some fixes

data_acq_and_processing/processing/locator/src/payload_builder.cpp

@@ -192,18 +192,22 @@ auto build_payload_json(
         });
     }
 
-    // Fix #48: stamp every packet with a numeric build-time generation
-    // (`gen`, epoch ms). A cached snapshot re-sent verbatim to a new client
-    // keeps its original `gen`, so a consumer can compute the snapshot's true
-    // age and flag a stalled pipeline (which `tim` alone cannot express, having
-    // no date and rolling over at midnight).
-    const Json root{
+    Json root{
         {"ver", protocol_version},
         {"tim", format_timestamp_now()},
-        {"gen", epoch_millis_now()},
         {"sts", status},
         {"obs", std::move(obs_array)},
     };
+
+    // `gen` is a build-time generation stamp (epoch ms) that lets a consumer compute
+    // a packet's true age and flag a cached/stalled snapshot — something `tim` cannot
+    // express, having no date and rolling over at midnight. It is currently NOT sent;
+    // set this flag to true to re-enable it (epoch_millis_now() is kept ready for that).
+    constexpr bool kEmitGenerationStamp = false;
+    if (kEmitGenerationStamp) {
+        root["gen"] = epoch_millis_now();
+    }
+
     return root.dump();
 }
 

locator_test_client.py

@@ -6,7 +6,7 @@ import threading
 import time
 from typing import Any, Dict, Tuple
 
-HOST = "192.168.8.2"
+HOST = "192.168.2.6"
 PORT = 8888
 CLIENT_DEVICE_ID = 0
 MIN_TEST_VLC = 5.0

python_app/gui/controllers/app_window_config/live_processing_mixin.py

@@ -3,7 +3,14 @@
 from __future__ import annotations
 
 from PyQt6.QtCore import QSignalBlocker
-from PyQt6.QtWidgets import QCheckBox, QComboBox, QDoubleSpinBox, QLineEdit, QSpinBox
+from PyQt6.QtWidgets import (
+    QCheckBox,
+    QComboBox,
+    QDoubleSpinBox,
+    QLineEdit,
+    QPlainTextEdit,
+    QSpinBox,
+)
 
 from python_app.gui.runtime.constraints import validate_processing_mode_constraints
 from python_app.orchestration.live_processing_config import ProcessingLiveConfig
@@ -63,6 +70,10 @@ _WEB_LIVE_SCHEMA = [
     ("gpr_snr_thresh", "Detection", ("legacy_gpr",), _attr("_legacy_gpr_snr_thresh")),
     ("gpr_snr_comp_max", "Detection", ("legacy_gpr",), _attr("_legacy_gpr_snr_comp_max")),
     ("legacy_gpr_min_visible_pair_count", "Detection", ("legacy_gpr",), _attr("_legacy_gpr_min_visible_pair_count")),
+    ("gpr_visible_x_min_m", "Visible window", _GPR_MODES, _dual("_gpr_visible_x_min_m", "_legacy_gpr_visible_x_min_m")),
+    ("gpr_visible_x_max_m", "Visible window", _GPR_MODES, _dual("_gpr_visible_x_max_m", "_legacy_gpr_visible_x_max_m")),
+    ("gpr_visible_z_min_m", "Visible window", _GPR_MODES, _dual("_gpr_visible_z_min_m", "_legacy_gpr_visible_z_min_m")),
+    ("gpr_visible_z_max_m", "Visible window", _GPR_MODES, _dual("_gpr_visible_z_max_m", "_legacy_gpr_visible_z_max_m")),
     ("gpr_look_angle_deg", "Motion", ("legacy_gpr",), _attr("_legacy_gpr_look_angle_deg")),
     ("gpr_apply_freq_phase_correction", "Motion", ("legacy_gpr",), _attr("_legacy_gpr_apply_freq_phase_correction")),
     ("gpr_reference_mode", "Motion", ("legacy_gpr",), _attr("_legacy_gpr_reference_mode")),
@@ -71,6 +82,50 @@ _WEB_LIVE_SCHEMA = [
 ]
 _WEB_LIVE_GETTERS = {field: getter for field, _group, _modes, getter in _WEB_LIVE_SCHEMA}
 
