fix(scrub): restore missing line continuation in aggressive_patterns

A missing trailing backslash after the Thumbs.db:encryptable pattern
terminated the `set -l aggressive_patterns` array early. The AI-tool
patterns (.gemini*, .claude*, .antigravity*, .remember*) were then
executed as a bogus command instead of being appended to the array,
so scrub -a never actually purged them, and every scrub invocation
printed a spurious "Unknown command" error.

functions/scrub.fish

@@ -55,8 +55,8 @@ function scrub --description 'Recursively purge OS, editor, and compiler garbage
         '^\.vagrant$' \
         '^\.clwb$' \
         '^\.idea$' \
-        '^Thumbs\.db:encryptable$'
-    '^\.gemini.*' \
+        '^Thumbs\.db:encryptable$' \
+        '^\.gemini.*' \
         '^\.claude.*' \
         '^\.antigravity.*' \
         '^\.remember.*'