diff --git a/.gitattributes b/.gitattributes
index 42f0985b..6c77f343 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -75,3 +75,5 @@ harness/experiments/source-alias-rename-native-20260912/** -text whitespace=cr-a
 harness/experiments/source-alias-rename-completed-20260912/** -text whitespace=cr-at-eol
 harness/experiments/source-alias-rename-refresh-20260912/** -text whitespace=cr-at-eol
 harness/experiments/source-alias-rename-native-closure-20260912/** -text whitespace=cr-at-eol
+harness/experiments/source-alias-rename-scroll-20260912/** -text whitespace=cr-at-eol
+harness/experiments/source-alias-rename-server-20260912/** -text whitespace=cr-at-eol
diff --git a/harness/experiments/source-alias-rename-scroll-20260912/README.md b/harness/experiments/source-alias-rename-scroll-20260912/README.md
new file mode 100644
index 00000000..dd71f928
--- /dev/null
+++ b/harness/experiments/source-alias-rename-scroll-20260912/README.md
@@ -0,0 +1,13 @@
+# Desktop preview-scroll evidence
+
+Commit: `cbc49a7802fb1bba0dd284fd904c700a0703ae70`. Raw committed inputs: 517 files.
+
+Desktop gates: clippy, tests, timing and GUI build passed. Tests: 805 passed, 0 failed, 3 ignored.
+
+Both original focused attempts are preserved, including the first failure in the pre-existing geometry collector, which still targeted the obsolete scroll ID. The second attempt passes after its target lookup was migrated; full gate evidence follows.
+
+Every original file is bound by size and SHA-256 in archive-manifest.json. Identical inputs.zip archives may share one archivedAs entry; their original logical paths and hashes remain listed. Raw source is kept in the original nested input ZIPs, not duplicated as expanded files. Executables are excluded; their exact hashes remain in receipts and the commit binding.
+
+For portable verification, extract tools/archive/bundle.py and run `python bundle.py verify <evidence.zip>` (Python 3.11+). It verifies every stored original and each nested source ZIP without Git, source checkout, build or execution. Use archivedAs to retrieve a logical path when an identical source archive was deduplicated.
+
+Portable desktop scroll correction evidence only. Preserves the first focused failure, its test-only geometry-id repair and subsequent passing gates. No new native acceptance, server completion, publication or server artifact binding is claimed. Commit/raw-source verification is the recorded parent-run binding; this archive helper runs no Git or applications.
diff --git a/harness/experiments/source-alias-rename-scroll-20260912/evidence.zip b/harness/experiments/source-alias-rename-scroll-20260912/evidence.zip
new file mode 100644
index 00000000..6a249e40
Binary files /dev/null and b/harness/experiments/source-alias-rename-scroll-20260912/evidence.zip differ
diff --git a/harness/experiments/source-alias-rename-scroll-20260912/verification.json b/harness/experiments/source-alias-rename-scroll-20260912/verification.json
new file mode 100644
index 00000000..717d02b4
--- /dev/null
+++ b/harness/experiments/source-alias-rename-scroll-20260912/verification.json
@@ -0,0 +1,63 @@
+{
+  "atUtc": "2026-09-12T22:56:36.734482+00:00",
+  "archive": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\source-rename-scroll-evidence-20260912\\desktop-scroll-closure-1\\evidence.zip",
+  "archiveSha256": "4832e072da5db50dd2816d0246ba904dddb400b6eea5c16e18a1998c2fcfca57",
+  "manifestSha256": "32f16279a29234c294be53a7f5a28d075b699973dfd0b5e554c664fee697b96c",
+  "logicalFileCount": 40,
+  "storedFileCount": 41,
+  "allOriginalHashesVerified": true,
+  "nestedInputArchivesVerified": true,
+  "summary": {
+    "commit": "cbc49a7802fb1bba0dd284fd904c700a0703ae70",
+    "sourceFileCount": 517,
+    "commitBindingSha256": "a03517b2396884a90d0609336b6c7bf3338c0ad44c50df9fc47b82bc1e674efd",
+    "desktopGates": {
+      "clippy": 0,
+      "tests": 0,
+      "timing": 0,
+      "gui": 0
+    },
+    "desktopTests": {
+      "status": "ok",
+      "passed": 805,
+      "failed": 0,
+      "ignored": 3
+    },
+    "focusedAttempts": {
+      "preview-scroll-tests-1": {
+        "exitCode": 101,
+        "status": "FAILED",
+        "passed": 21,
+        "failed": 1,
+        "ignored": 0
+      },
+      "preview-scroll-tests-2": {
+        "exitCode": 0,
+        "status": "ok",
+        "passed": 22,
+        "failed": 0,
+        "ignored": 0
+      }
+    },
+    "guiArtifact": {
+      "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\source-rename-integration-20260912\\attempt-8\\arcadia-studio.exe",
+      "profile": {
+        "opt_level": "0",
+        "debuginfo": 0,
+        "debug_assertions": true,
+        "overflow_checks": true,
+        "test": false
+      },
+      "bytes": 113883648,
+      "sha256": "819965abf5e70cc72f4fbd8acced15de6a54a2103b025366e2c7d5c8ef6d69d1"
+    },
+    "excluded": [
+      "executables",
+      "compiler caches",
+      "profiles",
+      "expanded duplicate raw source",
+      "live server attempt-1"
+    ],
+    "boundary": "Portable desktop scroll correction evidence only. Preserves the first focused failure, its test-only geometry-id repair and subsequent passing gates. No new native acceptance, server completion, publication or server artifact binding is claimed. Commit/raw-source verification is the recorded parent-run binding; this archive helper runs no Git or applications."
