Agent Usage Web v0.2.2

Container image: leishi1313/agent-usage-web:0.2.2 (runs both exporter and web roles).

What's Changed

• Record the v0.2.1 production rollout by @LeiShi1313 in #6
• Persist exporter provider caches by @LeiShi1313 in #7
• Fix bounded Codex cost collection by @LeiShi1313 in #8

Full Changelog: v0.2.1...v0.2.2