Publish composes edges into manifest.json at the bundle level

Bundles that declare composition in their profile meta.json (composes:
[...]) now carry that array on the manifest's bundle object, so a
consumer like the plugin studio can render the composition tree without
re-deriving it. 7 bundles affected: big-picture, dashboard-plus-grid,
research-map-plus-grid, my-upg-100-list, stack-demo, doxa-maps-spa,
plugin-studio. Omitted for bundles with no composed children.

internal/generate-tree.mjs

@@ -329,6 +329,22 @@ function composesAMapLeaf(dir, profileName, file) {
   } catch { return false }
 }
 
+/**
+ * The RAW `composes` array a profile declares in its own <profile>.meta.json, or null when
+ * the profile declares none / the file is absent / malformed. This is the same source
+ * composesAMapLeaf reads (see its point 1) but returns the author's data itself rather than
+ * a map-ness boolean derived from it — the manifest needs the edges, not just the verdict.
+ */
+function readComposes(dir, profileName) {
+  try {
+    const metaPath = join(dir, `${profileName}.meta.json`)
+    if (!existsSync(metaPath)) return null
+    const meta = JSON.parse(readFileSync(metaPath, 'utf8'))
+    const composes = Array.isArray(meta?.composes) ? meta.composes.map((c) => String(c)).filter(Boolean) : []
+    return composes.length ? composes : null
+  } catch { return null }
+}
+
 /** Element tag names a bundle registers, read from its index.js (order preserved). */
 function extractElements(indexJsPath) {
   if (!existsSync(indexJsPath)) return []
@@ -1122,6 +1138,16 @@ function scanBundles() {
     profiles.sort((a, b) =>
       (PROTOTYPE_RE.test(a.profile) ? 1 : 0) - (PROTOTYPE_RE.test(b.profile) ? 1 : 0))
 
+    // Bundle-level composition edges: the union of every profile's own <profile>.meta.json
+    // `composes` (most bundles carry exactly one profile that declares it; my-upg-100-list is
+    // the one bundle with several profiles, only one of which — upg-100-mfe — composes). Union,
+    // not "first wins", so a future bundle with more than one composing profile still publishes
+    // every edge. Read straight from vueFiles (not the `profiles` array above) so this stays the
+    // ONE place `composes` is published — at the bundle level only, matching the manifest shape.
+    // Omitted entirely when no profile in the bundle declares composes (no empty array).
+    const bundleComposes = vueFiles.flatMap((file) => readComposes(dir, file.replace(/\.vue$/, '')) || [])
+    const composesUnique = [...new Set(bundleComposes)]
+
     bundles.push({
       bundle: entry,
       // Absolute-or-root-relative URL to the bundle IIFE (paste-anywhere).
@@ -1129,6 +1155,7 @@ function scanBundles() {
       output: `${TREE_NAME}/${entry}/${entry}.js`,
       integrity,
       elements: bundleElements,
+      ...(composesUnique.length ? { composes: composesUnique } : {}),
       profiles,
     })
   }

public/doxa-maps/manifest.json

@@ -41,6 +41,10 @@
         "bp-research-header",
         "people-groups-grid"
       ],
+      "composes": [
+        "bp-research-header",
+        "people-groups-grid"
+      ],
       "profiles": [
         {
           "profile": "big-picture",
@@ -193,6 +197,10 @@
       "elements": [
         "dashboard-plus-grid"
       ],
+      "composes": [
+        "research-dashboard",
+        "people-groups-grid"
+      ],
       "profiles": [
         {
           "profile": "dashboard-plus-grid",
@@ -276,6 +284,14 @@
       "elements": [
         "doxa-maps-spa"
       ],
+      "composes": [
+        "bp-big-picture",
+        "doxa-research-map",
+        "doxa-simple-map",
+        "cities-internet-map",
+        "gospel-resources-map",
+        "my-upg-100-list-map"
+      ],
       "profiles": [
         {
           "profile": "doxa-maps-spa",
@@ -611,6 +627,10 @@
       "elements": [
         "my-upg-100-list-map"
       ],
+      "composes": [
+        "my-upg-100-list/upg-100-list",
+        "my-upg-100-list/poster-wall"
+      ],
       "profiles": [
         {
           "profile": "poster-wall",
@@ -725,6 +745,18 @@
       "elements": [
         "plugin-studio"
       ],
+      "composes": [
+        "bp-big-picture",
+        "people-groups-grid",
+        "doxa-research-map",
+        "doxa-simple-map",
+        "cities-internet-map",
+        "gospel-resources-map",
+        "my-upg-100-list-map",
+        "doxa-vision-card",
+        "all-people-groups",
+        "research-dashboard"
+      ],
       "profiles": [
         {
           "profile": "plugin-studio",
@@ -844,6 +876,10 @@
       "elements": [
         "research-map-plus-grid"
       ],
+      "composes": [
+        "doxa-research-map",
+        "people-groups-grid"
+      ],
       "profiles": [
         {
           "profile": "research-map-plus-grid",
@@ -884,6 +920,10 @@
       "elements": [
         "stack-demo"
       ],
+      "composes": [
+        "research-dashboard-map",
+        "people-groups-grid"
+      ],
       "profiles": [
         {
           "profile": "stack-demo",