fix(chart): skip unused synastry overview and doomed report subprocesses

Synastry charts now skip the unused external overview and run together. Reports skip PyJHora subprocesses when that library is missing, and a full heavy-compute slot logs which paths hold it. Splitting quotas stays a simulation. Gate, growth, and report pytest passed, as did the frontend route tests, tsc, lint, and the A/B script. Co-Authored-By: Grok (agent loop) Co-authored-by: Cursor <cursoragent@cursor.com>
2026-10-15 08:02:39 +08:00
parent 9274491681
commit 336286e428
19 changed files with 1126 additions and 37 deletions
@@ -1,5 +1,9 @@
 # 印度占星 Skill 更新日志

+## 2026-10-15 — 合盘更快（待合入 staging）
+
+- 合盘排两张盘时关掉用不上的外部概览，两张盘一起排。个人报告在没装参照引擎时不再为注定失败的回放反复起进程。轻重任务要不要分开限流，这一单只给了模拟表，还没改规则。
+
 ## 2026-10-14 — 生产可以在测试环境后面只多了文档时照常发布（待合入 staging）

 - 生产发布用最近一次测过的代码版本。测试环境后面如果只多了文档，不再挡住发布。生产环境拒绝测试用验证码，网址末尾多一个斜杠也拒绝。迁移演练在主机上不再依赖本机 Node；演练库删不掉会明确失败。只多了文档时，回退不再被拒绝。Skill 版本不变（BUG-1348、BUG-1349）。
@@ -17990,6 +17990,36 @@
 - 复发自：无。
 - 修复版本：分支 `codex/api-disk-cache-retention-20261013`，尚未合入 staging。

+## BUG-1333 | 合盘排盘漏关外部概览，而且两张盘排队算
+
+- 状态：fixed-pending-verify
+- 首次发现 / 最近更新：2026-10-13 / 2026-10-15
+- 来源：issue #64。任务书 `docs/tasks/TASK-api-chart-subprocess-gate-20261013.md` T1、T3、T4。
+- 现象：合盘每次要排两张盘，都没关掉用不上的外部概览。每张盘多起两个后台进程，而且两张盘一张一张排。名额占满时，日志里看不出是谁占着。
+- 触发条件：打开合盘。排盘接口本身默认仍走完整链，给报告和外部调用留着。
+- 根因：合盘这条路由没跟上「只读盘面就关掉外部概览」的约定，也没有合同测试拦住。名额按路径一刀切，不带 skip 的排盘默认不占名额。
+- 修复：合盘两次排盘都带上关闭外部概览，两张盘同时排；婚恋分支的两张分盘也同时排。前端里凡是发给排盘接口的请求体，都要带这个开关，由源码合同守着。另加一个默认关闭的开关：打开后，不带 skip 的同步排盘才占一个重计算名额。名额占满时记一行日志，只写被拒的路径和当前占用者的路径、已占秒数，不写请求正文。
+- 验证：`frontend/tests/synastry-chart-skip.test.ts`、`frontend/tests/chart-request-skip-contract.test.ts`、`tests/test_api_chart_subprocess_gate.py`、`tests/test_api_heavy_compute_gate.py`。合盘耗时见 `docs/testing/api-chart-subprocess-gate-ab-20261013.md`。
+- 防复发：源码合同要求 `frontend/src/app/api` 和 `frontend/src/lib` 里发往 `/api/chart` 的请求体带 `skip_vedastro_main_entry_overview: true`。`/api/chart` 仍不在重计算路径名单里。
+- 相关记录：BUG-161、BUG-715、BUG-717、BUG-1302。
+- 复发自：无。
+- 修复版本：分支 `codex/api-chart-subprocess-gate-20261013`。编号是任务书预留的空号，夹在 BUG-1332 和 BUG-1335 之间。
+
+## BUG-1334 | 个人报告在没有参照引擎时仍为每次报告启动子进程
+
+- 状态：fixed-pending-verify
+- 首次发现 / 最近更新：2026-10-13 / 2026-10-15
+- 来源：issue #64。任务书 T2。
+- 现象：每份个人报告会起大约 10 个后台进程。其中参照引擎没装时，年度回放注定失败，但仍要付启动开销。另一段静态校验和用户的盘无关，每份报告都重跑。
+- 触发条件：生成个人长报告，且这台机器没有安装 PyJHora。装了参照引擎的开发机上，隔离用的子进程仍然要留着。
+- 根因：子进程是为了把参照引擎隔离开，这是对的；父进程却没有先问「这台机器根本没装」。静态校验文件被挂在每份报告上，没有按文件变化复用。
+- 修复：父进程先看一次能不能导入参照引擎，不能就不起子进程，返回和「子进程在没装时」相同的结果。解释器查找和静态校验各在进程内记一次；校验文件变了会重算。不缓存任何出生资料。装了参照引擎时仍走子进程。
+- 验证：`tests/test_api_chart_subprocess_gate.py` 对照 `tests/fixtures/api-chart-subprocess-gate/`。生产上的收益大约是每份报告 0.5 到 0.9 秒、少掉那几个注定失败的进程，不是排查时在装了参照引擎的机器上看到的 5 秒。本机没有 PyJHora，实测见 `docs/testing/api-chart-subprocess-gate-ab-20261013.md`。
+- 防复发：无参照引擎时测试断言不会调用 `subprocess.run`，返回值与固定样本一致。
+- 相关记录：BUG-721、BUG-1265、BUG-1333。
+- 复发自：无。
+- 修复版本：分支 `codex/api-chart-subprocess-gate-20261013`。
+
 ## BUG-1335 | 个人长报告的中文出稿和溯源哈希重复劳动

 - 状态：investigating
@@ -36042,6 +36072,36 @@
 - 复发自：无。
 - 修复版本：分支 `codex/api-disk-cache-retention-20261013`，尚未合入 staging。

+## BUG-1333 | 合盘排盘漏关外部概览，而且两张盘排队算
+
+- 状态：fixed-pending-verify
+- 首次发现 / 最近更新：2026-10-13 / 2026-10-15
+- 来源：issue #64。任务书 `docs/tasks/TASK-api-chart-subprocess-gate-20261013.md` T1、T3、T4。
+- 现象：合盘每次要排两张盘，都没关掉用不上的外部概览。每张盘多起两个后台进程，而且两张盘一张一张排。名额占满时，日志里看不出是谁占着。
+- 触发条件：打开合盘。排盘接口本身默认仍走完整链，给报告和外部调用留着。
+- 根因：合盘这条路由没跟上「只读盘面就关掉外部概览」的约定，也没有合同测试拦住。名额按路径一刀切，不带 skip 的排盘默认不占名额。
+- 修复：合盘两次排盘都带上关闭外部概览，两张盘同时排；婚恋分支的两张分盘也同时排。前端里凡是发给排盘接口的请求体，都要带这个开关，由源码合同守着。另加一个默认关闭的开关：打开后，不带 skip 的同步排盘才占一个重计算名额。名额占满时记一行日志，只写被拒的路径和当前占用者的路径、已占秒数，不写请求正文。
+- 验证：`frontend/tests/synastry-chart-skip.test.ts`、`frontend/tests/chart-request-skip-contract.test.ts`、`tests/test_api_chart_subprocess_gate.py`、`tests/test_api_heavy_compute_gate.py`。合盘耗时见 `docs/testing/api-chart-subprocess-gate-ab-20261013.md`。
+- 防复发：源码合同要求 `frontend/src/app/api` 和 `frontend/src/lib` 里发往 `/api/chart` 的请求体带 `skip_vedastro_main_entry_overview: true`。`/api/chart` 仍不在重计算路径名单里。
+- 相关记录：BUG-161、BUG-715、BUG-717、BUG-1302。
+- 复发自：无。
+- 修复版本：分支 `codex/api-chart-subprocess-gate-20261013`。编号是任务书预留的空号，夹在 BUG-1332 和 BUG-1335 之间。
+
+## BUG-1334 | 个人报告在没有参照引擎时仍为每次报告启动子进程
+
+- 状态：fixed-pending-verify
+- 首次发现 / 最近更新：2026-10-13 / 2026-10-15
+- 来源：issue #64。任务书 T2。
+- 现象：每份个人报告会起大约 10 个后台进程。其中参照引擎没装时，年度回放注定失败，但仍要付启动开销。另一段静态校验和用户的盘无关，每份报告都重跑。
+- 触发条件：生成个人长报告，且这台机器没有安装 PyJHora。装了参照引擎的开发机上，隔离用的子进程仍然要留着。
+- 根因：子进程是为了把参照引擎隔离开，这是对的；父进程却没有先问「这台机器根本没装」。静态校验文件被挂在每份报告上，没有按文件变化复用。
+- 修复：父进程先看一次能不能导入参照引擎，不能就不起子进程，返回和「子进程在没装时」相同的结果。解释器查找和静态校验各在进程内记一次；校验文件变了会重算。不缓存任何出生资料。装了参照引擎时仍走子进程。
+- 验证：`tests/test_api_chart_subprocess_gate.py` 对照 `tests/fixtures/api-chart-subprocess-gate/`。生产上的收益大约是每份报告 0.5 到 0.9 秒、少掉那几个注定失败的进程，不是排查时在装了参照引擎的机器上看到的 5 秒。本机没有 PyJHora，实测见 `docs/testing/api-chart-subprocess-gate-ab-20261013.md`。
+- 防复发：无参照引擎时测试断言不会调用 `subprocess.run`，返回值与固定样本一致。
+- 相关记录：BUG-721、BUG-1265、BUG-1333。
+- 复发自：无。
+- 修复版本：分支 `codex/api-chart-subprocess-gate-20261013`。
+
 ## BUG-1335 | 个人长报告的中文出稿和溯源哈希重复劳动

