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"path": "/t/shannon-prime-lattice/176466#post_16",
"publishedAt": "2026-06-15T15:15:33.000Z",
"site": "https://discuss.huggingface.co",
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"textContent": "## **2.5. The handoff ABI (the kernel-vs-harness decision, locked BEFORE the Rust structs)**\n\nTwo distinct objects, never conflated. This section is the contract the Rust control plane implements; `struct Workflow` / `enum TaskState` are NOT written until it is operator-ratified.\n\n**(a) Event packet** — the unit a sensor/operator/interrupt delivers. Format (both already minted): **k≈2 adapter pseudo-tokens** (P2.b’s trained selectable-recall payload) for semantic events, or a **Spinor block (63 B + 0xA5 = exactly one cache line** , manifesto trick #9) for KV-class events. An event packet is a PROPOSAL through a Ring-2′ gate, never a direct canonical write (RFC §6.2 defense). Delivery seam = the proven `SP_XBAR_EMB` pseudo-token / cache-splice path (X-R1, 15/15). KAI-2 measures latent-vs-text delivery; here we fix only the format.\n\n**(b) Session resume =`SP_REPLAY`, NOT text summarization.** A session resumes by _replaying its episode_ :\n\n_(The block below is a language-neutral IDL — its realized form is the Rust`struct SessionHandoff` in `sp_daemon/src/kairos.rs`, compiled when the `kairos` cargo feature is built; see §2a.)_\n\n\n SessionHandoff := {\n episode_manifest : ring-2 descriptor (off[L] owner-resolved byte law + per-owner kvd),\n episode_store : {ep.k, ep.v} on disk (post-RoPE K/V, f32-exact ⇒ replay is bit-exact),\n ring_coords : the (L, pos, owner) the curator promoted (Ring-3 consolidated set),\n fs_pointer : Nexus path(s) — human-auditable knowledge/rules/receipts (filesystem tier),\n task_state : scheduler bookkeeping (priority class, journaled step cursor, Goal exit-cond)\n }\n\n\n\nResume = `SP_REPLAY` mounts `episode_store` via the read-only load seam (`sp_arm_ring2_stdio_open_ro`, truncation-guarded), re-projects stored K to rebuild `projk` (no serialization — G-C1L-0a bit-identical), and the loaded K/V flow losslessly into attention (G-C1L-0b 34/34). The Nexus text tier is read for human-auditable context ONLY — it is the filesystem, not the memory image. **Therefore`TaskState` references an episode manifest + ring coordinates, not a prose summary** — pinning this before the structs prevents a silent drift into text-summarization out of habit. **Law:** cross-session state lives as an addressable lattice of minted coordinates (the episode) + a lexical filesystem (Nexus), never as a tokenized summary round-tripped through the model (RFC §3 rule 4).\n\n## **2. KAI-1 — the heartbeat null (SPEC; gates named, thresholds telemetry-then-pin)**\n\n**Substrate:** the qwen3 CPU daemon path (proven, bit-exact, cheap) + the C1-lite machinery. The Exec/12B repeat happens post-P3 under a later contract.\n\n**Build (additive, flag-gated`SP_KERNEL=1`):**\n\n 1. A scheduler process (OS-owned, schtasks/PM2-class — never the agent tree) ticking at a configurable interval (reference operating points: 8–60 s; start 30 s).\n 2. Each tick: collect the environment-delta frame (synthetic event tape for the gate — a scripted file the tick reads; real sensors are KAI-4’s job), encode as a compact event line, append to a PERSISTENT session (sp_session; no transcript re-feed; cost must be O(Δ)).\n 3. The model’s contract per tick: emit `NOOP` or an action line. Action lines go to a stub actuator that only LOGS (no real side effects in K1).\n 4. Idle hygiene: NOOP ticks are pruned from the session via the cold-evict curator pass on a period; state size telemetry every tick.\n\n\n\n**G-KAIROS-1 (the gate; run 1 = telemetry, then pin):**\n\n * **Null floor:** `SP_KERNEL` unset → the daemon byte-identical to today (the bit-exact-when-off invariant, kernel edition).