Requirements and design approved (design fixed the fork()-vs-posix_spawn
mutex-inheritance-deadlock risk product.md's own "no fork() for
snapshots" decision already rejected); tasks generated but never
approved. Superseded by xce-node-manager after the user decided the
controller should not directly own spawning/killing its own scheduler
process -- a new per-node xce-node-manager component takes over that
responsibility instead. Kept in place as a reference (notably the
fork()-vs-posix_spawn analysis); this spec's tasks.md must not be
implemented (see spec.json's superseded_note).
Checkpointing uncommitted spec work found in this shared worktree.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YAWMhfRJFnmmnG8h97yUDd
