diff --git a/docs/release-testing-0.7.md b/docs/release-testing-0.7.md
index 25da5a2..9d664f6 100644
--- a/docs/release-testing-0.7.md
+++ b/docs/release-testing-0.7.md
@@ -108,7 +108,7 @@ inputs and outputs is absent from the ZIP.
 | --- | --- | --- | --- | --- |
 | STQ-01 | New users receive independent stores and standard folders | [PASS](test-evidence/0.7-r1.md#stq-01) |  |  |
 | STQ-02 | Local message survives Queue-to-Store delivery byte-for-byte | [PASS](test-evidence/0.7-r1.md#stq-02) |  |  |
-| STQ-03 | Queue free-space calculation is correct on 32/64-bit and reserves space |  |  |  |
+| STQ-03 | Queue free-space calculation is correct on 32/64-bit and reserves space | [PASS](test-evidence/0.7-r1.md#stq-03) |  |  |
 | STQ-04 | Full-disk and unreadable-spool failures defer safely without mail loss |  |  |  |
 | STQ-05 | Retry, expiry, bounce, listing, hold/release, and deletion |  |  |  |
 | STQ-06 | Concurrent delivery/read/move/delete/restart preserves integrity |  |  |  |
diff --git a/docs/test-evidence/0.7-r1.md b/docs/test-evidence/0.7-r1.md
index fbc1b59..eac18f0 100644
--- a/docs/test-evidence/0.7-r1.md
+++ b/docs/test-evidence/0.7-r1.md
@@ -1446,3 +1446,35 @@ configuration and aliases readable to the test runner had aggregate
 fingerprint
 `2bd12226858159f3d6565c2368210b6e57a916257e0943317efa3f34bedfe5cc`.
 No external mail, SMTP relay, collector source, or LMTP endpoint was used.
+
+## STQ-03
+
+Result: **PASS**
+
+Commit `78c25930` centralised the Queue free-space calculation in
+`BongoQueueAvailableBytes()` and made both the monitor and `QDSPC` require
+free space to be strictly greater than the configured reserve. The test
+suite covers values above 32 bits, the exact-reserve boundary, values below
+the reserve, and arithmetic at `UINT64_MAX`. The 32-bit helper was also
+compiled and run with `-m32`. The complete rebuilt suite passed 85 of 85
+tests in 10.49 seconds.
+
+The commit was pushed to `master`, installed as
+`mail-mta/bongo-9999::bongo` with GCC 15.3.0, and exercised against the live
+Queue on 2026-07-23:
+
+```sh
+./contrib/testing/queue-disk-space-check.sh
+```
+
+```text
+STQ-03 PASS free-before=65388068864 free-after=65388068864 reserve=5242880 reported=65382825984 block=4096
+```
+
+The reported value is exactly 5 MiB below the bracketed filesystem
+free-space measurements and therefore within the permitted one-block
+tolerance. This also proves that the live protocol and administration
+client preserve the value above `UINT32_MAX`. Bongo remained active/running
+as manager PID 1206471 with systemd result `success`. No Queue entry, Store
+object, external mail, SMTP relay, collector source, or LMTP endpoint was
+created or used by this test.