v0.8.0

Changed

• Snapshot prefetch is now off by default. Real logs showed 3 prefetch hits in
  3238 navigates: the next call is almost always browser_evaluate, which discards
  the prefetched snapshot, while the background call slowed that evaluate down.
  Restore with PLAYGUARD_PREFETCH_SNAPSHOT=true.
• The bundled Playwright MCP now runs with --codegen none, dropping the
  ### Ran Playwright code block from every response (80–150 chars per call).
  Skipped for a custom PLAYWRIGHT_MCP_CMD or an explicit --codegen; restore
  with PLAYGUARD_CODEGEN=keep.
• browser_evaluate, browser_run_code_unsafe and browser_wait_for descriptions
  carry a one-line hint to batch checks into fewer calls. Disable with
  PLAYGUARD_HINTS=false.

Added

• Log lines for failed calls carry errText (first 200 chars of the error, with
  ANSI colour codes and ### Error headings stripped so the cause fits).
• browser_wait_for logs waitKind/waitTime; browser_run_code_unsafe logs
  codeChars/codeHash/codeSleeps (never the code); screenshots log
  fullPage/type.
• Proxy-level tests against a fake upstream (test/proxy.test.mjs), and
  bench/smoke-codegen.mjs, a real-browser check that evaluate results still
  parse without the codegen block.
• bench/analyze.mjs reports Playwright call patterns: top error texts,
  evaluate→evaluate chains, evaluate latency after navigate, fixed sleeps in
  wait_for and run_code.

Fixed

• A tool call whose upstream threw (rather than returning isError) was never
  logged. It is now logged with thrown: true and still rethrown to the client.