docs(tasks): brief the api server decomposition

The line-count cap is nearly spent (11314 of 11363), but counting lines
misreads the problem. Three call sites outside the HTTP layer reach the
business logic by doing JyotishAPIHandler.__new__ on an uninitialised
handler — consultation_workflow_service twice, which is what MCP calls,
plus the golden capture and the offline accuracy report. The declared
"shared boundary" module imports back into the monolith, so the
dependency arrow points the wrong way and new logic has nowhere to land
except that class.

Four phases: remove the __new__ backdoor, extract the remaining methods
over 150 lines, replace the 72-branch elif dispatch with a table, then
re-freeze the baseline with a 50-line allowance instead of 300. Pure
relocation; the 3841-line security suite is the safety net and none of
its assertions may change. Serial after the qizheng brief, which owns
the file until it merges.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JUei7K13cYxLHE3Axe4A45

docs/tasks/README.md

@@ -224,6 +224,7 @@
 | `TASK-qizheng-native-chart-20260915.md` | `PROGRESS-qizheng-native-chart-20260915.md` | **后端单（独占 `scripts/jyotish_api_server.py`）**：vendored `stem-branch` 0.8.0（Apache-2.0）归档 + API 镜像 Node runtime + 七政适配器（计都派别与宿度坐标系参数化、boundary 按实测重写）+ 三个只读端点 `/api/qizheng`、`/api/western`、`/api/ephemeris_events`。实证三条：四柱时柱按 UTC 算（BUG-700，本轮不修不调用）、`ketuMode` 写死未暴露（BUG-701）、boundary 把空神煞与未闭合庙旺说成已生成（BUG-702）。BUG 段 700–703 | 待领取 | — |
 | `TASK-chart-page-20260915.md` | `PROGRESS-chart-page-20260915.md` | **前端单（独占 `app-sidebar.tsx`，同时加星盘与星历两个入口）**：P0 只读星盘页，五个 Tab（星盘 / 基础信息 / 大运 / 西洋盘 / 七政四余），中宫排盘参数卡，三套坐标系各自标注且禁止互相换算。不扣点不调模型不出 spinner；不碰 `page.tsx`（1951/2000）；**不搬 `vedic-chart-svg.tsx`**（rectification-board 也在用）。BUG 段 704–706 | 待领取 | — |
 | `TASK-ephemeris-page-20260915.md` | `PROGRESS-ephemeris-page-20260915.md` | **前端单**：P1 星历页，今日五要素 + 当日行运（相对本命宫位）+ 未来九十天换座与停滞，底部「带这天去提问」出口。页面不得出现任何运势判断。含实证缺陷：panchanga 写死 Lahiri 与账户 Raman 分裂（BUG-707，只标注不修）。侧边栏入口由 chart-page 单交付。BUG 段 707–709 | 待领取 | — |
+| `TASK-api-server-decomposition-20260916.md` | `PROGRESS-api-server-decomposition-20260916.md` | **重构单（串行在 qizheng 单之后）**：把业务逻辑搬出 `JyotishAPIHandler`。核心不是行数，是全仓 3 处靠 `JyotishAPIHandler.__new__` 伪造空壳 handler 借方法（`consultation_workflow_service` ×2、`capture_report_blocked_repairs_golden`、`local_accuracy_report`，MCP 也走这条），依赖方向反了、handler 没有 `headers`/`wfile` 随时可炸。四阶段：拆 `__new__` 后门 → 抽 ≥150 行业务方法 → `do_POST`/`do_GET` 改路由表 → 重新冻结行数 baseline（余量 300→50）。纯搬运不改行为，`test_api_server_security.py` 3841 行断言一条不许改。预计 11,314 → 约 9,230 行。BUG 段 710+ | 待领取 | — |
 
 ## 命名与归档