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Changelog

All notable changes to the CS Bridge VS Code extension will be documented in this file.

The format is based on Keep a Changelog.

[0.1.1] - 2026-07-18

Fixed

  • Cross-window UI stutter when a session window opens — the cross-window sync watcher re-read and re-parsed every session file on every record write, so opening a new remote window (or any session change) briefly hung every other open window. It now reads only the single record that changed, and coalesces the duplicate filesystem events macOS fires per write. (#107)

[0.1.0] - 2026-07-18

Fixed

  • linkspan socket permission clash on shared compute nodes — the in-allocation control socket now binds at /tmp/csbridge-<id>.sock directly in the sticky, world-writable /tmp, instead of a shared /tmp/csbridge/ directory that the first user to launch on a node would own (mode 0755) and lock every other user out of, failing with bind: permission denied. (#105)

[0.0.5] - 2026-07-16

Added

  • Utilization metrics + Stats view — each finished run records CPU/memory efficiency from sacct; a summary tab and the new Stats view keep the history. (#82, #83, #84)
  • Wall-time session summary — a status bar tracks elapsed time; a summary tab opens when a session ends. (#76)
  • Submit-filter validation — Add/Save preflights the script via sbatch --test-only and saves only on pass, showing the site's own rejection. (#72)
  • Live resource metrics on the session card — each running session shows live CPU/memory samples pulled from linkspan. (#87)
  • (No Allocation) allocation option — pick it to omit --account on clusters that don't require an allocation. (#89)
  • Clear a session's run history from its card. (#92)

Changed

  • Graceful Stop from the remote window — Stop reloads the window to local and finishes the cancel + summary there; the session holds stopping until sacct confirms. (#85)
  • Connect spinner; Switch focuses — Connect stays disabled until the window registers (no duplicate windows); Switch focuses the live window. (#73)
  • Monitoring rewrite — one lock-free poll loop per session; relay-live sessions ping the tunnel and skip sacct; connect tolerates an already-forwarded tunnel. (#77)
  • Per-cluster window names — <cluster>-<session> instead of cshost-<uuid>. (#77)
  • PENDING shown as QUEUED. (#75)
  • linkspan port pinned at launch — tunnel URL derived without scraping logs. (#75)
  • Atomic sessions.json writes — temp-file + rename, no truncation on crash. (#81)
  • Per-session storage — sessions.json and the run store split into per-session files (sessions/{id}.json, metrics/{id}.json), cutting cross-window write contention. (#91, #92)
  • SSH auth prompts rendered verbatim in a monospace webview, so password/Duo challenges stay readable. (#88)
  • New extension logo — refreshed the CS Bridge activity-bar and command icons (csbridge.svg/csbridge.png).

Fixed

  • Dead node behind the Dev Tunnels edge — require linkspan's {"status":"ok"} body so wall-time TIMEOUT is detected instead of staying green. (#70)
  • Missing node count — always emit #SBATCH --nodes=1. (#69)
  • New sessions sorting to the bottom — reissue legacy session-<ts> ids as UUIDv7 on load. (#71)
  • (No Allocation) leaking as a bogus --account — its label no longer reaches sbatch, which had failed session create with "Invalid account or account/partition combination". (#97)
  • Half-open Dev Tunnel relay — a relay that goes half-open (keep-alive failing while the SDK still reports Connected) now rebuilds itself, so the SSH forward self-heals instead of hanging until a manual reconnect. (#98)
  • sacct efficiency accounting — utilization is read from the .batch step only, fixing incorrect CPU/memory efficiency numbers. (#93)
  • Atomic, locked ~/.ssh/config edits — host-config writes are file-locked and atomic, avoiding corruption when multiple windows edit hosts. (#94)
  • Remote VS Code server OOM on Delta — the server now installs to node-local disk (/tmp) instead of $HOME, and the job memory floor is raised to 4 GB, fixing 2 GB job-cgroup OOM crashes. (#99)

[0.0.4] - 2026-06-30

Changed

  • One persistent SSH connection per host — every remote command (SLURM queries, linkspan install, sbatch) now rides a single SSH connection established on first use and reused until it drops, then lazily re-established. On Windows (no ControlMaster) this is what makes connection reuse work at all; on macOS/Linux a ControlMaster socket is still layered in so multiple windows share one authentication. (#66)
  • Session statuses consolidated and reordered — hitting the wall-time limit is now a restartable stopped (was failed), and a dropped link is a self-recovering unreachable state (replacing disconnected). The status set is ordered by lifecycle and the session-card icons/labels were refreshed. (#62)
  • Time-ordered session ids — session ids are now UUIDv7, so the sidebar keeps a stable order across relaunches and a restarted session no longer jumps to the top. (#65)
  • Higher resource floors — the minimum session memory is now 2 GB (1 GB could OOM-kill the VS Code remote server) and the minimum CPU count is now 2. (#57, #59)

