diff --git a/docs/agents.md b/docs/agents.md
index 4a56bb45..396d8aaf 100644
--- a/docs/agents.md
+++ b/docs/agents.md
@@ -133,6 +133,12 @@ build real projects through these interfaces; they are worked examples of everyt
   (a string param that is exactly `"$N"` or `"$N.key"` is replaced; `$2.path` is the trim's path).
 * **Expressions**: `set_property`/`get_property` replies carry `evaluated` (what renders) next to
   `value` (the keyframed value) and `expressionError` when the expression fails.
+* **Keyframes like a person**: `keys.select {keys, toggle: true}` (Shift+click), `keys.selectEqual`
+  / `selectPrevious` / `selectFollowing`, `keys.move {delta, merge}` (steps sharing a merge key are
+  one drag: each applies to the keys as they were before it, so a key passed over survives) and
+  `keys.transform {…, merge, fromStart: true}` (values are the whole transform since the drag
+  started). Keys of locked layers can't be selected. Copy / paste: `keys.copy`, then `keys.paste`
+  at the current time (keys copied from several layers go to as many selected layers in order).
 * **Easing with Keyframe Velocity**: select keys by path, `keys.select {"keys":[{"layer":"Ring","path":"contents/trim/end","time":0}]}`,
   then `keys.velocity {"outSpeed":0,"outInfluence":33.33}`.
 * **Gradients**: `set_property {"path":"contents/gfill/colors","value":["#0080ff","#ffff00"]}` or
diff --git a/docs/parity.md b/docs/parity.md
index e0199a7b..3c1d5294 100644
--- a/docs/parity.md
+++ b/docs/parity.md
@@ -392,6 +392,32 @@ Browser in the web app (landed in M13.10: browser storage and File System Access
   wrong signatures and versions, fuel exhaustion, traps and bit-identical output; script
   `Socket` validates ports, and ScriptUI resource strings accept trailing array commas.
 
+## Update: M5.9–M5.14 keyframes, M3.15 clipboard, M12.8 responsiveness
+
+- **The app froze every 10 s on Windows** (M12.8): the cache budgets' memory reading started
+  PowerShell on the UI thread and waited about a second for it. It runs on a background thread
+  now, every 30 s.
+- **Ctrl+C / Ctrl+X / Ctrl+V** (M3.15) reach Edit ▸ Copy, Cut and Paste in the app (the window
+  layer sends them as clipboard events, which the shortcut dispatcher ignored), and copying puts
+  a line on the system clipboard so Ctrl+V always arrives.
+- **Timeline keyframes** (M5.9–M5.12): a drag follows the pointer to the end (it let go after a
+  frame or two), moves every selected key as one undo step, never deletes keys it passes over,
+  moves keys of time-stretched layers with the pointer, and Shift snaps to the current time,
+  keys, layer ends and markers with a time / offset tooltip; Shift+click toggles selection,
+  Ctrl+click switches Linear ↔ Auto Bezier, Ctrl+Alt+click toggles Hold; keys of locked layers
+  can't be selected; Toggle Hold off restores Bezier; double-click edits a key's value; Select
+  Equal / Previous / Following Keyframes; roving keys draw as dots.
+- **Graph Editor** (M5.11): a drag moves every selected key in time and value from where it was
+  grabbed, Shift keeps one axis; the transform box and Alt-drag scaling never merge keys on the
+  way and move them however slowly they are dragged; the same Shift / Ctrl / Ctrl+Alt clicks.
+- **Paste** (M5.13): keys copied from several layers paste onto as many layers in order; Paste
+  Reversed Keyframes follows Paste's rules (stretch, target property, Hold-only properties).
+- **J / K and Info** (M5.14): J / K also stop at the work area; the Info panel shows a selected
+  key's property, time and value.
+
+Not yet: J / K and Select All Keyframes use every property of the layers, not only the revealed
+ones; Graph Editor keys are drawn as squares whatever their interpolation; Auto-Select Graph Type.
+
 ## Update: M4.9–M4.11 nested comps and motion blur
 
 - **Composition Settings ▸ Advanced ▸ Preserve frame rate when nested or in render queue** and
diff --git a/docs/preferences.md b/docs/preferences.md
index 6e68ba94..60b38084 100644
--- a/docs/preferences.md
+++ b/docs/preferences.md
@@ -124,7 +124,7 @@ Commands (CLI, MCP, control channel):
   sample rate and read back instead of decoding again
 - `memory.ramReservedGb`: the cache budgets together leave this much physical memory free
 - `memory.reduceCacheWhenLow`: cache budgets halve while the system is low on memory (checked
-  every 10 s by the desktop app)
+  every 30 s by the desktop app, on a background thread)
 - `video.enableOutput`, `video.device`, `video.outputDuringPlayback`, `video.mirrorOnMonitor`,
   `video.disableWhenBackground`: Video Preview, a second window (or full screen on the display
   it is on) showing the composition frame, Mercury Transmit-style