Add mine-when-idle, default banlist, and console parsing improvements

Mine-when-idle:
- Auto-start/stop mining based on system idle time detection
- Platform::getSystemIdleSeconds() via XScreenSaver (Linux) / GetLastInputInfo (Win)
- Settings: mine_when_idle toggle + configurable delay (30s–10m)
- Settings page UI with checkbox and delay combo

Console tab:
- Shell-like argument parsing with quote and JSON bracket support
- Pass JSON objects/arrays directly as RPC params
- Fix selection indices when lines are evicted from buffer

Connection & status bar:
- Reduce RPC connect timeout to 1s for localhost fast-fail
- Fast retry timer on daemon startup and external daemon detection
- Show pool mining hashrate in status bar; sidebar badge reflects pool state

UI polish:
- Add logo to About card in settings; expose logo dimensions on App
- Header title offset-y support; adjust content-area margins
- Fix banned peers row cursor position (rawRowPosB.x)

Branding:
- Update copyright to "DragonX Developers" in RC and About section
- Replace logo/icon assets with updated versions

Misc:
- setup.sh: checkout dragonx branch before pulling
- Remove stale prebuilt-binaries/xmrig/.gitkeep

res/themes/ui.toml

@@ -779,6 +779,8 @@ pool-url-input = { width = 300.0, height = 28.0 }
 pool-worker-input = { width = 200.0, height = 28.0 }
 log-panel-height = { size = 120.0 }
 log-panel-min = { size = 60.0 }
+idle-row-height = { size = 28.0 }
+idle-combo-width = { size = 64.0 }
 
 [tabs.peers]
 refresh-button = { size = 110.0 }
@@ -1249,8 +1251,8 @@ inset-shadow-fade-ratio = { size = 5.0 }
 [components.content-area]
 padding-x = 0.0
 padding-y = 0.0
-margin-top = { size = 4.0 }
-margin-bottom = { size = -40.0 }
+margin-top = { size = 6.0 }
+margin-bottom = { size = -39.0 }
 edge-fade-zone = { size = 0.0 }
 
 [components.content-area.window]
@@ -1262,10 +1264,10 @@ page-fade-speed = { size = 8.0 }
 collapse-hysteresis = { size = 60.0 }
 header-icon = { icon-dark = "logos/logo_ObsidianDragon_dark.png", icon-light = "logos/logo_ObsidianDragon_light.png" }
 coin-icon = { icon = "logos/logo_dragonx_128.png" }
-header-title = { font = "subtitle1", size = 14.0, pad-x = 16.0, pad-y = 12.0, logo-gap = 8.0, opacity = 0.7 }
+header-title = { font = "subtitle1", size = 14.0, pad-x = 22.0, pad-y = 6.0, logo-gap = 4.0, opacity = 0.7, offset-y = 4.0 }
 
 [components.main-window.window]
-padding = [12, 38]
+padding = [12, 36]
 
 [components.shutdown]
 content-height = { height = 120.0 }
@@ -1309,6 +1311,8 @@ rpc-label-width = { size = 85.0 }
 security-combo-width = { size = 120.0 }
 port-input-min-width = { size = 60.0 }
 port-input-width-ratio = { size = 0.4 }
+idle-combo-width = { size = 64.0 }
+about-logo-size = { size = 64.0 }
 
 [components.main-layout]
 app-bar-height = { size = 64.0 }