claude-plugins: generalize state-hygiene into a shared base plugin for all agents

claude-plugins/.claude-plugin/marketplace.json

@@ -7,9 +7,9 @@
   },
   "plugins": [
     {
-      "name": "state-hygiene",
-      "description": "Read-before-write discipline and dated-archive convention for durable agent notes/state files - use before archiving, overwriting, or pruning any notes/state file.",
-      "source": "./plugins/state-hygiene",
+      "name": "base",
+      "description": "hyperhive's base plugin - skills every agent needs, regardless of role. Currently: state-hygiene (read-before-write discipline and dated-archive convention for durable agent notes/state files). Add a new skill here (not a new plugin) if it applies to all agents; give it its own specialized plugin if it doesn't.",
+      "source": "./plugins/base",
       "category": "productivity"
     }
   ]

claude-plugins/plugins/base/.claude-plugin/plugin.json

@@ -0,0 +1,7 @@
+{
+  "name": "base",
+  "description": "hyperhive's base plugin - skills every agent needs, regardless of role.",
+  "author": {
+    "name": "hyperhive"
+  }
+}

claude-plugins/plugins/state-hygiene/.claude-plugin/plugin.json

@@ -1,7 +0,0 @@
-{
-  "name": "state-hygiene",
-  "description": "Read-before-write discipline and dated-archive convention for durable agent notes/state files.",
-  "author": {
-    "name": "hyperhive"
-  }
-}