Fix: Immediate task switcher visibility and hidden sandbox during runs

Fix: Custom prompt orchestration, metadata flickering, and task switcher visibility

fix: custom prompts run single task only, not all 3 default tasks

fix: auto-fill custom prompts, keep prompt box visible during runs, run user prompt not default tasks

feat: add custom command prompts

docs: evidence proof above graphs, overlay fix, M2M section, logs fix

Redesign Incident Summary card; fix container log visibility with unbuffered python

Fix graphs: broadcast reward events; move FinOps Summary to full-width bottom bar

Initial Space deployment with llama-cpp + React dashboard