feat: start local Pane daemon server

[parsakhaz]

Summary

• start a local Pane daemon server from Electron bootstrap using the shared daemon command registry
• fan daemon-owned runtime events to connected local daemon clients while keeping Electron as the first client
• add transport and import-boundary tests for the new server bootstrap slice

Testing

• pnpm typecheck
• pnpm lint
• CI=1 pnpm --filter main test
• PANE_DIR=/tmp/pane-phase2-daemon-server-bootstrap xvfb-run -a pnpm test:ci

[parsakhaz]

@codex review

[parsakhaz]

@claude review

[chatgpt-codex-connector]

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