docs(quick-260425-w2i): 区域转移概率统计 — 计划与总结

.planning/quick/260425-w2i-5-10/260425-w2i-PLAN.md

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+---
+description: "在控制台页面新增区域转移概率统计：1-49分5区，统计特码所在区下一期特码出现在各区的概率"
+status: in-progress
+---
+# Quick Task 260425-w2i: 区域转移概率统计
+
+## Plan
+
+1. **Model** — Add `getZoneTransition($periods)` method to `app\admin\model\History`
+   - Query latest `$periods` periods ordered by openTime ASC
+   - Divide numbers 1-49 into 5 zones: 1-10, 11-20, 21-30, 31-40, 41-49
+   - For each consecutive pair of periods, record (current_zone → next_zone)
+   - Return: `{zones: ['1-10','11-20','21-30','31-40','41-49'], matrix: [[count...]], probabilities: [[prob...]], total_transitions: N}`
+
+2. **Controller** — Add `zoneTransition()` method to `app\admin\controller\History`
+   - Accept `periods` param (default 100, range 10-500)
+   - Add to `$noNeedRight` list
+   - Call model method, return JSON response
+
+3. **Dashboard** — Include `zoneTransition` in `getDashboardData()` response
+
+4. **Frontend JS** — Add zone transition heatmap/table in `public/assets/js/backend/dashboard.js`
+   - Render as a 5×5 matrix table with color-coded cells showing count and percentage
+   - Append below existing heatmap section