security: remove email reference from marketplace manifest and docs

Replaces owner.email field in marketplace.json with owner.url pointing to
GitHub profile. Also removes email mentions from the v1.2.0 release session
note and the full-repo-audit plan doc. No real contact email should ship in
the public plugin manifest.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -2,11 +2,11 @@
   "name": "claude-obsidian-marketplace",
   "owner": {
     "name": "AgriciDaniel",
-    "email": "***REMOVED***"
+    "url": "https://github.com/AgriciDaniel"
   },
   "metadata": {
-    "description": "claude-obsidian — Claude + Obsidian knowledge companion by AgriciDaniel",
-    "version": "1.2.0"
+    "description": "claude-obsidian: Claude + Obsidian knowledge companion by AgriciDaniel",
+    "version": "1.4.0"
   },
   "plugins": [
     {
@@ -17,7 +17,7 @@
         "ref": "main"
       },
       "description": "Claude + Obsidian knowledge companion. Sets up a persistent, compounding wiki vault. Covers memory management, session notetaking, knowledge organization, and agent context across projects.",
-      "version": "1.2.0",
+      "version": "1.4.0",
       "author": {
         "name": "AgriciDaniel",
         "url": "https://github.com/AgriciDaniel"