v3.0.5-beta.13

nexus-service

• feat(update): download-tier update notification on macOS and Linux
• fix(diagnostics): honest cross-platform health + no update offer where it cannot install
• fix(linux): gate LinuxDesktopWallpaperProvider off non-Linux publishes
• feat(linux): process icons, desktop wallpaper route, steam login users
• feat(linux): SMART health via smartctl, journalctl incidents, NVML on linux
• feat(linux): session-correct spawns, logind resume bounce, update suppression
• feat(linux): disk rates, per-process io, amdgpu sensors, nic extras, autostart route
• revert(devtools): drop the simulated lighting devices
• feat(monitoring): macOS system-wide disk byte rates via IOBlockStorageDriver
• feat(devtools): simulated nexus 2 install + honest lighting scan flag
• docs(panel): correct the v1 layout comment; no client migrates v1 coordinates
• fix(mac): exit the process on every host stop + single finalizer claim
• feat(migration): nexus 2 personalization import (preview + apply) and close-app action
• feat(onboarding): lighting device-selection gate + mac reset hardening
• feat(sensors): mac GPU utilization, SSD temperature, atomic CPU load
• feat(migration): nexus 2 welcome detection + routes
• feat(sensors): surface CPU/GPU die temperatures on macOS
• feat(lighting): default Static mode to the Linear gradient
• refactor(panel): drop the superseded backgroundEnabled field

nexus-web

• feat(update): show a Download action for updates on macOS and Linux
• refactor(lighting): make the card menu rows name their action, not their state
• fix(diagnostics): reword the unsupported-section note to be hardware-accurate
• feat(diagnostics): hide platform-dead tabs, gate Windows-only actions
• refactor(lighting): collapse the device card to one action affordance
• feat(lighting): name device card state and move its toggles into a menu
• feat(linux): enable startup toggle and Linux incident sources
• feat(onboarding): lead the nexus 2 gate with the detected version
• feat(onboarding): make the nexus 2 coexistence actions automatic
• feat(onboarding): trim and restyle the nexus 2 gate
• docs(monitoring): correct the gpu-gate comment for macOS utilization
• feat(onboarding): run the nexus 2 gate before lighting device selection
• fix(onboarding): keep the nexus 2 shutdown offer out of the lighting gate
• refactor(dashboard): consolidate Nexus 2.0 import into grouped checkboxes
• feat(onboarding): back step on the nexus 2 gate + bounded write pause
• feat(dashboard): Nexus 2 import + checkbox action area on the welcome screen
• feat(onboarding): lighting device-selection screen after welcome
• feat(dashboard): nexus 2 returning-user welcome screen
• feat(lighting): default Static mode to the Linear gradient
• refactor(panel): drop the superseded backgroundEnabled field

Full Changelog: v3.0.5-beta.12...v3.0.5-beta.13