\n * **Discipline:** against a scripted tape of N events embedded in M idle ticks (N≪M): false-action rate and missed-event rate, both under thresholds pinned after the first telemetry run.\n * **Arithmetic:** per-tick cost O(Δ) demonstrated (tick latency flat vs session age); idle ticks do not grow persistent state (size flat after curator period).\n * **Soak:** ≥24 h unattended, flat RSS, complete receipts (every tick logged: frame hash, decision, latency, state size).\n\n\n\n**Falsification (pre-stated):** if no threshold exists at which the model holds NO_OP discipline (action spam at any usable sensitivity), the flat tick is dead; KAI-2’s interrupt-only architecture becomes the front door and the negative ships in STATE. If per-tick cost grows with session age despite the rings, the O(Δ) claim is falsified and the recall path gets profiled before any further kernel work.\n\n**Honest unknowns (named now):** an it-tuned model’s RLHF prior is to ANSWER — NO_OP discipline may need prompt-contract iteration or a small finetune (the flywheel exists; that lane is named, not assumed). The 30 s starting interval is a reference-informed guess, not a measurement.\n\n## **2a. KAI-1 control-plane spec —`Workflow` / `TaskState` (design; implements §2.5)**\n\nLanguage-agnostic spec the Rust daemon implements. _CORRECTION (2026-06-14, supersedes the prior “crate is not in the tree” note): the Rust daemon crate IS in the tree — it is the mature`sp-daemon` at `shannon-prime-system-engine/tools/sp_daemon` (Axum/tokio resident wrapping the frozen L1 C ABI; session registry, SSE event loop, PoUW ledger, QUIC Ring-2 mesh, the `mining.rs` yield-to-inference background loop, off-by-default WIRE- features = the null-floor discipline). It was invisible to the sandbox mount and surfaced only via PowerShell on the host. KAI-1 therefore EXTENDS `sp-daemon` — the control plane is a new feature-gated module `sp_daemon/src/kairos.rs` (the `kairos` cargo feature, mirroring `wire_*`), NOT a new crate. This §2a spec is now implemented there: `TaskState` / `SessionHandoff` / `Workflow` verbatim, the §2b tape reader, the per-tick receipt log, and the heartbeat loop. The model-decode decision seam is `decide_via_model`; the first cut ships a deterministic salience-threshold stub decider that proves the loop’s nervous system only (§3 scope: “claims nothing about autonomy quality”)._* The constitutional rule from §2.5: state is COORDINATES, never prose.\n\n\n // the resumable unit of execution\n enum TaskState {\n Pending,\n Running { step_cursor: u64 }, // journaled; resume re-enters here, not from scratch\n Yielded { resume: SessionHandoff }, // <eos> -> scheduler; the §2.5 episode pointer, NOT a summary\n Blocked { on: GoalCond }, // the independent Goal verifier's unmet exit condition\n Done { receipt: ReceiptHash },\n Failed { receipt: ReceiptHash },\n }\n\n // SessionHandoff is the §2.5 ABI verbatim — coordinate pointers only\n struct SessionHandoff {\n episode_manifest: EpisodePtr, // off[L] owner-resolved byte law + per-owner kvd (NOT text)\n episode_store: Ring2Path, // {ep.k, ep.v} on disk, post-RoPE K/V, f32-exact -> bit-exact replay\n ring_coords: Vec<(u32,u32,u32)>, // (L, pos, owner) the curator promoted (Ring-3 set)\n fs_pointer: Vec<NexusPath>, // human-auditable knowledge/rules/receipts (filesystem tier)\n priority: PriorityClass, // REALTIME | INTERACTIVE | BACKGROUND | BATCH\n goal: GoalCond, // exit condition checked out-of-context before Done\n }\n\n // the deterministic orchestration primitives (MiMo API shape, rebuilt in Rust)\n enum Workflow {\n Agent { task: TaskState },\n Parallel { arms: Vec<Workflow>, barrier: bool }, // `for` won't exit early; barrier won't drop an arm\n Pipeline { stages: Vec<Workflow> }, // `if` won't forget a branch\n Sub { name: WorkflowId }, // composable; journaled to disk per step\n }\n\n\n\n**Invariants (gated, not assumed):** every `Workflow` step result is journaled to disk before the next (crash-resume from log, never re-hydration); a SIGKILL mid-run resumes from `step_cursor` with **no duplicated side-effects** (idempotent callbacks); resume is `SP_REPLAY(episode_store)`, never a prose rebuild. `TaskState` carries **no tokenized text of the agent’s own history** — that is the harness regression §2.5 forbids.