Fixed

  • Windows: a fresh auth prompt on every SSH operation against 2FA hosts — Windows OpenSSH has no ControlMaster, so each operation re-authenticated and raised a new Duo prompt. The persistent connection now authenticates once at connect and is reused until it actually drops. (#66)
  • Remote sessions stalling under heavy I/O — opening a large file (or other bursts) no longer stalls or drops the Remote-SSH connection; the Dev Tunnel relay now uses keepalives and the SSH connection has tuned resilience options. (#56)
  • Repeated launches failing with tunnel port exhaustion — each launch now uses a fresh Dev Tunnel, avoiding the PortsPerTunnel (HTTP 429) buildup that made successive launches on a cluster fail. (#58)
  • Wall-time-expired sessions handled reliably — a session that reaches its SLURM --time limit is now ended even when the login node is briefly unreachable for sacct, no longer offers a doomed Connect/Stop, and the queued-time counter no longer flashes -1. (#63)
  • Cross-window connect race — connecting two sessions at once no longer reverts both to "Connect"; session state now merges reliably across windows. (#64)

Removed

  • Legacy migration shims — the old cancelled/cancelling status migration, the legacy ~/.cybershuttle/ssh_hosts Include cleanup, and the unused frp tunnel-provider vestige. (#61)

[0.0.3] - 2026-06-25

Added

  • Edit a session's parameters from its card — change partition, CPU, memory, GPU, allocation, and wall time without recreating the session.
  • Account switcher in the Sessions title bar, plus automatic reuse of a signed-in Microsoft account when creating a session.
  • SSH Hosts view improvements — expandable host rows and a refresh action.
  • SSH auth prompts surface in the Sessions view — password/Duo prompts raised during launch are reflected on the session card.

Changed

  • Session resilience — only an authoritative SLURM terminal state (COMPLETED/FAILED/TIMEOUT/OUT_OF_MEMORY/CANCELLED) now ends a session. A transient login-node or tunnel failure becomes a recoverable unreachable state instead of failed, and the in-process relay is rebuilt automatically on extension restart from the persisted reattach refs, so a live session reconnects without a manual Connect.
  • Background SLURM polling now runs non-interactively (BatchMode), so a dead ControlMaster fails fast instead of raising an unanswerable auth prompt and exhausting local ports.
  • Tunnel reliability — a single client-owned Dev Tunnel per session with a clearer connect/reattach lifecycle.
  • Session-card metadata redesigned as compact chips.
  • Internal refactor — one provider per sidebar view over a shared base, with vscode-free, unit-tested capability modules and lint/type tooling.

Fixed

  • Remote server death on compute nodes without systemd-logind — the server inherited a stale XDG_RUNTIME_DIR=/run/user/<uid> that does not exist on the compute node; the SLURM script now unsets XDG_RUNTIME_DIR/TMPDIR so the server falls back to node-local /tmp.
  • A transient tunnel /health blip no longer tears down a working relay (it self-heals), and a brief login-node outage no longer sticks a session at failed.
  • GPU type and count now pre-populate when editing a GPU session (the gres name's own colon was being mis-split).
  • Corrected the SLURM --gres resource specification format.

Removed

  • The managed ~/.cybershuttle/ssh_hosts host level — SSH hosts are now read directly from ~/.ssh/config and the read-only system config.

[0.0.2] - 2026-06-12

Added

  • SSH Hosts view — add, list, and delete SSH login hosts from the sidebar, mirroring Remote-SSH's "Add New SSH Host" (verbatim ssh command parsing and host validation). Hosts merge from a managed ~/.cybershuttle/ssh_hosts file (Include'd atop ~/.ssh/config), your ~/.ssh/config, and the read-only system /etc/ssh/ssh_config.
  • Stats view — a dedicated sidebar view for session statistics (local-only for now).
  • New Session and Add SSH Host toolbar actions on the sidebar views.
  • Per-session SSH connection resilience — cshost-* blocks now set ServerAliveInterval/ServerAliveCountMax, TCPKeepAlive, ConnectTimeout, and IPQoS cs0, and disable compression, so sessions ride out transient network stalls instead of dropping.

Changed

  • Webview UI rewritten on Preact + @vscode-elements/elements, split into independent per-view esbuild roots (Sessions, SSH Hosts, Stats), with each view rendered from a single pushed state slice.
  • Session-card action buttons (Restart / Start / Cancel / Connect / Switch / Current) made more compact.
  • README demo images now load from the GitHub repository at HEAD instead of relative paths.

Removed

  • docs/media/ demo assets are no longer bundled in the published .vsix — the packaged extension drops from ~5.25 MB to ~0.31 MB.

[0.0.1] - 2026-05-29

Initial release of CS Bridge — remote HPC development from VS Code. Published as cybershuttle.csbridge.

Added

  • Interactive session management for any SSH-accessible host, with support for multiple remote hosts
  • SLURM job submission with configurable partition, CPU, memory, GPU, and wall-time options
  • Dynamic resource picker that queries available partitions, accounts, and limits per host
  • Microsoft Dev Tunnel integration (in-process) for secure tunneling from compute nodes back to the user
  • OS-native SSH with a CyberShuttle-managed ControlMaster pool for efficient multiplexed connections
  • Per-session SSH config generation (~/.cybershuttle/ssh_config), consumed by the system ssh via an Include in ~/.ssh/config
  • Automatic linkspan binary deployment to remote hosts, with cancellation support
  • SLURM session auto-polling (sacct) to track job state transitions
  • SSH password/passphrase prompt handling via an SSH_ASKPASS bridge
  • Session persistence via file-based storage, with cross-window reload resilience
  • Status bar countdown and progress toasts for active sessions
  • esbuild-based build producing a single bundled, minified out/extension.js (tsc used for type-checking only)