feat: show measurements on the site

Each emulator with records gets a Tested block: claim, result, method, computer, core build and the permalink of its record at the pin. A Measurements page filters every test in the browser from the compact index, and the Data page lists measurements.sqlite with its tables. One SQLite file per emulator is linked from its page. wiki/measurements.md says how a test runs, held to the Start here budgets.

Both workflows fetch the pinned commit alone with git before the build, and the deploy fails without it.

scripts/sitestarlight.py

@@ -28,6 +28,7 @@ COMPONENTS = {
     "Tabs": "@astrojs/starlight/components",
     "TabItem": "@astrojs/starlight/components",
     "FilePicker": "components/FilePicker.astro",
+    "MeasurementsExplorer": "components/MeasurementsExplorer.astro",
 }
 
 # Pages of file cards: level 3 headings by the hundred, so the table of