feat(community/agents): add AL agent quality guidance

- add 20 agent knowledge rules with good and bad AL samples
- clarify setup dialog shape, temporary persistence, permissions, profiles, instructions, capability registration, and interface wiring
- add the community-owned AL agents review skill
- make review fixture discovery layer-aware with custom, community, and Microsoft precedence
- document layer-aware evaluation behavior

community/knowledge/agents/get-default-profile-lives-in-the-app.md

@@ -0,0 +1,30 @@
+---
+bc-version: [27..]
+domain: agents
+keywords: [getdefaultprofile, profile, page-customization, populatedefaultprofile, role-center]
+technologies: [al]
+countries: [w1]
+application-area: [all]
+---
+
+# The default agent profile must be an AL profile in the app
+
+## Description
+
+`IAgentFactory.GetDefaultProfile` assigns the Role Center and page customizations the agent UI-navigates. A profile built only in the client, or page personalization that was never exported, is absent after deploy. `Agent.PopulateDefaultProfile` still needs a profile ID that exists in the current module.
+
+## Best Practice
+
+Ship a `profile` object (and page customizations) in the app. In `GetDefaultProfile`, call `Agent.PopulateDefaultProfile` with that profile ID and `NavApp.GetCurrentModuleInfo`. Include UI-exported customizations as AL.
+
+See sample: `get-default-profile-lives-in-the-app.good.al`.
+
+## Anti Pattern
+
+Setting `TempAllProfile."Profile ID"` to a client-only profile, or skipping `GetDefaultProfile`. Detection signal: factory default profile ID with no matching `profile` object in the app.
+
+See sample: `get-default-profile-lives-in-the-app.bad.al`.
+
+## See also
+
+`agent-profile-narrows-visible-ui.md` explains which UI the app-owned profile should expose.