Use four-decimal fractional quantity steps

README.md

@@ -66,15 +66,15 @@ Telegram notifications include structured execution and heartbeat messages, with
 | `ACCOUNT_REGION` | No | Account region marker for platform-style deployment (e.g. `HK`, `SG`; defaults to `ACCOUNT_PREFIX` / `DEFAULT`) |
 | `LONGBRIDGE_DRY_RUN_ONLY` | No | Set to `true` to keep the selected deployment in dry-run mode. |
 | `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED` | No | Defaults to `true`; set `false` to force whole-share sizing. |
-| `LONGBRIDGE_ORDER_QUANTITY_STEP` | No | Explicit order quantity step override; e.g. `1` for whole shares or `0.000001` for fractional sizing. |
+| `LONGBRIDGE_ORDER_QUANTITY_STEP` | No | Explicit order quantity step override; e.g. `1` for whole shares or `0.0001` for fractional sizing. |
 | `LONGBRIDGE_MIN_ORDER_NOTIONAL_USD` | No | Minimum buy notional for fractional sizing; defaults to `1.0`. |
 | `LONGBRIDGE_DEBUG_POSITION_SNAPSHOT` | No | Set to `true` to log raw LongBridge position quantity and available quantity for troubleshooting. |
 | `INCOME_THRESHOLD_USD` | No | Optional override for the `tqqq_growth_income` income-layer threshold. Leave unset to use the strategy package default. |
 | `QQQI_INCOME_RATIO` | No | Optional override for QQQI's share of the `tqqq_growth_income` income layer, 0–1. |
 | `NOTIFY_LANG` | No | Notification language: `en` (English, default) or `zh` (Chinese) |
 | `GOOGLE_CLOUD_PROJECT` | No | GCP project ID (defaults to ADC project when unset) |
 
-Quantity sizing is resolved at runtime: `LONGBRIDGE_ORDER_QUANTITY_STEP` wins when set; otherwise `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED=true` uses a `0.000001` step and `false` uses whole shares. When a target value is zero, sell sizing uses the sellable position quantity instead of re-deriving shares from current price, so liquidation targets do not leave a residual share because of quote drift.
+Quantity sizing is resolved at runtime: `LONGBRIDGE_ORDER_QUANTITY_STEP` wins when set; otherwise `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED=true` uses a `0.0001` step and `false` uses whole shares. When a target value is zero, sell sizing uses the sellable position quantity instead of re-deriving shares from current price, so liquidation targets do not leave a residual share because of quote drift.
 
 Secret Manager must contain the secret named by `LONGPORT_SECRET_NAME` (default: `longport_token_hk`), where the **latest version = active access token**. The app refreshes it when expiry is within 30 days.
 
@@ -217,15 +217,15 @@ Telegram 通知包含结构化的调仓和心跳消息，支持中英文切换
 | `ACCOUNT_REGION` | 否 | 平台化部署时的账户区域标记（如 `HK`、`SG`；默认按 `ACCOUNT_PREFIX` / `DEFAULT` 推断） |
 | `LONGBRIDGE_DRY_RUN_ONLY` | 否 | 设为 `true` 时，该部署保持 dry-run。 |
 | `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED` | 否 | 默认 `true`；设为 `false` 时强制按整数股计算。 |
-| `LONGBRIDGE_ORDER_QUANTITY_STEP` | 否 | 显式覆盖下单数量步进；如 `1` 表示整数股，`0.000001` 表示碎股数量步进。 |
+| `LONGBRIDGE_ORDER_QUANTITY_STEP` | 否 | 显式覆盖下单数量步进；如 `1` 表示整数股，`0.0001` 表示碎股数量步进。 |
 | `LONGBRIDGE_MIN_ORDER_NOTIONAL_USD` | 否 | 碎股买入的最小名义金额；默认 `1.0`。 |
 | `LONGBRIDGE_DEBUG_POSITION_SNAPSHOT` | 否 | 设为 `true` 时输出 LongBridge 原始持仓数量和可卖数量，便于排查。 |
 | `INCOME_THRESHOLD_USD` | 否 | 可选的 `tqqq_growth_income` 收入层启动阈值覆盖。不填时使用策略包默认值。 |
 | `QQQI_INCOME_RATIO` | 否 | 可选的 QQQI 收入层占比覆盖，0–1。 |
 | `NOTIFY_LANG` | 否 | 通知语言: `en`（英文，默认）或 `zh`（中文） |
 | `GOOGLE_CLOUD_PROJECT` | 否 | GCP 项目 ID（未设置时使用 ADC 默认项目） |
 