 - 状态：investigating
@@ -0,0 +1,74 @@
+# PROGRESS · 合盘排盘与报告多余子进程（2026-10-15）
+
+- 分支：`codex/api-chart-subprocess-gate-20261013`
+- 实际基线：`origin/staging` `9274491681f6fcacbc87e3797441d2c5221de874`（任务书写的 `77057a819` 更早）
+- `scripts/jyotish_api_server.py`：开工 10944 行，做完 10940 行
+- BUG-1333、BUG-1334。`docs/BUG_HISTORY.md` 后半是同一份历史的副本，两处都补上了。
+
+## 做了什么
+
+1. 合盘两次排盘都带 `skip_vedastro_main_entry_overview: true`，不改 `synastryBirthPayload`。两张盘和婚恋分支的两张九分盘都改成同时发出。任一失败仍走原来的 `catch`。
+2. 前端 `app/api` 和 `lib` 里发往 `/api/chart` 的请求体必须带这个开关。白名单是空的。
+3. 父进程先看一次能不能导入 PyJHora。不能就不起年度回放和 Tajika 的子进程，返回和「子进程在没装时」相同的结果。样本在 `tests/fixtures/api-chart-subprocess-gate/`，来自本机真实子进程（当时 `find_spec("jhora")` 为 `None`）。装了之后仍走子进程。
+4. 解释器查找（含「没找到」）和静态 oracle 校验在进程内各记一次。校验按文件路径、mtime、大小作键。不缓存出生资料。
+5. 开关 `JYOTISH_GATE_CHART_OVERVIEW` 默认关。只有把它设为 `1` 时，不带 skip、也不是异步排队的 `/api/chart` 才占一个重计算名额。`/api/chart` 没有加进 `HEAVY_COMPUTE_PATHS`。预热咨询不占名额的判断挪进了闸门模块。
+6. 名额占满时打一行日志：被拒路径、当前占用者路径、已占秒数。不写请求正文。
+
+## 自测
+
+| 检查 | 命令 | 结果 |
+| --- | --- | --- |
+| 闸门、增长护栏、本单新测试 | `.venv\Scripts\python.exe -m pytest tests/test_api_chart_subprocess_gate.py tests/test_api_heavy_compute_gate.py tests/test_api_server_growth_contract.py -q` | 21 passed，退出码 0 |
+| 报告三份既有测试 | 同上解释器 `-m pytest tests/test_report_reader_main.py tests/test_report_longform_parity.py tests/test_report_density_facts.py -q` | 27 passed，退出码 0 |
+| 前端本单与相关单文件 | 在 `frontend` 下 `node node_modules/tsx/dist/cli.mjs --test tests/synastry-chart-skip.test.ts tests/chart-request-skip-contract.test.ts tests/chart-view-route.test.ts tests/ephemeris-route.test.ts` | 22 pass，0 fail |
+| 类型检查 | `frontend\node_modules\.bin\tsc --noEmit -p frontend` | 退出码 0 |
+| lint | 在 `frontend` 下 `npm run lint` | 退出码 0，0 error，123 条原有 warning |
+| A/B | `.venv\Scripts\python.exe scripts\research\api_chart_subprocess_ab.py` | 退出码 0。数字见下 |
+
+`grep` 这三个名字在 `tests/` 里只命中本单新测试：`annual_pyjhora_replay`、`_oracle_progress_snapshot`、`_resolve_external_pyjhora_python`。
+
+## A/B 数字
+
+合盘：串行不带 skip 中位 8.0596 秒、2 次 `subprocess.run`；并发带 skip 中位 0.0166 秒、0 次。盘面摘要逐字节一致。耗时约为对照的 0.2%。
+
+报告：强制仍起子进程中位 16.5322 秒、7 次；短路后 15.3235 秒、1 次。去掉易变字段后逐字节一致。少掉的 6 次是年度回放和 Tajika。
+
+名额模拟（种子 64，一分钟，未改规则）：
+
+| 方案 | 咨询被拒 | 报告被拒 | 校正被拒 | 最高并发 | 碰到不得加池的那条 |
+| --- | --- | --- | --- | --- | --- |
+| O1 现状 | 40% | 0% | 17% | 2 | 否 |
+| O2 咨询单独小池 | 0% | 0% | 17% | 3 | 是 |
+| O3 咨询最多再等 1.5 秒 | 30% | 0% | 33% | 2 | 否 |
+| O4 重任务最多占 1 个 | 0% | 0% | 67% | 2 | 否 |
+
+全文在 `docs/testing/api-chart-subprocess-gate-ab-20261013.md`。
+
+## 改既有断言
+
+无。原值 / 新值 / 原因：没有改旧断言。
+
+## 偏离
+
+- `/api/health` 没有加 `heavy_compute` 字段。状态函数 `heavy_compute_status()` 在闸门模块里，接到健康检查会让主文件变长。任务书允许砍掉这一项。
+- 星盘名额开关默认关。打开会让不带 skip 的外部调用可能拿到 429，任务书要求先有 A/B 再提议，本单不打开。
+- O2、O3、O4 没有实现。
+- 报告对照不是 staging 源码另导入，而是本分支把「已安装」强制打开。静态校验缓存两边都在，所以耗时差只反映那 6 个子进程。
+- 合盘子进程是 2 → 0，不是任务书举例的 4 → 0。这台机器两张盘合计只数到 2 次 `subprocess.run`。
+- 没有「装了 PyJHora」的计时。父进程强制当成已安装时，子进程仍会因为没装而失败，这一组用来代表「不短路就要付启动开销」。
+
+## 环境缺口
+
+- 本机 `.venv`：`sys.executable` 是工作树的 `python.exe`；`shutil.which("python3")` 是 Windows 应用商店占位；`python3.14` 没有；`find_spec("jhora")` 是 `None`。
+- Docker 在，没有本地 `jyotisha-api` 镜像，镜像里的解释器路径没有核实。
+- 生产装了 VedAstro、并且开了外网时，不带 skip 的排盘真实耗时本机测不到。
+- 名额被占满后连带拒绝的真实频率，要等日志上了 staging 再看。
+
+## 需拍板
+
+轻重任务要不要分开限流，本单不改。模拟里，让咨询少被拒，校正就会多被拒；给咨询单独开池会让同时在跑的个数超过 2。要改规则需要另立一单。
+
+## 默认值
+
+- `JYOTISH_GATE_CHART_OVERVIEW` 默认关。
+- 合盘 skip 和报告短路没有开关。
@@ -482,7 +482,7 @@
 | `TASK-consult-prep-parallel-fix-20261014.md` | `PROGRESS-consult-prep-parallel-20261013.md` | **#62 第 1 次打回**：两条源码文本检查改认新位置，对照脚本挪进测试目录 | 待验收 | `codex/consult-prep-parallel-20261013` |
 | `TASK-frontend-dead-code-20261013.md` | `PROGRESS-frontend-dead-code-20261013.md` | 前端死代码 17 文件与无调用方接口删除，含未登录重计算接口（BUG-1342） | 待验收 | `codex/frontend-dead-code-20261013` |
 | `TASK-frontend-dead-code-fix-20261014.md` | `PROGRESS-frontend-dead-code-20261013.md` | **#63 第 1 次打回**：类名白名单去掉已删组件留下的条目 | 待验收 | `codex/frontend-dead-code-20261013` |
-| `TASK-api-chart-subprocess-gate-20261013.md` | — | 合盘不带 skip 串行排盘、报告无效子进程、名额轻重混用（只模拟）（BUG-1333～1334，A/B） | 待领取（排队：api-disk-cache-retention + report-reference-perf） | `codex/api-chart-subprocess-gate-20261013` |
+| `TASK-api-chart-subprocess-gate-20261013.md` | `PROGRESS-api-chart-subprocess-gate-20261013.md` | 合盘不带 skip 串行排盘、报告无效子进程、名额轻重混用（只模拟）（BUG-1333～1334，A/B） | 待验收 | `codex/api-chart-subprocess-gate-20261013` |
 | `TASK-answer-effort-ab-20261013.md` | — | 答题步推理强度开关 + A/B（需模型 key） | 待领取（排队：consult-prep-parallel） | `codex/answer-effort-ab-20261013` |
 | `TASK-consult-route-split-20261013.md` | — | consult POST 拆分第一阶段：开流前加载 + 计费结算 | 待领取（排队：consult-prep-parallel、answer-effort-ab） | `codex/consult-route-split-20261013` |
 | `TASK-pl9-render-split-20261013.md` | — | render_pl9_markdown 第一阶段：搬出无依赖内部函数 | 待领取（排队：api-chart-subprocess-gate） | `codex/pl9-render-split-20261013` |
@@ -0,0 +1,53 @@
+{
+  "charts": {
+    "serial_seconds_median": 8.0596,
+    "concurrent_skip_seconds_median": 0.0166,
+    "serial_subprocesses_median": 2,
+    "concurrent_skip_subprocesses_median": 0,
+    "summary_bytes_match": true
+  },
+  "report_forced_subprocess": {
+    "seconds_median": 16.5322,
+    "subprocesses_median": 7
+  },
+  "report_short_circuit": {
+    "seconds_median": 15.3235,
+    "subprocesses_median": 1
+  },
+  "report_bytes_match": true,
+  "schemes": [
+    {
+      "scheme": "O1",
+      "consult_429": "0.40",
+      "report_429": "0.00",
+      "score_429": "0.17",
+      "peak": 2,
+      "touches_bug_717": false
+    },
+    {
+      "scheme": "O2",
+      "consult_429": "0.00",
+      "report_429": "0.00",
+      "score_429": "0.17",
+      "peak": 3,
+      "touches_bug_717": true
+    },
+    {
+      "scheme": "O3",
+      "consult_429": "0.30",
+      "report_429": "0.00",
+      "score_429": "0.33",
+      "peak": 2,
+      "touches_bug_717": false
+    },
+    {
+      "scheme": "O4",
+      "consult_429": "0.00",
+      "report_429": "0.00",
+      "score_429": "0.67",
+      "peak": 2,
+      "touches_bug_717": false
+    }
+  ],
+  "jhora_installed": false
+}
@@ -0,0 +1,40 @@
+# 合盘排盘与报告子进程 A/B（2026-10-15）
+
+Windows 本机，工作树 `.venv` 的 `python.exe`。`importlib.util.find_spec("jhora")` 是 `None`。`python3` 指向 Windows 应用商店占位程序，`python3.14` 不存在。Docker 守护进程在，本机没有 `jyotisha-api` 镜像，所以没有进镜像再探一次。本机没有 VedAstro SDK，外网关闭（`VEDASTRO_ENABLE_NETWORK=0`）。没有「真 SDK」一组。
+
+脚本：`scripts/research/api_chart_subprocess_ab.py`。每组 3 次，取中位数。盘是任务书里的虚构盘（1990-01-01 12:00 与 1992-01-02 12:00，新德里）。星盘缓存 TTL 设为 0。易变字段在比对前丢掉：`generated_at`、`created_at`、`timestamp`、`elapsed_seconds`、`elapsed_ms`、`duration_ms`、`request_id`。原始数字在同目录 `api-chart-subprocess-gate-ab-20261013.json`。
+
+对照不是另一次 `git show` 出 staging 再导入。星盘对照是本分支的 `_compute_chart_sync`：不带 skip、两张盘串行。报告对照是本分支把「参照引擎已安装」强制打开，从而仍会起子进程；静态校验缓存和解释器查找缓存两边都开着。所以报告耗时差只含那 6 个注定失败的回放进程，不含静态校验少跑的那一次。静态校验「连调两次只跑一次」由单测覆盖。
+
+## 合盘两张盘
+
+| | 中位耗时 | 中位 `subprocess.run` 次数 | 盘面摘要 |
+| --- | --- | --- | --- |
+| 对照：不带 skip，串行 | 8.0596 秒 | 2 | — |
+| 本单：带 skip，并发 | 0.0166 秒 | 0 | 与对照逐字节一致 |
+
+0.0166 / 8.0596 ≈ 0.2%，低于「不超过对照 10%」的线。子进程从 2 降到 0。任务书写的「4 → 0」是按每张盘 2 个子进程、两张合计 4 个来估的。这台机器上两张盘合计只数到 2 次 `subprocess.run`。不带 skip 的 8 秒里，大部分是没装 SDK 时子进程空等，不是盘面计算本身。
+
+## 个人长报告（完整数据版，中英，带事实表）
+
+| | 中位耗时 | 中位 `subprocess.run` 次数 | 中英正文与事实表 |
+| --- | --- | --- | --- |
+| 对照：强制仍起回放子进程 | 16.5322 秒 | 7 | — |
+| 本单：没装参照引擎就不起 | 15.3235 秒 | 1 | 去掉易变字段后逐字节一致 |
+
+少 6 次，对应年度回放 3 次和 Tajika 3 次。剩下的 1 次两边都有，短路没有把它去掉。子进程数 1，低于「模拟生产不超过 3」的线。耗时 15.32 秒，不比对照的 16.53 秒差。本机没装 PyJHora，没有再跑「装了参照引擎」的一组；那种环境仍必须走子进程，单测用桩覆盖。
+
+生产上的收益仍按任务书：大约每份报告 0.5 到 0.9 秒，不是装了参照引擎的机器上看到的约 5 秒。
+
+## 名额方案模拟（没改规则）
+
+固定一分钟：2 份报告（每次 13 秒）、20 次咨询（每次 0.2 秒）、6 次校正打分（每次 8 秒）。随机种子 64。并发上限按现状 2。O2、O3、O4 只在脚本里模拟。
+
+| 方案 | 咨询被拒 | 报告被拒 | 校正被拒 | 同时在跑的最高个数 | 是否碰到「不得加池、不得提高并发」 |
+| --- | --- | --- | --- | --- | --- |
+| O1 现状 | 40% | 0% | 17% | 2 | 否 |
+| O2 咨询单独小池 | 0% | 0% | 17% | 3 | 是，本单不实现 |
+| O3 咨询最多再等 1.5 秒 | 30% | 0% | 33% | 2 | 否，本单不实现 |
+| O4 重任务最多占 1 个名额 | 0% | 0% | 67% | 2 | 否，本单不实现 |
+
+这是一分钟的草图，不是 staging 上的真实频率。咨询少被拒的时候，校正会多被拒（O3、O4）。O2 咨询不再被拒，但同时在跑的个数到了 3，越过了现在的上限。
@@ -183,8 +183,10 @@ export async function POST(request: Request) {
      synastryBirthPayload(globalBirthProfileFromAccountRow(selfResolved.row)),
      synastryBirthPayload(globalBirthProfileFromAccountRow(partnerResolved.row)),
    ]);
-    const selfChart = await postPython("/api/chart", selfPayload);
-    const partnerChart = await postPython("/api/chart", partnerPayload);
+    const [selfChart, partnerChart] = await Promise.all([
+      postPython("/api/chart", { ...selfPayload, skip_vedastro_main_entry_overview: true }),
+      postPython("/api/chart", { ...partnerPayload, skip_vedastro_main_entry_overview: true }),
+    ]);
    const relationshipType = parsed.data.relationshipType === "business" || parsed.data.relationshipType === "family" || parsed.data.relationshipType === "general"
      ? parsed.data.relationshipType
      : "romance";
@@ -210,18 +212,20 @@ export async function POST(request: Request) {
        message: "该关系类型尚无可验证的专用合盘计算合同；已保留问题草稿。",
