- TabloUpdateHandler: capture user from loadOwnedTablo (was discarded with _)
- Pass captured user to TabloDetailPage on non-HTMX validation error path
instead of nil, preventing broken layout (no logout button/email shown)
- TabloUpdateHandler: pass tablo.Color to UpdateTablo to preserve color on update (CR-01)
- loadOwnedTablo: pass GetTabloByIDParams{ID, UserID} to DB query (WR-01 call site)
- TabloDeleteHandler: pass DeleteTabloParams{ID, UserID} to DB query (WR-02 call site)
- TabloDeleteHandler: on DB error with HX-Request, render TabloDeleteConfirmFragment
instead of plain http.Error to avoid broken HTMX DOM state (CR-03)
- renderTabloCreateError: log secondary ListTablosByUser fetch failure (WR-03)
- TablosCreateHandler: validate color with isValidCSSColor (hex only) and surface
TabloCreateErrors.Color field error to prevent CSS injection (WR-04)
- Add isValidCSSColor helper using ^#[0-9a-fA-F]{3}([0-9a-fA-F]{3})?$ regex
- Update test call sites for GetTabloByID and DeleteTablo new param types
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>