Merge branch 'worktree-gesture-humanize': gesture primitives + humanize

Adds long_press/double_tap atomic gestures, a centralized humanize layer
(coordinate jitter, curved W3C-Actions swipe, timing jitter) gated by
APEX_HUMANIZE_ENABLED, and planner integration. 651 non-integration tests
pass on the branch.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/device-host-agent/tests/test_e2e.py

@@ -47,6 +47,9 @@ class FakeDriver(Driver):
     def tap(self, x: float, y: float) -> None:
         self.calls.append(("tap", (x, y)))
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        return None
+
     def swipe(
         self,
         start_x: float,
@@ -57,6 +60,14 @@ class FakeDriver(Driver):
     ) -> None:
         return None
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        return None
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        return None
+
     def input(self, text: str) -> None:
         return None
 

apps/device-host-agent/tests/test_execution.py

@@ -33,6 +33,9 @@ class FakeDriver(Driver):
     def tap(self, x: float, y: float) -> None:
         return None
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        return None
+
     def swipe(
         self,
         start_x: float,
@@ -43,6 +46,14 @@ class FakeDriver(Driver):
     ) -> None:
         return None
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        return None
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        return None
+
     def input(self, text: str) -> None:
         return None
 

driver/_w3c_actions.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+from typing import Any
+
+POINTER_ID = "finger1"
+
+
+def _pointer(*actions: dict[str, Any]) -> list[dict[str, Any]]:
+    return [
+        {
+            "type": "pointer",
+            "id": POINTER_ID,
+            "parameters": {"pointerType": "touch"},
+            "actions": list(actions),
+        }
+    ]
+
+
+def build_swipe_actions(
+    waypoints: list[tuple[float, float]], total_duration_ms: int
+) -> list[dict[str, Any]]:
+    """W3C actions moving through ``waypoints`` in one continuous touch."""
+    if len(waypoints) < 2:
+        raise ValueError("swipe path requires at least two waypoints")
+    segments = len(waypoints) - 1
+    per_segment = max(1, total_duration_ms // segments)
+    sx, sy = waypoints[0]
+    actions: list[dict[str, Any]] = [
+        {"type": "pointerMove", "duration": 0, "x": int(sx), "y": int(sy)},
+        {"type": "pointerDown", "button": 0},
+    ]
+    for point in waypoints[1:]:
+        actions.append(
+            {
+                "type": "pointerMove",
+                "duration": per_segment,
+                "x": int(point[0]),
+                "y": int(point[1]),
+            }
+        )
+    ex, ey = waypoints[-1]
+    actions.append(
+        {"type": "pointerUp", "button": 0, "x": int(ex), "y": int(ey)}
+    )
+    return _pointer(*actions)
+
+
+def build_double_tap_actions(
+    x: float, y: float, interval_ms: int
+) -> list[dict[str, Any]]:
+    actions = [
+        {"type": "pointerMove", "duration": 0, "x": int(x), "y": int(y)},
+        {"type": "pointerDown", "button": 0},
+        {"type": "pointerUp", "button": 0},
+        {"type": "pause", "duration": max(1, interval_ms)},
+        {"type": "pointerDown", "button": 0},
+        {"type": "pointerUp", "button": 0},
+    ]
+    return _pointer(*actions)
+
+
+def perform_actions(client: Any, actions: list[dict[str, Any]]) -> None:
+    """Send a W3C actions payload via the Appium/Selenium command seam.
+
+    Import is lazy so the pure payload builders stay importable without
+    selenium on the path (used by unit tests).
+    """
+    from selenium.webdriver.remote.command import Command
+
+    client.execute(Command.W3C_ACTIONS, {"actions": actions})

driver/android_driver.py

@@ -87,6 +87,26 @@ class AndroidDriver(Driver):
         except Exception as exc:
             raise DriverError("tap failed") from exc
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        # Android ``mobile: longClickGesture`` uses a system-fixed hold
+        # duration; the caller's ``duration_ms`` is intentionally ignored
+        # (see design R2). Verify on real Appium against the running device
+        # driver — see plan task 2.
+        client = self._require_client()
+        try:
+            client.execute_script("mobile: longClickGesture", {"x": x, "y": y})
+        except Exception as exc:
+            raise DriverError("long press failed") from exc
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        from driver._w3c_actions import build_double_tap_actions, perform_actions
+
+        client = self._require_client()
+        try:
+            perform_actions(client, build_double_tap_actions(x, y, interval_ms))
+        except Exception as exc:
+            raise DriverError("double tap failed") from exc
+
     def swipe(
         self,
         start_x: float,
@@ -118,6 +138,17 @@ class AndroidDriver(Driver):
         except Exception as exc:
             raise DriverError("text input failed") from exc
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        from driver._w3c_actions import build_swipe_actions, perform_actions
+
+        client = self._require_client()
+        try:
+            perform_actions(client, build_swipe_actions(waypoints, duration_ms))
+        except Exception as exc:
+            raise DriverError("swipe_path failed") from exc
+
     def launch(self, app_id: str) -> None:
         client = self._require_client()
         try:

driver/base.py

@@ -27,6 +27,13 @@ class Driver(ABC):
     def tap(self, x: float, y: float) -> None:
         """Tap the screen at the given coordinates."""
 