      });
    }
-    const selfD9 = await postPython("/api/varga_full", {
-      ...selfPayload,
-      planets: selfChart.planets,
-      ascendant: selfChart.ascendant,
-      divisions: ["D9"],
-    });
-    const partnerD9 = await postPython("/api/varga_full", {
-      ...partnerPayload,
-      planets: partnerChart.planets,
-      ascendant: partnerChart.ascendant,
-      divisions: ["D9"],
-    });
+    const [selfD9, partnerD9] = await Promise.all([
+      postPython("/api/varga_full", {
+        ...selfPayload,
+        planets: selfChart.planets,
+        ascendant: selfChart.ascendant,
+        divisions: ["D9"],
+      }),
+      postPython("/api/varga_full", {
+        ...partnerPayload,
+        planets: partnerChart.planets,
+        ascendant: partnerChart.ascendant,
+        divisions: ["D9"],
+      }),
+    ]);
    const synastry = await postPython("/api/synastry", {
      male_moon: moonLongitude(selfChart),
      female_moon: moonLongitude(partnerChart),
@@ -0,0 +1,44 @@
+import assert from "node:assert/strict";
+import { readdirSync, readFileSync, statSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import test from "node:test";
+
+const frontendRoot = fileURLToPath(new URL("../", import.meta.url));
+const roots = ["src/app/api", "src/lib"];
+// Empty on purpose. A call site that cannot send skip must be listed here with a reason.
+const allowlist: string[] = [];
+
+function walk(dir: string): string[] {
+  const found: string[] = [];
+  for (const name of readdirSync(dir)) {
+    const full = path.join(dir, name);
+    if (statSync(full).isDirectory()) found.push(...walk(full));
+    else if (name.endsWith(".ts") || name.endsWith(".tsx")) found.push(full);
+  }
+  return found;
+}
+
+test("python /api/chart bodies from app/api and lib send skip", () => {
+  const failures: string[] = [];
+  for (const root of roots) {
+    for (const file of walk(path.join(frontendRoot, root))) {
+      const rel = path.relative(frontendRoot, file).replaceAll("\\", "/");
+      if (allowlist.includes(rel)) continue;
+      const text = readFileSync(file, "utf8");
+      const re = /["']\/api\/chart["']/g;
+      let match: RegExpExecArray | null;
+      while ((match = re.exec(text))) {
+        const idx = match.index;
+        const before = text.slice(Math.max(0, idx - 120), idx);
+        if (!/postPython\s*\(|callEngine\s*\(|fetchEngine\s*\(|fetch\s*\(/.test(before)) continue;
+        const window = text.slice(Math.max(0, idx - 40), idx + 420);
+        const sendsSkip = window.includes("skip_vedastro_main_entry_overview: true")
+          || window.includes("transitChartBody(")
+          || (/["']\/api\/chart["']\s*,\s*payload/.test(window) && text.includes("skip_vedastro_main_entry_overview: true"));
+        if (!sendsSkip) failures.push(`${rel}:${text.slice(0, idx).split("\n").length}`);
+      }
+    }
+  }
+  assert.deepEqual(failures, []);
+});
@@ -0,0 +1,103 @@
+import assert from "node:assert/strict";
+import { spawnSync } from "node:child_process";
+import { fileURLToPath } from "node:url";
+import test from "node:test";
+
+const frontendRoot = fileURLToPath(new URL("../", import.meta.url));
+const partnerId = "11111111-1111-4111-8111-111111111111";
+
+function runRoute(script: string): { romance: Record<string, unknown>; business: Record<string, unknown>; maxChart: number; maxVarga: number; chartSkip: boolean } {
+  const result = spawnSync(process.execPath, [
+    "--experimental-test-module-mocks",
+    "--import",
+    "tsx",
+    "--input-type=module",
+    "--eval",
+    script,
+  ], { cwd: frontendRoot, encoding: "utf8", timeout: 20000 });
+  assert.equal(result.status, 0, result.stderr || result.stdout);
+  const line = result.stdout.trim().split("\n").at(-1) ?? "{}";
+  return JSON.parse(line);
+}
+
+test("synastry charts send skip concurrently and keep the stubbed JSON", () => {
+  const script = String.raw`
+    import { mock } from "node:test";
+    import { pathToFileURL } from "node:url";
+    const moduleUrl = (path) => pathToFileURL(process.cwd() + "/" + path).href;
+    mock.module("server-only", { namedExports: {} });
+    mock.module("@/lib/account-deletion-server", { namedExports: { refuseWhenAccountDeletionPending: async () => null } });
+    mock.module("@/lib/product-access", { namedExports: { isProductEnabled: async () => true } });
+    mock.module("@/lib/request-rate-limit", { namedExports: { consumeUserRequestRateLimit: () => ({ ok: true, retryAfterSeconds: 1 }) } });
+    mock.module("@/lib/supabase/server", { namedExports: { createServerSupabaseClient: async () => ({ auth: { getUser: async () => ({ data: { user: { id: "user-1" } }, error: null }) } }) } });
+    mock.module("@/lib/subject-birth", { namedExports: {
+      ConsultationSubjectError: class ConsultationSubjectError extends Error {},
+      loadSubjectBirth: async () => ({ chartable: true, row: { name: "fixture" } }),
+    } });
+    mock.module("@/lib/server-owned-birth-profile", { namedExports: { globalBirthProfileFromAccountRow: (row) => row } });
+    mock.module("@/lib/global-birth-payloads", { namedExports: {
+      synastryBirthPayload: async () => ({ year: 1990, month: 1, day: 1, hour: 12, minute: 0, lat: 28.6139, lon: 77.209, tz: 5.5, ayanamsa: "lahiri" }),
+    } });
+    const chartBodies = [];
+    const maxInflight = { chart: 0, varga: 0 };
+    const inflight = { chart: 0, varga: 0 };
+    const waiters = { chart: [], varga: [] };
+    globalThis.fetch = async (inputUrl, init) => {
+      const url = String(inputUrl);
+      const body = JSON.parse(String(init.body));
+      const kind = url.endsWith("/api/chart") ? "chart" : url.endsWith("/api/varga_full") ? "varga" : "other";
+      if (kind === "chart") chartBodies.push(body);
+      if (kind === "chart" || kind === "varga") {
+        inflight[kind] += 1;
+        maxInflight[kind] = Math.max(maxInflight[kind], inflight[kind]);
+        await new Promise((resolve) => {
+          waiters[kind].push(resolve);
+          if (waiters[kind].length >= 2) {
+            const pending = waiters[kind].splice(0, 2);
+            pending.forEach((fn) => fn());
+          }
+        });
+        inflight[kind] -= 1;
+      }
+      if (url.endsWith("/api/chart")) {
+        return Response.json({
+          planets: { Moon: { lon: 12.5, sign: "Aries", nakshatra: "Ashwini", nakshatra_pada: 1, nakshatra_lord: "Ketu" } },
+          ascendant: { sign: "Leo" },
+        });
+      }
+      if (url.endsWith("/api/varga_full")) {
+        const divisions = body.divisions || [];
+        if (divisions.includes("D9")) {
+          return Response.json({ source: "engine", result: { D9_Navamsa: { ascendant: { sign: "Virgo" }, planets: { Moon: { sign: "Cancer" }, Venus: { sign: "Taurus" }, Mars: { sign: "Aries" } } } } });
+        }
+        return Response.json({ source: "engine", result: {
+          D2_Hora: { planets: { Moon: { sign: "Taurus" } } },
+          D10_Dasamsa: { ascendant: { sign: "Libra" } },
+          D11_Rudramsa: { planets: { Sun: { sign: "Capricorn" } } },
+        } });
+      }
+      if (url.endsWith("/api/synastry")) return Response.json({ total_score: 18, max_score: 36 });
+      return Response.json({}, { status: 500 });
+    };
+    const { POST } = await import(moduleUrl("src/app/api/synastry/route.ts"));
+    const romanceRes = await POST(new Request("https://example.test/api/synastry", { method: "POST", body: JSON.stringify({ partnerChartProfileId: "${partnerId}", relationshipType: "romance" }) }));
+    const romance = await romanceRes.json();
+    const businessRes = await POST(new Request("https://example.test/api/synastry", { method: "POST", body: JSON.stringify({ partnerChartProfileId: "${partnerId}", relationshipType: "business" }) }));
+    const business = await businessRes.json();
+    console.log(JSON.stringify({ romance, business, maxChart: maxInflight.chart, maxVarga: maxInflight.varga, chartSkip: chartBodies.every((body) => body.skip_vedastro_main_entry_overview === true) && chartBodies.length === 4 }));
+  `;
+  const got = runRoute(script);
+  assert.equal(got.maxChart, 2);
+  assert.equal(got.maxVarga, 2);
+  assert.equal(got.chartSkip, true);
+  assert.equal(got.romance.status, "ok");
+  assert.equal(got.romance.method, "ashtakoot_plus_moon_nakshatra_d9");
+  assert.deepEqual(got.romance.selfChart, {
+    moon: { sign: "Aries", nakshatra: "Ashwini", pada: 1, lord: "Ketu", longitude: 12.5 },
+    d9: { ascendant: { sign: "Virgo" }, moon: { sign: "Cancer" }, venus: { sign: "Taurus" }, mars: { sign: "Aries" }, source: "engine" },
+  });
+  assert.equal((got.romance.relationshipReport as { scoreBand?: string }).scoreBand, "mixed");
+  assert.equal(got.business.status, "ok");
+  assert.equal(got.business.method, "d2_d10_d11_business_screening_partial");
+  assert.equal((got.business.relationshipReport as { scoreBand?: string }).scoreBand, "not_scored");
+});
@@ -9,6 +9,7 @@ from __future__ import annotations