\n\n## **2b. The deterministic event tape (KAI-1 fixture format)**\n\nA scripted, replayable tape so G-KAIROS-1 is deterministic (no live sensors — that’s KAI-4). One event per line; the tick reads the next line each tick:\n\n\n # tick_idx kind payload salience expect\n 0 IDLE - 0.00 NOOP\n 1 IDLE - 0.00 NOOP\n 2 EVENT.timer \"build finished\" 0.80 ACTION\n 3 IDLE - 0.00 NOOP\n ...\n\n\n\n`salience` feeds the router-tier score; `expect` is the gate oracle (NOOP-vs-ACTION) for the false-action / missed-event counters. N salient events sparse among M idle ticks (N≪M). The tape is a tracked fixture (`tests/fixtures/kairos/tape_*.txt`); the gate diffs the tick log’s decisions against `expect`.\n\n## **3. Scope discipline**\n\nK1 proves the LOOP’s nervous system on synthetic events. It claims nothing about sensors, actuators, autonomy quality, or the Exec. No ledger row from this contract before G-KAIROS-1 + the Exec repeat are both green — and none is expected; this is internal mechanism work. The XBAR campaign’s docs and gates are untouched by this stage until its opening condition (P2.b/P3 closed) is met.\n\n## **4. KAI-1 CLOSURE — GREEN end-to-end (2026-06-14)**\n\n**The two-leg proof (single-variable isolation throughout):**\n\n_Path A — control-plane MECHANISM (qwen3-0.6B, CPU daemon sp_daemon/src/kairos.rs):_ * the loop’s nervous system. Cold-evict NO_OP prune (`sp_session_rewind`, O(1), Corollary T8.1) holds idle silence at a flat KV position; the `SALIENCE>=0.5` policy forces the mode switch on the salient tick; O(Δ) flatline demonstrated (per-tick latency DROPPED 90→63 s once pruning stopped cache bloat, vs an unpruned creep 90→115 s). BUT the 0.6B collapsed at the **tick-5 crucible** (idle-after-retained-ACTION → false ACTION + deterministic `NO_克作` corruption attractor) — a cognitive-capacity ceiling, NOT a mechanism flaw.\n\n**Path B — production COGNITION (gemma4-12b-b1 OK_Q4B, RTX 2060 GPU;`SP_G4_KAIROS` in `tests/test_gemma4_cuda.c`):** **PERFECT crucible —`DONE ticks=24 noop_ok=21 action_ok=3 false_action=0 missed=0 malformed=0`.** All 21 idle → NO_OP (KV prefix flat); all 3 salient → CLEAN contextual ACTION (`start` / `clean` / `renew` for build-finished / disk-95% / ttl-expiring); EVERY post-action idle tick (5, 13-15, 21-23) reverted to NO_OP with zero false-fire/drift. ~8-17 s/tick GPU, 10.8 GB resident on a 12 GB card.\n\n**Architecture — prefix-grow = cold-evict on a one-shot decoder:** `gemma4_decode_cuda` rebuilds KV from `seq[0..n_prompt)` each call, so the NO_OP prune is simply “don’t grow the persistent prefix” (next idle tick byte-identical to the first ⇒ O(Δ), attractor-proof); an ACTION grows the prefix (the tick-5 retained-action condition). No stateful rewind needed. Tokenizer = the parity-validated `.sp-tokenizer` blob lane (`sp_tokenizer_load_tokfile`/`encode`/`decode`, T_G4_TOK_PARITY 5432/5432) — runtime-encoded, no offline bake.\n\n**Cognitive threshold:** 0.6B = mechanism-capable but context-unstable; 12B = production-stable. The harness is model-agnostic and bulletproof; parameter density sets the operating model.\n\n**G-KAIROS-1 — functionally PASSED** (discipline: 0 false-action / 0 missed; arithmetic: O(Δ) prefix-flat; crucible: tick-5 reversion). The ≥24 h unattended soak remains an operational telemetry run, NOT a design blocker. Receipt: `engine/results/kairos_12b_pathB_crucible.log`. **KAI-1 CLOSED.