Counter ASIC 2.0 status 20:58: PC 1 and PC 2 occupancy

docs/plans/counter-asic-2-status.md

@@ -263,3 +263,5 @@ PC 2 queue: the ca2 node suites on the merged tree (ca2-v3-node + ece42979) as s
 ## 20:57 the mixer construction is committed on ca2-v3's base
 
 ca2-mixer 0fc0ad1 (rebased onto ca2-v3 6c75dad): LoadClass::MX4 = V3_CLASS (v2 loads, mixer x4, the growth rule; a class v3 program is the v2 program of its seed instruction for instruction, generator 3 in its id); chain_dataset_day has its real body (Shape::for_class_day: cache 2^cache_log2_words(d), dataset 2^dataset_log2_words(D_0, d)); 44 lib + 11 pack tests green, the two pinned v2 packs byte for byte. Next from it: --program-class v3 / --era-hex on the CLI, the pinned v3 packs mx4-genesis and mx4-devnet-epoch0 (era = the genesis-hash stand-in), the design and 1.8.5 spec text, the chip-model row; bit-exactness runs under the run lock now; the verifier and build timings wait for the measure lock (held by a live prover measurement from another worktree, pid 45000, 25 min in at 20:56). The node agent merges ca2-mixer before its fast-time gate, so the gate runs the real construction minus the era and hot fields.
+
+20:58. PC 1: cpu-prove-pc1-small2 running since 20:54:02 (CPU only). PC 2: a fetch job from the aggregation-cost agent (job-fetch-prove-aggcost, 20:55:39) landed after the proving agent's release, so PC 2 is NOT idle for the ca2 suites until that agent's run closes; the suite publish checks `node tools/jobs.mjs status` for an idle PC 2 first. Readiness in hand: the repro benchmark (8 min, 5090 then gfx1036) waits for a gap; the 5090 power sweep (8 min) follows the era job; Ember Tune's build (8 min, CPU) and run (30 min, both cards) follow; the S_p CPU shard (up to 90 min) is last.