feat(web): POST /uploads/{id}/delete, owner-scoped and refused while the recording is active (#37)

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

internal/web/handlers.go

@@ -59,6 +59,9 @@ type Store interface {
 	// non-owner's id is ErrUploadNotFound.
 	GetUpload(ctx context.Context, userID, id string) (*domain.UploadedTranscript, error)
 	ListUploads(ctx context.Context, userID string) ([]domain.UploadedTranscript, error)
+	// DeleteUpload removes a finished upload; ErrUploadInProgress while it is still being
+	// processed, ErrUploadNotFound for a non-owner.
+	DeleteUpload(ctx context.Context, userID, id string) error
 
 	// SetTranscriptStatus clears or updates a video's transcript backoff state.
 	// Used by handleRetryNow to clear rate_limited_at before immediate processing.
@@ -200,6 +203,7 @@ func (a *App) Router() http.Handler {
 		app.HandleFunc("POST /uploads", a.handleUploadPost)
 		app.HandleFunc("GET /uploads/{id}", a.handleUploadDetail)
 		app.HandleFunc("GET /uploads/{id}/status", a.handleUploadStatus)
+		app.HandleFunc("POST /uploads/{id}/delete", a.handleUploadDelete)
 		// Chat over the uploaded transcript reuses the ADR-027 Chatter; mounted only
 		// when one is wired.
 		if a.Chat != nil {

internal/web/uploads.go

@@ -210,6 +210,32 @@ func (a *App) handleUploadStatus(w http.ResponseWriter, r *http.Request) {
 	a.render(w, r, uploadStatus(*u, a.Chat != nil, a.now()))
 }
 
+// handleUploadDelete removes one of the caller's finished recordings and returns to the
+// list. Another user's id is a 404 like every other upload route; a recording still being
+// transcribed is refused (409) rather than deleted under the worker (#37).
+func (a *App) handleUploadDelete(w http.ResponseWriter, r *http.Request) {
+	userID, ok := a.currentUserID(w, r)
+	if !ok {
+		return
+	}
+	id := r.PathValue("id")
+	if !uuidShape.MatchString(id) {
+		http.NotFound(w, r)
+		return
+	}
+	switch err := a.Store.DeleteUpload(r.Context(), userID, id); {
+	case err == nil:
+		http.Redirect(w, r, "/uploads", http.StatusSeeOther)
+	case errors.Is(err, store.ErrUploadNotFound):
+		http.NotFound(w, r)
+	case errors.Is(err, store.ErrUploadInProgress):
+		a.renderUploadsPage(w, r, userID, http.StatusConflict,
+			"This recording is still being transcribed. You can delete it once it has finished.")
+	default:
+		a.serverError(w, r, "delete upload", err)
+	}
+}
+
 func (a *App) loadOwnedUpload(w http.ResponseWriter, r *http.Request) (*domain.UploadedTranscript, bool) {
 	userID, ok := a.currentUserID(w, r)
 	if !ok {