feat(graph): add graph tab for whole-run data

Provides a static line chart plotting multi-sensor temperature values
over time when a session file is loaded.

src/pygui/backend/controllers/session_controller.py

@@ -11,7 +11,11 @@ from PySide6.QtCore import Property, QObject, Qt, QTimer, Signal, Slot
 from pygui.backend.cluster_average import average_clusters, group_sensors_by_radius
 from pygui.backend.data.csv_recorder import CsvRecorder
 from pygui.backend.models.frame import Frame
-from pygui.backend.models.frame_player import FramePlayer, frames_from_wafer_data
+from pygui.backend.models.frame_player import (
+    FramePlayer,
+    all_sensor_series,
+    frames_from_wafer_data,
+)
 from pygui.backend.models.frame_stats import compute_edge_center
 from pygui.backend.models.sensor_editor import SensorEditor
 from pygui.backend.models.session_model import SessionModel, SessionUpdate
@@ -207,6 +211,18 @@ class SessionController(QObject):
     @Property(str, notify=loadedFileChanged)
     def loadedFile(self) -> str: return self._loaded_file
 
+    @Property(str, notify=loadedFileChanged)
+    def graphSensorNames(self) -> str:
+        """Comma-joined sensor names for the whole-run Graph tab."""
+        names, _ = all_sensor_series(list(self._player.frames))
+        return ",".join(names)
+
+    @Property(str, notify=loadedFileChanged)
+    def graphSeriesJson(self) -> str:
+        """JSON per-sensor value series (one list per sensor) for the Graph tab."""
+        _, series = all_sensor_series(list(self._player.frames))
+        return json.dumps(series)
+
     @Property("QVariantList", notify=frameUpdated)  # type: ignore[arg-type]
     def overriddenSensors(self) -> list[int]:
         """Indices of sensors that currently have a replacement or offset."""

src/pygui/backend/models/frame_player.py

@@ -8,6 +8,19 @@ def frames_from_wafer_data(data: ZWaferData | None, records) -> list[Frame]:
     """Build Frames from parsed DataRecords (records = list[DataRecord].)"""
     return [Frame(seq=i, time=r.time, values=list(r.values)) for i, r in enumerate(records)]
 
+
+def all_sensor_series(frames: list[Frame]) -> tuple[list[str], list[list[float]]]:
+    """Per-sensor value series across every frame, for the whole-run Graph tab.
+
+    Sensor names are 1-based ("Sensor 1", ...), matching the C# original.
+    """
+    if not frames:
+        return [], []
+    n_sensors = len(frames[0].values)
+    names = [f"Sensor {i + 1}" for i in range(n_sensors)]
+    series = [[frame.values[i] for frame in frames] for i in range(n_sensors)]
+    return names, series
+
 class FramePlayer:
     def __init__(self) -> None:
         self._frames: list[Frame] =[]
@@ -22,6 +35,10 @@ class FramePlayer:
     def total(self) -> int:
         return len(self._frames)
 
+    @property
+    def frames(self) -> tuple[Frame, ...]:
+        return tuple(self._frames)
+
     @property
     def index(self) -> int:
         return self._i