fix(dev-preview): address code review issues

- Use get_logger() from src.logging_config instead of logging.getLogger()
  in visual_display_manager.py to match project logging conventions
- Eliminate duplicate public/private weather draw methods — public draw_sun/
  draw_cloud/draw_rain/draw_snow now delegate to the private _draw_* variants
  so plugins get consistent pixel output in tests vs production
- Default install_deps=False in dev_server.py and render_plugin.py — dev
  scripts don't need to run pip install; developers are expected to have
  plugin deps installed in their venv already
- Guard plugins_dir fixture against PermissionError during directory iteration
- Fix PluginInstallManager.updateAll() to fall back to window.installedPlugins
  when PluginStateManager.installedPlugins is empty (plugins_manager.js
  populates window.installedPlugins independently of PluginStateManager)
- Remove 5 debug console.log statements from plugins_manager.js button setup
  and initialization code

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

src/plugin_system/testing/visual_display_manager.py

@@ -12,7 +12,6 @@ MagicMock (which tracks nothing visual), this class creates a real
 PIL Image canvas and draws text using the actual project fonts.
 """
 
-import logging
 import math
 import os
 import time
@@ -21,7 +20,9 @@ from typing import Any, Dict, List, Optional, Tuple
 
 from PIL import Image, ImageDraw, ImageFont
 
-logger = logging.getLogger(__name__)
+from src.logging_config import get_logger
+
+logger = get_logger(__name__)
 
 
 class _MatrixProxy:
@@ -322,50 +323,19 @@ class VisualTestDisplayManager:
 
     def draw_sun(self, x: int, y: int, size: int = 16):
         """Draw a sun icon using yellow circles and lines."""
-        center = (x + size // 2, y + size // 2)
-        radius = size // 3
-        self.draw.ellipse(
-            [center[0] - radius, center[1] - radius,
-             center[0] + radius, center[1] + radius],
-            fill=(255, 255, 0),
-        )
-        ray_length = size // 4
-        for angle in range(0, 360, 45):
-            rad = math.radians(angle)
-            start_x = center[0] + (radius * math.cos(rad))
-            start_y = center[1] + (radius * math.sin(rad))
-            end_x = center[0] + ((radius + ray_length) * math.cos(rad))
-            end_y = center[1] + ((radius + ray_length) * math.sin(rad))
-            self.draw.line([start_x, start_y, end_x, end_y], fill=(255, 255, 0), width=2)
+        self._draw_sun(x, y, size)
 
     def draw_cloud(self, x: int, y: int, size: int = 16, color=(200, 200, 200)):
         """Draw a cloud icon."""
-        self.draw.ellipse([x + size // 4, y + size // 3, x + size // 4 + size // 2, y + size // 3 + size // 2], fill=color)
-        self.draw.ellipse([x + size // 2, y + size // 3, x + size // 2 + size // 2, y + size // 3 + size // 2], fill=color)
-        self.draw.ellipse([x + size // 3, y + size // 6, x + size // 3 + size // 2, y + size // 6 + size // 2], fill=color)
+        self._draw_cloud(x, y, size)
 
     def draw_rain(self, x: int, y: int, size: int = 16):
         """Draw rain icon with cloud and droplets."""
-        self.draw_cloud(x, y, size)
-        drop_color = (0, 0, 255)
-        drop_size = size // 6
-        for i in range(3):
-            drop_x = x + size // 4 + (i * size // 3)
-            drop_y = y + size // 2
-            self.draw.line([drop_x, drop_y, drop_x, drop_y + drop_size], fill=drop_color, width=2)
+        self._draw_rain(x, y, size)
 
     def draw_snow(self, x: int, y: int, size: int = 16):
         """Draw snow icon with cloud and snowflakes."""
-        self.draw_cloud(x, y, size)
-        snow_color = (200, 200, 255)
-        for i in range(3):
-            center_x = x + size // 4 + (i * size // 3)
-            center_y = y + size // 2 + size // 4
-            for angle in range(0, 360, 60):
-                rad = math.radians(angle)
-                end_x = center_x + (size // 8 * math.cos(rad))
-                end_y = center_y + (size // 8 * math.sin(rad))
-                self.draw.line([center_x, center_y, end_x, end_y], fill=snow_color, width=1)
+        self._draw_snow(x, y, size)
 
     def _draw_sun(self, x: int, y: int, size: int) -> None:
         """Draw a sun icon with rays (internal weather icon version)."""