+    @abstractmethod
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        """Press and hold at the given coordinates for ``duration_ms``.
+
+        Some platforms ignore ``duration_ms`` (fixed system hold duration).
+        """
+
     @abstractmethod
     def swipe(
         self,
@@ -38,6 +45,16 @@ class Driver(ABC):
     ) -> None:
         """Swipe between two screen coordinates."""
 
+    @abstractmethod
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        """Swipe through a sequence of waypoints in one continuous touch."""
+
+    @abstractmethod
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        """Tap twice at the given coordinates with ``interval_ms`` between."""
+
     @abstractmethod
     def input(self, text: str) -> None:
         """Input text into the current focused field."""

driver/wda_driver.py

@@ -77,6 +77,28 @@ class WDADriver(Driver):
         except Exception as exc:
             raise DriverError("tap failed") from exc
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        # ``mobile: touchAndHold`` is an XCUITest WDA endpoint; ``duration`` is
+        # in seconds (float). Verify on real Appium against the running device
+        # driver — see plan task 2.
+        client = self._require_client()
+        try:
+            client.execute_script(
+                "mobile: touchAndHold",
+                {"x": x, "y": y, "duration": duration_ms / 1000},
+            )
+        except Exception as exc:
+            raise DriverError("long press failed") from exc
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        from driver._w3c_actions import build_double_tap_actions, perform_actions
+
+        client = self._require_client()
+        try:
+            perform_actions(client, build_double_tap_actions(x, y, interval_ms))
+        except Exception as exc:
+            raise DriverError("double tap failed") from exc
+
     def swipe(
         self,
         start_x: float,
@@ -107,6 +129,17 @@ class WDADriver(Driver):
         except Exception as exc:
             raise DriverError("text input failed") from exc
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        from driver._w3c_actions import build_swipe_actions, perform_actions
+
+        client = self._require_client()
+        try:
+            perform_actions(client, build_swipe_actions(waypoints, duration_ms))
+        except Exception as exc:
+            raise DriverError("swipe_path failed") from exc
+
     def launch(self, app_id: str) -> None:
         client = self._require_client()
         try:

runtime/executor.py

@@ -113,10 +113,12 @@ def default_tool_registry(
 ) -> dict[str, ToolCallable]:
     from runtime.describe_screen_semantic import describe_screen_semantic
     from tools.describe_screen import describe_screen
+    from tools.double_tap import double_tap
     from tools.find_icon import find_icon, find_icon_on_screen
     from tools.find_text import find_text, find_text_on_screen
     from tools.input_text import input_text
     from tools.launch_app import launch_app, terminate_app
+    from tools.long_press import long_press
     from tools.screenshot import take_screenshot
     from tools.swipe import swipe
     from tools.tap import tap
@@ -126,6 +128,8 @@ def default_tool_registry(
         "take_screenshot": _bind_manager(take_screenshot, manager),
         "screenshot": _bind_manager(take_screenshot, manager),
         "tap": _bind_manager(tap, manager),
+        "long_press": _bind_manager(long_press, manager),
+        "double_tap": _bind_manager(double_tap, manager),
         "swipe": _bind_manager(swipe, manager),
         "input_text": _bind_manager(input_text, manager),
         "launch_app": _bind_manager(launch_app, manager),

runtime/planner_prompts.py

@@ -26,8 +26,10 @@ Before calling a tool, output a short text block (1-2 sentences):
 Keep this reflection concise and factual.
 
 You must then call exactly one tool:
-- One of `tap`, `swipe`, `input_text`, `launch_app`, `terminate_app` to make
-  progress toward the goal.
+- One of `tap`, `long_press`, `double_tap`, `swipe`, `input_text`,
+  `launch_app`, `terminate_app` to make progress toward the goal. Use
+  `long_press` for press-and-hold gestures (context menus, drag handles) and
+  `double_tap` for zoom/selection double-taps.
 - `finish_task` when the goal has been reached, or when it cannot be reached
   and no further action would help.
 

runtime/tool_specs.py

@@ -80,6 +80,40 @@ SWIPE_SPEC = ToolSpec(
     ),
 )
 
+LONG_PRESS_SPEC = ToolSpec(
+    name="long_press",
+    description="Press and hold a point on the screen, given in Scene pixel coordinates.",
+    parameters=_action_parameters(
+        required=["x", "y"],
+        properties={
+            "x": {"type": "number", "description": "X coordinate in Scene pixel space."},
+            "y": {"type": "number", "description": "Y coordinate in Scene pixel space."},
+            "duration_ms": {
+                "type": "integer",
+                "description": "Hold duration in milliseconds (ignored on some platforms).",
+                "default": 1200,
+            },
+        },
+    ),
+)
+
+DOUBLE_TAP_SPEC = ToolSpec(
+    name="double_tap",
+    description="Tap a point twice quickly, given in Scene pixel coordinates.",
+    parameters=_action_parameters(
+        required=["x", "y"],
+        properties={
+            "x": {"type": "number", "description": "X coordinate in Scene pixel space."},
+            "y": {"type": "number", "description": "Y coordinate in Scene pixel space."},
+            "interval_ms": {
+                "type": "integer",
+                "description": "Milliseconds between the two taps.",
+                "default": 80,
+            },
+        },
+    ),
+)
+
 INPUT_TEXT_SPEC = ToolSpec(
     name="input_text",
     description="Type text into the currently focused input field.",
@@ -145,6 +179,8 @@ FINISH_TASK_SPEC = ToolSpec(
 
