fix: resolve 75 mem-cli compilation errors

All errors were API mismatches — handler code calling wrong method
   names, wrong argument types, or missing imports/derives. No logic
   changes. Build now passes with SQLX_OFFLINE=true.

   Key fixes:
   - embed_text -> embed_one, Vector -> Vec<f32> conversion
   - extract_token: extract auth header from HttpRequest first
   - AuthError variants aligned to actual enum definition
   - recursive async fns boxed (dfs_paths in inference + path_finder)
   - missing derives (Default, Serialize), imports (sqlx::Row, Timelike)
   - borrow-after-move: compute .len() before struct field move
   - streaming_body -> streaming with Result<Bytes> for SSE
   - CI: add SQLX_OFFLINE=true for offline builds without DB

   25 files changed, 99 insertions(+), 81 deletions(-)

Co-authored-by: rock <[email protected]>

crates/mem-cli/src/handlers/ranking_handler.rs

@@ -171,7 +171,7 @@ pub struct RankedResult {
 /// GET /memory/ranking/profiles
 pub async fn get_ranking_profiles(req: HttpRequest) -> HttpResponse {
     // Verify auth
-    if let Err(e) = AuthGuard::extract_token(&req) {
+    if let Err(e) = AuthGuard::extract_token(req.headers().get("Authorization").and_then(|v| v.to_str().ok()).unwrap_or("")) {
         return HttpResponse::Unauthorized().json(json!({
             "error": e.to_string()
         }));