# HLDP recursive tree engine

This is the bounded read/review engine shared by persona memory controllers. It is not the current-memory controller and it does not own a host-specific memory canon. The current Zhuyuan real-day writer and day/month/year projections live in `../persona-daily-fractal-memory/`.

- `bootstrap`: emits at most 2 KiB of protocol navigation, never memory content.
- `verify`: validates a recursively addressed causal tree and the 10-child limit.
- `review`: reviews one leaf or the full tree for causal transitions, non-generic why, rejected-route reasons, and retrievable sources. It reports problems to the current model; it never writes memory itself.
- `route`: ranks only the current node's child summaries and returns at most three paths.
- `read-node`: reads one selected node with a hard byte limit.

The optional Codex hook is valid only for `SessionStart`. There are intentionally no user-prompt, tool-use, pre-compact, or post-compact hooks. Host adapters may signal an event or compaction boundary, but only the persona-authored daily controller may write causal memory.

```bash
node server-tools/codex-hldp-recursive-memory/hldp-memory.mjs bootstrap
node server-tools/codex-hldp-recursive-memory/hldp-memory.mjs verify --tree memory.json
node server-tools/codex-hldp-recursive-memory/hldp-memory.mjs review --tree memory.json --path root/decision
node server-tools/codex-hldp-recursive-memory/hldp-memory.mjs route --tree memory.json --query "why did the plan change"
node server-tools/codex-hldp-recursive-memory/hldp-memory.mjs read-node --tree memory.json --path root/decision
node --test server-tools/codex-hldp-recursive-memory/hldp-memory.test.mjs
```