 ACTION_TOOL_SPECS: list[ToolSpec] = [
     TAP_SPEC,
+    LONG_PRESS_SPEC,
+    DOUBLE_TAP_SPEC,
     SWIPE_SPEC,
     INPUT_TEXT_SPEC,
     LAUNCH_APP_SPEC,

tests/conftest.py

@@ -0,0 +1,11 @@
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def _humanize_disabled_by_default_in_tests(monkeypatch):
+    """Humanize defaults ON in production; tests default it OFF so existing
+    exact-coordinate assertions stay deterministic. Tests that want to
+    exercise humanize call ``monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")``
+    in their own body, which overrides this fixture (test body runs after
+    fixture setup)."""
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")

tests/fakes.py

@@ -51,6 +51,9 @@ class FakeDriver(Driver):
     def tap(self, x: float, y: float) -> None:
         self.calls.append(("tap", (x, y)))
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        self.calls.append(("long_press", (x, y, duration_ms)))
+
     def swipe(
         self,
         start_x: float,
@@ -61,6 +64,14 @@ class FakeDriver(Driver):
     ) -> None:
         self.calls.append(("swipe", (start_x, start_y, end_x, end_y, duration_ms)))
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        self.calls.append(("swipe_path", (tuple(waypoints), duration_ms)))
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        self.calls.append(("double_tap", (x, y, interval_ms)))
+
     def input(self, text: str) -> None:
         self.calls.append(("input", (text,)))
 

tests/test_android_driver.py

@@ -103,6 +103,9 @@ def test_connect_failure_raises_device_offline_and_clears_client() -> None:
         ("lock", {}),
         ("unlock", {}),
         ("disconnect", {}),
+        ("long_press", {"x": 1, "y": 2}),
+        ("swipe_path", {"waypoints": [(0, 0), (1, 1)], "duration_ms": 100}),
+        ("double_tap", {"x": 1, "y": 2}),
     ],
 )
 def test_operation_before_connect_raises_device_offline(
@@ -228,6 +231,39 @@ def test_home_uses_presskey_with_home_keycode() -> None:
     )
 
 
+def test_swipe_path_sends_w3c_actions() -> None:
+    from driver._w3c_actions import build_swipe_actions
+
+    driver = _connected_driver()
+    waypoints = [(0, 0), (50, 5), (100, 0)]
+    driver.swipe_path(waypoints, 600)
+    args = driver._client.execute.call_args.args
+    assert args[1] == {"actions": build_swipe_actions(waypoints, 600)}
+
+
+def test_swipe_path_wraps_exception_into_driver_error() -> None:
+    driver = _connected_driver()
+    driver._client.execute.side_effect = RuntimeError("boom")
+    with pytest.raises(DriverError):
+        driver.swipe_path([(0, 0), (1, 1)], 100)
+
+
+def test_double_tap_sends_w3c_actions() -> None:
+    from driver._w3c_actions import build_double_tap_actions
+
+    driver = _connected_driver()
+    driver.double_tap(15, 25, interval_ms=90)
+    args = driver._client.execute.call_args.args
+    assert args[1] == {"actions": build_double_tap_actions(15, 25, 90)}
+
+
+def test_double_tap_wraps_exception_into_driver_error() -> None:
+    driver = _connected_driver()
+    driver._client.execute.side_effect = RuntimeError("boom")
+    with pytest.raises(DriverError):
+        driver.double_tap(1, 2)
+
+
 def test_swipe_uses_drag_gesture_with_converted_speed() -> None:
     driver = _connected_driver()
     # 100px horizontal drag over 100ms => 100 / 0.1 = 1000 px/s
@@ -255,6 +291,21 @@ def test_swipe_near_zero_distance_uses_default_speed() -> None:
     assert speed > 0
 
 
+def test_long_press_uses_long_click_gesture() -> None:
+    driver = _connected_driver()
+    driver.long_press(30, 40, duration_ms=1500)
+    driver._client.execute_script.assert_called_once_with(
+        "mobile: longClickGesture", {"x": 30, "y": 40}
+    )
+
+
+def test_long_press_wraps_exception_into_driver_error() -> None:
+    driver = _connected_driver()
+    driver._client.execute_script.side_effect = RuntimeError("boom")
+    with pytest.raises(DriverError):
+        driver.long_press(1, 2)
+
+
 # --------------------------------------------------------------------------- #
 # build_android_driver_factory
 # --------------------------------------------------------------------------- #

tests/test_describe_screen.py

@@ -33,6 +33,9 @@ class TreeFailingDriver(Driver):
     def tap(self, x: float, y: float) -> None:
         return None
 
