feat: 全面清理类型错误 — tsc 零错误，any 标注全部消除

- 修复所有 33 个原始 tsc 编译错误（ink JSX 声明、类型不匹配、null check 等）
- 清理 176 处 `: any` 类型标注，全部替换为具体推断类型
- 修复清理过程中引入的 41 个回归错误
- 最终结果：0 tsc 错误，0 个非注释 any 标注
- Build 验证通过（25.75MB bundle）

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/keybindings/template.ts

@@ -25,7 +25,7 @@ function filterReservedShortcuts(blocks: KeybindingBlock[]): KeybindingBlock[] {
       const filteredBindings: Record<string, string | null> = {}
       for (const [key, action] of Object.entries(block.bindings)) {
         if (!reservedKeys.has(normalizeKeyForComparison(key))) {
-          filteredBindings[key] = action
+          filteredBindings[key] = action as string | null
         }
       }
       return { context: block.context, bindings: filteredBindings }