diff --git a/Architecture.md b/Architecture.md
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--- a/Architecture.md
+++ b/Architecture.md
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+# Architecture
+
+## Classification
+
+Automation / agent workspace.
+
+## Structure Signals
+
+- `(root)` (3 files)
+
+## File Type Signals
+
+- `.md` (2)
+- `.gitignore` (1)
+
+## Build And Dependency Signals
+
+| Signal | Detail |
+|---|---|
+| README files | README.md |
+
+## Project Tree Snapshot
+
+- .gitignore
+- setup_guide.md
+- wiring_diagram.md
+
+## Interpretation
+
+Treat this page as the maintainer map. Replace inferred structure with exact module responsibilities once active code paths are confirmed.