Two issues from Task 7 review:
1. CRITICAL — call_tool "ask" arm called blocking ask handle from async
context. OllamaLanguageModel::new builds reqwest::blocking::Client
which creates+drops a tokio runtime → panic inside async. Fix:
tokio::task::spawn_blocking wrap. Also applied preemptively to
"search" arm (SqliteStore + Lance open are blocking IO too).
2. IMPORTANT — ask tool's retrieval mode hardcoded to Lexical (test
workaround for provider="none"); CLI default is Hybrid. Fix: add
`mode: Option<String>` field to AskInput, default Hybrid in handle,
test passes mode=Some("lexical") explicitly to keep test functional
on provider="none".
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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