+# ProcessingLiveConfig fields that are NOT backed by a settings widget and are set
+# directly in `_live_processing_config`: the fixed acquisition channels, the runtime
+# command fields, and a constant default. Together with the schema's fields these must
+# cover every config field (guarded by a unit test), so the desktop config and the web
+# form can never drift apart.
+_NON_WIDGET_LIVE_FIELDS = frozenset({
+    "pass_through_channel",
+    "bscan_channel",
+    "reprocess_current_result",
+    "history_command",
+    "history_command_seq",
+    "gpr_direction_sign",
+})
+
+# Display toggles: GUI-only rendering choices (kept in the GUI profile, not the live
+# config). They apply immediately through the same redraw as a live edit but write
+# nothing to processing_live.json.
+_WEB_DISPLAY_SCHEMA = [
+    ("render_mode", "Display", _GPR_MODES, _dual("_gpr_render_mode", "_legacy_gpr_render_mode")),
+    ("subtract_mean_ascan", "Display", ("bscan",), _attr("_bscan_subtract_mean_ascan")),
+    ("combo_filter", "Display", ("pass_through",), _attr("_pass_through_combo_filter_input")),
+]
+
+# Stable run_config fields (GPR medium and antenna geometry). They live in run_config and
+# take effect only when the pipeline (re)starts — not hot-reloaded — so the web marks them
+# "applies on Start" and editing them just updates the widget for the next start.
+_WEB_STABLE_SCHEMA = [
+    ("relative_permittivity", "Geometry & medium", _GPR_MODES, _attr("_gpr_relative_permittivity")),
+    ("tx_geometry", "Geometry & medium", _GPR_MODES, _attr("_gpr_tx_geometry_input")),
+    ("rx_geometry", "Geometry & medium", _GPR_MODES, _attr("_gpr_rx_geometry_input")),
+]
+
+# Every field the web form renders and may write back, across all three categories.
+_WEB_FORM_GETTERS = {
+    field: getter
+    for source in (_WEB_LIVE_SCHEMA, _WEB_DISPLAY_SCHEMA, _WEB_STABLE_SCHEMA)
+    for field, _group, _modes, getter in source
+}
+
+
+def web_apply_field_names() -> frozenset[str]:
+    """Return the field names a web client may apply (form fields plus runtime commands)."""
+    return frozenset(_WEB_FORM_GETTERS) | {"history_command"}
+
 
 def _web_field_schema(field: str, group: str, widget) -> dict | None:
     """Describe one widget for the web form (type, options/range, value, enabled)."""
@@ -87,27 +142,58 @@ def _web_field_schema(field: str, group: str, widget) -> dict | None:
         return {**base, "kind": "float", "value": float(widget.value()),
                 "min": float(widget.minimum()), "max": float(widget.maximum()),
                 "step": float(widget.singleStep()), "decimals": int(widget.decimals())}
+    if isinstance(widget, QPlainTextEdit):
+        return {**base, "kind": "textarea", "value": widget.toPlainText()}
     if isinstance(widget, QLineEdit):
         return {**base, "kind": "text", "value": widget.text()}
     return None
 