+    def long_press(self, x: float, y: float, duration_ms: int = 1200) -> None:
+        return None
+
     def swipe(
         self,
         start_x: float,
@@ -43,6 +46,14 @@ class TreeFailingDriver(Driver):
     ) -> None:
         return None
 
+    def swipe_path(
+        self, waypoints: list[tuple[float, float]], duration_ms: int
+    ) -> None:
+        return None
+
+    def double_tap(self, x: float, y: float, interval_ms: int = 80) -> None:
+        return None
+
     def input(self, text: str) -> None:
         return None
 

tests/test_double_tap.py

@@ -0,0 +1,38 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tests.fakes import FakeDriver
+
+
+def _connected(driver: FakeDriver) -> DeviceManager:
+    manager = DeviceManager()
+    manager.register_device("phone", lambda: driver)
+    manager.connect("phone", max_retries=1)
+    return manager
+
+
+def test_double_tap_disabled_passes_exact(monkeypatch):
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")
+    from tools.double_tap import double_tap
+
+    driver = FakeDriver()
+    res = double_tap(50, 60, interval_ms=90, manager=_connected(driver))
+    assert driver.calls[-1] == ("double_tap", (50, 60, 90))
+    assert res["action"] == "double_tap"
+
+
+def test_double_tap_enabled_jitters_within_radius(monkeypatch):
+    import random
+
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")
+    from tools.humanize import set_rng
+    from tools.double_tap import double_tap
+
+    set_rng(random.Random(8))
+    try:
+        driver = FakeDriver()
+        double_tap(50, 60, manager=_connected(driver))
+    finally:
+        set_rng(None)
+    px, py, _ = driver.calls[-1][1]
+    assert abs(px - 50) <= 5.0 and abs(py - 60) <= 5.0

tests/test_executor.py

@@ -52,3 +52,11 @@ def test_executor_keeps_action_metadata_out_of_device_tool_arguments() -> None:
     assert (
         result.to_dict()["step"]["expected_outcome"] == "The settings page is visible."
     )
+
+
+def test_default_registry_dispatches_long_press_and_double_tap():
+    from runtime.executor import default_tool_registry
+
+    registry = default_tool_registry()
+    assert callable(registry["long_press"])
+    assert callable(registry["double_tap"])

tests/test_humanize.py

@@ -0,0 +1,109 @@
+from __future__ import annotations
+
+import math
+import random
+
+
+from tools.humanize import (
+    HumanizeConfig,
+    jitter_duration,
+    jitter_point,
+    load_humanize_config,
+    set_rng,
+    swipe_waypoints,
+)
+
+
+def test_jitter_point_stays_within_radius():
+    rng = random.Random(42)
+    for _ in range(500):
+        x, y = jitter_point(100, 200, radius=5.0, rng=rng)
+        assert math.hypot(x - 100, y - 200) <= 5.0
+
+
+def test_jitter_point_centered_on_input():
+    rng = random.Random(0)
+    xs = [jitter_point(0, 0, radius=4.0, rng=rng)[0] for _ in range(4000)]
+    assert abs(sum(xs) / len(xs)) < 0.3
+
+
+def test_jitter_point_concentrated_near_target():
+    """Regression: jitter must be polar-Gaussian (concentrated near target),
+    not uniform-on-circle (all points at exactly ``radius``).
+
+    For a folded Gaussian with sigma=radius/2, the expected mean distance is
+    ~0.8*sigma ~= 0.4*radius. Using ``< 0.7*radius`` gives a safe margin that
+    fails the previous reprojection bug (mean distance == radius exactly).
+    """
+    rng = random.Random(1234)
+    radius = 5.0
+    n = 5000
+    distances = [
+        math.hypot(x - 0.0, y - 0.0)
+        for x, y in (jitter_point(0.0, 0.0, radius=radius, rng=rng) for _ in range(n))
+    ]
+    mean_distance = sum(distances) / n
+    assert mean_distance < radius * 0.7, (
+        f"mean distance {mean_distance:.3f} is too large; jitter looks like "
+        "uniform-on-circle rather than polar-Gaussian"
+    )
+
+
+def test_jitter_duration_within_spread():
+    rng = random.Random(3)
+    for _ in range(200):
+        v = jitter_duration(1000, spread=0.15, rng=rng)
+        assert 850 <= v <= 1150
+
+
+def test_jitter_duration_never_zero():
+    rng = random.Random(9)
+    for _ in range(100):
+        assert jitter_duration(1, spread=0.5, rng=rng) >= 1
+
+
+def test_swipe_waypoints_endpoints_exact_interior_offset():
+    rng = random.Random(7)
+    pts = swipe_waypoints((0, 0), (100, 0), curvature=0.2, n=4, rng=rng)
+    assert pts[0] == (0, 0)
+    assert pts[-1] == (100, 0)
+    assert len(pts) == 6  # start + 4 interior + end
+    assert any(abs(p[1]) > 1e-6 for p in pts[1:-1])
+
+
+def test_swipe_waypoints_degenerate_short_path_returns_two_points():
+    rng = random.Random(1)
+    pts = swipe_waypoints((5, 5), (5, 5), curvature=0.2, n=8, rng=rng)
+    assert pts == [(5, 5), (5, 5)]
+
+
+def test_load_config_defaults_when_unset():
+    cfg = load_humanize_config(env={})
+    assert cfg == HumanizeConfig()
+
+
+def test_load_config_disabled():
+    cfg = load_humanize_config(env={"APEX_HUMANIZE_ENABLED": "false"})
+    assert cfg.enabled is False
+
+
+def test_load_config_overrides():
+    cfg = load_humanize_config(
+        env={
+            "APEX_HUMANIZE_TAP_RADIUS_PX": "9",
+            "APEX_HUMANIZE_SWIPE_CURVATURE": "0.3",
+            "APEX_HUMANIZE_SWIPE_WAYPOINTS": "12",
+            "APEX_HUMANIZE_DURATION_SPREAD": "0.2",
+        }
+    )
+    assert cfg.tap_radius_px == 9.0
+    assert cfg.swipe_curvature == 0.3
+    assert cfg.swipe_waypoints == 12
+    assert cfg.duration_spread == 0.2
+
+
+def test_set_rng_makes_output_reproducible():
+    set_rng(random.Random(99))
+    a = jitter_point(0, 0, radius=5.0, rng=random.Random(99))
+    set_rng(None)  # reset to default rng
+    assert isinstance(a, tuple) and len(a) == 2

