poc-memory status: add ratatui TUI dashboard

Per-agent-type tabs (health, replay, linker, separator, transfer,
apply, orphans, cap, digest, digest-links, knowledge) with dynamic
visibility — tabs only appear when tasks or log history exist.

Features:
- Overview tab: health gauges (α, gini, cc, episodic%), in-flight
  tasks, and recent log entries
- Pipeline tab: table with phase ordering and status
- Per-agent tabs: active tasks, output logs, log history
- Log tab: auto-scrolling daemon.log tail
- Vim-style count prefix: e.g. 5r runs 5 iterations of the agent
- Flash messages for RPC feedback
- Tab/Shift-Tab navigation, number keys for tab selection

Also adds run-agent RPC to the daemon: accepts agent type and
iteration count, spawns chained tasks with LLM resource pool.

poc-memory status launches TUI when stdout is a terminal and daemon
is running, falls back to text output otherwise.

poc-memory/src/lib.rs

@@ -19,6 +19,7 @@ pub mod neuro;
 
 // Agent layer (LLM-powered operations)
 pub mod agents;
+pub mod tui;
 
 // Re-export agent submodules at crate root for backwards compatibility
 pub use agents::{