chore(release): v0.3.0

[tomfordweb]

Minor release: bump version to 0.3.0.

Since v0.2.0:

• feat: sidemux log CLI + log/close guidance for agents
• feat(wait): since=now to scope pattern matches to new output
• feat(server): run/wait timeout_ms up to 24h
• fix(jobs): subshell-guard exit/exec so the sentinel always prints
• fix(server): accept timeout_seconds as an alias on run and wait
• fix(init): guard no longer matches delegated names inside quoted args
• fix(run): return a real N-line tail, not the prompt redraw
• fix(jobs): wait for a fresh pane's prompt before typing a command
• fix(dashboard): stop top bar flicker from frame overflow
• fix(jobs): settle jobs via log-file sentinel when the pane loses it
• fix(output): strip terminal escapes from all agent-facing payloads
• fix(service): scope default list_panes/status to this agent's panes
• docs: plainer voice rewrite, delegate block sync