* chore(daemon): takeover notice, dev state-dir pruning, session state-dir command surface
Implements the three follow-ups from #737:
1. Print a one-line stderr notice when the client replaces a running
daemon, stating identity and reason (version mismatch, code-signature
mismatch, or unreachable). Best effort; never fails the command.
2. Add 'pnpm clean:daemon --prune-dev' to remove worktree-scoped state
dirs under ~/.agent-device/dev/ that no live daemon owns (same
pid/start-time liveness check as server-lifecycle) and that have been
idle for 14+ days. Scoped dirs only; one line printed per removal.
3. Fold 'session state-dir' into the regular command surface: the
session contract resolves it locally via the new
client.sessions.stateDir(), the cli.ts pre-dispatch special case is
removed, and the MCP session tool now exposes the state-dir action.
Closes#737https://claude.ai/code/session_013WBrUjQ4WRxRkfVruALKX3
* docs: surface clean:daemon --prune-dev in AGENTS.md
Local agents discover daemon state-dir hygiene through AGENTS.md, not
the website docs, so document the prune flag next to the existing
worktree-scoped state-dir guidance.
https://claude.ai/code/session_013WBrUjQ4WRxRkfVruALKX3
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Co-authored-by: Claude <noreply@anthropic.com>
Michał Pierzchała