Add projects to shared tag discovery

content/blog/example-deployment-runbook/contents.lr

@@ -161,18 +161,19 @@ entry before its tag record exists. To rename or retire a tag, update every
 referencing entry deliberately and verify that no old slug remains before
 renaming or removing its record.
 
-`/tags/` lists every approved tag and counts its usage across blog entries and
-articles. Dedicated tag URLs list matching entries from both sections. Tag
-links are normal links and work without JavaScript. On the Blog and Articles
-listing pages, `assets/static/tags.js` progressively adds instant filtering and
-keeps the selected filter in the `tag` query parameter.
+`/tags/` lists every approved tag and counts its usage across projects, blog
+entries, and articles. Dedicated tag URLs combine matching records from all
+three sections. Tag links are normal links and work without JavaScript. On the
+Projects, Blog, and Articles listing pages, `assets/static/tags.js`
+progressively adds instant filtering and keeps the selected filter in the `tag`
+query parameter.
 
 After taxonomy or filtering changes:
 
-1. Run `lektor build --output-path build`.
-2. Verify `/tags/`, at least one dedicated tag URL, and both section listings.
-3. Confirm tag counts cover blog entries and articles and that every entry slug
-   has a matching tag record.
+1. Run `python scripts/build_with_projects.py --output-path build`.
+2. Verify `/tags/`, at least one dedicated tag URL, and all three section listings.
+3. Confirm tag counts cover projects, blog entries, and articles and that every
+   stored entry slug has a matching tag record.
 4. Test filtering with JavaScript enabled and confirm tag links remain usable
    without JavaScript.
 5. Check keyboard operation plus desktop and narrow layouts.