 
+def _read_live_widget_value(widget):
+    """Return a widget's current value for the live config, by widget type.
+
+    Shares the same type dispatch as the web schema/setter, so the desktop config
+    build and the browser form read every widget identically.
+    """
+    if isinstance(widget, QComboBox):
+        return widget.currentText()
+    if isinstance(widget, QCheckBox):
+        return bool(widget.isChecked())
+    if isinstance(widget, QSpinBox):
+        return int(widget.value())
+    if isinstance(widget, QDoubleSpinBox):
+        return float(widget.value())
+    if isinstance(widget, QLineEdit):
+        return widget.text()
+    raise TypeError(f"Unsupported live-settings widget: {type(widget).__name__}")
+
+
 def _build_web_settings_schema(window) -> list[dict]:
-    """Build the settings schema for the active mode straight from the Qt widgets."""
+    """Build the settings schema for the active mode straight from the Qt widgets.
+
+    Covers all three widget categories — live settings, GUI display toggles, and stable
+    run_config fields — so the web form shows exactly what the desktop processing panel
+    does. Stable fields are tagged ``applies_on_start`` (they take effect on the next run).
+    """
     mode = window._processing_mode.currentText()
     schema: list[dict] = []
-    for field, group, modes, getter in _WEB_LIVE_SCHEMA:
+    for source, extra in (
+        (_WEB_LIVE_SCHEMA, {}),
+        (_WEB_DISPLAY_SCHEMA, {}),
+        (_WEB_STABLE_SCHEMA, {"applies_on_start": True}),
+    ):
+        for field, group, modes, getter in source:
             if modes is not None and mode not in modes:
                 continue
             entry = _web_field_schema(field, group, getter(window))
             if entry is not None:
-            schema.append(entry)
+                schema.append({**entry, **extra})
     return schema
 
 
 def _set_web_live_field(window, field: str, value) -> None:
-    """Write one web value into the desktop widget that feeds ``field``."""
-    getter = _WEB_LIVE_GETTERS.get(field)
+    """Write one web value into the desktop widget that feeds ``field`` (any category)."""
+    getter = _WEB_FORM_GETTERS.get(field)
     if getter is None:
         return
     widget = getter(window)
@@ -119,6 +205,8 @@ def _set_web_live_field(window, field: str, value) -> None:
         widget.setValue(int(float(value)))
     elif isinstance(widget, QDoubleSpinBox):
         widget.setValue(float(value))
+    elif isinstance(widget, QPlainTextEdit):
+        widget.setPlainText(str(value))
     elif isinstance(widget, QLineEdit):
         widget.setText(",".join(str(int(v)) for v in value) if isinstance(value, list) else str(value))
 
@@ -145,82 +233,46 @@ class AppWindowLiveProcessingMixin:
         history_command: str = "none",
         reprocess_current_result: bool = True,
     ) -> ProcessingLiveConfig:
-        """Build live processing config from current processing widgets."""
+        """Build the live processing config from the current processing widgets.
+
+        Widget-backed fields are read through the single ``_WEB_LIVE_SCHEMA`` map — the
+        same source the embedded web form uses — so the desktop config and the browser
+        form can never expose different settings. The few fields that need
+        post-processing (position lists, the ordered pass-through Y range, the
+        normalized visible window) or are not widget-backed (the fixed acquisition
+        channels, the history command, the reprocess flag) are applied explicitly here.
+        """
         self._sync_bscan_frequency_limits_with_radar()
         self._sync_gpr_frequency_limits_with_radar()
-        mode = self._processing_mode.currentText()
-        if mode == "legacy_gpr":
-            gpr_input_positions_text = self._legacy_gpr_input_positions_input.text()
-            gpr_output_positions_text = self._legacy_gpr_output_positions_input.text()
-            gpr_min_depth_m = float(self._legacy_gpr_min_depth_m.value())
-            gpr_max_depth_m = float(self._legacy_gpr_max_depth_m.value())
-            gpr_start_freq_mhz = float(self._legacy_gpr_start_freq_mhz.value())
-            gpr_stop_freq_mhz = float(self._legacy_gpr_stop_freq_mhz.value())
-            gpr_background_enabled = bool(self._legacy_gpr_background_subtract_enabled.isChecked())
-            gpr_background_mean_count = int(self._legacy_gpr_background_mean_count.value())
-        else:
-            gpr_input_positions_text = self._gpr_input_positions_input.text()
-            gpr_output_positions_text = self._gpr_output_positions_input.text()
-            gpr_min_depth_m = float(self._gpr_min_depth_m.value())
-            gpr_max_depth_m = float(self._gpr_max_depth_m.value())
-            gpr_start_freq_mhz = float(self._gpr_start_freq_mhz.value())
-            gpr_stop_freq_mhz = float(self._gpr_stop_freq_mhz.value())
-            gpr_background_enabled = bool(self._gpr_background_subtract_enabled.isChecked())
-            gpr_background_mean_count = int(self._gpr_background_mean_count.value())
 
