axe is an html-only option

src/resources/editor/tools/vs-code.mjs

@@ -24927,12 +24927,12 @@ var require_yaml_intelligence_resources = __commonJS({
         mermaid: "%%"
       },
       "handlers/mermaid/schema.yml": {
-        _internalId: 197539,
+        _internalId: 197477,
         type: "object",
         description: "be an object",
         properties: {
           "mermaid-format": {
-            _internalId: 197531,
+            _internalId: 197469,
             type: "enum",
             enum: [
               "png",
@@ -24948,7 +24948,7 @@ var require_yaml_intelligence_resources = __commonJS({
             exhaustiveCompletions: true
           },
           theme: {
-            _internalId: 197538,
+            _internalId: 197476,
             type: "anyOf",
             anyOf: [
               {
@@ -24992,6 +24992,11 @@ var require_yaml_intelligence_resources = __commonJS({
       "schema/document-a11y.yml": [
         {
           name: "axe",
+          tags: {
+            formats: [
+              "$html-files"
+            ]
+          },
           schema: {
             anyOf: [
               "boolean",

src/resources/editor/tools/yaml/yaml-intelligence-resources.json

@@ -17899,12 +17899,12 @@
     "mermaid": "%%"
   },
   "handlers/mermaid/schema.yml": {
-    "_internalId": 197539,
+    "_internalId": 197477,
     "type": "object",
     "description": "be an object",
     "properties": {
       "mermaid-format": {
-        "_internalId": 197531,
+        "_internalId": 197469,
         "type": "enum",
         "enum": [
           "png",
@@ -17920,7 +17920,7 @@
         "exhaustiveCompletions": true
       },
       "theme": {
-        "_internalId": 197538,
+        "_internalId": 197476,
         "type": "anyOf",
         "anyOf": [
           {
@@ -17964,6 +17964,11 @@
   "schema/document-a11y.yml": [
     {
       "name": "axe",
+      "tags": {
+        "formats": [
+          "$html-files"
+        ]
+      },
       "schema": {
         "anyOf": [
           "boolean",

src/resources/filters/qmd-json-reader.lua

@@ -0,0 +1,19 @@
+-- json-reader.lua
+-- A Pandoc reader for quarto-markdown's json format
+-- 
+-- Copyright (C) 2025 by RStudio, PBC
+
+local readqmd = require("readqmd")
+
+function Reader (inputs, opts)
+  -- the custom Pandoc reader apparently runs on a different Lua context than the
+  -- other filters, so we cannot use global state to share the options.
+  -- as a result, we'll inject the options into the document metadata
+  -- and extract it later.
+
+  local result = pandoc.read(tostring(inputs), "json")
+
+  result.meta.quarto_pandoc_reader_opts = readqmd.options_to_meta(opts)
+
+  return result
+end

src/resources/schema/document-a11y.yml

@@ -1,4 +1,6 @@
 - name: axe
+  tags:
+    formats: [$html-files]
   schema:
     anyOf:
       - boolean