Add launch-options-manager

[kapuchai]

Launch Options Manager

Repository: https://github.com/kapuchai/launch-options-manager (submodule pinned at v1.0.0)

A full launch-options manager for desktop Steam on Linux:

• Structured per-game editor: launch options parsed into env vars / wrappers / game arguments, each with an on/off toggle (disabled args are stored by the plugin, not written to Steam), drag-reorder, per-argument notes, undo/redo, and conflict warnings for known-bad combinations
• Preset catalog: 70+ curated Linux/Proton options with detailed explanations, flagged when inapplicable (missing binary, Proton-only on native games, GPU vendor mismatch)
• ProtonDB integration: per-game community launch options grouped by popularity with reporter comments, compatibility tier, one-click apply with undo
• Profiles & bulk apply to collections or the whole library; JSON export/import; full-store backup/restore via file dialogs
• Applies live via SteamClient.Apps.SetAppLaunchOptions with write-back verification; user data stored in XDG data dir (survives plugin updates); Lua backend, no external dependencies

Technical notes for review:

• Backend: LuaJIT only (backendType: lua), uses bundled modules (fs/utils/http/json/logger). Network access: protondb.com only (reports + summaries), read-only
• Frontend: built with @steambrew/ttc, prebuilt .millennium/Dist checked in
• Tested on Millennium 3.2.1-beta / CachyOS

🤖 This plugin was built end-to-end by Claude Fable 5 (Anthropic's frontier model) working in Claude Code — research, implementation, and 8 rounds of multi-agent adversarial code review with 60+ verified findings fixed before release. Human direction and live testing by @kapuchai.

🤖 Generated with Claude Code

[kapuchai]

Updated the submodule pin to v1.0.1 — fixes the user-data directory on Windows (%APPDATA% instead of the Linux XDG path) and Windows PATH probing.