cli-v0.9.0

What's Changed

• cli: publish to npm via trusted publishing, after the release by @Mark-Life in #39
• sessions: show system prompt and hidden context entries in history by @Mark-Life in #40
• sessions: apply pi context_edit entries to history and budget by @Mark-Life in #41
• sessions: build codex context budget from token_count by @Mark-Life in #42
• sessions: measure per-event tokens from usage deltas by @Mark-Life in #43

Full Changelog: cli-v0.8.0...cli-v0.9.0