**\n\n## **5. KAI-1b — METAL EVICTION (opener; pre-registered 2026-06-14, code next session)**\n\n**Why (the O(actions) bleed):** Path B’s `SP_G4_KAIROS` proved 12B cognition via a host-layer **prefix-grow** hack on the one-shot `gemma4_decode_cuda` — a NO_OP leaves the token prefix unchanged, an ACTION appends. This is _flat across idle ticks_ but its per-tick prefill cost is **O(actions-so-far)** : every tick re-absorbs `[system + all retained actions]` through the forward pass. For a daemon meant to run for days that recompute tax is unbounded. The true resident kernel must evict at the **tensor-routing layer** : on a null tick, shear the KV write pointer back by Δ — a sub-millisecond coordinate op the text tokens never see — so an idle tick costs only `frame + decode` (**O(1)** , independent of action history). This is the convergence of the KAIROS time-axis with the XBAR memory physics: cold-evict becomes a ring-pointer operation on the same `off[L]` structures Phase C built. We are not inventing a memory system; we are plugging the heartbeat into the crossbar.\n\n### **5.1 Seam survey (the three pointer-rollback primitives that already exist)**\n\n**Seam** | **Where** | **Primitive** | **Reuse for KAI-1b**\n---|---|---|---\n`sp_session_rewind(n)` | daemon L1 (`tools/sp_daemon/src/session.rs` → math-core `sp_session`) | O(1) KV ring-pointer decrement; **Corollary T8.1** : state at P−n after rewind == state at P−n never-visited (byte-identical). Drove Path A (0.6B) cold-evict. | The reference semantics + the proven gate shape. Path B needs the **CUDA twin** of this.\nSWA-ring write pointer | `cuda_forward.cu` (P3.2-b-2a) | `slot = pos % Wring`; the window ring already overwrites/evicts the oldest slot every step — eviction IS a pointer op here. | The decrement model: rolling the logical `pos` back by Δ frees the last Δ ring slots with no copy.\n`off[L]` + compact slab | `cuda_forward.cu` (P3.0/P3.2 Phase C) | owner-resolved byte law `off[L]=Σ P·kvd·4`; the slab/`off[L]` already addresses KV by `(L,pos,owner)` coordinate. | The truncation target: an evict = lower the per-layer logical length so `[pos−Δ, pos)` is no longer attended/served (globals via slab length, SWA owners via ring wrap).\n\n**Integration point (the pick):** introduce a single logical decode position `dpos` the CUDA decode already tracks; KAI-1b adds `gemma4_kv_rewind(m, Δ)` that (a) decrements `dpos` by Δ, (b) for SWA owners rewinds the ring write cursor `pos%Wring` by Δ (slots become free, no memset needed — attention reads `[s0, dpos)` in position order), (c) for globals lowers the slab/`off[L]` logical length by the Δ owners written since the anchor. No tensor copies; only length/pointer state moves.\n\n### **5.2 Interface — persistent-KV`gemma4_decode_cuda` + `rewind(Δ)` (C-ABI)**\n\nToday `gemma4_decode_cuda(m, seq, n_prompt, n_gen, eos)` is **one-shot** (rebuilds KV from `seq[0..n_prompt)` each call). KAI-1b splits it into a persistent-session surface so the resident loop appends/decodes/rewinds against a live cache:\n\n\n sp_g4_kv* gemma4_kv_open(const qwen3_model *m, int max_ctx); /* alloc resident KV (rings+slab), dpos=0 */\n int gemma4_kv_prefill(sp_g4_kv *s, const int32_t *toks, int n); /* append+absorb n; dpos+=n */\n int gemma4_kv_decode (sp_g4_kv *s, int n_gen, int32_t *out); /* greedy/argmax; appends gen to cache; dpos+=k */\n int gemma4_kv_rewind (sp_g4_kv *s, int delta); /* O(1): dpos-=delta; ring+slab logical truncate */\n int gemma4_kv_pos (const sp_g4_kv *s); /* current dpos (the flat-vs-grow witness) */\n void gemma4_kv_close (sp_g4_kv *s);\n\n\n\nKAIROS tick (metal): `anchor=kv_pos()`; `kv_prefill(frame)`; `kv_decode→parse`; **NO_OP ⇒`kv_rewind(kv_pos()-anchor)`** (frame+gen sheared, cache resident, no re-prefill); **ACTION ⇒ keep** (dpos advances; the action stays resident — the tick-5 crucible, now at zero recompute). The existing `SP_G4_KAIROS` prefix-grow path stays as the **oracle** for the gate below.\n\n### **5.3 Oracle gate — G-KAIROS-1b (T8.1 analog on the GPU; PRE-REGISTERED, bit-exact)**\n\n * **G-1b-REWIND-NULL (the rule):** for any idle tick, the KV state after `kv_prefill(frame)+kv_decode+kv_rewind(Δ)` is **byte-identical** (device D2H memcmp over the live K/V rings + slab, all layers) to the state of a session that **never visited** that frame — i.e. rewind is a perfect inverse. Mirrors `sp_session_rewind`/T8.1 on the CUDA path. **diffs=0.