Windler 0.2.2

• 控制台：默认主题色改为官网设计系统的琥珀 #F0A35E（原蓝紫 #7C6CF2）；暗色背景固定为中性灰 #202020，不再随主题色偏色；暗色主色直接用 agent 的主题色；呼吸光团改为主题色的高饱和发光体。运行基座与灵魂桥生成的初始身份同步改用该默认色。
• Console: the default theme color is now the website design system's amber #F0A35E (was blue-violet #7C6CF2); the dark background is a fixed neutral gray #202020 that no longer shifts with the theme color; the dark primary color is the agent's theme color itself; the breathing orb is now a saturated, glowing rendering of that color. The runtime and the soul bridge generate seed identities with the same default.
• 品牌标志统一为琥珀光团：App 启动图标（含 Android 8+ 自适应图标，由 console/tool/gen-launcher-icon.py 生成）、官网字标与 favicon 都换成与控制台首页同一颗球。
• The brand mark is now the amber orb everywhere: the app launcher icon (including the Android 8+ adaptive icon, generated by console/tool/gen-launcher-icon.py), the website wordmark and the favicon all use the same orb as the console home page.
• App 改用正式签名（Release 工作流从仓库 Secrets 读取密钥库）。从 debug 签名的 0.2.1 升级需先卸载再安装；Termux 里的运行基座与数据不受影响。
• The app is now signed with a release key (the release workflow reads the keystore from repository secrets). Upgrading from the debug-signed 0.2.1 requires uninstalling first; the runtime and data inside Termux are unaffected.

Full Changelog: v0.2.1...v0.2.2