Settings › Spam Filter gains Local AI, the AI spam filtering setup page

Adds a link to CustomComponent/LocalAi in the packaged schema's Settings ›
Spam Filter, above LLM Classifier, and updates the schema hash so admins
fetch the new layout rather than a cached one.

INBUXA Admin draws the page (feature/local-ai-setup); this makes it
reachable. An admin from before that page would show "Unknown component"
here, so this lands after the admin release that carries it.

resources/schema/schema.json.sha256

@@ -1 +1 @@
-LXwX4bO6norwJeWWcibbt1Wxd-jZAHO5TRgLXl3dFzk
+VbnFuwCOTBh0s2T-NuRhb2JaJr8Jl5s3LgXv4Pv2sTg