@W-22653726 adding XSD valiation in vs extension

.changeset/vs-extension-xml-validation.md

@@ -0,0 +1,10 @@
+---
+'b2c-vs-extension': minor
+'@salesforce/b2c-dx-docs': patch
+---
+
+Add XSD-based validation for B2C metadata XML files. The extension now contributes 48 schemas (catalogs, promotions, jobs, services, customer feeds, A/B tests, page-meta-tags, sorting rules, source codes, content libraries, and more) so opening a B2C metadata XML produces inline diagnostics, autocomplete, and hover documentation.
+
+**File-glob coverage** spans both common workspace conventions: the canonical SFCC site-archive layout (`sites/<id>/promotions.xml`, `catalogs/<id>/catalog.xml`, …) and exploded-archive workspaces under a `metadata/` folder (`metadata/promotions/*.xml`, `metadata/catalogs/*.xml`, …).
+
+**New install requirement:** the extension declares `redhat.vscode-xml` as an extension dependency. VS Code installs it automatically the first time this extension activates after the upgrade. Users / teams whose policies block third-party extensions should disable `b2c-dx.features.xmlValidation` (or remove the dependency declaration) before deploying the upgrade.

docs/vscode-extension/configuration.md

@@ -94,6 +94,27 @@ The B2C Script Debugger registers regardless of these toggles — it activates o
 | `b2c-dx.sandbox.pollingInterval` | `10` | Seconds between polls while a sandbox is in a transitional state (`creating`, `starting`, `stopping`, `deleting`, `cloning`). Range: 2–300. Polling stops automatically once the realm settles. |
 | `b2c-dx.telemetry.enabled` | `true` | Send anonymous usage telemetry. Honors VS Code's `telemetry.telemetryLevel` — disabling that disables this regardless of this setting. |
 
+### XML schema validation
+
+The extension contributes XSD-based validation for B2C metadata XML files via the [Red Hat XML extension](https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml), which is declared as an extension dependency and installed automatically. When a file path matches one of the contributed globs, diagnostics, autocomplete, and hover docs are driven by the corresponding B2C schema.
+
+Both common workspace conventions are recognized:
+
+- **Canonical site-archive layout** — `sites/<site-id>/`, `catalogs/<id>/`, `libraries/<id>/`, `customer_lists/<id>/`, `pricebooks/`, `inventory_lists/`, `meta/`.
+- **Exploded `metadata/` workspace layout** — `metadata/sites/<id>/*.xml`, `metadata/catalogs/*.xml`, `metadata/promotions/*.xml`, etc.
+
+Schemas covered include catalog, promotion, slot, customer-group, customer-list, custom-object, inventory, library, payment-method, payment-processor, preference, pricebook, redirect-url, search/search2, shipping, site, sourcecode, store, url-rule, jobs, services, schedules, ab-test (and participants), assignment, cache-settings, commerce-feature-state, coupon (and redemption), csrf-allowlist, customer, customer-cdn-settings, dcext, form, geolocation, gift-certificate, locales, meta (system/custom-objecttype-extensions), oauth-providers, page-meta-tags, price-adjustment-limits, product-list, sitemap-configuration, sorting-rules, storefronts, and tax. The full mapping is at `packages/b2c-vs-extension/resources/xsd-mappings.json`.
+
+To disable XML validation globally in your workspace, set:
+
+```jsonc
+{
+  "xml.validation.enabled": false
+}
+```
+
+To opt out of the Red Hat XML dependency entirely, uninstall this extension or pin to a release prior to the one that introduced XML validation.
+
 ### Complete defaults (copy-paste)
 
 ```jsonc

packages/b2c-vs-extension/.gitignore

@@ -5,3 +5,4 @@ node_modules
 .vsce-stage/
 *.vsix
 /coverage
+resources/xsd/