint.

  • TCP server startup publishes the bundled counter behavior once; connecting or disconnecting clients does not reset behavior revisions or actor state.

  • Interactive CLI commands now use the versioned protocol dispatcher instead of calling the image API directly.

  • Protocol version 2 replaces numeric actor IDs with NanoID actor references and adds optional target references for message effects.

  • Protocol version 2 replaces numeric actor IDs with NanoID actor references and adds optional target references for message effects.

  • Actor implementation IDs now identify compiled source/configuration content rather than using sequential process-local numbers.

  • Expanded the architecture specification with crate ownership and dependency boundaries, and moved it to docs/architecture.md.

  • Required agents to pass mise run pre-commit before every commit and document user-visible changes in this changelog.

Removed

  • Stdio protocol transport and child-process client; external clients now use runa-debug WebSockets exclusively. Removed the serve and serve-network mise tasks.