Switchboard 0.4.6

• Stop losing data or the host: a cancelled tool batch now answers every tool_call id, an unreadable automations.json is never overwritten and one bad schedule cannot exit the process, CI run records are written atomically and privately, and a session larger than the reader limit keeps its newest turns plus a searchable archive instead of vanishing.
• Browser safety: "allow for this session" now applies to the granted tool in that session (screenshots, downloads and page quarantine still ask every time), pre-auth pairing bodies are capped at 64 KB, a quarantined page withholds its title and selectors, and a download is attributed only to the approved tab and origin.
• Report failures instead of faking success: provider timeouts say request timed out after Ns, a stream cut before its terminal marker is rejected, an empty model answer fails the run instead of storing a canned sentence, and a workflow with an older running run no longer starts a second copy.
• Chat accepts the four ~5 MB images it documents (body cap raised, oversize mapped to 413).
• Console: status chips and counts meet 4.5:1 in light and dark, the delete button meets the 24×24 target, and the Run trace pane has empty and error states.