diff --git a/.cursor/rules/auth-and-permissions.mdc b/.cursor/rules/auth-and-permissions.mdc
index 66d57e0..7308787 100644
--- a/.cursor/rules/auth-and-permissions.mdc
+++ b/.cursor/rules/auth-and-permissions.mdc
@@ -1,5 +1,5 @@
 ---
-description: Auth model + permission model for tcg-vault (JWT + collection roles)
+description: Auth model + permission model for Deck Hearth (JWT + collection roles)
 globs: pages/api/**/*.js,lib/*.js,components/*.js,pages/*.js
 ---
 
diff --git a/.cursor/rules/ui-and-theming.mdc b/.cursor/rules/ui-and-theming.mdc
index 72e18da..7ab5134 100644
--- a/.cursor/rules/ui-and-theming.mdc
+++ b/.cursor/rules/ui-and-theming.mdc
@@ -58,4 +58,4 @@ Don't duplicate navigation in a page — extend `NavigationContent` inside Layou
 
 ## Branding
 
-The repo says "TCG Vault" everywhere except `components/Layout.js`, which renders "Deck Hearth" and "DH" logo. A naming convoy is open. Until resolved, **do not introduce a third name** in new copy.
+The canonical product brand is **Deck Hearth** (two words, internal cap), ratified 2026-05-24 in the `pick-a-name` convoy. The repo directory + GitHub project name remain `tcg-vault` until the queued `rename-repo-and-vercel-project` convoy ships. New UI copy MUST use `Deck Hearth` verbatim — do not introduce a third name, do not abbreviate to "DH" outside the logo glyph (currently used in `components/Layout.js` lines 621, 714 as the sidebar logo monogram).
diff --git a/AGENTS.md b/AGENTS.md
index 9dfa564..b954ea0 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -2,7 +2,7 @@
 
 Guidance for agents and humans working in this repo. Prefer existing patterns over new abstractions.
 
-> Branding note: the repo, README, and seed data say "TCG Vault" and `admin@tcgvault.com`, but the Layout component renders "Deck Hearth". Pick one before launch — see `.convoys/` for tracking.
+> Branding note: **Deck Hearth** is the canonical product brand (ratified 2026-05-24 in the `pick-a-name` convoy). The repo directory name `tcg-vault` stays for now — see queued `rename-repo-and-vercel-project`. The seed admin email migrated from `admin@tcgvault.com` to `admin@deckhearth.com` in the same convoy; see Gotcha #4 + `.convoys/pick-a-name.md` for the rotation flow.
 
 ## 1. Project overview
 
diff --git a/pages/api/cards/import-lorcana.js b/pages/api/cards/import-lorcana.js
index 077f6ee..705e266 100644
--- a/pages/api/cards/import-lorcana.js
+++ b/pages/api/cards/import-lorcana.js
@@ -11,7 +11,7 @@ async function fetchWithRetry(url, maxRetries = 3, delayMs = 2000) {
     try {
       const response = await fetch(url, {
         headers: {
-          'User-Agent': 'TCG-Vault/1.0',
+          'User-Agent': 'Deck-Hearth/1.0',
           'Accept': 'application/json'
         },
         timeout: 30000 // 30 second timeout
diff --git a/pages/api/cards/import-pokemon.js b/pages/api/cards/import-pokemon.js
index da2dd1b..01974a9 100644
--- a/pages/api/cards/import-pokemon.js
+++ b/pages/api/cards/import-pokemon.js
@@ -11,7 +11,7 @@ async function fetchWithRetry(url, maxRetries = 3, delayMs = 2000) {
     try {
       const response = await fetch(url, {
         headers: {
-          'User-Agent': 'TCG-Vault/1.0',
+          'User-Agent': 'Deck-Hearth/1.0',
           'Accept': 'application/json'
         },
         timeout: 30000 // 30 second timeout
diff --git a/scripts/README.md b/scripts/README.md
index ebf3414..07d462f 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -1,4 +1,4 @@
-# TCG Vault Bulk Import Scripts
+# Deck Hearth Bulk Import Scripts
 
 This directory contains scripts for bulk importing TCG card data into the database.
 
diff --git a/scripts/import-lorcana.js b/scripts/import-lorcana.js
index 325f1ac..a3eeefa 100644
--- a/scripts/import-lorcana.js
+++ b/scripts/import-lorcana.js
@@ -17,7 +17,7 @@ async function fetchWithRetry(url, maxRetries = 3, delayMs = 2000) {
     try {
       const response = await fetch(url, {
         headers: {
-          'User-Agent': 'TCG-Vault/1.0',
+          'User-Agent': 'Deck-Hearth/1.0',
           'Accept': 'application/json'
         },
         timeout: 30000 // 30 second timeout