+  }
+}
diff --git a/harness/experiments/source-alias-rename-server-20260912/README.md b/harness/experiments/source-alias-rename-server-20260912/README.md
new file mode 100644
index 00000000..cab7fa7c
--- /dev/null
+++ b/harness/experiments/source-alias-rename-server-20260912/README.md
@@ -0,0 +1,9 @@
+# Completed server gate evidence
+
+Source commit `cbc49a7802fb1bba0dd284fd904c700a0703ae70`, 517 exact captured source files. Three original gate receipts/logs, one original nested input ZIP, environment, completion and parent raw commit binding are retained. Counts are derived from actual capture.
+
+The executable, caches, profiles and expanded raw source are excluded. The executable was read/hash-verified at creation and remains externally bound; portable verification does not require or launch it. Runtime helpers/config/result belong to a separate later archive once actual HTTP evaluation closes.
+
+Extract tools/archive/bundle.py and run `python -B bundle.py verify <evidence.zip>` to check complete membership, all bytes/CRCs, nested source ZIP and recorded receipt bindings.
+
+Completed core/server gates and recorded raw source/commit binding only. Executable omitted but hash-bound. No packaged-server HTTP, GUI/native acceptance or publication claimed. This helper runs no Git, compiler, oracle or application.
diff --git a/harness/experiments/source-alias-rename-server-20260912/evidence.zip b/harness/experiments/source-alias-rename-server-20260912/evidence.zip
new file mode 100644
index 00000000..9e475ac5
Binary files /dev/null and b/harness/experiments/source-alias-rename-server-20260912/evidence.zip differ
diff --git a/harness/experiments/source-alias-rename-server-20260912/verification.json b/harness/experiments/source-alias-rename-server-20260912/verification.json
new file mode 100644
index 00000000..5875b160
--- /dev/null
+++ b/harness/experiments/source-alias-rename-server-20260912/verification.json
@@ -0,0 +1,295 @@
+{
+  "archiveSha256": "2ff758c1a6fe9ef29dc1c9aede058749fdafb4b9a40a949f09d3022c18e51230",
+  "archiveBytes": 2224422,
+  "manifestSha256": "30783d251613730bffe9633e41a4c89882e37d164e9b5a9da8328ab498b29b71",
+  "storedFileCount": 20,
+  "nestedSourceZipVerified": true,
+  "allStoredBytesAndCrcVerified": true,
+  "summary": {
+    "commit": "cbc49a7802fb1bba0dd284fd904c700a0703ae70",
+    "sourceFileCount": 517,
+    "serverArtifact": {
+      "path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\source-rename-server-build-20260912\\attempt-1\\arcadia-server.exe",
+      "originalPath": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\target-gnullvm\\debug\\arcadia-server.exe",
+      "profile": {
+        "opt_level": "0",
+        "debuginfo": 0,
+        "debug_assertions": true,
+        "overflow_checks": true,
+        "test": false
+      },
+      "compilerArtifact": {
+        "reason": "compiler-artifact",
+        "package_id": "path+file:///C:/Users/User/Documents/Git/ARCADIA-Studio/crates/oa-server#0.2.0",
+        "manifest_path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\crates\\oa-server\\Cargo.toml",
+        "target": {
+          "kind": [
+            "bin"
+          ],
+          "crate_types": [
+            "bin"
+          ],
+          "name": "arcadia-server",
+          "src_path": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\crates\\oa-server\\src\\main.rs",
+          "edition": "2024",
+          "doc": true,
+          "doctest": false,
+          "test": true
+        },
+        "profile": {
+          "opt_level": "0",
+          "debuginfo": 0,
+          "debug_assertions": true,
+          "overflow_checks": true,
+          "test": false
+        },
+        "features": [],
+        "filenames": [
+          "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\target-gnullvm\\debug\\arcadia-server.exe"
+        ],
+        "executable": "C:\\Users\\User\\Documents\\Git\\ARCADIA-Studio\\.local\\target-gnullvm\\debug\\arcadia-server.exe",
+        "fresh": false
+      },
+      "bytes": 39653376,
+      "sha256": "b92a4d7f8b5bf868fef8cfe154cea1d7d8ab50367da8458ab9cb593b074aefcf"
+    },
+    "testSummaries": [
+      {
+        "passed": 54,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 3,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 9,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 6,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 16,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 13,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 8,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 3,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 7,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 1,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 8,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 5,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 35,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 7,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 15,
+        "failed": 0,
+        "ignored": 1
+      },
+      {
+        "passed": 7,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 5,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 4,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 7,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 4,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 4,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 13,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 13,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 14,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 11,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 6,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 15,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 5,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 18,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 2,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 2,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 4,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 8,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 16,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 8,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 3,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 12,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 33,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 13,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 28,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 4,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 0,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 50,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 2,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 0,
+        "failed": 0,
+        "ignored": 0
+      },
+      {
+        "passed": 0,
+        "failed": 0,
+        "ignored": 0
+      }
+    ],
+    "boundary": "Completed core/server gates and recorded raw source/commit binding only. Executable omitted but hash-bound. No packaged-server HTTP, GUI/native acceptance or publication claimed. This helper runs no Git, compiler, oracle or application."