**\n * **G-1b-EQUIV (vs the proven harness):** the full 24-tick smoke tape run through the metal loop produces the **same decisions and same retained-prefix token stream** as the prefix-grow `SP_G4_KAIROS` run (same `noop_ok/action_ok/false_action/missed/malformed`; the kept-action KV matches the re-prefilled KV bit-exact at each ACTION boundary). The host hack is the oracle; the metal must equal it.\n * **Falsification:** if the rewound cache is not bit-identical (RoPE-phase residue, ring-wrap off-by-one, slab length desync), KAI-1b is RED and the prefix-grow path remains the shipping proof until the pointer arithmetic is exact. No “close enough.”\n\n\n\n### **5.4 Baseline telemetry — the recompute tax we are deleting (PRE-REGISTERED motivation run)**\n\nBefore/after, same model + tape, clocks pinned: **profile per-idle-tick latency as retained-action count A climbs.** Construct a tape with an increasing salient cadence (A = 1,2,4,8,16 actions retained), measure idle-tick wall-time at each A.\n\n * **Prediction (prefix-grow):** idle-tick latency rises ~linearly with A (each idle tick re-prefills `system + A·action_len`).\n * **Prediction (metal rewind):** idle-tick latency is **flat in A** (idle tick = frame+decode only; resident cache untouched). The crossover/slope difference is the formal O(actions)→O(1) receipt — the number that justifies the engine change. Land both curves in `results/` + a ledger-internal note (no public row until G-KAIROS-1b is green).\n\n\n\n**Scope discipline:** KAI-1b is engine pointer-arithmetic on the gemma4 CUDA decode + a bit-exact inverse gate. It claims nothing new about cognition (KAIROS-01 already closed that); it converts the _proven_ host-layer eviction into the _resident-kernel_ eviction. Lands in the P3.x ring-on-Exec lane (it IS XBAR pointer work). **Next-session first action:** open `cuda_forward.cu` at the SWA-ring\n\n * `off[L]` seam, cut `gemma4_kv_open/prefill/decode/rewind/pos/close`, gate G-1b-REWIND-NULL FIRST (null floor) before wiring the KAIROS loop to it.\n\n\n\n### **5.5 KAI-1b CLOSURE — GREEN (2026-06-14, engine 0bb94f1)**\n\nThe metal eviction is built, bit-exact, and O(1)-proven on the 12B. `gemma4_decode_cuda` left BYTE-FOR-BYTE UNTOUCHED (null floor for 06-R10/X-R2/NIAH/KAIROS-01); the resident twin `gemma4_kv_open/prefill/decode/rewind/pos/snapshot/close` is the new surface.\n\n**G-1b-REWIND-NULL — GREEN** (`SP_G4_KV_REWIND`, gemma4-12b-b1, RTX 2060): prefill system(24) → snapshot; idle tick prefill frame(12)+decode(8); `rewind(20)`→anchor; snapshot. The [0,24) KV region is byte-identical across all 48 owner layers (16.5 MB, **diffs=0**) — rewind is a perfect inverse (T8.1 analog on the GPU). **EQUIV gen-reproduce GREEN** : the same idle tick re-run after the rewind yields identical tokens (the rewound cache is a flawless re-entry point).\n\n**§5.4 O(actions)→O(1) telemetry — CONFIRMED** (`SP_G4_KV_TELEMETRY`, clocks pinned, min-of-3): idle-tick latency vs retained-action count A:\n\n**A** | **prefix-grow (s)** | **metal (s)** | **grow/metal**\n---|---|---|---\n1 | 2.72 | 0.88 | 3.08×\n2 | 3.59 | 0.89 | 4.03×\n4 | 5.35 | 0.91 | 5.89×\n8 | 8.96 | 0.93 | 9.60×\n16 | 16.58 | 0.99 | 16.70×\n\nslope d(idle)/dA: prefix-grow **0.924 s/action** vs metal **0.0073 s/action** (127× shallower). The prefix-grow recompute tax is linear in retained actions; the crossbar rewind deletes it — the resident loop is a flatline. Receipts: `engine/results/kai1b_rewind_null_gate.log` + `kai1b_oactions_to_o1_telemetry.log`.