Coalesce source-entry updates without changing the 500 ms transition or
field geometry. Resolve shared barrier revisions once within a synchronous
render and always recheck content on the next pass. Release main/static
LED owners on no-strip exits and static owner/config teardown.
Protect scheduling, real browser fades, cold imports and the bundled
render-pass wiring. Performance acceptance remains a separate exact-SHA
full Linux run; this commit alone does not assert that AC3 has passed.
Issue: #789
User-Visible: yes
Matysh
7777b8a0a8