 import contextlib
 import hashlib
+import importlib.util
 import json
 import subprocess
 import sys
@@ -22,6 +23,34 @@ from typing import Any, Callable

 ENGINE = "PyJHora/JHora"
 REPO_ROOT = Path(__file__).resolve().parents[1]
+_jhora_spec_cache: bool | None = None
+
+
+def reset_jhora_import_cache() -> None:
+    """Tests reset the process-local "is PyJHora installed?" answer."""
+    global _jhora_spec_cache
+    _jhora_spec_cache = None
+
+
+def _jhora_importable() -> bool:
+    global _jhora_spec_cache
+    if _jhora_spec_cache is None:
+        _jhora_spec_cache = importlib.util.find_spec("jhora") is not None
+    return _jhora_spec_cache
+
+
+def _no_jhora_tajaka_replay(settings: dict[str, Any]) -> dict[str, Any]:
+    """Same dict the child returns when ``import jhora`` raises ModuleNotFoundError."""
+    copied = dict(settings)
+    return {
+        "status": "blocked",
+        "reason": "pyjhora_ayanamsa_configuration_failed:ModuleNotFoundError",
+        "settings": copied,
+        "node_mode": {
+            "requested": copied.get("node_mode"),
+            "status": "unsupported_by_replay_adapter",
+        },
+    }
 _TAJAKA_YEAR_LORD_MODULE = "jhora.horoscope.transit.tajaka"
 _YEAR_LORD_MODULES = (
    "jhora.horoscope.dhasa.annual.mudda",
@@ -139,6 +168,10 @@ def _run_isolated_tajaka_year_lord(
        "settings": settings,
    }
    request_hash = _request_hash(request)
+    if not _jhora_importable():
+        replay = _no_jhora_tajaka_replay(settings)
+        replay["request_hash"] = request_hash
+        return replay
    command = [
        sys.executable,
        "-c",
@@ -276,6 +309,10 @@ def _run_isolated_annual_replay(
        "settings": settings,
    }
    request_hash = _request_hash(request)
+    if not _jhora_importable():
+        replay = _no_jhora_annual_replay(settings)
+        replay["request_hash"] = request_hash
+        return replay
    command = [
        sys.executable,
        "-c",
@@ -391,6 +428,18 @@ def _annual_worker_result(
    }