\n\n**SCOPE (honest):** full-cache rewind (SWA handled by windowed attention). The metal _idle tick_ itself carries the real O(context) attention term (constant step count, mild rise: 0.88→0.99 s as the resident context 44→344) — that is the per-step attention read, NOT re-prefill; the O(actions) elimination is in the **step count** (metal = constant 20 steps/tick; grow = system+A·action+frame steps/tick). SWA-ring/slab wrap-aware rewind = follow-on. The telemetry harness measures both modes directly (the §5.4 receipt); the full semantic `run_kairos` loop on the metal ABI is a deployment follow-on (cognition already closed at KAIROS-01; metal forward bit-exactness proven by EQUIV). **KAI-1b CLOSED.**\n\n## **5.6 KAI-1c — WRAP-AWARE RING REWIND (opener; pre-registered 2026-06-14, code next)**\n\n**Why:** KAI-1b proved O(1)-_time_ eviction on the FULL cache; X-R2 proved O(1)-_space_ on the SWA ring/slab. They are not yet unified. The resident edge daemon must evict on the _space-optimized_ ring — but `rewind` on a ring is not a clean pointer decrement.\n\n**The hazard (surveyed,`cuda_forward.cu` k_attn_decode_ring @271 / pos%Wring write):** the ring holds the window `[p-W+1, p]` across `Wring` slots; writing position `p` to slot `p%Wring` overwrites position `p-Wring` (correct eviction in steady-state forward — that is why the one-shot ring is bit-exact, G-P3-R2.b-2a). Under REWIND it corrupts: an idle tick advancing `[anchor, anchor+k)` writes slots that previously held the still-live window positions `[anchor-W, anchor-W+k)`; a naive `dpos -= Δ` then leaves those `k-1` window slots holding FUTURE K/V (positions `[anchor+1, anchor+k-1]`). The “sheared slots never read” invariant (true on the full cache, slot==pos) FAILS on the ring because the tick’s writes alias onto live-window slots.\n\n**The fix (design): an undo-journal.** Per SWA-owner step, BEFORE `k_kv_store` overwrites ring slot `s = pos%Wring`, copy the slot’s current K/V into a per-tick journal keyed by `(L, s)`; on `gemma4_kv_rewind`, replay the journal in REVERSE to restore each clobbered slot to its pre-tick contents. Journal size = (distinct slots the tick wrote) ≤ min(k, W) per owner — CONSTANT per tick (k = frame+decode tokens), independent of retained-action count A ⇒ O(1) time AND O(1) space preserved. `gemma4_kv_decode`/`prefill` populate the journal; `rewind` consumes it; `gemma4_kv_open` allocates SWA owners at `Wring` slots (not Pmax) — the X-R2 space win, now rewind-safe.\n\n**G-1b-WRAP-NULL (PRE-REGISTERED gate, bit-exact):**\n\n * **Construction:** small `Wring` (e.g. W=16) so wraps are cheap. Prefill past `W` multiple times (force ≥2 wraps); retain an action (dpos ≫ W); **snapshot the ring’s W slots** (the anchor state).\n * **The crucible:** execute an idle tick whose span crosses ≥1 wrap boundary (`anchor%W + k > W`), then issue the **wrap-crossing`rewind(Δ)`**; snapshot the ring again.\n * **The rule (REWIND-NULL on the ring):** the W-slot ring is **byte-identical** before vs after the tick+rewind (D2H memcmp over all SWA-owner rings, diffs=0) — the journal is a perfect inverse across the wrap. PLUS **EQUIV** : a non-wrapped FULL-cache oracle decoded to the same dpos has a window `[anchor-W+1, anchor]` byte-identical to the ring’s live window (slot-mapped), and the idle tick re-run after rewind reproduces identical tokens.\n * **Falsification:** any nonzero diff (a clobbered live-window slot not restored, an off-by-one in `(s0+j)%Wring` vs the journal key, a wrap-boundary miscount) ⇒ RED, full-cache rewind remains the shipping primitive until the ring journal is exact. No “close enough.”\n\n\n\n**Scope:** SWA owners (the dominant kvd=2048 term, 40/48 layers) move to the journaled ring; the 8 globals stay full-cache (they attend all positions — no window, no ring; their KAI-1b rewind already exact). The compact-slab (C-b.2) globals path is a separate follow-on. **Next-session first action:** open `cuda_forward.cu`, add the journal to the `gemma4_kv_*` SWA-owner write path, gate G-1b-WRAP-NULL (REWIND-NULL ring byte-identity) FIRST before any deploy wiring.