By default <think>...</think> blocks emitted by thinking-capable models
are silently stripped from the answer before printing. With --think,
thinking blocks are routed to stderr (with tags preserved) and the
clean answer goes to stdout.
- src/io/think-filter.ts: ThinkChunkFilter (stateful streaming filter
that handles partial tags split across chunk boundaries), stripThinkBlocks
and extractThinkBlocks for bulk non-stream processing; \r\n-aware
- stream-handlers.ts: ChatStreamPrinter and CompletionStreamPrinter use
ThinkChunkFilter; streamPrinterFor(mode, think=false) backward-compat
- streaming-structured.ts: post-collect strip/extract on resp.answer
- streaming-text.ts + print-flags.ts: ctx.think threaded through
- run.ts, resume/run.ts, _strategies/index.ts: think field in types
- run/app/index.ts, resume/index.ts: --think oclif flag, default false
oclif v4 warns "did not parse its arguments" for any command class whose
run() never calls this.parse(ClassName), independent of whether the
command declares args/flags. Add the call in the five arg-less commands.
