Add URL deletion and improve snapshots

manifest.llm.json

@@ -49,7 +49,8 @@
     ],
     "repo_ordering": "Gitea repos are ordered by latest default-branch commit timestamp.",
     "add_url_behavior": "The user must pick either a workspace or a Gitea repo. The app infers the linked counterpart from local context and stores the URL link in chrome.storage.local.",
-    "add_issue_behavior": "The form shows the target repo for the active known URL, captures visible-tab screenshots, accepts file attachments, creates a Gitea issue, uploads screenshots/files as issue assets, then applies the ready label after uploads when requested. Issue bodies include Chrome profile: Silma.",
+    "delete_url_behavior": "URLs can be deleted from the list. User-added URLs are removed from chrome.storage.local; generated known URLs are hidden by storing their base URL in silmaAide.deletedUrlBases.",
+    "add_issue_behavior": "The form shows the target repo for the active known URL, captures visible-tab screenshots with thumbnails, accepts file attachments, creates a Gitea issue, uploads screenshots/files as issue assets, then applies the ready label after uploads when requested. Issue bodies include Chrome profile: Silma.",
     "known_urls": [
       {
         "url": "http://100.66.226.22:23030/",
@@ -77,6 +78,11 @@
     "storage",
     "tabs"
   ],
+  "extension_host_permissions": [
+    "http://*/*",
+    "https://*/*",
+    "Gitea host derived from VITE_GITEA_BASE_URL"
+  ],
   "commands": {
     "install": "npm ci",
     "codex_setup": "npm run codex:setup",