diff --git a/harness/STATE.md b/harness/STATE.md
index 570df3f4..4f535d6b 100644
--- a/harness/STATE.md
+++ b/harness/STATE.md
@@ -24,6 +24,11 @@ pass 125 tests; the earlier full-suite result retains its separate source scope.
 actual extracted desktop/server behavior, Save/Undo/Redo/reopen and complete
 source/model oracles. This is a scoped development preview, not complete release
 or acceptance of the separately owned follow-up union.
+The [scoped compact Help Windows preview](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.compact-help.20261001)
+is published from evidence checkpoint `f1fdca371394aec1148e67f33f4d8c6b53a0c350`.
+Its ZIP, checksum and validation attachment were downloaded and matched after
+publication; [publication receipts](experiments/compact-help-20261001/publication.md)
+retain the exact asset hashes and provenance.
 
 Dense diagrams, remaining Scenario group adapters, quantities/calculations/
 constraints, maintained libraries, broad accessibility/DPI and full OA/SA
diff --git a/harness/experiments/compact-help-20261001/publication.md b/harness/experiments/compact-help-20261001/publication.md
new file mode 100644
index 00000000..c6e69799
--- /dev/null
+++ b/harness/experiments/compact-help-20261001/publication.md
@@ -0,0 +1,23 @@
+# Confirmed scoped compact Help publication
+
+[Release 8](http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.compact-help.20261001)
+is published as an unfinished Windows development prerelease from evidence
+checkpoint `f1fdca371394aec1148e67f33f4d8c6b53a0c350`. The existing integrated
+release 7 and its branch/tag/assets remain unchanged.
+
+[Authoritative validation](../../release-compact-help-validation-20261001.md)
+identifies desktop source `6e7c4ddaf0775198384a8c4882809ea8e14b2976`, reused server
+source `715036e132677dd2bc2fb37ed316d93dc9987aec`, and package documentation
+`ea23e229260d7d050b3c3b88e77c3a851e936abe`. Publishing the evidence tag does not
+claim binaries rebuilt from its documentation commit.
+
+[Upload readback](upload-readback.json), [publication readback](publish-readback.json)
+and a separate [published-release readback](verify-readback.json) verify all three
+assets against their exact local bytes. The final release query confirms draft
+false and prerelease true, exact tag/source/body and asset set. The Studio ZIP
+is 34,184,534 bytes with SHA256
+`18af75c7aea60bb0d5db5b1925d0d0815ecd08afc5bb258438851cfda809a6f2`.
+
+This is delivery of the bounded #39 contribution, not full OA/SA acceptance or
+the separately owned follow-up integration. The review PR remains a comparison
+against the frozen foundation; it must be retargeted before any merge.
diff --git a/harness/experiments/compact-help-20261001/publish-readback.json b/harness/experiments/compact-help-20261001/publish-readback.json
new file mode 100644
index 00000000..5ad24ab1
--- /dev/null
+++ b/harness/experiments/compact-help-20261001/publish-readback.json
@@ -0,0 +1,28 @@
+{
+  "mode": "publish",
+  "release_id": 8,
+  "tag": "v0.2.0-preview.compact-help.20261001",
+  "source": "f1fdca371394aec1148e67f33f4d8c6b53a0c350",
+  "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.compact-help.20261001",
+  "draft": false,
+  "assets": {
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip": {
+      "bytes": 34184534,
+      "sha256": "18af75c7aea60bb0d5db5b1925d0d0815ecd08afc5bb258438851cfda809a6f2",
+      "asset_id": 33,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip"
+    },
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip.sha256": {
+      "bytes": 146,
+      "sha256": "fc0cedd3ff6410b416d25096fdb49cc3b8d43a474d2acd72f1587f7ac01e9548",
+      "asset_id": 34,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip.sha256"
+    },
+    "VALIDATION.md": {
+      "bytes": 2739,
+      "sha256": "35c59dd3cdcedd1269601c31f7c5755db73a5c0fc38987cb09406ae3daaf29ca",
+      "asset_id": 35,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/VALIDATION.md"
+    }
+  }
+}
\ No newline at end of file
diff --git a/harness/experiments/compact-help-20261001/upload-readback.json b/harness/experiments/compact-help-20261001/upload-readback.json
new file mode 100644
index 00000000..51396a55
--- /dev/null
+++ b/harness/experiments/compact-help-20261001/upload-readback.json
@@ -0,0 +1,28 @@
+{
+  "mode": "upload",
+  "release_id": 8,
+  "tag": "v0.2.0-preview.compact-help.20261001",
+  "source": "f1fdca371394aec1148e67f33f4d8c6b53a0c350",
+  "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.compact-help.20261001",
+  "draft": true,
+  "assets": {
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip": {
+      "bytes": 34184534,
+      "sha256": "18af75c7aea60bb0d5db5b1925d0d0815ecd08afc5bb258438851cfda809a6f2",
+      "asset_id": 33,
+      "url": "http://217.177.34.108:3000/attachments/cfabace0-90ae-4e20-afe7-54079f01b03c"
+    },
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip.sha256": {
+      "bytes": 146,
+      "sha256": "fc0cedd3ff6410b416d25096fdb49cc3b8d43a474d2acd72f1587f7ac01e9548",
+      "asset_id": 34,
+      "url": "http://217.177.34.108:3000/attachments/c1a9f5ea-fe63-4edb-8873-d4c055d4ed25"
+    },
+    "VALIDATION.md": {
+      "bytes": 2739,
+      "sha256": "35c59dd3cdcedd1269601c31f7c5755db73a5c0fc38987cb09406ae3daaf29ca",
+      "asset_id": 35,
+      "url": "http://217.177.34.108:3000/attachments/2125424f-be2c-4fd6-af0c-ca695900153d"
+    }
+  }
+}
\ No newline at end of file
diff --git a/harness/experiments/compact-help-20261001/verify-readback.json b/harness/experiments/compact-help-20261001/verify-readback.json
new file mode 100644
index 00000000..cdcf41f2
--- /dev/null
+++ b/harness/experiments/compact-help-20261001/verify-readback.json
@@ -0,0 +1,28 @@
+{
+  "mode": "verify",
+  "release_id": 8,
+  "tag": "v0.2.0-preview.compact-help.20261001",
+  "source": "f1fdca371394aec1148e67f33f4d8c6b53a0c350",
+  "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/tag/v0.2.0-preview.compact-help.20261001",
+  "draft": false,
+  "assets": {
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip": {
+      "bytes": 34184534,
+      "sha256": "18af75c7aea60bb0d5db5b1925d0d0815ecd08afc5bb258438851cfda809a6f2",
+      "asset_id": 33,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip"
+    },
+    "ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip.sha256": {
+      "bytes": 146,
+      "sha256": "fc0cedd3ff6410b416d25096fdb49cc3b8d43a474d2acd72f1587f7ac01e9548",
+      "asset_id": 34,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/ArcadiaStudio-0.2.0-preview.compact-help.20261001-x86_64-pc-windows-gnullvm.zip.sha256"
+    },
+    "VALIDATION.md": {
+      "bytes": 2739,
+      "sha256": "35c59dd3cdcedd1269601c31f7c5755db73a5c0fc38987cb09406ae3daaf29ca",
+      "asset_id": 35,
+      "url": "http://217.177.34.108:3000/sorokin.oleg.edu/ARCADIA-Studio/releases/download/v0.2.0-preview.compact-help.20261001/VALIDATION.md"
+    }
+  }
+}
\ No newline at end of file