feat(ECR-007): Wyckoff Live Structure with Confirmed/Live isolation

Add live.py lifecycle and event candidates; assemble confirmed vs live
in engine; Summary partition; execution_signal source=confirmed only.
Keep strategies untouched; do not lower Confirmed thresholds for Live.

Co-authored-by: Cursor <cursoragent@cursor.com>

docs/notes/WYCKOFF-MULTI-CYCLE-001.md

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+# WYCKOFF-MULTI-CYCLE-001
+
+**Status:** FROZEN  
+**Scope:** Wyckoff Cycle Detection Layer  
+
+## No Change
+
+- `chan.py` / 笔 / 段 / 中枢
+- `strategies/`
+- `/chan_tv`
+
+## Only Change
+
+- wyckoff range detection
+- wyckoff engine payload
+- API localization
+- chart rendering
+- tests
+
+## Frozen Rules
+
+1. 每个 TF 最大 8 个周期
+2. `cycles[0]` 永远为 ACTIVE；`cycles[1:]` 为 HISTORICAL
+3. **禁止**用 `cycles[-1]` 判断 active；唯一来源：`active_cycle = cycles[0]`
+4. 周期不可重叠；按时间倒序（近 → 远）
+5. 顶层字段只镜像 `cycles[0]`
+6. 历史 cycle 只用于展示/分析，不参与当前交易决策
+7. 多 TF 只同步 active cycle（`prefer_start_time` ← 主 TF `cycles[0]`）
+8. 每个 cycle 必须可追溯：`period` / `status` / `role` / `confidence`
+9. 嵌套箱：`overlap_ratio < 0.2` 才可并存；否则丢弃
+10. 验收重点：历史周期稳定复现 + active 不漂移
+
+## Layer Duties
+
+```
+range.py
+  _detect_in_window() → TradingRange   # 仅起止、高低、结构分
+  detect_trading_ranges() → list[TR]   # 倒序扫 + 过滤 + mask
+
+engine.py
+  phases / events / VP / confidence aggregation → cycles[]
+```
+
+## Filter Order（不可改）
+
+```
+candidate window
+  → detect range
+  → quality filter
+  → trend contamination filter
+  → overlap filter (<0.2)
+  → accept cycle
+  → mask
+```
+
+禁止先 mask 再判断质量。
+
+## Display / Summary (2026-08-06)
+
+- 图面阶段标记：`{TF} C{id} Phase {X}`；事件：`{TF} C{id} {Event}`
+- Cycle Summary 面板：消费 `cycles[0]`，写入 `window.wyckoffCycleSummary`
+- 检测算法本轮不改；质量阈值 / 历史层折叠为后续项