diff --git a/.github/workflows/mintlify-quality.yml b/.github/workflows/mintlify-quality.yml
index 45e9713d7e..50b460d56e 100644
--- a/.github/workflows/mintlify-quality.yml
+++ b/.github/workflows/mintlify-quality.yml
@@ -5,9 +5,31 @@ on:
     branches:
       - main
       - docs-next
+    paths: &docs-paths
+      - 'docs-site'
+      - 'docs-site/**'
+      - 'docs'
+      - 'docs/**'
+      - 'mintlify-native'
+      - 'mintlify-native/**'
+      - 'patches'
+      - 'patches/**'
+      - 'tests/**'
+      - 'src/**'
+      - 'scripts/**'
+      - '.gitattributes'
+      - '.gitignore'
+      - '.prettierrc'
+      - '.prettierignore'
+      - 'package.json'
+      - 'package-lock.json'
+      - 'tsconfig.json'
+      - 'docusaurus.config.js'
+      - '.github/workflows/**'
   push:
     branches:
       - docs-next
+    paths: *docs-paths
   workflow_dispatch:
 
 permissions:
diff --git a/.github/workflows/test-deploy.yml b/.github/workflows/test-deploy.yml
index 94833d1422..d3e2e8c2c7 100644
--- a/.github/workflows/test-deploy.yml
+++ b/.github/workflows/test-deploy.yml
@@ -27,5 +27,8 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
+      - name: Check preserved site files
+        run: node --test --test-name-pattern='repository retains' scripts/site-boundary.test.mjs
+
       - name: Test build website
         run: npm run build
diff --git a/scripts/README.md b/scripts/README.md
index b1b8eaff7a..763efa891c 100644
--- a/scripts/README.md
+++ b/scripts/README.md
@@ -17,6 +17,23 @@ workflows use it. `npm run check:mintlify`, run by the
 [quality workflow](../.github/workflows/mintlify-quality.yml), includes the root
 regression suites and freshness checks; it does not build or deploy edge infrastructure.
 
+The quality workflow uses GitHub's native `paths` filters for PRs and pushes.
+Directory-wide patterns cover docs sources, `patches/`, `src/`, `scripts/`,
+`tests/`, and `.github/workflows/`, alongside the listed root dependencies and
+configuration. This intentionally includes non-docs edits within those directories
+so new inputs are covered without maintaining per-file lists. The shared path
+list lives directly in the workflow.
+Manual runs remain unfiltered. GitHub's native diff limits apply; use a manual
+run for unusually large changes. Keep this path-filtered status optional, since
+GitHub leaves skipped workflow checks pending.
+
+The always-running [deployment workflow](../.github/workflows/test-deploy.yml)
+runs the existing file-preservation test from `site-boundary.test.mjs` on every
+PR to `main` or `docs-next`, so deleting or moving required website files cannot
+bypass the check when docs quality is skipped.
+Blog and static-asset-only changes do not trigger the full docs suite.
+Nightly/manual source updaters remain unchanged.
+
 | Files | Role and root commands |
 | --- | --- |
 | `prepare-agent-content.mjs`, `agent-content.mjs`, `validate-agent-content.mjs` | Prepare/check the curated root LLM index, website-only bundle, and Home/Project/Community Markdown: `npm run build:agent-content`, `npm run check:agent-content`. |