v0.1.0.9

Changes

• Merge pull request #20 from PaulTerrasi/claude/magical-brattain-3e9af7 (0592b53)
• Document why buffered CLI stderr is forwarded to the client (960d067)
• Fix duplicate suffix on async-generator comment (55c8c4c)
• Clarify async-generator yield trick in chat route tests (d0fb0a2)
• Drop bogus # pragma: no cover on _capture_stderr (2a18bfd)
• Address review: route owns stderr callback; cover failure path (7762f50)
• Exclude SDK-invoked stderr callback from coverage (02af51d)
• Buffer Claude CLI stderr to diagnose chat failures (0d20df7)