Add package.json script, update READMEs

Author: kfranqueiro

11ty/README.md

@@ -23,10 +23,11 @@ Common tasks:
   - http://localhost:8080/techniques
   - http://localhost:8080/understanding
 
-Maintenance tasks (for working with Eleventy config and supporting files under this subdirectory):
+Maintenance tasks (for working with Eleventy config and supporting files used by the build):
 
 - `npm run check` checks for TypeScript errors
 - `npm run fmt` formats all TypeScript files
+- `npm run changelog` generates data for the Techniques Change Log
 
 ## Environment Variables
 

README.md

@@ -219,9 +219,8 @@ appended to the "Note" title in applicable versions, and the note will be hidden
 
 ### Techniques Change Log
 
-At the time of writing (November 2024), the Change Log in the Techniques index is identical between WCAG 2.1 and 2.2.
-These have been split out into separate version-specific includes under `_includes/techniques/changelog/*.html`
-for future-proofing in support of building multiple versions of informative documents from the same branch.
+Data for the Techniques Change Log is now generated automatically by a script that reads git history;
+see [Eleventy Usage](11ty/README.md#usage).
 
 ## Working Examples
 

package.json

@@ -8,6 +8,7 @@
     "build": "tsx node_modules/@11ty/eleventy/cmd.cjs --config=eleventy.config.ts",
     "check": "tsc",
     "fmt": "prettier . -w",
+    "changelog": "tsx 11ty/generate-techniques-changelog-data.ts",
     "publish-w3c": "WCAG_VERSION=22 WCAG_JSON=1 WCAG_MODE=publication npm run build && tsx 11ty/cp-cvs.ts",
     "publish-w3c:21": "WCAG_VERSION=21 WCAG_JSON=1 WCAG_MODE=publication npm run build && WCAG_VERSION=21 tsx 11ty/cp-cvs.ts",
     "start": "tsx watch node_modules/@11ty/eleventy/cmd.cjs --config=eleventy.config.ts --serve --incremental"