Otto 0.1.4

What's new

• Vision fallback: image questions walk a chain (gemini-3.8-flash → 3.7-flash → 3.6-flash → Claude Haiku 4.5 → GPT-5 mini) instead of failing when one provider is out of credit. Router.chain() and describe_with_fallback() are new.
• Documents: make_document writes PDF, Word, Excel and PowerPoint from Markdown (or from a file) into documents/. openpyxl, python-docx and reportlab are now installed everywhere; python-pptx is new.
• Phone as a last resort: the phone decision prefers otto's own tools, judges attached files by name only, and when no model can decide, uses the phone only for an explicit device request.
• Phone action dictionary: a bridge that offers actions() / run_action() gets phone_find (search the phone's premapped actions) and phone_action (run one by name). The prompt stays the same size however many actions the phone has. Actions the person finishes hand the phone over; message text and recipients stay out of the log.
• invalid is a phone error code.