+def _no_jhora_annual_replay(settings: dict[str, Any]) -> dict[str, Any]:
+    """Same dict the annual child returns when ``import jhora`` raises ModuleNotFoundError."""
+    copied = dict(settings)
+    node_mode = {"requested": copied.get("node_mode"), "status": "unsupported_by_replay_adapter"}
+    reason = "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError"
+    return _annual_worker_result(
+        {key: {"status": "blocked", "reason": reason} for key in _ANNUAL_SURFACE_KEYS},
+        settings=copied,
+        node_mode=node_mode,
+    )
+
+
 def _annual_replay_blocked(reason: str, request_hash: str, settings: dict[str, Any]) -> dict[str, Any]:
    return _annual_worker_result(
        {key: {"status": "blocked", "reason": reason} for key in _ANNUAL_SURFACE_KEYS},
@@ -8,13 +8,17 @@ must not call this gate.

 from __future__ import annotations

+import logging
 import os
 import threading
+import time

 DEFAULT_CONCURRENCY = 2
 DEFAULT_RETRY_AFTER_SECONDS = 2
 ENV_CONCURRENCY = "JYOTISH_HEAVY_COMPUTE_CONCURRENCY"
 ENV_RETRY_AFTER = "JYOTISH_HEAVY_COMPUTE_RETRY_AFTER_SECONDS"
+ENV_GATE_CHART_OVERVIEW = "JYOTISH_GATE_CHART_OVERVIEW"
+_LOG = logging.getLogger("jyotish.heavy_compute")

 HEAVY_COMPUTE_PATHS = frozenset(
    {
@@ -46,6 +50,26 @@ HEAVY_COMPUTE_PATHS = frozenset(
 _state_lock = threading.Lock()
 _semaphore: threading.BoundedSemaphore | None = None
 _retry_after_seconds = DEFAULT_RETRY_AFTER_SECONDS
+_limit = DEFAULT_CONCURRENCY
+_holders: list[dict] = []
+_holder_seq = 0
+
+
+class _HeldSlot:
+    """One acquired heavy-compute permit, paired with the path that holds it."""
+
+    def __init__(self, semaphore: threading.BoundedSemaphore, holder_id: int) -> None:
+        self._semaphore = semaphore
+        self._holder_id = holder_id
+        self._released = False
+
+    def release(self) -> None:
+        with _state_lock:
+            if self._released:
+                return
+            self._released = True
+            _holders[:] = [item for item in _holders if item["id"] != self._holder_id]
+            self._semaphore.release()


 class HeavyComputeBusy(RuntimeError):
@@ -80,7 +104,7 @@ def reset_heavy_compute_gate(
    retry_after_seconds: int | None = None,
 ) -> None:
    """Rebuild the process-wide semaphore. Tests must call this after env changes."""
-    global _semaphore, _retry_after_seconds
+    global _semaphore, _retry_after_seconds, _limit, _holders
    resolved_limit = (
        limit
        if limit is not None
@@ -93,31 +117,96 @@ def reset_heavy_compute_gate(
    )
    with _state_lock:
        _retry_after_seconds = resolved_retry
+        _limit = resolved_limit
+        _holders = []
        _semaphore = threading.BoundedSemaphore(resolved_limit)


 def _ensure_locked() -> tuple[threading.BoundedSemaphore, int]:
-    global _semaphore, _retry_after_seconds
+    global _semaphore, _retry_after_seconds, _limit
    if _semaphore is None:
-        limit = _parse_positive_int(os.environ.get(ENV_CONCURRENCY), DEFAULT_CONCURRENCY)
+        _limit = _parse_positive_int(os.environ.get(ENV_CONCURRENCY), DEFAULT_CONCURRENCY)
        _retry_after_seconds = _parse_positive_int(
            os.environ.get(ENV_RETRY_AFTER), DEFAULT_RETRY_AFTER_SECONDS
        )
-        _semaphore = threading.BoundedSemaphore(limit)
+        _semaphore = threading.BoundedSemaphore(_limit)
    return _semaphore, _retry_after_seconds


-def acquire_heavy_compute_slot(path: str) -> threading.BoundedSemaphore | None:
+def _holder_view(now: float) -> list[dict]:
+    return [
+        {
+            "path": item["path"],
+            "held_seconds": round(max(now - item["started"], 0.0), 3),
+        }
+        for item in _holders
+    ]
+
+
+def _acquire_recorded(path: str) -> _HeldSlot:
+    """Take one permit and remember which path holds it. Fail fast when full."""
+    global _holder_seq
+    with _state_lock:
+        semaphore, retry_after = _ensure_locked()
+        if not semaphore.acquire(blocking=False):
+            snapshot = _holder_view(time.monotonic())
+            failed = True
+            slot = None
+        else:
+            _holder_seq += 1
+            holder_id = _holder_seq
+            _holders.append({"id": holder_id, "path": path, "started": time.monotonic()})
+            failed = False
+            snapshot = []
+            slot = _HeldSlot(semaphore, holder_id)
+    if failed:
+        _LOG.warning(
+            "heavy_compute_busy rejected_path=%s holders=%s",
+            path,
+            snapshot,
+        )
+        raise HeavyComputeBusy(retry_after)
+    assert slot is not None
+    return slot
+
+
+def acquire_heavy_compute_slot(path: str) -> _HeldSlot | None:
    """Acquire a slot for a gated path. Light paths return None. Fail-fast on saturation."""
    if not is_heavy_compute_path(path):
        return None
+    return _acquire_recorded(path)
+
+
+def _chart_overview_gate_enabled() -> bool:
+    return os.environ.get(ENV_GATE_CHART_OVERVIEW, "").strip() == "1"
+
+
+def acquire_heavy_compute_slot_for_request(path: str, body: dict | None) -> _HeldSlot | None:
+    """Path gate, plus the chart-overview switch and the warm-consultation exception.
+
+    ``/api/chart`` stays out of ``HEAVY_COMPUTE_PATHS``. It takes a slot only when
+    ``JYOTISH_GATE_CHART_OVERVIEW=1``, the body does not skip the VedAstro overview,
+    and the body is not an async enqueue. Default is off.
+    """
+    payload = body if isinstance(body, dict) else {}
+    if path == "/api/consultation_workflow" and payload.get("consult_card_warm_only") is True:
+        return None
+    if path == "/api/chart" and _chart_overview_gate_enabled():
+        if payload.get("async") or payload.get("enqueue"):
+            return None
+        if payload.get("skip_vedastro_main_entry_overview"):
+            return None
+        return _acquire_recorded(path)
+    return acquire_heavy_compute_slot(path)
+
+
+def heavy_compute_status() -> dict:
+    """Process-local counts only. No request body and no user identity."""
    with _state_lock:
-        semaphore, retry_after = _ensure_locked()
-    if not semaphore.acquire(blocking=False):
-        raise HeavyComputeBusy(retry_after)
-    return semaphore
+        _ensure_locked()
+        return {"limit": _limit, "in_use": len(_holders)}


