AgentHUD

Fixed

• --open no longer fails silently on WSL. Spawning the OS
  opener with stdio: "ignore" + immediate process.exit() meant
  the user never saw the spawn error when xdg-open was missing
  (typical on a headless WSL) or exited non-zero. openInDefaultApp
  now (1) sync-checks the command is on PATH, (2) prefers wslview
  when WSL is detected and the binary is installed, (3) waits up to
  200ms for the spawned child to fail fast and surfaces both error
  events and non-zero exit codes on stderr.
• summary on a day with zero activity no longer spends LLM
  tokens. report --date today already returns "No activity
  found"; summary was happily piping that empty payload to claude
  for a useless answer (and -o opened an empty page). The daily
  path now matches the range path's "no activity → skip" behavior:
  writes a stub to the cache, prints a clear stderr line, returns
  success without spawning claude.

Added

• Smoke (Windows) workflow. Manual-trigger CI job that
  exercises the real CLI on a Windows runner (agenthud --version / --help / --once / --cwd / report / summary against a faked
  session and a pre-seeded cache file). The unit-test matrix already
  covered Windows, but it can't catch path-separator regressions in
  stderr labels, cmd /c start quoting, or the filesystem side of
  regenerateIndex — this one can. Trigger from the Actions tab.
• README "Platform notes" paragraph clarifying that macOS and
  Linux are the daily-driver targets, Windows is best on WSL2
  (Anthropic's recommendation for Claude Code itself), and native
  PowerShell may need an ExecutionPolicy adjustment for any
  npm-installed CLI.

Fixed

• Windows: prompt = ... stderr line used backslash separators.
  formatPromptSource now normalises its output to forward slashes
  so the user-facing label reads as ~/.agenthud/summary-prompt.md
  on every platform. (Pure cosmetic on POSIX; lets the Windows
  CI tests pass.)

v0.12.0 was tagged but never reached npm — the Windows test job in
CI caught this issue before the publish step ran. v0.12.1 is the
first 0.12 release on npm.