fix: add try-catch to inline hooks, fix schema drift

- Wrap JSON.parse in try-catch for all 6 inline hooks in hooks.json
  (dev-server blocker, tmux reminder, git-push reminder, doc blocker,
  PR create logger, build analysis) — previously unguarded JSON.parse
  would crash on empty/malformed stdin, preventing data passthrough
- Add config parse error logging to evaluate-session.js
- Fix plugin.schema.json: author can be string or {name,url} object,
  add version (semver pattern), homepage, keywords, skills, agents
- Fix package-manager.schema.json: add setAt (date-time) field and
  make packageManager required to match actual code behavior

schemas/package-manager.schema.json

@@ -11,7 +11,13 @@
         "yarn",
         "bun"
       ]
+    },
+    "setAt": {
+      "type": "string",
+      "format": "date-time",
+      "description": "ISO 8601 timestamp when the preference was last set"
     }
   },
+  "required": ["packageManager"],
   "additionalProperties": false
-}
+}

schemas/plugin.schema.json

@@ -5,9 +5,35 @@
   "required": ["name"],
   "properties": {
     "name": { "type": "string" },
+    "version": { "type": "string", "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+$" },
     "description": { "type": "string" },
-    "author": { "type": "string" },
+    "author": {
+      "oneOf": [
+        { "type": "string" },
+        {
+          "type": "object",
+          "properties": {
+            "name": { "type": "string" },
+            "url": { "type": "string", "format": "uri" }
+          },
+          "required": ["name"]
+        }
+      ]
+    },
+    "homepage": { "type": "string", "format": "uri" },
     "repository": { "type": "string" },
-    "license": { "type": "string" }
+    "license": { "type": "string" },
+    "keywords": {
+      "type": "array",
+      "items": { "type": "string" }
+    },
+    "skills": {
+      "type": "array",
+      "items": { "type": "string" }
+    },
+    "agents": {
+      "type": "array",
+      "items": { "type": "string" }
+    }
   }
 }