v0.3.0

The observation layer's core: foreman now tells you what every agent is doing — working,
waiting for you, done, or gone — without attaching. Built on the testing foundation laid the
same day (25+ Go tests behind a tmux seam, CI on every PR), and shaken down live against real
Claude Code sessions, including a genuine permission prompt.

Fixed

• Scripted new no longer prompts (or worse, auto-goes). /dev/null is a character
  device, so the old TTY check misfired on fm <p> new <role> < /dev/null — showing the
  go to X? [Y/n] prompt, reading EOF as default-yes, and failing with open terminal failed.
  Now uses a real terminal check, and an EOF/read error on the prompt never means yes. Found by
  the observation-layer live shakedown. Closes #28.

Added

• Observation: reliable participant states. New State snapshot in core — exited (pane
  dead), done (the role's command finished and dropped back to the shell), shell (manual
  terminal), else working. Computed fresh from the tmux server on demand, nothing stored.
  Closes #1.

• Observation: the waiting state. An agent that wants your attention is detected
  title-first — Claude Code sets a braille spinner while busy and ✳ when idle — with a
  small, table-tested pane-content fallback (selector cursor, [y/n] prompts in the last
  visible lines) for agents that don't announce themselves. Defaults to working when unsure.
  Closes #2.

• Participant state in foreman list. The project list gains a STATE column next to the
  pane title; the global list marks only the states that want a glance on the role tag —
  planner⚠ (waiting), build○ (done) — so working stays visually quiet. Closes #3.

• CI. A GitHub Actions check workflow runs make check (gofmt + vet + test) on every PR
  and push to main — the automated version of the workflow doc's PR gate. Closes #21.

• Tests for internal/core. Table-driven tests for project inference (projectByRoot,
  CurrentProject — all three sources), config parsing, WorkDir precedence, window/status
  parsing and FindWindow's role-beats-name rule, ListProjects sorting/filtering, HumanAge,
  and WindowStatus. Tmux-facing code is tested through a new seam (tmuxRun) that feeds
  canned tmux output — the same seam the observation layer will build on. make check has
  teeth now. Closes #20.