-def release_heavy_compute_slot(slot: threading.BoundedSemaphore | None) -> None:
+def release_heavy_compute_slot(slot: _HeldSlot | None) -> None:
    if slot is not None:
        slot.release()
@@ -122,13 +122,13 @@ except ModuleNotFoundError:  # pragma: no cover - script execution path
 try:
    from scripts.api_heavy_compute_gate import (
        HeavyComputeBusy,
-        acquire_heavy_compute_slot,
+        acquire_heavy_compute_slot_for_request,
        release_heavy_compute_slot,
    )
 except ModuleNotFoundError:  # pragma: no cover - script execution path
    from api_heavy_compute_gate import (
        HeavyComputeBusy,
-        acquire_heavy_compute_slot,
+        acquire_heavy_compute_slot_for_request,
        release_heavy_compute_slot,
    )

@@ -3345,14 +3345,10 @@ class JyotishAPIHandler(BaseHTTPRequestHandler, VedastroEvidenceMixin, SynastryM
        try:
            self._enforce_request_security(require_json=True)
            body = self._read_json_body()
-            # Chart-save warm builds today's packet on the same route. It must
-            # not take a heavy-compute slot: the cap is 2, and a question asked
-            # right after save would otherwise come back 429.
-            warm_only = (
-                path == '/api/consultation_workflow'
-                and body.get('consult_card_warm_only') is True
-            )
-            compute_slot = None if warm_only else acquire_heavy_compute_slot(path)
+            # Warm chart-save must not take a slot (BUG-1302). Chart overview
+            # gating is off unless JYOTISH_GATE_CHART_OVERVIEW=1. Both live in
+            # the gate module so this file only keeps the call.
+            compute_slot = acquire_heavy_compute_slot_for_request(path, body)
            if path == '/api/location/resolve':
                city = str(body.get('city') or '').strip()
                city_aliases = {'beijing': '北京', 'shanghai': '上海', 'guangzhou': '广州', 'shenzhen': '深圳'}
@@ -10762,7 +10762,25 @@ def _planet_snapshot(planets, planet_name):
    }


+_oracle_progress_cache: dict = {}
+
+
+def reset_oracle_progress_snapshot_cache():
+    """Tests clear the static-file validation cache."""
+    _oracle_progress_cache.clear()
+
+
+def _oracle_progress_cache_key(oracle_file):
+    try:
+        stat = oracle_file.stat()
+    except OSError:
+        return None
+    mtime = getattr(stat, 'st_mtime_ns', stat.st_mtime)
+    return (str(oracle_file.resolve()), mtime, stat.st_size)
+
+
 def _oracle_progress_snapshot():
+    cache_key = None
    try:
        import json
        import subprocess
@@ -10772,6 +10790,9 @@ def _oracle_progress_snapshot():

        root = Path(__file__).resolve().parents[1]
        oracle_file = root / 'references' / 'oracle' / 'dasha_shadbala_oracle_cases.json'
+        cache_key = _oracle_progress_cache_key(oracle_file)
+        if cache_key is not None and cache_key in _oracle_progress_cache:
+            return _oracle_progress_cache[cache_key]
        with tempfile.TemporaryDirectory() as temp_dir:
            queue_path = Path(temp_dir) / 'oracle-queue.json'
            queue = subprocess.run(
@@ -10797,7 +10818,7 @@ def _oracle_progress_snapshot():
                raise RuntimeError(validation.stderr.strip() or validation.stdout.strip())
            report = json.loads(validation.stdout)
        summary = report.get('summary', {})
-        return {
+        result = {
            'scope': 'external_oracle_evidence_validation',
            'collection_queue': 'external_oracle_collection_queue',
            'total_packets': summary.get('total_packets', 0),
@@ -10809,7 +10830,7 @@ def _oracle_progress_snapshot():
            'boundary': report.get('boundary', 'Dasha/Shadbala absolute values are not externally calibrated until enough packets pass validation.'),
        }
    except Exception as exc:
-        return {
+        result = {
            'scope': 'external_oracle_evidence_validation',
            'collection_queue': 'external_oracle_collection_queue',
            'total_packets': 0,
@@ -10820,6 +10841,9 @@ def _oracle_progress_snapshot():
            'promotion_rule': 'external_verified requires source_artifact, filled target values, and non-local-engine external evidence.',
            'boundary': f'Oracle progress unavailable: {exc}',
        }
+    if cache_key is not None:
+        _oracle_progress_cache[cache_key] = result
+    return result


