Reduce Juice idle power usage (#18)

* Reduce Juice idle power usage

* Prevent stale helper state updates

* Recover delayed status item discovery

* Publish current helper handshake failures

* Guard stale helper fetch failures

* Suspend hidden surface background work

* Refresh power state before selecting popover range

* Refresh visible Stats app totals

Merge pull request #13 from EClinick/task/ec/fix-battery-popover

Fix battery popover layout

Merge pull request #12 from EClinick/codex/fix-release-rpath

Fix universal release rpath validation

Merge pull request #10 from EClinick/codex/charge-across-dmg

Polish the macOS installer

Merge pull request #9 from EClinick/task/ec/charging-system-power

Show system power while charging

Merge pull request #8 from EClinick/task/ec/update-ready-notification

Notify users when updates are ready

Merge pull request #7 from EClinick/task/ec/session-tab-behavior

Customize energy tabs and gate Session live power

Merge pull request #6 from EClinick/task/ec/power-save-icon

Show Low Power Mode in menu bar icon

Merge pull request #5 from EClinick/task/ec/session-today

Show battery usage for the current unplugged session

Share one live power pipeline between the popover and Stats