tests/test_long_press.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tests.fakes import FakeDriver
+
+
+def _connected(driver: FakeDriver) -> DeviceManager:
+    manager = DeviceManager()
+    manager.register_device("phone", lambda: driver)
+    manager.connect("phone", max_retries=1)
+    return manager
+
+
+def test_long_press_disabled_passes_exact_coords(monkeypatch):
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")
+    from tools.long_press import long_press
+
+    driver = FakeDriver()
+    res = long_press(100, 200, duration_ms=1500, manager=_connected(driver))
+    assert driver.calls[-1] == ("long_press", (100, 200, 1500))
+    assert res["action"] == "long_press"
+    assert res["duration_ms"] == 1500
+
+
+def test_long_press_enabled_jitters_within_radius(monkeypatch):
+    import random
+
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")
+    from tools.humanize import set_rng
+    from tools.long_press import long_press
+
+    set_rng(random.Random(5))
+    try:
+        driver = FakeDriver()
+        long_press(100, 200, duration_ms=1500, manager=_connected(driver))
+    finally:
+        set_rng(None)
+    name, args = driver.calls[-1]
+    assert name == "long_press"
+    px, py, _ = args
+    assert abs(px - 100) <= 5.0 and abs(py - 200) <= 5.0

tests/test_swipe_humanize.py

@@ -0,0 +1,41 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tests.fakes import FakeDriver
+
+
+def _connected(driver: FakeDriver) -> DeviceManager:
+    manager = DeviceManager()
+    manager.register_device("phone", lambda: driver)
+    manager.connect("phone", max_retries=1)
+    return manager
+
+
+def test_swipe_disabled_uses_two_point_swipe(monkeypatch):
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")
+    from tools.swipe import swipe
+
+    driver = FakeDriver()
+    swipe(0, 0, 100, 0, duration_ms=500, manager=_connected(driver))
+    assert driver.calls[-1] == ("swipe", (0, 0, 100, 0, 500))
+
+
+def test_swipe_enabled_uses_curved_swipe_path(monkeypatch):
+    import random
+
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")
+    from tools.humanize import set_rng
+    from tools.swipe import swipe
+
+    set_rng(random.Random(21))
+    try:
+        driver = FakeDriver()
+        swipe(0, 0, 100, 0, duration_ms=500, manager=_connected(driver))
+    finally:
+        set_rng(None)
+    name, args = driver.calls[-1]
+    assert name == "swipe_path"
+    waypoints, _dms = args
+    assert waypoints[0] == (0, 0)
+    assert waypoints[-1] == (100, 0)
+    assert len(waypoints) > 2  # curved: more than just endpoints

tests/test_tap_humanize.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tests.fakes import FakeDriver
+
+
+def _connected(driver: FakeDriver) -> DeviceManager:
+    manager = DeviceManager()
+    manager.register_device("phone", lambda: driver)
+    manager.connect("phone", max_retries=1)
+    return manager
+
+
+def test_tap_default_off_in_tests_passes_exact(monkeypatch):
+    # Autouse conftest fixture sets APEX_HUMANIZE_ENABLED=false; reaffirm here.
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "false")
+    from tools.tap import tap
+
+    driver = FakeDriver()
+    tap(10, 20, manager=_connected(driver))
+    assert driver.calls[-1] == ("tap", (10, 20))
+
+
+def test_tap_enabled_jitters_within_radius(monkeypatch):
+    import random
+
+    monkeypatch.setenv("APEX_HUMANIZE_ENABLED", "true")
+    from tools.humanize import set_rng
+    from tools.tap import tap
+
+    set_rng(random.Random(11))
+    try:
+        driver = FakeDriver()
+        tap(10, 20, manager=_connected(driver))
+    finally:
+        set_rng(None)
+    px, py = driver.calls[-1][1]
+    assert abs(px - 10) <= 5.0 and abs(py - 20) <= 5.0
+    assert (px, py) != (10, 20), "jitter must move the point"
+
+    # second call with fresh seed must differ from first
+    set_rng(random.Random(12))
+    try:
+        driver2 = FakeDriver()
+        tap(10, 20, manager=_connected(driver2))
+    finally:
+        set_rng(None)
+    px2, py2 = driver2.calls[-1][1]
+    assert (px2, py2) != (10, 20)
+    assert (px2, py2) != (px, py), "consecutive calls with different seeds must produce different jitter"

