Plugin cloning via menu (#6433)

* Add plugin cloning via menu

* Split plugin commands by action

* Keep plugin enablement in action commands

* Remove unused plugin edit command

* Simplify plugin rescan arguments

* Assume Omarchy shell is running for plugin commands

* Remove plugin compatibility dispatcher

* Flatten plugin clone command

* Keep only shared plugin helpers

* Remove plugin rescan wrapper

* Keep plugin commands self-contained

* Simplify plugin clone lifecycle

bin/omarchy-plugin-validate

@@ -49,7 +49,7 @@ done
 ID=$(jq -r '.id // ""' "$MANIFEST")
 [[ -n $ID ]] || fail "manifest 'id' is empty"
 [[ $ID =~ ^[A-Za-z0-9][A-Za-z0-9._-]*$ ]] || fail "invalid plugin id '$ID'"
-[[ $ID != *"/"* && $ID != *".."* ]] || fail "invalid plugin id '$ID'"
+[[ $ID != *".."* ]] || fail "invalid plugin id '$ID'"
 [[ $ID != omarchy.* ]] || fail "plugin id '$ID' uses the reserved omarchy.* namespace"
 
 # kinds must be a non-empty array.
@@ -115,16 +115,4 @@ done
 link=$(find "$PLUGIN_DIR" -name .git -prune -o -type l -print -quit 2>/dev/null)
 [[ -z $link ]] || fail "symlinks are not allowed inside a plugin folder: $link"
 
-# The whole omarchy.* namespace plus every shipped first-party id is reserved.
-# A third-party plugin claiming one of those ids would be rejected by the shell
-# and could shadow built-in behaviour, so refuse it here too.
-FIRST_PARTY_DIR="${OMARCHY_PATH:-$HOME/.local/share/omarchy}/shell/plugins"
-if [[ -d $FIRST_PARTY_DIR ]]; then
-  while IFS= read -r fp_manifest; do
-    [[ -f $fp_manifest ]] || continue
-    fp_id=$(jq -r '.id // empty' "$fp_manifest" 2>/dev/null || true)
-    [[ $fp_id == "$ID" ]] && fail "plugin id '$ID' collides with a first-party Omarchy plugin"
-  done < <(find "$FIRST_PARTY_DIR" -type f \( -name manifest.json -o -name '*.manifest.json' \) 2>/dev/null)
-fi
-
 exit 0