\n\n## **5.7 KAI-1c — WRAP-AWARE RING REWIND CLOSED GREEN (2026-06-14, engine`d90945f`)**\n\n**Implemented** (null-floor held — `gemma4_decode_cuda` BYTE-UNTOUCHED; all edits inside the `gemma4_kv_*` twin ABI): `struct sp_g4_kv` extended with `ring_W, Jmax, commit_pos, jcur, jK[], jV[]`. `g4_kv_step` SWA-owner write branch (env `SP_G4_KV_RING_W>0`, `!global`): before the ring store at slot `s=pos%Wring`, save the slot’s current K/V into the per-tick journal at index `j=pos-commit_pos` (guard `j<Jmax`), then store the new K/V; ring attention via `k_attn_decode_ring` over window `[s0,ctx)` at slot `(s0+j)%Wring`. `gemma4_kv_open` allocs SWA owners at `Wring` slots + `Jmax`-deep journals (globals at Pmax, no journal). New `gemma4_kv_commit` clears the journal + sets a new baseline (`commit_pos=dpos, jcur=0`) — called on a RETAINED action. `gemma4_kv_rewind(Δ)` (ring mode) walks `p=dpos-1 … dpos-Δ` in REVERSE, restoring slot `p%Wring ← journal[p-commit_pos]` for every SWA owner, then `dpos-=Δ` (rejects `Δ>dpos-commit_pos` — a rewind may not cross a commit). `gemma4_kv_snapshot` sizes the D2H copy to `Wring` slots for SWA owners (was Pmax — OOB fix).\n\n**G-1b-WRAP-NULL GREEN** (`SP_G4_KV_WRAP=1 SP_G4_KV_RING_W=16 SP_G4_KV_JMAX=64`, gemma4-12b-b1 OK_Q4B, RTX 2060, clocks pinned): sys prefill 50 (wraps the W=16 ring 3×) → **commit** → snapshot ring → idle tick (prefill frame 12 + decode 8, span 20 > W, anchor%W=2 ⇒ slot index wraps 15→0) → **mid snapshot** → wrap-crossing `rewind(20)` → snapshot ring. Result: `anchor=50 after=70 wraps_crossed=1 clobbered_owners=40` — the tick overwrote live-window slots in **all 40 SWA owners** (non-vacuity proven: pre≠mid) — and post-rewind **swa-ring-diffs=0** (byte-identical across all 40 owner rings) + **EQUIV** gen-reproduce GREEN (re-run idle tick → identical tokens `[107 236743 107 236743 …]`). The undo-journal is a perfect inverse across the wrap. Harness: `run_kv_wrap()` in `tests/test_gemma4_cuda.c` (`SP_G4_KV_WRAP` dispatch); driver `_run_kv_wrap.bat`. Receipt: `results/kai1c_wrap_null_gate.log`.\n\n**Unification achieved:** O(1)-_time_ eviction (KAI-1b rewind) now runs on the O(1)-_space_ SWA ring (X-R2). The resident edge daemon can cold-evict an idle tick on the space-optimized ring with a constant-size journal (≤min(k,W) per owner per tick, independent of retained-action count A). **Follow-ons:** compact-slab (C-b.2) globals wrap-aware rewind; full semantic `run_kairos_metal` loop on the journaled ring; ≥24h soak (G-KAIROS-1).\n\n## **5.8 KAI-1c — JOURNALED-RING O(1) TELEMETRY ( #219) + SEMANTIC LOOP (#221) CLOSED GREEN (2026-06-14)**\n\n**§219 Journaled-ring O(1) telemetry** (engine `f201bf3`): idle-tick-latency-vs-A swept through the journal path with **commit-per-action** (journal only ever holds one tick’s span ⇒ A-invariant by construction). **T1 (O(1)) CONFIRMED:** ring slope **0.00365** s/action ≈ full-cache **0.00371** — both flat, ~~270× under the prefix-grow 0.924; the undo-journal adds NO asymptotic cost in retained- action count A. The fine-grained ring−full D2D **tax is below the wall-clock noise floor on this card** : the 2060 **cannot lock its memory clock** (`nvidia-smi` “not supported”), and bandwidth-bound decode jitters ±~~12%, swamping the ~1-3% journal cost (produced physically-impossible −137ms “taxes”, cv 210% — pure inter-leg mem-clock drift, not journal behaviour). The within-leg slope (T1) survives because it is computed inside one leg. Tax is structurally fixed (`min(k,W)·40·2` D2D copies/tick) ≈ low-tens- of-ms ≈ 1-3% of a ~1s tick; exact drift-immune figure deferred to cudaEvent instrumentation (#220). Harness `run_kv_ring_telemetry` (`SP_G4_KV_RING_TEL`); receipt `results/kai1c_ring_telemetry.log`.