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/agent-setup-page-is-configuration-dialog.md

@@ -0,0 +1,26 @@
+---
+bc-version: [27..]
+domain: agents
+keywords: [configurationdialog, agent-setup-part, setup-page, pagetype, system-actions]
+technologies: [al]
+countries: [w1]
+application-area: [all]
+---
+
+# Agent setup pages use ConfigurationDialog and the Agent Setup Part
+
+## Description
+
+Instance setup is not a Card or StandardDialog. The toolkit expects `PageType = ConfigurationDialog` so OK and Cancel are system actions, plus the built-in `Agent Setup Part` for name, display name, state, and access. A Card with custom fields only drops those shared controls and the AI-use notices the part carries.
+
+## Best Practice
+
+Declare `PageType = ConfigurationDialog`, host `part(...; "Agent Setup Part")`, and put agent-specific fields in another group. Keep system OK/Cancel. Use a temporary source record and defer persistence until Update, as described in `agent-setup-source-table-is-temporary.md`.
+
+See sample: `agent-setup-page-is-configuration-dialog.good.al`.
+
+## Anti Pattern
+
+A Card or StandardDialog setup page with no `Agent Setup Part`. Detection signal: setup page ID from `IAgentFactory` / `IAgentMetadata` whose page is not `ConfigurationDialog` or has no `Agent Setup Part`.
+
+See sample: `agent-setup-page-is-configuration-dialog.bad.al`.