plan: record the seek follow-up

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

plan/summary.md

@@ -1479,3 +1479,36 @@ mixed image+audio, untyped, generic-with-extension, generic-without and video),
 and the two live feeds — netzpolitik.org/feed/ now yields 0 episodes with the
 warning, logbuch-netzpolitik.de/feed/mp3 (→ feeds.metaebene.me/lnp/mp3) yields
 559 `audio/mpeg` episodes with `HH:MM:SS` durations.
+
+### Follow-up: the keys settled on `,` `.` `<` `>`, and the gauge is clickable
+
+Three rounds on the bindings, and the last one had a reason beyond taste.
+`Ctrl-b`/`Ctrl-f` work fine in a browser — the keydown handler already
+`prevent_default`s any chord it resolves — but `Ctrl-n`, the long-standing
+next-track chord, does **not**: Chrome and Firefox handle it as "new window"
+above the page, where `preventDefault` cannot reach. The web client therefore
+had no working next-track key at all.
+
+Plain printable characters dodge the whole reserved-chord question, so seek and
+track-skip now share two keys in both clients: `,`/`.` seek 15 s, `<`/`>` skip a
+track. Same key, shift = bigger jump — self-teaching, and `<`/`>` are the marks
+engraved on those keys (mpv uses them for the same thing). `Ctrl-n`/`Ctrl-p`
+stay bound as the terminal's primary chords; the web help documents the pair
+that always works.
+
+**Click-to-seek shipped without absolute seek**, which had been the deferred
+item. The click maps the pointer's x within the gauge to a fraction of the
+duration and sends `target - position`. Relative is right here even though the
+gesture is absolute: the position it subtracts is the one drawn on the bar the
+user just aimed at, at most one 250 ms tick old — far under one pixel of the
+bar. That staleness is only fatal for a *repeated* key, which is why keys still
+send a fixed step and let the server accumulate. The arithmetic is a pure
+function in `state.rs`, tested on the native target: clicks behind the playhead
+seek back, the edges are exactly the track's ends, a fraction outside `[0, 1]`
+is clamped rather than extrapolated, and a duration of 0 declines.
+
+Also: enabling the web-sys `DomRect` feature, without which
+`Element::get_bounding_client_rect` does not exist. Only the wasm build catches
+that — `cbd-web`'s `mod app` is `#[cfg(target_arch = "wasm32")]`, so native
+clippy never compiles it. Second time this session that the wasm build was the
+only gate that would have caught a web-client mistake.