 # Combustion orbs of the full reading (Step 5 shadbala block). The Moon, Rahu
@@ -0,0 +1,272 @@
+"""A/B for issue #64. A is this branch with the PyJHora short-circuit forced off
+(the staging control flow: always spawn). B is the short-circuit on.
+
+Chart skip/concurrency is measured on the real chart call. The gate schemes
+O2/O3/O4 are simulated only and are not implemented.
+
+Volatile fields dropped before the report byte compare:
+generated_at, created_at, timestamp, elapsed_seconds, elapsed_ms, duration_ms, request_id.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import random
+import statistics
+import subprocess
+import sys
+import threading
+import time
+from concurrent.futures import ThreadPoolExecutor
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(ROOT))
+sys.path.insert(0, str(ROOT / "scripts"))
+
+os.environ.setdefault("JYOTISH_API_CHART_CACHE_TTL_SECONDS", "0")
+os.environ.setdefault("VEDASTRO_ENABLE_NETWORK", "0")
+os.environ.setdefault("JYOTISH_GATE_CHART_OVERVIEW", "0")
+
+import annual_pyjhora_replay as replay  # noqa: E402
+import tajika as tajika_top  # noqa: E402
+from scripts.jyotish_api_server import JyotishAPIHandler  # noqa: E402
+from scripts.jyotish_engine import reset_oracle_progress_snapshot_cache  # noqa: E402
+from scripts.professional_report_reference import build_professional_report_reference  # noqa: E402
+from scripts.tajika import reset_external_pyjhora_python_cache  # noqa: E402
+
+BIRTH = {
+    "year": 1990,
+    "month": 1,
+    "day": 1,
+    "hour": 12,
+    "minute": 0,
+    "second": 0,
+    "lat": 28.6139,
+    "lon": 77.2090,
+    "tz": 5.5,
+    "ayanamsa": "lahiri",
+    "node_mode": "true",
+}
+PARTNER = {**BIRTH, "year": 1992, "day": 2}
+VOLATILE = {"generated_at", "created_at", "timestamp", "elapsed_seconds", "elapsed_ms", "duration_ms", "request_id"}
+
+
+class _Counter:
+    def __init__(self) -> None:
+        self.n = 0
+        self._real = subprocess.run
+        self._lock = threading.Lock()
+
+    def install(self) -> None:
+        def _run(*args, **kwargs):
+            with self._lock:
+                self.n += 1
+            return self._real(*args, **kwargs)
+
+        subprocess.run = _run  # type: ignore[assignment]
+        for module in list(sys.modules.values()):
+            bound = getattr(module, "subprocess", None)
+            if getattr(bound, "run", None) is self._real:
+                bound.run = _run  # type: ignore[union-attr]
+
+    def reset(self) -> None:
+        with self._lock:
+            self.n = 0
+
+
+def _median(values: list[float]) -> float:
+    return statistics.median(values) if values else 0.0
+
+
+def _strip(value):
+    if isinstance(value, dict):
+        return {key: _strip(item) for key, item in value.items() if key not in VOLATILE}
+    if isinstance(value, list):
+        return [_strip(item) for item in value]
+    return value
+
+
+def _canon(value) -> str:
+    return json.dumps(_strip(value), sort_keys=True, ensure_ascii=True, default=str)
+
+
+def _chart_summary(chart: dict) -> dict:
+    planets = chart.get("planets") if isinstance(chart, dict) else None
+    moon = planets.get("Moon") if isinstance(planets, dict) else None
+    lon = None
+    if isinstance(moon, dict):
+        lon = moon.get("lon", moon.get("longitude"))
+    return {
+        "ascendant": chart.get("ascendant") if isinstance(chart, dict) else None,
+        "planets": planets,
+        "moon_longitude": lon,
+    }
+
+
+def _one_chart(body: dict) -> tuple[float, dict]:
+    started = time.perf_counter()
+    chart = object.__new__(JyotishAPIHandler)._compute_chart_sync(body)
+    return time.perf_counter() - started, chart
+
+
+def _measure_charts(counter: _Counter) -> dict:
+    serial_times = []
+    concurrent_times = []
+    serial_subs = []
+    concurrent_subs = []
+    same = True
+    for _ in range(3):
+        counter.reset()
+        started = time.perf_counter()
+        _, self_a = _one_chart(BIRTH)
+        _, partner_a = _one_chart(PARTNER)
+        serial_times.append(time.perf_counter() - started)
+        serial_subs.append(counter.n)
+        counter.reset()
+        started = time.perf_counter()
+        with ThreadPoolExecutor(max_workers=2) as pool:
+            self_b = pool.submit(_one_chart, {**BIRTH, "skip_vedastro_main_entry_overview": True})
+            partner_b = pool.submit(_one_chart, {**PARTNER, "skip_vedastro_main_entry_overview": True})
+            _, self_chart = self_b.result()
+            _, partner_chart = partner_b.result()
+        concurrent_times.append(time.perf_counter() - started)
+        concurrent_subs.append(counter.n)
+        same = same and _canon(_chart_summary(self_a)) == _canon(_chart_summary(self_chart))
+        same = same and _canon(_chart_summary(partner_a)) == _canon(_chart_summary(partner_chart))
+    return {
+        "serial_seconds_median": round(_median(serial_times), 4),
+        "concurrent_skip_seconds_median": round(_median(concurrent_times), 4),
+        "serial_subprocesses_median": _median(serial_subs),
+        "concurrent_skip_subprocesses_median": _median(concurrent_subs),
+        "summary_bytes_match": same,
+    }
+
+
+def _measure_report(counter: _Counter, *, spawn: bool) -> dict:
+    times = []
+    subs = []
+    payload = None
+    body = {**BIRTH, "format": "markdown", "edition": "full_data", "languages": ["zh", "en"], "include_fact_tables": True}
+    for _ in range(3):
+        replay.reset_jhora_import_cache()
+        if spawn:
+            replay._jhora_spec_cache = True
+        reset_oracle_progress_snapshot_cache()
+        reset_external_pyjhora_python_cache()
+        tajika_top.reset_external_pyjhora_python_cache()
+        counter.reset()
+        started = time.perf_counter()
+        payload = build_professional_report_reference(
+            object.__new__(JyotishAPIHandler),
+            body,
+        )
+        times.append(time.perf_counter() - started)
+        subs.append(counter.n)
+    return {
+        "seconds_median": round(_median(times), 4),
+        "subprocesses_median": _median(subs),
+        "payload": payload,
+    }
+
+
+def _simulate() -> list[dict]:
+    """One fixed minute. O2 adds a second pool and is the only scheme that touches BUG-717."""
+    rng = random.Random(64)
+    arrivals = [("report", index * 30.0, 13.0) for index in range(2)]
+    arrivals += [("consult", rng.random() * 60.0, 0.2) for _ in range(20)]
+    arrivals += [("score", rng.random() * 60.0, 8.0) for _ in range(6)]
+    arrivals.sort(key=lambda item: item[1])
+
+    def run(mode: str) -> dict:
+        heavy: list[tuple[float, str]] = []
+        light: list[float] = []
+        rejected = {"consult": 0, "report": 0, "score": 0}
+        accepted = {"consult": 0, "report": 0, "score": 0}
+        peak = 0
+
+        def occupy(at: float) -> tuple[int, int]:
+            running = [item for item in heavy if item[0] > at]
+            lights = [item for item in light if item > at]
+            return len(running), len(lights)
+
+        for kind, arrival, duration in arrivals:
+            heavy_n, light_n = occupy(arrival)
+            heavy = [item for item in heavy if item[0] > arrival]
+            light = [item for item in light if item > arrival]
+            placed = False
+            stamp = arrival
+            if mode == "O2" and kind == "consult":
+                if light_n < 2:
+                    light.append(arrival + duration)
+                    placed = True
+            elif mode == "O3" and kind == "consult":
+                start = arrival
+                while start <= arrival + 1.5:
+                    heavy_n, _light_n = occupy(start)
+                    if heavy_n < 2:
+                        heavy.append((start + duration, kind))
+                        placed = True
+                        stamp = start
+                        break
+                    nxt = min(item[0] for item in heavy)
+                    if nxt > arrival + 1.5:
+                        break
+                    start = nxt
+            elif mode == "O4" and kind != "consult":
+                heavy_jobs = sum(1 for _end, slot in heavy if slot != "consult")
+                if heavy_jobs < 1 and heavy_n < 2:
+                    heavy.append((arrival + duration, kind))
+                    placed = True
+            else:
+                if heavy_n < 2:
+                    heavy.append((arrival + duration, kind))
+                    placed = True
+            if placed:
+                accepted[kind] += 1
+            else:
+                rejected[kind] += 1
+            running, lights = occupy(stamp)
+            peak = max(peak, running + lights)
+
+        def rate(kind: str) -> str:
+            total = accepted[kind] + rejected[kind]
+            return "0" if total == 0 else f"{rejected[kind] / total:.2f}"
+
+        return {
+            "scheme": mode,
+            "consult_429": rate("consult"),
+            "report_429": rate("report"),
+            "score_429": rate("score"),
+            "peak": peak,
+            "touches_bug_717": mode == "O2",
+        }
+
+    return [run(mode) for mode in ("O1", "O2", "O3", "O4")]
+
+
+def main() -> None:
+    counter = _Counter()
+    counter.install()
+    charts = _measure_charts(counter)
+    forced = _measure_report(counter, spawn=True)
+    native = _measure_report(counter, spawn=False)
+    report_match = _canon(forced["payload"]) == _canon(native["payload"])
+    schemes = _simulate()
+    out = {
+        "charts": charts,
+        "report_forced_subprocess": {key: value for key, value in forced.items() if key != "payload"},
+        "report_short_circuit": {key: value for key, value in native.items() if key != "payload"},
+        "report_bytes_match": report_match,
+        "schemes": schemes,
+        "jhora_installed": False,
+    }
+    text = json.dumps(out, ensure_ascii=False, indent=2)
+    dest = ROOT / "docs" / "testing" / "api-chart-subprocess-gate-ab-20261013.json"
+    dest.write_text(text + "\n", encoding="utf-8")
+    print(text)
+
+
+if __name__ == "__main__":
+    main()
@@ -1501,7 +1501,28 @@ print(json.dumps({str(k): float(v) for k, v in dict(scores).items()}))
        return None