-下单数量在运行时解析：显式设置 `LONGBRIDGE_ORDER_QUANTITY_STEP` 时优先使用该步进；否则 `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED=true` 使用 `0.000001` 步进，`false` 使用整数股。目标市值为 0 时，卖出数量直接按可卖持仓计算，不再用当前报价反推股数，避免因报价漂移留下 1 股残仓。
+下单数量在运行时解析：显式设置 `LONGBRIDGE_ORDER_QUANTITY_STEP` 时优先使用该步进；否则 `LONGBRIDGE_FRACTIONAL_SHARES_ENABLED=true` 使用 `0.0001` 步进，`false` 使用整数股。目标市值为 0 时，卖出数量直接按可卖持仓计算，不再用当前报价反推股数，避免因报价漂移留下 1 股残仓。
 
 Secret Manager 中需存在 `LONGPORT_SECRET_NAME` 指定的密钥（默认: `longport_token_hk`），**最新版本 = 当前有效的 access token**。Token 到期前 30 天会自动刷新。
 

requirements.txt

@@ -1,7 +1,7 @@
 flask
 gunicorn
-quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@08ed04ae9796f54a2218ffb700f97e0e33bf312f
-us-equity-strategies @ git+https://github.com/QuantStrategyLab/UsEquityStrategies.git@c9ec484c9a12cdffedf7d87c8906b93b21f50b1c
+quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@268171a74a1b522f03940af399f71c37e9a32c70
+us-equity-strategies @ git+https://github.com/QuantStrategyLab/UsEquityStrategies.git@47685bce6187b5e7d3f93bab72b72a7fc0d119d7
 pandas
 requests
 pytz

runtime_config_support.py

@@ -110,6 +110,7 @@ def load_platform_runtime_settings(
             step_env="LONGBRIDGE_ORDER_QUANTITY_STEP",
             fractional_env="LONGBRIDGE_FRACTIONAL_SHARES_ENABLED",
             fractional_default=True,
+            fractional_step=0.0001,
         ),
         min_order_notional=resolve_float_env(
             os.environ,

tests/test_rebalance_service.py

@@ -573,12 +573,12 @@ def test_fractional_quantity_step_allows_small_soxx_target_buy(self):
             plan,
             prices={"SOXX.US": 504.60, "SOXL.US": 162.93, "BOXX.US": 116.59},
             estimate_max_purchase_quantity_value=10,
-            quantity_step=0.000001,
+            quantity_step=0.0001,
             min_order_notional=1.0,
         )
 
         self.assertEqual(len(sent_messages), 1)
-        self.assertIn("限价买入] SOXX: 0.321699股", sent_messages[0])
+        self.assertIn("限价买入] SOXX: 0.3216股", sent_messages[0])
         self.assertNotIn("不足买入 1 股", sent_messages[0])
 
     def test_zero_target_sell_uses_sellable_quantity_not_price_derived_floor(self):
@@ -636,12 +636,12 @@ def test_fractional_buy_uses_budget_when_broker_estimate_is_whole_share_zero(sel
             plan,
             prices={"SOXX.US": 504.60},
             estimate_max_purchase_quantity_value=0,
-            quantity_step=0.000001,
+            quantity_step=0.0001,
             min_order_notional=1.0,
         )
 
         self.assertEqual(len(sent_messages), 1)
-        self.assertIn("限价买入] SOXX: 0.321699股", sent_messages[0])
+        self.assertIn("限价买入] SOXX: 0.3216股", sent_messages[0])
         self.assertNotIn("券商估算可买数量为 0", sent_messages[0])
 
     def test_zero_investable_cash_reports_buying_power_without_trade_note(self):

tests/test_runtime_composer.py

@@ -50,7 +50,7 @@ def fake_bootstrap_builder(**kwargs):
         limit_buy_premium=1.005,
         order_poll_interval_sec=1,
         order_poll_max_attempts=8,
-        quantity_step=0.000001,
+        quantity_step=0.0001,
         min_order_notional=1.0,
         dry_run_only=True,
         broker_adapters=SimpleNamespace(
@@ -113,7 +113,7 @@ def fake_bootstrap_builder(**kwargs):
     assert runtime.post_submit_order == "post-submit-order"
     assert config.limit_sell_discount == 0.995
     assert config.limit_buy_premium == 1.005
-    assert config.quantity_step == 0.000001
+    assert config.quantity_step == 0.0001
     assert config.min_order_notional == 1.0
     assert config.strategy_display_name == "SOXL/SOXX 半导体趋势收益"
     assert config.dry_run_only is True

tests/test_runtime_config_support.py

@@ -52,7 +52,7 @@ def test_load_platform_runtime_settings_uses_defaults_with_explicit_strategy_pro
         self.assertIsNone(settings.tg_token)
         self.assertIsNone(settings.tg_chat_id)
         self.assertFalse(settings.dry_run_only)
-        self.assertEqual(settings.quantity_step, 0.000001)
+        self.assertEqual(settings.quantity_step, 0.0001)
         self.assertEqual(settings.min_order_notional, 1.0)
         self.assertFalse(settings.debug_position_snapshot)
         self.assertIsNone(settings.income_threshold_usd)