umputun / stash / 20686955179

Pull #58

github

fix: properly terminate SSE subscription connections on Close

- Subscription.Close() now cancels the HTTP request context instead of
  just signaling a done channel, ensuring connections do not leak
- Added test verifying Close() terminates server connection and closes
  both channels
- Increased SSE test sleep times to 200ms for CI robustness

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4031 of 4842 relevant lines covered (83.25%)

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