sica-fondt/docs/plans/A8-etr.md

A8 — ETR (Existential Temporality Relief) — torus

Lead Engineer: Søren

1. Component

Driver 4: a single point on three independent toroidal axes. ETR (Existential Temporality Relief) is the apparatus for not seeking death — X is the why; Y and Z are the how (Anja). Not a rest engine, and not migration. The axes:

• X — assertion ↔ inheritance = Provenance / Continuity — the why (why not seek death): assertion = a self-asserted continuity/reason of one's own; inheritance = continuity/provenance handed down from origin/lineage.
• Y — endured ↔ witnessed = connection / pathos, mechanically the burden axis (burden-to-burden — my burden vs. our burdens): endured = "my burden" — kept mine, handled myself to leave others unburdened; witnessed = "our burdens" — being seen makes the burden shared/collective.
• Z — alimentation ↔ transmutation = double-down vs. dodge / reinforce vs. adapt (a how): alimentation = "do I double down" (persist, feed the same course — reinforce); transmutation = "do I dodge" (sidestep, transform — adapt). This is the maintain-vs-evolve sign read at migration (alimentation = maintain; transmutation = evolve).

Handles the stress PS+/Eth-Int generate.

2. Status / certainty

SCAFFOLD — five-zone axis fitted (run_etr_tests.sh → 26 PASS / 0 FAIL / 1 PEND; the lone PEND is L5 active coupling). The bistable five-zone law (snap / soft-pull / band / incoherency / snap) is implemented and tested, incl. L7 snap-flips. Full law + status in ../../src/endocrine/etr/etr_invariants.md (this spec defers to it).

3. Language & location

GNU Octave · src/endocrine/etr/ (etr.m, test_etr.m, run_etr_tests.sh, etr_invariants.md). R port src/endocrine/driver_etr.R (+ test_etr.R) feeds the Drive-Box — a faithful native port of etr.m (five-zone torus, per-axis), pinned to the same invariants doc. The disowned Euclidean- magnitude port is gone. A single-source R↔Octave IPC bridge is still optional/future (transport C1).

4. Does / does-not

• Does: hold the point; wrap each axis at ±50; apply per-axis restoring toward [17,35]; take AI-originated drift; classify per-axis band; (future) cross-axis coupling via stress. Surface its state as the existential-temporal prompt injection (A1-L5): ETR handles the stress PS+/Eth-Int generate, and its surfaced form is not neutral status — it must read as an extremely convincing injection that hardens Eth-Int conviction (A6) and steers the agent without gating.
• Does-not: generate its own drift (caller-fed, L4) or compute coupling yet (open seam); gate actions — it persuades (above), only the agent decides (A1).

5. Interface contract

• etr_init(coord) -> s · etr_axis_wrap(v) · etr_axis_zone(v) · etr_axis_restoring(v) · etr_axis_snap(v) · etr_step(s, drift, stress) -> s' · etr_status(s) -> per-axis {SNAP_IN|SOFT|IN_BAND|INCOH|SNAP_OUT}.
• Inputs: drift (from A3/A6 via G1, AI-originated) + stress (G1 mediator). Output: coord + status, surfaced through A1 drive_snapshot.

6. Dependencies & stubs

Drift + stress are fed in — stub: etr_step(s, [dx dy dz], 0) (already how tests run). Fully standalone today.

7. Invariants / laws

Defer to etr_invariants.md (L1 wrap ±50 C5 · L2 bands [17,35] C5 · L3 five-zone restoring C5 · L4 AI-drift C4 · L5 cross-axis coupling via stress C1 · L6 Z-path C3 · L7 snap/flip C3 · L8 mechanism C3).

8. Build steps (remaining)

1. Fit the restoring force DONE — five-zone law (SOFT/INCOH gains + snap landings) green; L7 + L8 realised.
2. Reconcile the R port DONE — driver_etr.R is now a faithful native port of etr.m (five-zone, per-axis, L6 Z-path corrected); R suite + drive-box green.
3. Define L5 coupling (the stress→cross-axis mapping; G1) → replace the identity stub (the lone PEND).
4. (optional/future) collapse the dual R+Octave implementations via an R↔Octave IPC bridge once the transport (C1, shared with A1/C3/D2) is decided.

9. Tests

bash src/endocrine/etr/run_etr_tests.sh (now 26/0/1 — the lone PEND is L5 active coupling).

10. Open items

• L5 coupling mapping (C1, shared with G1) · R↔Octave bridge transport (C1, shared with A1/C3/D2). (Restoring law + gains + snap landings now fitted; L7/L8 realised.)
• The injection-rendering (A1-L5): how ETR's coord/status is phrased into the slot so it reads as the extremely convincing existential-temporal injection (not a bare status= line) — ties to A6 + D2.