+_external_pyjhora_python_cached = False
+_external_pyjhora_python_value: Optional[str] = None
+
+
+def reset_external_pyjhora_python_cache() -> None:
+    """Tests and a fresh process both start with no remembered interpreter."""
+    global _external_pyjhora_python_cached, _external_pyjhora_python_value
+    _external_pyjhora_python_cached = False
+    _external_pyjhora_python_value = None
+
+
 def _resolve_external_pyjhora_python() -> Optional[str]:
+    """Remember the lookup, including "not installed", for this process."""
+    global _external_pyjhora_python_cached, _external_pyjhora_python_value
+    if _external_pyjhora_python_cached:
+        return _external_pyjhora_python_value
+    _external_pyjhora_python_value = _lookup_external_pyjhora_python()
+    _external_pyjhora_python_cached = True
+    return _external_pyjhora_python_value
+
+
+def _lookup_external_pyjhora_python() -> Optional[str]:
    candidates = [
        os.environ.get('JYOTISH_PYJHORA_PYTHON'),
        shutil.which('python3.14'),
@@ -0,0 +1,6 @@
+Generated 2026-10-15 by calling the isolated workers with PyJHora absent
+(importlib.util.find_spec("jhora") is None on the Windows venv):
+
+  .venv\Scripts\python -c "import json; from scripts.annual_pyjhora_replay import _isolated_tajaka_worker, _isolated_annual_worker; req={'birth_julian_day':2447893.0,'place':{'name':'Delhi','latitude':28.6139,'longitude':77.209,'timezone':5.5,'elevation':0},'age':30,'settings':{'ayanamsa':'LAHIRI','node_mode':'mean'}}; print(json.dumps(_isolated_tajaka_worker(req), sort_keys=True)); print(json.dumps(_isolated_annual_worker(req), sort_keys=True, default=str))"
+
+The parent adds request_hash after this body. The short-circuit must match this body.
@@ -0,0 +1,41 @@
+{
+  "annual_chart_snapshot": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "annual_chart_speed_snapshot": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "effective_ayanamsa": null,
+  "evidence_scope": "pyjhora_behavior_only",
+  "mudda_dasha": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "node_mode": {
+    "requested": "mean",
+    "status": "unsupported_by_replay_adapter"
+  },
+  "parity_status": "not_multiengine_parity",
+  "patyayini_dasha": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "sahams": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "settings": {
+    "ayanamsa": "LAHIRI",
+    "node_mode": "mean"
+  },
+  "solar_return_boundary": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  },
+  "tajika_yogas": {
+    "reason": "pyjhora_annual_adapter_setup_failed:ModuleNotFoundError",
+    "status": "blocked"
+  }
+}
@@ -0,0 +1,12 @@
+{
+  "node_mode": {
+    "requested": "mean",
+    "status": "unsupported_by_replay_adapter"
+  },
+  "reason": "pyjhora_ayanamsa_configuration_failed:ModuleNotFoundError",
+  "settings": {
+    "ayanamsa": "LAHIRI",
+    "node_mode": "mean"
+  },
+  "status": "blocked"
+}
@@ -0,0 +1,197 @@
+"""Issue #64: skip useless report subprocesses and observe the heavy-compute gate."""
+
+from __future__ import annotations
+
+import json
+import logging
+from pathlib import Path
+
+import pytest
+
+from scripts import api_heavy_compute_gate as gate
+from scripts.annual_pyjhora_replay import (
+    _run_isolated_annual_replay,
+    _run_isolated_tajaka_year_lord,
+    reset_jhora_import_cache,
+)
+from scripts.jyotish_engine import (
+    _oracle_progress_snapshot,
+    reset_oracle_progress_snapshot_cache,
+)
+from scripts.tajika import (
+    _resolve_external_pyjhora_python,
+    reset_external_pyjhora_python_cache,
+)
+
+ROOT = Path(__file__).resolve().parents[1]
+FIXTURES = ROOT / "tests" / "fixtures" / "api-chart-subprocess-gate"
+
+
+class _Place:
+    name = "Delhi"
+    latitude = 28.6139
+    longitude = 77.209
+    timezone = 5.5
+    elevation = 0
+
+
+_PROFILE = {"ayanamsa": "LAHIRI", "node_mode": "mean"}
+
+
+def _without_hash(payload: dict) -> dict:
+    body = dict(payload)
+    body.pop("request_hash", None)
+    return body
+
+
+def test_no_jhora_tajaka_skips_subprocess_and_matches_golden(monkeypatch) -> None:
+    reset_jhora_import_cache()
+    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: False)
+
+    def _forbid_subprocess(*_args, **_kwargs):
+        raise AssertionError("subprocess.run must not run when jhora cannot be imported")
+
+    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _forbid_subprocess)
+    result = _run_isolated_tajaka_year_lord(_PROFILE, 2447893.0, _Place(), 30)
+    golden = json.loads((FIXTURES / "tajaka-no-jhora.json").read_text(encoding="utf-8"))
+    assert result["request_hash"]
+    assert _without_hash(result) == golden
+
+
+def test_no_jhora_annual_skips_subprocess_and_matches_golden(monkeypatch) -> None:
+    reset_jhora_import_cache()
+    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: False)
+
+    def _forbid_subprocess(*_args, **_kwargs):
+        raise AssertionError("subprocess.run must not run when jhora cannot be imported")
+
+    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _forbid_subprocess)
+    result = _run_isolated_annual_replay(_PROFILE, 2447893.0, _Place(), 30)
+    golden = json.loads((FIXTURES / "annual-no-jhora.json").read_text(encoding="utf-8"))
+    assert result["request_hash"]
+    assert _without_hash(result) == golden
+
+
+def test_jhora_available_still_uses_subprocess(monkeypatch) -> None:
+    reset_jhora_import_cache()
+    monkeypatch.setattr("scripts.annual_pyjhora_replay._jhora_importable", lambda: True)
+    calls = {"n": 0}
+
+    class _Completed:
+        returncode = 0
+        stdout = json.dumps({"status": "partial_verified", "settings": {}})
+
+    def _fake_run(*_args, **_kwargs):
+        calls["n"] += 1
+        return _Completed()
+
+    monkeypatch.setattr("scripts.annual_pyjhora_replay.subprocess.run", _fake_run)
+    tajaka = _run_isolated_tajaka_year_lord(_PROFILE, 2447893.0, _Place(), 30)
+    annual = _run_isolated_annual_replay(_PROFILE, 2447893.0, _Place(), 30)
+    assert calls["n"] == 2
+    assert tajaka["request_hash"]
+    assert annual["request_hash"]
+
+
+def test_pyjhora_interpreter_lookup_is_cached(monkeypatch) -> None:
+    reset_external_pyjhora_python_cache()
+    calls = {"n": 0}
+
+    def _missing():
+        calls["n"] += 1
+        return None
+
+    monkeypatch.setattr("scripts.tajika._lookup_external_pyjhora_python", _missing)
+    assert _resolve_external_pyjhora_python() is None
+    assert _resolve_external_pyjhora_python() is None
+    assert calls["n"] == 1
+
+
+def test_oracle_progress_snapshot_reuses_until_the_file_changes(monkeypatch) -> None:
+    reset_oracle_progress_snapshot_cache()
+    calls = {"n": 0}
+    real_run = __import__("subprocess").run
+
+    def _counting_run(*args, **kwargs):
+        calls["n"] += 1
+        return real_run(*args, **kwargs)
+
+    monkeypatch.setattr("subprocess.run", _counting_run)
+    first = _oracle_progress_snapshot()
+    after_first = calls["n"]
+    assert after_first >= 1
+    second = _oracle_progress_snapshot()
+    assert calls["n"] == after_first
+    assert second == first
+
+    oracle = ROOT / "references" / "oracle" / "dasha_shadbala_oracle_cases.json"
+    stat = oracle.stat()
+    later = stat.st_mtime + 5
+    try:
+        oracle.touch()
+        import os
+        os.utime(oracle, (later, later))
+        third = _oracle_progress_snapshot()
+        assert calls["n"] > after_first
+        assert third["scope"] == first["scope"]
+    finally:
+        os_utime = __import__("os").utime
+        os_utime(oracle, (stat.st_atime, stat.st_mtime))
+        reset_oracle_progress_snapshot_cache()
+
+
+def test_chart_overview_gate_is_off_by_default(monkeypatch) -> None:
+    monkeypatch.delenv(gate.ENV_GATE_CHART_OVERVIEW, raising=False)
+    gate.reset_heavy_compute_gate(limit=1)
+    held = gate.acquire_heavy_compute_slot("/api/high_rigor_workflow")
+    assert held is not None
+    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"year": 1990}) is None
+    gate.release_heavy_compute_slot(held)
+    assert gate.heavy_compute_status()["in_use"] == 0
+    gate.reset_heavy_compute_gate()
+
+
+def test_chart_overview_gate_only_sync_unskipped_requests(monkeypatch) -> None:
+    monkeypatch.setenv(gate.ENV_GATE_CHART_OVERVIEW, "1")
+    gate.reset_heavy_compute_gate(limit=1)
+    body = {"year": 1990, "lat": 28.6, "lon": 77.2}
+    slot = gate.acquire_heavy_compute_slot_for_request("/api/chart", body)
+    assert slot is not None
+    assert gate.heavy_compute_status() == {"limit": 1, "in_use": 1}
+    with pytest.raises(gate.HeavyComputeBusy):
+        gate.acquire_heavy_compute_slot_for_request("/api/chart", {"year": 1991})
+    gate.release_heavy_compute_slot(slot)
+    assert gate.heavy_compute_status()["in_use"] == 0
+    assert gate.acquire_heavy_compute_slot_for_request(
+        "/api/chart", {"skip_vedastro_main_entry_overview": True}
+    ) is None
+    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"async": True}) is None
+    assert gate.acquire_heavy_compute_slot_for_request("/api/chart", {"enqueue": 1}) is None
+    assert "/api/chart" not in gate.HEAVY_COMPUTE_PATHS
+    gate.reset_heavy_compute_gate()
+
+
+def test_busy_log_names_holders_and_not_the_body(caplog) -> None:
+    gate.reset_heavy_compute_gate(limit=1)
+    held = gate.acquire_heavy_compute_slot("/api/professional_report_reference")
+    assert held is not None
+    secret_body = {"birth_date": "1990-01-01", "name": "must-not-appear"}
+    with caplog.at_level(logging.WARNING, logger="jyotish.heavy_compute"):
+        with pytest.raises(gate.HeavyComputeBusy):
+            gate.acquire_heavy_compute_slot_for_request("/api/professional_report_reference", secret_body)
+    text = caplog.text
+    assert "/api/professional_report_reference" in text
+    assert "1990-01-01" not in text
+    assert "must-not-appear" not in text
+    gate.release_heavy_compute_slot(held)
+    assert gate.heavy_compute_status()["in_use"] == 0
+    gate.reset_heavy_compute_gate()
+
+
+def test_warm_consultation_still_skips_the_slot() -> None:
+    gate.reset_heavy_compute_gate(limit=1)
+    assert gate.acquire_heavy_compute_slot_for_request(
+        "/api/consultation_workflow", {"consult_card_warm_only": True}
+    ) is None
+    assert gate.heavy_compute_status()["in_use"] == 0
+    gate.reset_heavy_compute_gate()