Envy v0.3.1 — no more frozen container lists, and colourful logs

Two quality-of-life fixes worth updating for:

• Container discovery no longer silently freezes. If the Docker engine restarted, updated, or idle-stopped (OrbStack, Docker Desktop), or the machine slept long enough to kill the connection, Envy could stop noticing new containers — the list froze and new URLs hit the "No container is mapped" page until you restarted the app and daemon. Envy now detects every way the event stream can die and recovers automatically, with a background reconciliation sweep as a safety net for the cases that produce no signal at all.
• Container logs render ANSI colour. Tools that colour their output (vite, ng, npm, most runtimes) used to show up as literal [32m escape noise in the log pane. Those codes now render as real colour and styling, theme-aware in both light and dark, and progress bars redraw in place instead of stacking. Lines that carry their own colours are no longer blanket-painted red just for arriving on stderr.