+  },
+  "originalReadback": true,
+  "excludedExecutableReadback": {
+    "bytes": 39653376,
+    "sha256": "b92a4d7f8b5bf868fef8cfe154cea1d7d8ab50367da8458ab9cb593b074aefcf"
+  }
+}
diff --git a/harness/release-source-alias-rename-validation-20260912.md b/harness/release-source-alias-rename-validation-20260912.md
index edd6a677..8847d9f8 100644
--- a/harness/release-source-alias-rename-validation-20260912.md
+++ b/harness/release-source-alias-rename-validation-20260912.md
@@ -391,3 +391,45 @@ size 6,449,971 bytes. Screenshot 023's unrelated occluding window image is
 excluded; its hash and exclusion reason are retained. This remains a prerelease
 preparation checkpoint, not full OA/SA acceptance. Linux verification remains
 paused by the user.
+
+## Corrected preview scroll and current server at cbc49a7
+
+Source `cbc49a7802fb1bba0dd284fd904c700a0703ae70` resets preview scroll on
+explicit file, hunk, row, segment or filter changes and on a fresh accepted
+Preview. Each destination visit has a new identity, so delayed operations cannot
+reset a later visit. Unchanged input, clamped navigation and passive rebuilds
+retain the current scroll. Three retained-widget tests cover this lifecycle.
+The initial focused run preserved 21 passes and one failure in an older geometry
+collector that still queried the retired fixed identifier. Updating that lookup
+without weakening its geometry assertions produced 22 passes.
+
+Desktop attempt 8 passed strict all-target Clippy, **805 tests** (zero failed,
+three ignored), the required isolated Confirm experiment and the GUI build.
+The GUI is 113,883,648 bytes, SHA-256
+`819965abf5e70cc72f4fbd8acced15de6a54a2103b025366e2c7d5c8ef6d69d1`.
+All 517 captured raw source files and membership match the committed blobs;
+the gate, log and artifact binding receipt has SHA-256
+`a03517b2396884a90d0609336b6c7bf3338c0ad44c50df9fc47b82bc1e674efd`.
+The [desktop evidence archive](experiments/source-alias-rename-scroll-20260912/evidence.zip)
+preserves both focused attempts and the completed gates; its
+[portable verification](experiments/source-alias-rename-scroll-20260912/verification.json)
+checks stored bytes, CRCs and nested source snapshots. Archive SHA-256:
+`4832e072da5db50dd2816d0246ba904dddb400b6eea5c16e18a1998c2fcfca57`.
+
+The same source passed strict core/server Clippy, **501 tests** (zero failed,
+one optional inheritance-scaling probe ignored) and the server build. The server
+is 39,653,376 bytes, SHA-256
+`b92a4d7f8b5bf868fef8cfe154cea1d7d8ab50367da8458ab9cb593b074aefcf`.
+Its separate raw-commit binding verifies the same 517 source files and all three
+gate/log/artifact records; receipt SHA-256
+`09f183f057b3a7e8e1025fb07092c5327861afc358a61657f84301878adc41f4`.
+The [server evidence archive](experiments/source-alias-rename-server-20260912/evidence.zip)
+and [portable verification](experiments/source-alias-rename-server-20260912/verification.json)
+retain that evidence without executables or cache copies. Archive SHA-256:
+`2ff758c1a6fe9ef29dc1c9aede058749fdafb4b9a40a949f09d3022c18e51230`.
+
+Both binaries use Rust 1.98.1 on Windows GNU LLVM, with optimization and debuginfo
+disabled and debug assertions enabled. These source and archive checks do not
+establish later packaged runtime/native acceptance, reproducible compiler output,
+optimized performance or complete OA/SA release acceptance. Live package and
+publication progress remains in issue 9.