docs: clarify Every Code source references

AGENTS.md

@@ -7,9 +7,18 @@
 - Use GitHub issues labeled `plan` and `plan:active` for active cross-session
   work. Do not rely on local handoff files or local plan drafts as the source of
   truth for GitHub-backed work.
-- `cbusillo/code` is restored Every Code history and source material only. New
-  implementation work belongs in `cbusillo/codex-lab` unless the user explicitly
-  says otherwise.
+- New implementation work belongs in this repo unless the user explicitly says
+  otherwise.
+- When sibling restored sources are present, use
+  `../code-prealign-new-skills/code-rs` as the first reference for Every Code
+  product behavior and UX. In particular, account/login/settings flows live in
+  that tree, including the TUI bottom-pane account views and core account
+  switching/auth-account code.
+- Treat `../code/code-rs` and `../code/codex-rs` as restored history and shared
+  lineage/reference material, not authoritative Every Code UX sources. Use them
+  only when cross-checking lower-level behavior that is not product-flow
+  specific.
+- Treat `../code/every-code-webui` as Every Code web UI reference material only.
 
 ## Rust/codex-rs