v0.1.9: Truncated enrichment gating and accepted-answer completeness

Truncated enrichment gating and accepted-answer completeness

Result-completeness signaling across search_questions, get_tag_faq, and get_thread.

Fixed:

• truncated enrichment on search_questions, get_tag_faq, and get_thread no longer fires unconditionally — each now gates on genuine capping (SE has_more, or answers.length < answerCount for threads) (#7)
• get_thread fetches and merges the accepted answer when it ranks outside the top-maxAnswers by votes, and surfaces the question's total answerCount (#11)

136 tests pass; bun run devcheck clean.

CHANGELOG v0.1.9