What changed.

All notable changes to LaunchLayer are documented here.

Format follows Keep a Changelog, and this project uses Semantic Versioning.

Docs index · README · CLI · TUI · Architecture · Third-party · Release · Changelog

Unreleased

Added

• Pages code examples use theme-aware shell syntax highlighting without changing copied commands.

0.14.0 - 2026-09-01

Added

• Add managed OptiScaler and OpenComposite layers, hybrid-GPU selection, and native Gamescope ReShade controls.

Security

• Reject unsafe injector destinations, tracking identifiers, oversized downloads or archives, and archive traversal or link entries before modifying game files.

Fixed

• Restore tracked injections after signals, early launch failures, and watchdog recovery from force-quit sessions.
• Roll back multi-file tool installs as a unit and restore tracked INI edits.
• Clean global ValvePlug tracking, drive typed choices from shared metadata, and skip unsupported Gamescope ReShade flags.

0.13.2 - 2026-09-01

Changed

• Limit automatic ProtonDB settings to recent, corroborated reports with strict key and value validation.
• Mark generated recommendations so later runs can reconcile stale advice without overwriting user settings.

Fixed

• Preserve complete post-%command% game arguments while excluding wrapper arguments.
• Respect effective native/FORCE_PROTON selection and keep standard Valve Proton on Steam's default compatibility path instead of writing stale overrides.
• Recognize Arch-derived profiles and installed Steam Proton version labels during report ranking.
• Avoid redundant per-game GAMEMODE=1 overrides.

0.13.1 - 2026-09-01

Changed

• Update compatible Hub development dependencies while retaining the supported TypeScript toolchain.
• Report per-game progress during bulk Hub publish and update operations without corrupting JSON output.

Fixed

• Canonicalize client fingerprint hashes in the same key order as Convex validation.
• Exclude Steam runtimes and tools identified by toolmanifest.vdf from game workflows and direct Hub operations.
• Keep the primary player-guide content visible when JavaScript enhancement succeeds.

0.13.0 - 2026-09-01

Added

• Add a dependency-free, read-only MCP stdio server with game, configuration, path, cache, launch-statistics, environment, recommendation, diagnostic, and validation tools.
• Add MCP 2026 discovery support, cancellation, redacted privacy mode, and a pinned Inspector conformance target.
• Add a canonical configuration-key metadata registry shared by validation, summaries, the TUI, and Hub trust checks.
• Add accessible TUI status views, text labels, reduced-motion behavior, and deterministic visual evidence.
• Add a responsive GitHub Pages guide for players, live release and CI status, and an interactive repository-backed architecture diagram.

Changed

• Require Bash 4.3 and verify the minimum runtime in CI.
• Lazy-load command modules for substantially faster version and help output.
• Bound Hub HTTP connection time, request time, and response size.
• Cache Steam manifests and bounded engine indexes to reduce repeated filesystem scans.
• Update the Hub dependency set and require Node 22.13 or newer.
• Make ProtonDB recommendation ranking deterministic across report and Proton version ordering.
• Make version bumps atomic and portable across GNU and BSD systems.

Fixed

• Generate direct systemd maintenance and backup commands so failures reach the journal and unit status.
• Preserve paths containing whitespace throughout Steam discovery and preflight checks.
• Serialize config, Hub apply, completion, launch-log, and backup writes to prevent lost concurrent updates.
• Keep rapid Hub applies and same-second backups under unique recovery names.
• Validate MCP request envelopes and IDs before they reach shared worker state.
• Scope temporary-file cleanup to its owning operation and keep directory migration out of module loading.

0.12.0 - 2026-08-11

Added

• TUI access to ProtonDB suggestions, per-game runtime status, hub config history, historical config application, restore merge paths, bulk INCLUDE filtering/preview, and global launch statistics

Security

• Harden config parsing, INCLUDE containment, backup archives, fetched artifact checksum verification, hub client identity, retention limits, and dependency/action pin enforcement
• Require explicitly configured trusted ingress identity and HMAC protection for hub rate limiting
• Patch all known npm advisories in the hub dependency graph, including js-yaml, brace-expansion, PostCSS, Nano ID, and ws

Fixed

• Main-menu Doctor shortcut (Doctor ⚠N) actually runs doctor (case was Doctor:*)
• Preserve launch tuning cleanup, standalone module loading, read-only state-cache behavior, and hub cleanup rescheduling

Changed

• Bound hub candidate queries, prioritize recent recommendations, and expire stale client data
• Strengthen CI quality, secret, dependency-pin, and action-pin gates
• Update compatible hub dependencies while retaining exact version pins

0.11.0 - 2026-07-14

Added

• CachyOS, Arch, and Bazzite launch options for DLSS swapping, shader caches, Gamescope, vkBasalt, capture tools, Wine injection, specialty runtimes, and VR workflows.
• A shared download and injection path stores third-party tools in the XDG cache with notices instead of vendoring binaries.
• The TUI exposes every supported launch key through quick toggles or typed advanced controls.
• Optional playtime logging, crash hints, and launch-exit restoration for modified files.

Changed

• Detected defaults enable safe platform-specific tuning while dry-run output shows the selected environment.
• Hub publish and apply strip remote-execution and local-mutation keys from shared configurations.
• Overlapping wrappers and aliases are validated so each behavior has one configuration path.

Fixed

• Nested Gamescope sessions avoid inherited LD_PRELOAD and skip redundant nesting.
• Special K, Flawless Widescreen, winetricks, and related injectors preserve existing files and use valid source paths.

0.10.0 - 2026-07-14

Added

• Community hub config history (--hub-history, apply historical revisions)
• ProtonDB-based --suggest-config rankings
• Release runbook (docs/release_runbook.md) with make bump-version / make check-version

Security

• Fail-closed hub publish/delete unless HUB_PUBLISH_TOKEN is set (or HUB_ALLOW_OPEN_PUBLISH=1 for local/dev)
• Reject/strip remote-exec keys (PRE_LAUNCH_CMD, wrappers, OVERRIDE_PROTON, VRAM-hog controls) on hub publish/apply
• Harden INCLUDE= path containment and tar import member checks
• Rate-limit privileged hub write routes and stop keying rate limits on client fingerprint alone
• Tighten hub prefs token hygiene (chmod 600, never echo token values)

Changed

• CI path filters cover docs/changelog. Shell Bats and hub lint/test run as matrices.

0.9.0 - 2026-06-12

Added

• Modular lib/ layout, TUI, backups, profiles, and broad platform detection
• LaunchLayer Hub client + Convex backend for sharing per-game configs