docs(release): retain installed registration and coexistence evidence

Record exact hosted53755ab acceptance and distinguish unsigned fixture proof from remaining production signing and Windows chooser checks.

Co-Authored-By: Codex <noreply@openai.com>
Signed-off-by: James Maes <jmaes@dmdbrands.com>

docs/SESSION-STATE.md

@@ -2,6 +2,31 @@
 
 Updated: 2026-10-11
 
+## Registration and simultaneous editions verified - 2026-10-11
+
+Exact53755ab / CI38182128299 is terminal success: focused21/21, native99/99,
+published99/99, installed stable98/98 and dev98/98, zero failures/skips.
+All reported PR checks pass. Actual AppKit update/apply/restart verifies target
+versions and assembly hashes. Before/after registration JSON confirms all five
+extensions for both editions; actual uninstall removes owned registrations and
+preserves existing defaults.
+
+coexisting-channels.json confirms simultaneous stable/dev windows in separate
+processes/profiles, isolated updates with sibling state preserved, stable uninstall
+preserving the live registered dev edition, and unchanged existing defaults.
+Retain current-installed-53755ab.log and the complete actual TRXs/results under
+artifacts/current-installed-evidence-38182128299. These fixtures are unsigned;
+Windows chooser/Explorer interaction and final production signatures remain open.
+The two published print-startup failures seen onbd3d72a do not reproduce on537;
+do not claim a production startup fix from this clean run alone.
+
+Signed local5803fc1 andaeeb28d include the inline-heading correction and native
+General/Contents settings. Build/format and593 core/100% measured lines pass;
+100 UI cases are compiled/discovered. Their updated/new native assertions need
+fresh hosted execution. The old full job is terminal, so the next authorized
+push may proceed without cancelling it. Full Settings/theme/Printing design and
+genuine review/signing/publication remain required; no local desktop input.
+
 ## Native General and Contents options prepared - 2026-10-11
 
 Move new-window Contents/Source defaults and Default Apps guidance into General;

docs/TODO.md

@@ -1,5 +1,8 @@
 # Development Tasks
 
+- [x] Exact53755ab: published99/99, installed stable/dev98/98 each; actual five-extension registration before/after update and owned uninstall/default preservation pass.
+- [x] Exact53755ab: simultaneous stable/dev profiles/processes, isolated actual updates and stable uninstall preserving dev pass; retain coexisting-channels.json and TRXs.
+
 - [x] Prepare native General Contents wrapping/depth-marker controls with checked sibling-safe persistence;593 core/100% measured lines and zero-warning Release pass.
 - [ ] Execute the actual long-title/sibling/persistence/restoration test and inspect Settings screenshots on its exact pushed head.
 

docs/reference-fidelity-audit.md

@@ -58,3 +58,14 @@ A valid multiline raw heading within a Markdown paragraph exposed a separate
 source-fold defect. Actual inline parser nodes now retain the complete header;
 592 core tests pass with100% measured line coverage. The existing runtime fixture
 now exercises this variant, with fresh hosted execution still required.
+
+## Installed registration and coexistence evidence
+
+Exact53755ab / CI38182128299 passes native/published99/99 and installed
+stable/dev98/98 each, zero failures/skips. Actual registration readbacks verify
+five extensions before/after each real AppKit update and owned removal with
+existing defaults preserved. Separate concurrent stable/dev windows/profiles,
+isolated updates and stable uninstall preserving the live dev edition pass.
+Retain the actual TRXs and coexisting-channels.json under
+artifacts/current-installed-evidence-38182128299. The fixtures are unsigned and
+do not establish OS chooser/Explorer interaction or production signature trust.