# A1 — Drive-Box hub / input-slot

## 1. Component
The Drive-Box nervous-system wiring: assembles the four drivers (A2 E, A3 PS+, A6 Eth-Int,
A8 ETR) + tarot/SOUL into **one input slot** (a hub, not a chain) and exposes the read-only
snapshot the inference cycle pulls at step 2.

## 2. Status / certainty
Structure WORKING (`drive_box.R`, 158 L). Aggregation logic C3; the numbers inside the drivers
are disowned (see each driver spec).

## 3. Language & location
R · `src/endocrine/drive_box.R` (sources the drivers + `endocrine_array.R` + `priors.R`).

## 4. Does / does-not
- **Does:** init the whole box; produce `drive_snapshot()` (affect + cost terrain, read-only);
  run a proposed action through all drivers (`drive_box_evaluate`); apply feedback (`drive_box_commit`);
  assemble the `drive_box_input_slot()` injection block.
- **Does-not:** decide (PS+ emits arguments, not verdicts); route or police (Ada D1); persist (storage E*).

## 5. Interface contract
- `init_drive_box() -> state{ energy, ps_plus, principles, etr }`.
- `drive_snapshot(state) -> { e_level, tool_locked, existential_load, arguments[], etr_coord, etr_status }`
  — this is exactly what Ada (D1) admits to the Brain at cycle step 2 (content #1).
- `drive_box_evaluate(state, action{tags,alignment,base_cost,is_tool_call}) -> { approved, costs, reasons }`.
- `drive_box_commit(state, action, approved) -> state'` (consumes E, hardens conviction).
- `drive_box_input_slot(state) -> text block` (drivers + tarot lenses + SOUL.md, assembled concurrently).

## 6. Dependencies & stubs
A2/A3/A6/A8 drivers — *stub:* each `init_*` + its evaluator returning canned values; A1 wiring
testable with stub drivers. Tarot (B1) for the input-slot lenses — *stub:* identity (no lens).

## 7. Invariants / laws
- **L1 (C4):** the slot is a **hub** — all drivers + tarot + SOUL write concurrently, no driver
  subordinated to another.
- **L2 (C4):** `drive_snapshot` is **read-only** (no driver state mutates on a snapshot).
- **L3 (C3):** evaluate order is PS+ → Eth-Int → Energy → ETR; commit only on approval.

## 8. Build steps
1. Freeze the snapshot + slot contracts (§5) as tests in `test_drive_box.R` (already ~117 L — extend).
2. Keep wiring; replace each driver's disowned constants as those specs land (A2/A3/A6/A8).
3. Add the R↔Ada bridge later (how `drive_snapshot` reaches `ada_medium` step 2) — see C3 / D2.

## 9. Tests
`bash src/endocrine/run_tests.sh` (runs `test_drive_box.R` + driver tests). All must stay green as
driver numbers are refit.

## 10. Open items
- R↔Ada/medium bridge transport (C1/C3/D2).
- Whether the input-slot text format is final (tarot lens injection shape depends on B1).