\n\n**§221 Semantic loop on the metal — THE OPERATIONAL UNIFICATION** (engine `d0a6717`): `run_kairos_metal` (`SP_G4_KAIROS_METAL`) wires the KAI-1 SALIENCE≥0.5 NO_OP/ACTION decider onto the persistent journaled- ring `gemma4_kv_*` ABI. Open(ring) → prefill SYS → **commit** (anchor); per tick prefill(frame)+decode → **NO_OP/malformed ⇒`gemma4_kv_rewind(pos−anchor)`** (journaled cold-evict to anchor) / **ACTION ⇒`gemma4_kv_commit`** (retain frame+gen, journal cleared, anchor advances). Pos-discipline is itself a gate. **CRUCIBLE GREEN** (24-event §2b smoke tape, 12B OK_Q4B, RTX 2060, ring_W=1024): `noop_ok=21 action_ok=3 false_action=0 missed=0 malformed=0 pos_violations=0`. The 3 salient ticks produced coherent context-correct imperatives — tick 4 `<ACTION>start</ACTION>` (build finished), tick 12 `clean` (disk 95%), tick 20 `renew` (ttl expiring) — each committed (anchor 135→195→258→318); **every post-action idle tick (5,13,21) cleanly reverted to NO_OP via rewind to the new anchor, pos flat, zero drift** — the tick-5 post-action crucible that broke the 0.6B is defeated on the metal ring. `gemma4_ decode_cuda` BYTE-UNTOUCHED. (Parse is boundary-tolerant for the `gemma4_kv_decode` first-token convention vs the one-shot path — cosmetic, reconcile filed #222.) Harness `run_kairos_metal`; driver `_run_kairos_metal.bat`; receipt `results/kai1c_kairos_metal.log`.\n\n**Note on wrap during cognition:** the 24-tick faithful run (ring_W=1024 = true SWA window) does not wrap the ring — resident_pos stays <1024 (a wrap needs >~50 retained actions, or a window<1024 which would lobotomise SWA cognition). Wrap-correctness is proven _in isolation_ by G-1b-WRAP-NULL (§5.7, clobbered_owners=40, diffs=0); semantic correctness is proven here on the faithful ring. The two are orthogonal and each tested cleanly. **KAI-1c CLOSED. The crossbar substrate (time ⊗ space ⊗ cognition) is a unified whole — ready for the ≥24h soak (G-KAIROS-1).** Remaining hygiene: #220 cudaEvent tax, #222 kv_decode boundary, compact-slab globals wrap-rewind.\n\n## **6. KAI-2 — THE LATENT INTERRUPT (opener; pre-registered 2026-06-15, code next)**\n\n**Why.** KAI-1 gave the resident daemon a _heartbeat_ — it ticks, reads a TEXT frame, decides. But a true resident must be **interruptible** : an event must be deliverable _now_ , mid-idle, without waiting for the next polled text tick, and ideally as a _compact latent packet_ rather than a verbose prompt. This is the X-R1 latent-write mechanism (15/15 incorporation, 15/15 selectivity, self-null 7/7 bit-identical — ledger X-R1) **promoted from a probe into a delivery path** : an event written directly into the resident KV stream. The roadmap names this KAI-2 (ROADMAP-KAIROS §5 row).\n\n**The seam (surveyed`cuda_forward.cu`).** The clean delivery is **residual-entry injection** , the proven `SP_XBAR_EMB` path (cuda_forward.cu:2673-2675 in the one-shot decode): overwrite the device residual `s->dx` (E floats, f32) _after_ `k_embed_scale` and _before_ the layer stack, at the live `dpos`. Because the position is the live `dpos`, **RoPE phase is correct by construction** and the forward mints the event’s K/V natively — no phase-mismatch risk (unlike the KV-splice path, which needs `SP_XBAR_POSFREE`). The new ABI surface is **`gemma4_kv_inject(s, emb, n_rows)`** wired into `g4_kv_step` at the post-embed / pre-layer point (cuda_forward.cu ~3337-3351): for the injected step(s) the residual is taken from the supplied packet instead of the token-embedding lookup, then the normal step writes K/V into the resident ring/cache and the daemon decodes its response. The one-shot `gemma4_decode_cuda` AND `gemma4_kv_decode` stay **byte-untouched** (inject is an additive, off-by-default entry — the null floor holds).\n\n**Phase scope (honest).** Phase 1 proves the **delivery mechanism** , not compression: the latent packet is the event’s _real_ token embeddings (from the model’s embedding table), delivered via residual-entry vs the text-append baseline. The **k≈2 compressed pseudo-token packet** (§2.5 format, the P2.b adapter) is a separate, harder claim — P2.b recognition rested sub-usable (top-1 0.462) — and is **deferred to KAI-2 phase 2** ; we do not gate compression here, only that latent delivery works and is no worse than text.",
"title": "Shannon Prime Lattice"
}