-        y_min_db = float(self._pass_through_y_min_db.value())
-        y_max_db = float(self._pass_through_y_max_db.value())
-        visible_x_min, visible_x_max, visible_z_min, visible_z_max = self._gpr_visible_bounds()
-        config = ProcessingLiveConfig(
-            processor_mode=mode,
+        values = {
+            field: _read_live_widget_value(getter(self))
+            for field, _group, _modes, getter in _WEB_LIVE_SCHEMA
+        }
+
+        # Switch-position CSV text -> integer lists.
+        values["gpr_input_positions"] = self._parse_csv_int_list(values["gpr_input_positions"])
+        values["gpr_output_positions"] = self._parse_csv_int_list(values["gpr_output_positions"])
+        # Order-normalize the pass-through Y range so a reversed entry still works.
+        y_min_db, y_max_db = values["pass_through_y_min_db"], values["pass_through_y_max_db"]
+        values["pass_through_y_min_db"] = min(y_min_db, y_max_db)
+        values["pass_through_y_max_db"] = max(y_min_db, y_max_db)
+        # Visible window: ordered with a non-zero span, for the active mode's widgets.
+        (
+            values["gpr_visible_x_min_m"],
+            values["gpr_visible_x_max_m"],
+            values["gpr_visible_z_min_m"],
+            values["gpr_visible_z_max_m"],
+        ) = self._gpr_visible_bounds()
+
+        return ProcessingLiveConfig(
             pass_through_channel="s21",
-            pass_through_fixed_y_enabled=bool(self._pass_through_fixed_y_enabled.isChecked()),
-            pass_through_y_min_db=min(y_min_db, y_max_db),
-            pass_through_y_max_db=max(y_min_db, y_max_db),
-            bscan_axis=self._bscan_axis.currentText(),
             bscan_channel="s21",
-            bscan_cut_m=float(self._bscan_cut_m.value()),
-            bscan_max_depth_m=float(self._bscan_max_depth_m.value()),
-            bscan_gain=float(self._bscan_gain.value()),
-            bscan_start_freq_mhz=float(self._bscan_start_freq_mhz.value()),
-            bscan_stop_freq_mhz=float(self._bscan_stop_freq_mhz.value()),
-            legacy_gpr_mode=self._legacy_gpr_config_mode.currentText(),
-            gpr_input_positions=self._parse_csv_int_list(gpr_input_positions_text),
-            gpr_output_positions=self._parse_csv_int_list(gpr_output_positions_text),
-            gpr_min_depth_m=gpr_min_depth_m,
-            gpr_max_depth_m=gpr_max_depth_m,
-            gpr_range_comp_power=float(self._gpr_range_comp_power.value()),
-            gpr_angle_comp_power=float(self._gpr_angle_comp_power.value()),
-            gpr_comp_power=float(self._legacy_gpr_comp_power.value()),
-            gpr_score_mode=self._gpr_score_mode.currentText(),
-            gpr_max_detected_objects_to_draw=int(self._gpr_max_detected_objects_to_draw.value()),
-            gpr_draw_top_m_objects=int(self._gpr_draw_top_m_objects.value()),
-            gpr_speed_m_s=float(self._legacy_gpr_speed_m_s.value()),
-            gpr_look_angle_deg=float(self._legacy_gpr_look_angle_deg.value()),
-            gpr_apply_freq_phase_correction=bool(
-                self._legacy_gpr_apply_freq_phase_correction.isChecked()
-            ),
-            gpr_reference_mode=self._legacy_gpr_reference_mode.currentText(),
-            gpr_snr_thresh=float(self._legacy_gpr_snr_thresh.value()),
-            gpr_snr_comp_max=float(self._legacy_gpr_snr_comp_max.value()),
-            gpr_start_freq_mhz=gpr_start_freq_mhz,
-            gpr_stop_freq_mhz=gpr_stop_freq_mhz,
-            gpr_background_subtract_enabled=gpr_background_enabled,
-            gpr_background_mean_count=gpr_background_mean_count,
-            gpr_remove_sidelobe_objects_enabled=bool(self._gpr_remove_sidelobe_objects_enabled.isChecked()),
-            gpr_imaging_plane_y_m=float(self._gpr_imaging_plane_y_m.value()),
-            gpr_min_visible_score=float(self._gpr_min_visible_score.value()),
-            legacy_gpr_min_visible_pair_count=float(self._legacy_gpr_min_visible_pair_count.value()),
-            gpr_visible_x_min_m=visible_x_min,
-            gpr_visible_x_max_m=visible_x_max,
-            gpr_visible_z_min_m=visible_z_min,
-            gpr_visible_z_max_m=visible_z_max,
-            ignore_socket_speed=bool(self._legacy_gpr_ignore_socket_speed_enabled.isChecked()),
             reprocess_current_result=bool(reprocess_current_result),
-            history_command_seq=int(self._history_command_seq),
             history_command=str(history_command),
+            history_command_seq=int(self._history_command_seq),
+            **values,
         )
-        return config
 
