diff --git a/.github/workflows/publish-versioned-docs.yml b/.github/workflows/publish-versioned-docs.yml
index 7745e26c5..fb07e667a 100644
--- a/.github/workflows/publish-versioned-docs.yml
+++ b/.github/workflows/publish-versioned-docs.yml
@@ -1,12 +1,17 @@
-# Publishes the actively-maintained docs (main -> "dev", edgetx_2.12 ->
-# "latest") via `mike deploy` on every push. Legacy GitBook-era versions
-# (2.4-2.11) are NOT handled here -- this job assumes a working mkdocs.yml
-# already exists at the branch root when triggered, but none of those
-# branches ever had one committed (they're raw GitBook content; building
-# them requires running tools/import_legacy_gitbook.py first, which this
-# workflow doesn't do). They're deployed manually instead: run the import
-# script against each legacy branch/ref, then `mike deploy --config-file
-# <generated config> --push <version>`. See MIGRATION-PLAN.md.
+# Publishes the maintained docs via `mike deploy` on every push:
+#   main        -> "dev"
+#   edgetx_2.12 -> "2.12" + "latest"
+#   edgetx_2.11 -> "2.11" (LTS)
+#
+# main and edgetx_2.12 carry the MkDocs site and build from their own
+# mkdocs.yml. GitBook-era branches (2.4-2.11) have no MkDocs config or
+# tooling, so for those the job checks out the tooling from the latest
+# release branch and converts the pushed branch's content with
+# tools/import_legacy_gitbook.py before deploying. A push to edgetx_2.11
+# can only run workflows committed on edgetx_2.11, so that branch carries
+# a small caller workflow that invokes this one via workflow_call.
+# 2.4-2.10 are frozen and were deployed by hand the same way (import, then
+# `mike deploy --config-file <generated config> --push <version>`).
 #
 # mike keeps the accumulated versioned site on the gh-pages branch; after
 # each deploy, the full gh-pages tree is published to Cloudflare Workers
@@ -20,82 +25,47 @@ on:
       - main
       - edgetx_2.12
   workflow_dispatch:
+  workflow_call:
 
 permissions:
   contents: write
 
-# Pushes to main and edgetx_2.12 both rewrite gh-pages and then upload the
-# whole tree, so run them one at a time to avoid racing mike or publishing
-# a stale snapshot.
-concurrency:
-  group: publish-versioned-docs
-  cancel-in-progress: false
-
 jobs:
   publish:
     runs-on: ubuntu-latest
 
-    steps:
-      - name: Check out source
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-
-      - name: Install uv
-        uses: astral-sh/setup-uv@v5
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
+    # Every run rewrites gh-pages and then uploads the whole tree, so run
+    # them one at a time to avoid racing mike or publishing a stale
+    # snapshot. This is job-level rather than workflow-level so it also
+    # applies when called from another branch's workflow.
+    concurrency:
+      group: publish-versioned-docs
+      cancel-in-progress: false
 
+    steps:
       - name: Resolve version metadata
         id: version
         shell: bash
         run: |
+          # In a workflow_call run, github.ref_name is the caller's branch.
           branch="${GITHUB_REF_NAME}"
           latest_branch="edgetx_2.12"
 
           case "${branch}" in
+            main)
+              version_id="dev"
+              title="Dev"
+              source="mkdocs"
+              ;;
             edgetx_2.12)
               version_id="2.12"
               title="2.12"
+              source="mkdocs"
               ;;
-            edgetx_2.4)
-              version_id="2.4"
-              title="2.4"
-              ;;
-            edgetx_2.5)
-              version_id="2.5"
-              title="2.5"
-              ;;
-            edgetx_2.6)
-              version_id="2.6"
-              title="2.6"
-              ;;
-            edgetx_2.7)
-              version_id="2.7"
-              title="2.7"
-              ;;
-            edgetx_2.8)
-              version_id="2.8"
-              title="2.8"
-              ;;
-            edgetx_2.9)
-              version_id="2.9"
-              title="2.9"
-              ;;
-            edgetx_2.10)
-              version_id="2.10"
-              title="2.10"
-              ;;
-            edgetx_2.11)
-              version_id="2.11"
-              title="2.11"
-              ;;
-            main)
-              version_id="dev"
-              title="Dev"
+            edgetx_2.[4-9]|edgetx_2.1[01])
+              version_id="${branch#edgetx_}"
+              title="${version_id}"
+              source="gitbook"
               ;;
             *)
               echo "Unsupported branch: ${branch}" >&2
@@ -109,15 +79,45 @@ jobs:
             aliases="${version_id}"
           fi
 
+          if [[ "${source}" == "gitbook" ]]; then
+            tools_ref="${latest_branch}"
+            config_file=".site-legacy-generated/${version_id}/mkdocs.yml"
+          else
+            tools_ref="${GITHUB_SHA}"
+            config_file="mkdocs.yml"
+          fi
+
           {
+            echo "branch=${branch}"
             echo "version_id=${version_id}"
             echo "title=${title}"
             echo "aliases=${aliases}"
+            echo "source=${source}"
+            echo "tools_ref=${tools_ref}"
+            echo "config_file=${config_file}"
           } >> "${GITHUB_OUTPUT}"
 
+      - name: Check out source
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ steps.version.outputs.tools_ref }}
+          fetch-depth: 0
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
       - name: Sync docs dependencies
         run: uv sync
 
+      - name: Import GitBook content
+        if: steps.version.outputs.source == 'gitbook'
+        run: uv run python tools/import_legacy_gitbook.py --ref "origin/${{ steps.version.outputs.branch }}"
+
       - name: Configure git author
         run: |
           git config user.name "github-actions[bot]"
@@ -125,12 +125,13 @@ jobs:
 
       - name: Publish docs with mike
         env:
-          # "Edit this page" should open the branch this version is built from.
-          DOCS_EDIT_URI: edit/${{ github.ref_name }}/website/md-docs/
-        run: uv run mike deploy --push --update-aliases --title "${{ steps.version.outputs.title }}" ${{ steps.version.outputs.aliases }}
+          # "Edit this page" should open the branch this version is built
+          # from. Imported GitBook configs set their own empty edit_uri.
+          DOCS_EDIT_URI: edit/${{ steps.version.outputs.branch }}/website/md-docs/
+        run: uv run mike deploy --push --update-aliases --config-file "${{ steps.version.outputs.config_file }}" --title "${{ steps.version.outputs.title }}" ${{ steps.version.outputs.aliases }}
 
       - name: Set default docs version
-        if: github.ref_name == 'edgetx_2.12'
+        if: steps.version.outputs.branch == 'edgetx_2.12'
         run: uv run mike set-default --push latest
 
       - name: Export gh-pages tree for Cloudflare