v1.0.0

What's Changed

• feat(providers): enable Anthropic prompt caching by @andrew-ge-wu in #181
• chore(api): polish extension surfaces + agent introspection for 1.0 by @andrew-ge-wu in #182
• feat(usage): plumb anthropic cache tokens to message_usage and cost by @andrew-ge-wu in #183
• docs(extending): fix stale registerTools signature in readme by @andrew-ge-wu in #184
• chore(api): expose anthropic cache tokens on the messages wire by @andrew-ge-wu in #185
• docs(adr): record the anthropic prompt-caching decision (ADR-0062) by @andrew-ge-wu in #186
• feat(chat): show cache-hit indicator on the per-turn usage bar by @andrew-ge-wu in #187
• chore(release): bump to 1.0.0 by @andrew-ge-wu in #188

Full Changelog: v0.14.0...v1.0.0