The node-engine holds the node's one build CPU share as its own config (ADR 0553 §3, round 2)

The share belongs to the part that enforces it: build-cpu-share, default 50,
set per node through the node's settings layer and read by the composer for
the build seats' runtimes. Pin mesh-sdk at fix/build-cpu-yields' head.

go.mod

@@ -3,7 +3,7 @@ module github.com/novox/mesh-host
 go 1.26.0
 
 require (
-	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026132226-36c92861d207
+	git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026133939-527d87613eb2
 	github.com/nats-io/nats-server/v2 v2.11.17
 	github.com/nats-io/nats.go v1.54.0
 	golang.org/x/crypto v0.57.0

go.sum

@@ -1,5 +1,5 @@
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026132226-36c92861d207 h1:up88FwKjL9hfVbwMv9THSLOMzk7Rv1Cr02ZqjUzx4XY=
-git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026132226-36c92861d207/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026133939-527d87613eb2 h1:wyOoONFYpcgLr2IueawZHyRM8vogkltXNrjgajGo3hM=
+git.novox.be/novox/mesh-sdk/go v0.1.14-0.20261026133939-527d87613eb2/go.mod h1:ouERNpZizzwZ0HLEtAypsY9FR20FyUgUYRni6J7kVCY=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op h1:Z/MZK75wC/NSrkgqeNIa7jexam9uWzhLmFTSCPI/kn0=
 github.com/antithesishq/antithesis-sdk-go v0.7.0-default-no-op/go.mod h1:FQyySiasQQM8735Ddel3MRojmy4dA1IqCeyJ5jmPMbI=
 github.com/google/go-tpm v0.9.8 h1:slArAR9Ft+1ybZu0lBwpSmpwhRXaa85hWtMinMyRAWo=

module.json

@@ -22,6 +22,14 @@
       "type": "string",
       "description": "The operator's public keys, ed25519 in base64, one a line: the node applies a composition made by hand only when one of these signed it (ADR 0539 clause 3). Public keys, no secret. Empty trusts no operator key.",
       "default": ""
+    },
+    "build-cpu-share": {
+      "type": "number",
+      "description": "The most of this node's processors its builds may take together, in percent (1 to 100): the node-engine holds every build module's runtime of the node in one slice at idle priority under this quota, and each build step sizes its threads from it (novox/hq ADR 0553). Set per node through the node's settings layer; the composer reads it for the build seats' runtimes, the engine's own code does not.",
+      "minimum": 1,
+      "maximum": 100,
+      "default": 50,
+      "runtime": true
     }
   },
   "resources": [