diff --git a/quest/m1/README.md b/quest/m1/README.md
index 64c978f6c8..99867fbf26 100644
--- a/quest/m1/README.md
+++ b/quest/m1/README.md
@@ -46,7 +46,6 @@ transport, benchmark tooling); worktrees isolate commits, not semantics.
 - [JavaScript FETCH](/quest/m1/js-fetch.md) - generic on-demand group serving and IETF FETCH for browser publishers
 - [Archive](/quest/m1/archive/README.md) - record selected tracks to any object_store and replay them over FETCH or derived HLS, on the catalog and store the release ships
 - [Wildcard](/quest/m1/wildcard/README.md) - a relay resolves subscriptions against advertised prefixes, a service claims the prefix it could serve and refuses the rest instead of enumerating broadcasts, and the browser player treats a covering claim as availability
-- [js/publish discontinuity](/quest/m1/js-publish-discontinuity.md) - the JS container producer and js/publish emit the same marker group on encoder restart
 - [Impaired path](/quest/m1/transport-impairment-profile.md) - the transport drills run over a seeded, impaired UDP path on any host
 - [Tooling](/quest/m1/tooling/README.md) - justfiles become a one-line menu over `sh/`, one impact map scopes CI, and every workflow step runs a recipe
 - [Generation](/quest/m1/hls-generation.md) - init URLs follow the rendition config and segment URLs carry an embedder-supplied generation, so caching can be re-enabled
diff --git a/quest/m1/js-publish-discontinuity.md b/quest/m1/js-publish-discontinuity.md
deleted file mode 100644
index d492209041..0000000000
--- a/quest/m1/js-publish-discontinuity.md
+++ /dev/null
@@ -1,16 +0,0 @@
-# [S] js/publish declares a discontinuity with a marker group
-
-## Goal
-
-A browser publisher declares a discontinuity the same way Rust does: the
-js/hang container producer publishes a marker group of one empty frame and
-resumes in the next group, and js/publish calls that on encoder restart.
-
-## Plan
-
-js/hang has no container producer `discontinuity()` today (only comments in
-`js/publish/src/audio/encoder.ts:154`). Add one that matches the hang marker
-contract: cut the open group, write a single empty frame at the exclusive end
-of the previous epoch, finish that group, and let the next keyframe open the
-resume group. Wire encoder restart in js/publish to it. Data tracks skip a
-sequence with no marker.
diff --git a/quest/m1/publisher-clock.md b/quest/m1/publisher-clock.md
index 75c533560e..23f437f7c9 100644
--- a/quest/m1/publisher-clock.md
+++ b/quest/m1/publisher-clock.md
@@ -16,8 +16,11 @@ old archive records. Preserve allowed B-frame ordering within a group.
 
 Keep source-specific timestamp conversion at the adapter boundary. Refuse an
 unmappable source explicitly. Discontinuity markers signal the existing
-playhead contract; they do not replace the wall epoch. Coordinate browser
-encoder restart markers with the discontinuity prerequisite.
+playhead contract; they do not replace the wall epoch. In `js/publish`, the
+video encoder marks a break through `Container.Legacy.Producer.cut()` whenever
+its encode loop stops (demand gap or capture swap). The audio encoder writes its
+own marker on a demand gap only: an audio pipeline rebuild and the framer's
+input-gap reset still write none.
 
 Add CI fixtures for simultaneous A/V, late first frames, restart to zero,
 restart after idle, system-wall adjustment, and retained archive playback.
@@ -25,10 +28,6 @@ The fixtures must exercise publisher integration rather than only the clock
 helper. Update publisher and import docs; this quest adds no new clock API or
 catalog representation. GStreamer's clock observation remains its own quest.
 
-## Required
-
-- [Publisher discontinuity](/quest/m1/js-publish-discontinuity.md) - use the settled browser restart-marker path
-
 ## Related
 
 - [GStreamer clock](/quest/m1/3021-moq-gst-anchor-generated-media-timelines-to-wall-clock.md) - separate source adapter