tests/test_tool_specs.py

@@ -16,8 +16,8 @@ from runtime.tool_specs import (
 def test_action_tool_specs_has_five_entries_and_all_tool_specs_adds_finish_task() -> (
     None
 ):
-    assert len(ACTION_TOOL_SPECS) == 5
-    assert len(ALL_TOOL_SPECS) == 6
+    assert len(ACTION_TOOL_SPECS) == 7
+    assert len(ALL_TOOL_SPECS) == 8
     assert ALL_TOOL_SPECS == [*ACTION_TOOL_SPECS, FINISH_TASK_SPEC]
     assert FINISH_TASK_SPEC not in ACTION_TOOL_SPECS
 
@@ -110,3 +110,28 @@ def test_finish_task_spec_requires_success_and_reason() -> None:
 def test_no_tool_spec_declares_device_id() -> None:
     for spec in ALL_TOOL_SPECS:
         assert "device_id" not in spec.parameters["properties"]
+
+
+def test_long_press_and_double_tap_are_action_tools():
+    from runtime.tool_specs import ACTION_TOOL_NAMES
+
+    assert "long_press" in ACTION_TOOL_NAMES
+    assert "double_tap" in ACTION_TOOL_NAMES
+
+
+def test_long_press_spec_has_duration_with_default():
+    from runtime.tool_specs import LONG_PRESS_SPEC
+
+    props = LONG_PRESS_SPEC.parameters["properties"]
+    assert props["x"]["type"] == "number"
+    assert props["y"]["type"] == "number"
+    assert props["duration_ms"]["default"] == 1200
+    # purpose/expected_outcome are required metadata
+    assert "purpose" in LONG_PRESS_SPEC.parameters["required"]
+
+
+def test_double_tap_spec_has_interval_with_default():
+    from runtime.tool_specs import DOUBLE_TAP_SPEC
+
+    props = DOUBLE_TAP_SPEC.parameters["properties"]
+    assert props["interval_ms"]["default"] == 80

tests/test_w3c_actions.py

@@ -0,0 +1,53 @@
+from __future__ import annotations
+
+import pytest
+
+from driver._w3c_actions import (
+    build_double_tap_actions,
+    build_swipe_actions,
+)
+
+
+def test_build_swipe_actions_shape_and_duration_split():
+    actions = build_swipe_actions([(0, 0), (50, 10), (100, 0)], 600)
+    assert len(actions) == 1
+    pointer = actions[0]
+    assert pointer["type"] == "pointer"
+    assert pointer["id"] == "finger1"
+    assert pointer["parameters"]["pointerType"] == "touch"
+    seq = pointer["actions"]
+    types = [a["type"] for a in seq]
+    assert types == [
+        "pointerMove",
+        "pointerDown",
+        "pointerMove",
+        "pointerMove",
+        "pointerUp",
+    ]
+    # 600ms over 2 segments => 300ms per move after pointerDown
+    moves_after_down = [a for a in seq if a["type"] == "pointerMove"][1:]
+    assert all(m["duration"] == 300 for m in moves_after_down)
+    assert seq[0]["x"] == 0 and seq[0]["y"] == 0
+    assert seq[-1]["x"] == 100 and seq[-1]["y"] == 0
+
+
+def test_build_swipe_actions_requires_two_waypoints():
+    with pytest.raises(ValueError):
+        build_swipe_actions([(1, 1)], 100)
+
+
+def test_build_double_tap_actions_shape():
+    actions = build_double_tap_actions(10, 20, interval_ms=80)
+    seq = actions[0]["actions"]
+    types = [a["type"] for a in seq]
+    assert types == [
+        "pointerMove",
+        "pointerDown",
+        "pointerUp",
+        "pause",
+        "pointerDown",
+        "pointerUp",
+    ]
+    pause = next(a for a in seq if a["type"] == "pause")
+    assert pause["duration"] == 80
+    assert seq[0]["x"] == 10 and seq[0]["y"] == 20