     def _write_live_processing_config(
         self,

python_app/gui/controllers/app_window_web_mixin.py

@@ -17,13 +17,12 @@ from __future__ import annotations
 
 import base64
 import contextlib
-import dataclasses
 import os
 import time
 
 from PyQt6.QtCore import QBuffer, QIODevice, QObject, pyqtSignal
 
-from python_app.orchestration.live_processing_config import ProcessingLiveConfig
+from python_app.gui.controllers.app_window_config.live_processing_mixin import web_apply_field_names
 
 _WEBUI_PORT_ENV = "RADAR_SYSTEM_WEBUI_PORT"
 _DEFAULT_PORT = 8080
@@ -32,7 +31,9 @@ _DEFAULT_PORT = 8080
 _HEADLESS_PLOT_SIZE = (1600, 900)
 # Grab/encode the plot at most this often (the plot only changes per result/redraw).
 _GRAB_INTERVAL_S = 0.2
-_LIVE_FIELD_NAMES = frozenset(field.name for field in dataclasses.fields(ProcessingLiveConfig))
+# Field names a web client may apply: the form's live/display/stable fields plus the
+# history command. Derived from the single schema so it can never drift from the form.
+_LIVE_FIELD_NAMES = web_apply_field_names()
 
 
 class AppWindowWebController(QObject):

