feat(install): ask for QMD local search models and run the QMD installer

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/lib/install-options.ps1

@@ -32,14 +32,14 @@ function Read-SemanticRetrievalOption {
     param([bool]$Default,[string]$RepositoryRoot,[string]$HomePath)
     $hint = if ($Default) { 'Y/n/a' } else { 'y/N/a' }
     while ($true) {
-        Write-Host "Enable Qwen3 embedding and reranking semantic retrieval? [$hint] " -NoNewline
+        Write-Host "Enable local QMD search models (Qwen3 embedding, Qwen3 reranker, QMD query expansion)? [$hint] " -NoNewline
         $answer = [Console]::ReadLine()
         if ($null -eq $answer) { throw 'Input ended before semantic retrieval was confirmed.' }
         switch ($answer.Trim().ToLowerInvariant()) {
             '' { return $Default }
             { $_ -in @('y', 'yes') } { return $true }
             { $_ -in @('n', 'no') } { return $false }
-            { $_ -in @('a', 'auto') } { return Test-SemanticRetrievalDevice -RepositoryRoot $RepositoryRoot -HomePath $HomePath }
+            { $_ -in @('a', 'auto') } { return Test-QmdDevice -RepositoryRoot $RepositoryRoot -HomePath $HomePath }
         }
     }
 }

scripts/lib/install-options.sh

@@ -41,7 +41,7 @@ read_semantic_retrieval_option() {
   local default=$1 hint=y/N/a answer
   [ "$default" = false ] || hint=Y/n/a
   while :; do
-    printf 'Enable Qwen3 embedding and reranking semantic retrieval? [%s] ' "$hint" >&2
+    printf 'Enable local QMD search models (Qwen3 embedding, Qwen3 reranker, QMD query expansion)? [%s] ' "$hint" >&2
     IFS= read -r answer || { printf 'Input ended before semantic retrieval was confirmed.\n' >&2; return 1; }
     answer=${answer%$'\r'}
     case "$answer" in
@@ -49,7 +49,7 @@ read_semantic_retrieval_option() {
       y|Y|yes|Yes|YES) printf 'true\n'; return ;;
       n|N|no|No|NO) printf 'false\n'; return ;;
       a|A|auto|Auto|AUTO)
-        if test_semantic_retrieval_device "$root" "$home_path"; then printf 'true\n'; return; else status=$?; fi
+        if test_qmd_device "$root" "$home_path"; then printf 'true\n'; return; else status=$?; fi
         [ "$status" -eq 1 ] && { printf 'false\n'; return; }
         return "$status"
         ;;