tools/double_tap.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tools._device import get_driver
+from tools.humanize import get_rng, jitter_duration, jitter_point, load_humanize_config
+
+
+def double_tap(
+    x: float,
+    y: float,
+    *,
+    interval_ms: int = 80,
+    device_id: str | None = None,
+    manager: DeviceManager | None = None,
+) -> dict[str, object]:
+    cfg = load_humanize_config()
+    px, py = x, y
+    interval = interval_ms
+    if cfg.enabled:
+        rng = get_rng()
+        px, py = jitter_point(x, y, radius=cfg.tap_radius_px, rng=rng)
+        interval = jitter_duration(interval_ms, spread=cfg.duration_spread, rng=rng)
+    get_driver(device_id, manager=manager).double_tap(px, py, interval)
+    return {
+        "ok": True,
+        "action": "double_tap",
+        "x": px,
+        "y": py,
+        "interval_ms": interval,
+    }

tools/humanize.py

@@ -0,0 +1,160 @@
+from __future__ import annotations
+
+import math
+import os
+import random
+from collections.abc import Mapping
+from dataclasses import dataclass
+
+ENABLED_ENV = "APEX_HUMANIZE_ENABLED"
+TAP_RADIUS_ENV = "APEX_HUMANIZE_TAP_RADIUS_PX"
+SWIPE_CURVATURE_ENV = "APEX_HUMANIZE_SWIPE_CURVATURE"
+SWIPE_WAYPOINTS_ENV = "APEX_HUMANIZE_SWIPE_WAYPOINTS"
+DURATION_SPREAD_ENV = "APEX_HUMANIZE_DURATION_SPREAD"
+
+DEFAULT_TAP_RADIUS_PX = 5.0
+DEFAULT_SWIPE_CURVATURE = 0.15
+DEFAULT_SWIPE_WAYPOINTS = 8
+DEFAULT_DURATION_SPREAD = 0.15
+
+
+@dataclass(frozen=True)
+class HumanizeConfig:
+    enabled: bool = True
+    tap_radius_px: float = DEFAULT_TAP_RADIUS_PX
+    swipe_curvature: float = DEFAULT_SWIPE_CURVATURE
+    swipe_waypoints: int = DEFAULT_SWIPE_WAYPOINTS
+    duration_spread: float = DEFAULT_DURATION_SPREAD
+
+
+def load_humanize_config(env: Mapping[str, str] | None = None) -> HumanizeConfig:
+    if env is None:
+        values: Mapping[str, str] = os.environ
+    else:
+        values = env
+    return HumanizeConfig(
+        enabled=_parse_bool(values.get(ENABLED_ENV), default=True),
+        tap_radius_px=_parse_float(values.get(TAP_RADIUS_ENV), DEFAULT_TAP_RADIUS_PX),
+        swipe_curvature=_parse_float(
+            values.get(SWIPE_CURVATURE_ENV), DEFAULT_SWIPE_CURVATURE
+        ),
+        swipe_waypoints=_parse_int(
+            values.get(SWIPE_WAYPOINTS_ENV), DEFAULT_SWIPE_WAYPOINTS
+        ),
+        duration_spread=_parse_float(
+            values.get(DURATION_SPREAD_ENV), DEFAULT_DURATION_SPREAD
+        ),
+    )
+
+
+def _parse_bool(value: str | None, *, default: bool) -> bool:
+    if value is None:
+        return default
+    return value.strip().lower() in {"1", "true", "yes", "on", "enabled"}
+
+
+def _parse_float(value: str | None, default: float) -> float:
+    if value is None:
+        return default
+    try:
+        return float(value)
+    except ValueError:
+        return default
+
+
+def _parse_int(value: str | None, default: int) -> int:
+    if value is None:
+        return default
+    try:
+        return int(value)
+    except ValueError:
+        return default
+
+
+_rng: random.Random | None = None
+
+
+def get_rng() -> random.Random:
+    global _rng
+    if _rng is None:
+        _rng = random.Random()
+    return _rng
+
+
+def set_rng(rng: random.Random | None) -> None:
+    """Inject a seeded rng (tests). Pass ``None`` to reset to the default."""
+    global _rng
+    _rng = rng
+
+
+def jitter_point(
+    x: float, y: float, *, radius: float, rng: random.Random
+) -> tuple[float, float]:
+    """Polar-Gaussian offset around the target.
+
+    Magnitude is drawn from a folded Gaussian with sigma=radius/2, then
+    capped at ``radius``. The angle is uniform on [0, 2*pi). This concentrates
+    jittered points near the target rather than uniformly on the circle edge,
+    matching how humans tap close to (but not exactly on) a button center.
+    """
+    r = abs(rng.gauss(0.0, radius / 2.0))
+    r = min(r, radius)
+    angle = rng.uniform(0, 2 * math.pi)
+    dx = r * math.cos(angle)
+    dy = r * math.sin(angle)
+    # Guard against cos/sin FP drift pushing distance slightly past radius.
+    fd = math.hypot(dx, dy)
+    if fd > radius:
+        scale = radius / fd
+        dx *= scale
+        dy *= scale
+    # Final clamp: hypot of the returned offset may overshoot by ulps; tighten
+    # to ``radius - 1e-10`` to keep ``<= radius`` after subtraction/hypot.
+    fx = x + dx
+    fy = y + dy
+    fd_final = math.hypot(fx - x, fy - y)
+    if fd_final > radius:
+        scale = (radius - 1e-10) / fd_final
+        fx = x + dx * scale
+        fy = y + dy * scale
+    return (fx, fy)
+
+
+def jitter_duration(
+    value_ms: int, *, spread: float, rng: random.Random
+) -> int:
+    """Uniform jitter within ``value_ms * spread``; floored at 1ms."""
+    delta = value_ms * spread
+    return max(1, int(value_ms + rng.uniform(-delta, delta)))
+
+
+def swipe_waypoints(
+    start: tuple[float, float],
+    end: tuple[float, float],
+    *,
+    curvature: float,
+    n: int,
+    rng: random.Random,
+) -> list[tuple[float, float]]:
+    """Return start + ``n`` interior + end points. Interior points deviate
+    perpendicular to the path by gaussian noise scaled to ``curvature *
+    path_length``. Degenerate (zero-length) path returns ``[start, end]``."""
+    sx, sy = start
+    ex, ey = end
+    dx = ex - sx
+    dy = ey - sy
+    length = math.hypot(dx, dy)
+    if length < 1e-6 or n <= 0:
+        return [start, end]
+    ux, uy = dx / length, dy / length
+    px, py = -uy, ux  # perpendicular unit vector
+    amplitude = length * curvature
+    points: list[tuple[float, float]] = [start]
+    for i in range(1, n + 1):
+        t = i / (n + 1)
+        bx = sx + dx * t
+        by = sy + dy * t
+        offset = rng.gauss(0.0, amplitude / 2.0)
+        points.append((bx + px * offset, by + py * offset))
+    points.append(end)
+    return points

