docs: build p31, image 20260903003213, the campaign's image

BRINGUP item 9: items 10 and 11 are on image 20260903003213; owed is the
flash, the fresh-boot baseline, and the full campaign, then the push and
the pin bumps. CAMPAIGN-LOG: the p31 build and its checks.

docs/BRINGUP.md

@@ -1372,13 +1372,13 @@ feature requests, enhancements) will eventually be tracked as GitHub issues.
     pins, the kernel and the module rebuilt together for the watchdog sysfs
     change, and is not the image the campaign runs on: the campaign waits
     until every audit finding, the deferred ones included, is on one image
-    (the operator's rule). That batch is done (item 11) and is on the local
-    image 20260903000529 (release and dev; the module built from its local
-    commit at 0.0.3, the kernel from the edited patches, everything else
-    from the pushed pins), which is the campaign's image. Owed now: flash
-    the dev image, take a fresh-boot baseline, run the full campaign on it,
-    the campaign the release gate asks for; then the push in CI order and
-    the pin bumps for the batch.
+    (the operator's rule). That batch is done (items 10 and 11) and is on
+    the local image 20260903003213 (release and dev; the module built from
+    its local commit at 0.0.3, the kernel from the edited patches,
+    everything else from the pushed pins), which is the campaign's image.
+    Owed now: flash the dev image, take a fresh-boot baseline, run the full
+    campaign on it, the campaign the release gate asks for; then the push
+    in CI order and the pin bumps for the batch.
     Decisions taken in the remediation that the operator confirms or reverses:
     the release image has no shell login (the install page now says so); the
     cloud client holds and resumes on the cooling verdict with a 30-minute

docs/CAMPAIGN-LOG.md

@@ -7445,6 +7445,25 @@ second read agrees with the first, mean within 2 counts, interquartile
 within 3), and the coolant-reading tests. The diagnostic's spaced reads and
 interquartile means stay: they take the steady bias out of its edges.
 
+## 2026-09-02: build p31, the campaign's image with item 10
+
+Build p31 replaces p30 as the campaign's image: the same batch plus the
+PIC transaction pacing, the module from its local commit at 0.0.3 (pinned
+for this build only, its mirror primed), the kernel from the edited
+patches, everything else from the pushed pins. Fetch-verify green; the
+kernel and the module cleaned together; both images built clean, release
+and dev `20260903003213`. The checks: the kernel and the module both name
+`6.12.20-fslc-fslc-g08aa91b3b59f`; the dev manifest records the module at
+its commit and 0.0.3 and every other component at its pushed pin; the
+module in the dev image carries the inhibit, the mailbox and the
+`pic_gap_us` strings, with a vermagic that matches the kernel; the patched
+tree carries the dmaengine claim and the word_delay source; the suite in
+the image carries the two new drills; `WATCHDOG_SYSFS`, `IMX2_WDT` and
+`STRICT_DEVMEM` are set; no gfui-client; `nofail` factory slots; no mmap or
+ctypes in the release image; no QA warnings. Owed: the operator flashes the
+dev image, takes a fresh-boot baseline, and runs the full campaign; then
+the push in CI order and the pin bumps.
+
 ## Reference notes
 
 ### Head-IRQ source validation — the beam-emission hypothesis