python_app/tests/test_live_settings_schema.py

@@ -0,0 +1,65 @@
+"""Guard tests keeping the live-settings schema and the config builder in lock-step.
+
+`_live_processing_config` builds ProcessingLiveConfig by reading every widget through
+`_WEB_LIVE_SCHEMA` (the same map the embedded web form renders from), plus a small set
+of fields set explicitly (`_NON_WIDGET_LIVE_FIELDS`). These tests fail the moment a new
+config field is added without being placed in one of those two sets — which is exactly
+the drift that previously hid GPR settings from the web form.
+"""
+
+from __future__ import annotations
+
+import dataclasses as dc
+import unittest
+
+from python_app.gui.controllers.app_window_config.live_processing_mixin import (
+    _NON_WIDGET_LIVE_FIELDS,
+    _WEB_DISPLAY_SCHEMA,
+    _WEB_LIVE_GETTERS,
+    _WEB_STABLE_SCHEMA,
+    web_apply_field_names,
+)
+from python_app.orchestration.live_processing_config import ProcessingLiveConfig
+
+
+class LiveSettingsSchemaCoverageTest(unittest.TestCase):
+    @staticmethod
+    def _config_fields() -> set[str]:
+        return {field.name for field in dc.fields(ProcessingLiveConfig)}
+
+    def test_schema_plus_non_widget_covers_every_config_field(self) -> None:
+        schema_fields = set(_WEB_LIVE_GETTERS)
+        covered = schema_fields | _NON_WIDGET_LIVE_FIELDS
+        config_fields = self._config_fields()
+        self.assertEqual(
+            covered,
+            config_fields,
+            msg=(
+                f"uncovered config fields: {sorted(config_fields - covered)}; "
+                f"stray names: {sorted(covered - config_fields)}"
+            ),
+        )
+
+    def test_widget_and_non_widget_sets_are_disjoint(self) -> None:
+        # A field is either widget-backed (in the schema) or explicitly non-widget — never both.
+        self.assertEqual(set(_WEB_LIVE_GETTERS) & _NON_WIDGET_LIVE_FIELDS, set())
+
+    def test_display_and_stable_fields_are_not_live_config(self) -> None:
+        # Display toggles (GUI profile) and stable fields (run_config) must never collide
+        # with live ProcessingLiveConfig fields — they take different write paths.
+        extra = {f for f, *_ in _WEB_DISPLAY_SCHEMA} | {f for f, *_ in _WEB_STABLE_SCHEMA}
+        self.assertEqual(extra & self._config_fields(), set())
+        self.assertEqual(extra & set(_WEB_LIVE_GETTERS), set())
+
+    def test_web_apply_names_cover_the_whole_form(self) -> None:
+        form_fields = (
+            set(_WEB_LIVE_GETTERS)
+            | {f for f, *_ in _WEB_DISPLAY_SCHEMA}
+            | {f for f, *_ in _WEB_STABLE_SCHEMA}
+        )
+        # The web may apply every form field plus the history command, and nothing else.
+        self.assertEqual(web_apply_field_names(), form_fields | {"history_command"})
+
+
+if __name__ == "__main__":
+    unittest.main()

python_app/webui/static/app.js

@@ -89,6 +89,14 @@ function makeFieldRow(entry) {
   const label = document.createElement("label");
   label.textContent = entry.name;
   label.htmlFor = "f_" + entry.name;
+  if (entry.applies_on_start) {
+    // Stable run_config field: editing it here takes effect on the next pipeline start.
+    const hint = document.createElement("span");
+    hint.className = "on-start-hint";
+    hint.textContent = " (on Start)";
+    hint.title = "Applied when the pipeline next starts";
+    label.appendChild(hint);
+  }
   row.appendChild(label);
 
   let el;
@@ -112,6 +120,10 @@ function makeFieldRow(entry) {
     if (entry.max != null) el.max = entry.max;
     el.step = entry.kind === "float" ? (entry.step || "any") : (entry.step || 1);
     el.value = entry.value;
+  } else if (entry.kind === "textarea") {
+    el = document.createElement("textarea");
+    el.rows = 3;
+    el.value = entry.value == null ? "" : String(entry.value);
   } else {
     el = document.createElement("input");
     el.type = "text";

python_app/webui/static/style.css

@@ -208,6 +208,21 @@ body {
   flex-shrink: 0;
   accent-color: var(--accent);
 }
+.field textarea {
+  width: 160px;
+  flex-shrink: 0;
+  min-height: 52px;
+  resize: vertical;
+  background: var(--panel);
+  border: 1px solid var(--border);
+  border-radius: 7px;
+  padding: 4px 7px;
+  color: var(--text);
+  font-family: var(--mono);
+  font-size: 12px;
+}
+.field textarea:focus { outline: none; border-color: var(--accent); }
+.on-start-hint { color: var(--muted); font-size: 11px; font-style: italic; }
 
 .settings-actions {
   display: flex;