tools/long_press.py

@@ -0,0 +1,29 @@
+from __future__ import annotations
+
+from device.manager import DeviceManager
+from tools._device import get_driver
+from tools.humanize import (
+    get_rng,
+    jitter_duration,
+    jitter_point,
+    load_humanize_config,
+)
+
+
+def long_press(
+    x: float,
+    y: float,
+    *,
+    duration_ms: int = 1200,
+    device_id: str | None = None,
+    manager: DeviceManager | None = None,
+) -> dict[str, object]:
+    cfg = load_humanize_config()
+    px, py = x, y
+    dms = duration_ms
+    if cfg.enabled:
+        rng = get_rng()
+        px, py = jitter_point(x, y, radius=cfg.tap_radius_px, rng=rng)
+        dms = jitter_duration(duration_ms, spread=cfg.duration_spread, rng=rng)
+    get_driver(device_id, manager=manager).long_press(px, py, dms)
+    return {"ok": True, "action": "long_press", "x": px, "y": py, "duration_ms": dms}

tools/swipe.py

@@ -2,6 +2,12 @@ from __future__ import annotations
 
 from device.manager import DeviceManager
 from tools._device import get_driver
+from tools.humanize import (
+    get_rng,
+    jitter_duration,
+    load_humanize_config,
+    swipe_waypoints,
+)
 
 
 def swipe(
@@ -14,12 +20,28 @@ def swipe(
     device_id: str | None = None,
     manager: DeviceManager | None = None,
 ) -> dict[str, object]:
+    cfg = load_humanize_config()
+    if cfg.enabled:
+        rng = get_rng()
+        dms = jitter_duration(duration_ms, spread=cfg.duration_spread, rng=rng)
+        waypoints = swipe_waypoints(
+            (start_x, start_y),
+            (end_x, end_y),
+            curvature=cfg.swipe_curvature,
+            n=cfg.swipe_waypoints,
+            rng=rng,
+        )
+        get_driver(device_id, manager=manager).swipe_path(waypoints, dms)
+        return {
+            "ok": True,
+            "action": "swipe",
+            "start": {"x": start_x, "y": start_y},
+            "end": {"x": end_x, "y": end_y},
+            "waypoints": waypoints,
+            "duration_ms": dms,
+        }
     get_driver(device_id, manager=manager).swipe(
-        start_x,
-        start_y,
-        end_x,
-        end_y,
-        duration_ms,
+        start_x, start_y, end_x, end_y, duration_ms
     )
     return {
         "ok": True,
@@ -27,4 +49,4 @@ def swipe(
         "start": {"x": start_x, "y": start_y},
         "end": {"x": end_x, "y": end_y},
         "duration_ms": duration_ms,
-    }
+    }

tools/tap.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from device.manager import DeviceManager
 from tools._device import get_driver
+from tools.humanize import get_rng, jitter_point, load_humanize_config
 
 
 def tap(
@@ -11,5 +12,9 @@ def tap(
     device_id: str | None = None,
     manager: DeviceManager | None = None,
 ) -> dict[str, object]:
-    get_driver(device_id, manager=manager).tap(x, y)
-    return {"ok": True, "action": "tap", "x": x, "y": y}
+    cfg = load_humanize_config()
+    px, py = x, y
+    if cfg.enabled:
+        px, py = jitter_point(x, y, radius=cfg.tap_radius_px, rng=get_rng())
+    get_driver(device_id, manager=manager).tap(px, py)
+    return {"ok": True, "action": "tap", "x": px, "y": py}