predxt 0.3.0: guided first orderbook

predxt 0.3.0: find a market and read its first orderbook

This release adds a guided first-run workflow for Polymarket. Search by name,
choose a market and outcome, and get an orderbook snapshot without manually
looking up the outcome's token ID.

pip install "predxt>=0.3.0"
predxt demo
predxt explore polymarket --query "bitcoin"

• predxt demo displays a clearly labelled synthetic orderbook, without network
  access, credentials, or repository files. --json emits structured output.
• predxt explore polymarket shows one REST snapshot and prints a WebSocket
  command with the selected token ID. API requests have a configurable deadline;
  scripts can pass --market-id, --outcome-index, and --json.
• Polymarket text search now uses Gamma's documented /public-search endpoint.
  It flattens event markets, removes duplicate IDs, retains raw payloads, and
  supports keyword-only active_only=True. Results come from the first page;
  nonpositive limits now raise ValueError.
• First-run documentation and installed-wheel CI checks cover the complete
  onboarding path, including unavailable markets, invalid selections, and API errors.

Python 3.12 or later is required. Existing REST and WebSocket imports remain
available. This release continues the read-only market-data scope.

First-run guide ·
PR #14 ·
Full changelog