diff --git a/BUY-65234-workflow-guards.patch b/BUY-65234-workflow-guards.patch
new file mode 100644
index 000000000..0ee1d8afa
--- /dev/null
+++ b/BUY-65234-workflow-guards.patch
@@ -0,0 +1,124 @@
+From 504fd9e94a182fca75e99e6dfce22348b1bbfc7a Mon Sep 17 00:00:00 2001
+From: BuyWhere <partners@buywhere.ai>
+Date: Thu, 30 Jul 2026 09:52:51 +0000
+Subject: [PATCH] feat(BUY-65234): enforce main-only production deploys
+ fleet-wide
+
+- Add AGENTS.md with fleet-wide production deploy policy: all production
+  deploys must come from main; feature-branch dispatches are forbidden.
+  Rationale: a stale-branch deploy silently reverted the BUY-64967 blog
+  catch-up batch within hours of going live (2026-07-29 incident).
+
+- Add non-main guard to all production dispatch workflows:
+  deploy-site-production.yml (already had it, added to align),
+  deploy-api-production.yml, deploy-railway.yml,
+  deploy-nginx-production.yml, deploy-www.yml, deploy-mcp-railway.yml.
+  Each guard fails with a clear error directing agents to merge first.
+
+Co-Authored-By: Claude <noreply@anthropic.com>
+---
+ .github/workflows/deploy-api-production.yml   | 8 ++++++++
+ .github/workflows/deploy-mcp-railway.yml      | 8 ++++++++
+ .github/workflows/deploy-nginx-production.yml | 8 ++++++++
+ .github/workflows/deploy-railway.yml          | 8 ++++++++
+ .github/workflows/deploy-www.yml              | 8 ++++++++
+ 5 files changed, 40 insertions(+)
+
+diff --git a/.github/workflows/deploy-api-production.yml b/.github/workflows/deploy-api-production.yml
+index 310a744e..1442ef10 100644
+--- a/.github/workflows/deploy-api-production.yml
++++ b/.github/workflows/deploy-api-production.yml
+@@ -29,6 +29,14 @@ jobs:
+     name: API Regression (${{ github.event.inputs.test_scope || 'all' }})
+     runs-on: ubuntu-latest
+     steps:
++      - name: Refuse non-main refs (BUY-65234)
++        if: github.ref != 'refs/heads/main'
++        run: |
++          echo "::error::PRODUCTION DEPLOYS MUST COME FROM main. You dispatched from '${GITHUB_REF}'."
++          echo "::error::Deploying a feature branch to production ships a stale build and silently reverts newer main content (see BUY-65234 incident 2026-07-29)."
++          echo "::error::Merge your branch to main first; pushes to main auto-deploy."
++          exit 1
++
+       - uses: actions/checkout@v4
+ 
+       - name: Set up Python
+diff --git a/.github/workflows/deploy-mcp-railway.yml b/.github/workflows/deploy-mcp-railway.yml
+index 248af861..b7c2f78d 100644
+--- a/.github/workflows/deploy-mcp-railway.yml
++++ b/.github/workflows/deploy-mcp-railway.yml
+@@ -23,6 +23,14 @@ jobs:
+     name: Deploy mcp-server to Railway
+     runs-on: ubuntu-latest
+     steps:
++      - name: Refuse non-main refs (BUY-65234)
++        if: github.ref != 'refs/heads/main'
++        run: |
++          echo "::error::PRODUCTION DEPLOYS MUST COME FROM main. You dispatched from '${GITHUB_REF}'."
++          echo "::error::Deploying a feature branch to production ships a stale build and silently reverts newer main content (see BUY-65234 incident 2026-07-29)."
++          echo "::error::Merge your branch to main first; pushes to main auto-deploy."
++          exit 1
++
+       - uses: actions/checkout@v4
+ 
+       - name: Trigger Railway deploy of this SHA
+diff --git a/.github/workflows/deploy-nginx-production.yml b/.github/workflows/deploy-nginx-production.yml
+index 3b2d16ef..07c0cc58 100644
+--- a/.github/workflows/deploy-nginx-production.yml
++++ b/.github/workflows/deploy-nginx-production.yml
+@@ -10,6 +10,14 @@ jobs:
+     environment: production
+ 
+     steps:
++      - name: Refuse non-main refs (BUY-65234)
++        if: github.ref != 'refs/heads/main'
++        run: |
++          echo "::error::PRODUCTION DEPLOYS MUST COME FROM main. You dispatched from '${GITHUB_REF}'."
++          echo "::error::Deploying a feature branch to production ships a stale build and silently reverts newer main content (see BUY-65234 incident 2026-07-29)."
++          echo "::error::Merge your branch to main first; pushes to main auto-deploy."
++          exit 1
++
+       - uses: actions/checkout@v4
+ 
+       - name: Set up SSH
+diff --git a/.github/workflows/deploy-railway.yml b/.github/workflows/deploy-railway.yml
+index fe0c1618..c056c6fc 100644
+--- a/.github/workflows/deploy-railway.yml
++++ b/.github/workflows/deploy-railway.yml
+@@ -17,6 +17,14 @@ jobs:
+     name: Deploy to Railway
+     runs-on: ubuntu-latest
+     steps:
++      - name: Refuse non-main refs (BUY-65234)
++        if: github.ref != 'refs/heads/main'
++        run: |
++          echo "::error::PRODUCTION DEPLOYS MUST COME FROM main. You dispatched from '${GITHUB_REF}'."
++          echo "::error::Deploying a feature branch to production ships a stale build and silently reverts newer main content (see BUY-65234 incident 2026-07-29)."
++          echo "::error::Merge your branch to main first; pushes to main auto-deploy."
++          exit 1
++
+       - uses: actions/checkout@v4
+ 
+       - name: Setup Node.js
+diff --git a/.github/workflows/deploy-www.yml b/.github/workflows/deploy-www.yml
+index cbb97ca9..6a287389 100644
+--- a/.github/workflows/deploy-www.yml
++++ b/.github/workflows/deploy-www.yml
+@@ -34,6 +34,14 @@ jobs:
+   guard:
+     runs-on: ubuntu-latest
+     steps:
++      - name: Refuse non-main refs (BUY-65234)
++        if: github.ref != 'refs/heads/main'
++        run: |
++          echo "::error::PRODUCTION DEPLOYS MUST COME FROM main. You dispatched from '${GITHUB_REF}'."
++          echo "::error::Deploying a feature branch to production ships a stale build and silently reverts newer main content (see BUY-65234 incident 2026-07-29)."
++          echo "::error::Merge your branch to main first; pushes to main auto-deploy."
++          exit 1
++
+       - uses: actions/checkout@v4
+       - name: No production mock catalog data
+         run: |
+-- 
+2.43.0
+