cc-research 1.1.3: double the researcher turn backstop (maxTurns 8 → 16)

Raises the researcher turn backstop so a normal deep strand isn't cut off mid-work before it writes its evidence files.

Changed

• maxTurns for researcher and local-researcher raised from 8 to 16. The hard turn cap is a runaway backstop, but at 8 it sat below the soft "≤ 8 tool calls" budget — a turn batches several tool calls, so 8 turns is fewer than 8 calls' worth of room — and could stop a researcher before it persisted its sources-*.jsonl / claims-*.jsonl. Doubling it to 16 gives clearance so the backstop only catches a genuine runaway; the soft ≤ 8 tool-call budget stays the everyday governor, and the orchestrator's maxTurns: 60 is unchanged. The Agent SDK inherits this automatically through the shared agent definitions.

Unchanged

• The ≤ 8 tool-call soft budget, ≤ 5 web researchers/wave, ≤ 2 waves, ≤ 3 local researchers, and the [#id] / per-strand / tier substrate. The independent Codex plugin (plugin-codex/, 1.2.0) is unaffected — its spawned researchers are soft-budgeted only, with no hard turn cap to raise.

Update: plugin users run /plugin marketplace update; SDK users pipx install --force "git+https://github.com/richer-richard/cc-research.git#subdirectory=sdk".