v1.9.0

What's Changed

• Added Slack and Discord webhook delivery with cn channels.
• Added opt-in Codex and Claude usage alerts with 20%/10% threshold warnings.
• Added distinct daily (5h) and weekly (7d) token reset notifications with separate voice/sound controls.
• Added README voice samples for Codex daily and weekly reset announcements.
• Added regression coverage for channel delivery, usage thresholds, reset dedupe, and first-observation-at-100% behavior.
• Updated macOS/Linux install payloads and Windows installer/help/status surfaces for the new commands.

Verification

• bash scripts/run_tests.sh - 26 passed, 0 failed
• npm publish --dry-run --access public
• pwsh -NoProfile -Command '$null = [scriptblock]::Create((Get-Content scripts/install-windows.ps1 -Raw)); "OK"'
• git diff --check