diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 17abceb..19a16a5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version-file: ".nvmrc"
           cache: npm
 
       - name: Install dependencies
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index cb4949e..f419da6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -19,7 +19,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version-file: ".nvmrc"
           registry-url: https://registry.npmjs.org
           cache: npm
 
diff --git a/.nvmrc b/.nvmrc
new file mode 100644
index 0000000..a45fd52
--- /dev/null
+++ b/.nvmrc
@@ -0,0 +1 @@
+24
diff --git a/AGENTS.md b/AGENTS.md
index 6acc1f6..7e3807f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -8,6 +8,47 @@ The repo is currently in an early, docs-first stage. Use this file to keep imple
 - `seamless-auth-api`
 - `seamless-auth-server`
 
+## Working Standards (fells-code baseline)
+
+These rules apply to every repository in the fells-code org. Repo-specific
+guidance may extend them but must not contradict them.
+
+### Attribution
+
+- Commit and open PRs solely under the repository owner's identity. Never
+  commit under an agent or assistant identity.
+- Never attribute work to an AI assistant: no `Co-Authored-By: Claude` (or any
+  assistant) trailers, no "Generated with" / "Created with Claude" notes, and no
+  assistant branding or emoji anywhere in commit messages, PR or issue titles
+  and descriptions, changesets, code comments, or docs.
+
+### Comments
+
+- Comment only when the code genuinely needs explaining: a non-obvious reason, a
+  gotcha, or an invariant. Never narrate what the code plainly does.
+
+### TODOs
+
+- Every `TODO`/`FIXME` must reference a ticket, e.g. `// TODO(#123): ...`.
+  Do not leave a bare TODO. If no ticket exists, create one first.
+
+### Commits & branches
+
+- Conventional Commits (`feat:`, `fix:`, `chore:`, `docs:`, `ci:`, `test:`).
+- Descriptive branch names (`feat/...`, `fix/...`); never a `claude/` or other
+  tool-generated prefix.
+
+### Public-facing text
+
+- No em dashes in commit messages, code comments, PR or issue text, changesets,
+  or docs. Use a comma, parentheses, or a separate sentence.
+
+### Before declaring work done
+
+- Run the repo's checks (typecheck, lint, format, tests) and report real output.
+  Never claim a change works without running them.
+- Match the surrounding code's style, naming, and comment density.
+
 ## Purpose
 
 This repository is the public messaging package system for SeamlessAuth.
diff --git a/package.json b/package.json
index d3a082c..7505ab0 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "packages/*"
   ],
   "engines": {
-    "node": ">=18"
+    "node": ">=24 <25"
   },
   "scripts": {
     "build": "tsc -b",