Replaces the original child_id-keyed tool set with a soloterm-inspired
process-entry model: opaque process_ids, three kinds (agent/terminal/command),
session-persistent command entries with disk-persisted trust grants, and a
single bidirectional send_message in place of the send_message_to /
report_to_parent split. Adds whoami, help, get_project_status, rename_process,
select_process, close_process, search_output, get_process_ports, and a richer
send_input with key/paste support and optional wait_ms tail. Updates §3
(trust.json), §8 (self-discovery via whoami/help), §9 (renamed tools in the
permissions loop), §11 (idle exposed via list_processes), §14 (resolves the
scratchpad-revision and trust-persistence questions, opens content-hashed
trust), and §15 (build-order tool names).
