fix(qa): resolve DF-002 through DF-011 from QA defect tracking sheet

Batch of fixes for defects tracked in "Task Tracking Template.xlsx" (sheet
Defect Management), verified against the sheet's Root Cause/Cach xu ly
columns before this commit:

- DF-002: Co4E node status not reflected after tab switch + missing
  edit-lock on running/done nodes (node_property_panel.py, co4e_runs.py,
  co4e_workflow_crud.py, co4e_canvas_widget.py, co4e_flow_tabs.py,
  canvas_items.py)
- DF-003: hide the run.bat console window unless the app exits with an
  error (run.bat, scripts/console_visibility.ps1 - new)
- DF-004: floating Help Assistant icon covering the Send button after a
  window resize (presentation/shell/main_window.py)
- DF-005: "block network" toggle didn't stop ICMP/raw-socket tools like
  ping (infrastructure/filesystem/command_tools.py,
  security/command_risk_classifier.py)
- DF-006: Monitoring "gay nang khi log lon" - root cause was re-reading
  the ENTIRE audit log history every 3s tick, not missing pagination;
  bounded to a 30-day window (presentation/monitoring/monitoring_tab.py)
  AND added the "So dong/trang" page-size control the ticket also asked
  for (presentation/monitoring/shared/event_table.py,
  shared/filter_scaffold.py, tabs/action_logs_tab.py, tabs/mcp_tab.py,
  tabs/security_events_tab.py, i18n/agents_admin_tab.py)
- DF-007: support choosing a OneDrive/SharePoint folder as a project's
  working directory via Microsoft Graph, downloaded as a local mirror
  with manual sync (core/projects.py, core/ms365_graph.py,
  core/cloud_workspace_sync.py - new, ui/ms365_signin_dialog.py - new,
  ui/cloud_folder_picker_dialog.py - new, i18n/cloud_workspace.py - new,
  ui/workspace_tab.py)
- DF-008: AI-edit instruction box was a fixed-height single-line QLineEdit;
  replaced with an auto-expanding, Enter-to-send/Shift+Enter-newline input
  (presentation/folder/ai_file_editor_dialog.py)
- DF-011: run_command failed with WinError 267 for a project whose
  per-turn output directory had never been created
  (application/conversations/core_runtime_adapter.py)

DF-009 (AI-edit Apply/Discard buttons easy to miss) and DF-010 (AI reply
language - dev-confirmed not a bug) are intentionally NOT part of this
commit: DF-009 has no code fix yet (still "Assigned" in the sheet, only a
UX recommendation was recorded), DF-010 was rejected as expected behavior.

Tests: tests/test_cloud_workspace_sync.py, tests/test_ms365_cloud_dialogs.py,
tests/test_ai_file_editor_input.py, tests/test_monitoring_page_size.py (all
new, all passing). Full suite: 896 passed, 13 known-and-documented failures
unrelated to this change (an existing core/audit_log.py bug, this checkout
not being a git repo before now, and a repo/subprocess folder-naming
mismatch affecting ~66 characterization tests) - see the sheet's DF-006
Evidence column for details.

presentation/folder/ai_file_editor_dialog.py

@@ -21,9 +21,9 @@ from __future__ import annotations
 from typing import List, Optional
 
 from PySide6.QtWidgets import (
-    QComboBox, QHBoxLayout, QLabel, QLineEdit, QPushButton, QVBoxLayout, QWidget,
+    QComboBox, QHBoxLayout, QLabel, QPlainTextEdit, QPushButton, QVBoxLayout, QWidget,
 )
-from PySide6.QtCore import Signal
+from PySide6.QtCore import Qt, Signal
 
 from cowork_local.i18n import on_language_changed, tr
 from cowork_local.presentation.folder.ai_edit_model_resolver import AiEditModelResolver
@@ -32,6 +32,45 @@ from cowork_local.theme import current_palette
 from cowork_local.ui.chat_view import ChatView
 
 
+class _AutoExpandInput(QPlainTextEdit):
+    """Instruction box: grows with content (1..~6 lines, then scrolls), Enter
+    submits, Shift+Enter inserts a newline — same convention as the Cowork
+    composer (``presentation/chat/chat_input_box.py::_Input``), minus its
+    ``/skill``/``/agent`` popups and drag-drop attachment handling, which
+    don't apply to a single AI-edit instruction. DF-008: a fixed-height
+    single-line ``QLineEdit`` read as cramped for a full instruction; this
+    replaces it instead of just nudging the height up further."""
+
+    submit = Signal()
+
+    MIN_HEIGHT = 36    # matches the old QLineEdit's bumped-up height
+    MAX_HEIGHT = 140   # ~6 lines, then it scrolls instead of growing further
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setTabChangesFocus(True)   # Tab moves focus, doesn't insert a tab
+        self.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
+        self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
+        self.textChanged.connect(self._adjust_height)
+        self._adjust_height()
+
+    def _adjust_height(self) -> None:
+        # QPlainTextEdit reports the document height in LINES, not pixels —
+        # convert via line spacing (same approach as chat_input_box.py).
+        lines = self.document().size().height() or 1
+        line_px = self.fontMetrics().lineSpacing()
+        h = int(lines * line_px + 2 * self.frameWidth() + 12)
+        h = max(self.MIN_HEIGHT, min(self.MAX_HEIGHT, h))
+        if h != self.height():
+            self.setFixedHeight(h)
+
+    def keyPressEvent(self, e) -> None:  # noqa: N802
+        if e.key() in (Qt.Key_Return, Qt.Key_Enter) and not (e.modifiers() & Qt.ShiftModifier):
+            self.submit.emit()
+            return
+        super().keyPressEvent(e)
+
+
 class AiFileEditorDialog(QWidget):
     """Collapsible panel: a Cowork-style inline chat timeline, this panel's
     OWN model picker + routing toggle, an instruction box, and an Apply/
@@ -94,9 +133,9 @@ class AiFileEditorDialog(QWidget):
             ctx, self.ai_model_combo, self.ai_chat.add_status, self._confirm_routing_switch)
 
         row = QHBoxLayout()
-        self.ai_input = QLineEdit()
+        self.ai_input = _AutoExpandInput()
         self.ai_input.setPlaceholderText(tr("folder.ai_placeholder"))
-        self.ai_input.returnPressed.connect(self._ai_send)
+        self.ai_input.submit.connect(self._ai_send)
         row.addWidget(self.ai_input, 1)
         self.ai_send_btn = QPushButton(tr("folder.ai_send"))
         self.ai_send_btn.setObjectName("primary")
@@ -170,7 +209,7 @@ class AiFileEditorDialog(QWidget):
         if not self.preview.root:
             self.ai_chat.add_error(tr("folder.ai_no_file"))
             return
-        instruction = self.ai_input.text().strip()
+        instruction = self.ai_input.toPlainText().strip()
         if not instruction:
             return
         self.ai_input.clear()