Code Farm: per-plot auto-replant pause and crop-lock check; community sync and node work

Continuous Delivery could never be turned off once a crop was planted. Add a
one-shot per-plot "stop after harvest" flag (POST /game/plot/stop, Devii tool
game_plot_stop, game_plots.stop_after_harvest), cleared by the next plant,
autoreplant claim or Refactor. Autoreplant now also respects crop locks through
the shared _crop_lock predicate. Plan and measurements in happyplanting.md.

Also includes the pending community sync, node network and related work in the
tree; the full suite passed (4999) with all of it.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

nodes/extension/manifest.json

@@ -8,9 +8,22 @@
     "scripts": ["src/background.js"],
     "type": "module"
   },
+  "icons": {
+    "16": "icons/icon-16.png",
+    "32": "icons/icon-32.png",
+    "48": "icons/icon-48.png",
+    "128": "icons/icon-128.png"
+  },
   "action": {
     "default_title": "DevPlace Node",
-    "default_popup": "ui/popup.html"
+    "default_popup": "ui/popup.html",
+    "default_icon": {
+      "16": "icons/icon-16.png",
+      "32": "icons/icon-32.png"
+    }
+  },
+  "content_security_policy": {
+    "extension_pages": "script-src 'self'; object-src 'self'"
   },
   "permissions": ["storage", "alarms"],
   "host_permissions": [