docs(media): the Monk duplicate is verified; compare libraries with the series engine

The destination-hold refusal's evidence, stated exactly: 124 episodes both
sides, same episode list, every byte count identical, 31.5 GiB each way,
head+tail blake2b identical on a 6-episode sample.

Plus the law this came out of: a path-substring filter for a series name also
returns other shows (monk matches Monkey Dust), and whichever file a walk
reaches first standing in for an episode turns two libraries into a fake
duplicate — the same sloppiness aimed the other way deletes a unique file.
ep_of on both sides, and a hash before anything is trashed.

serverAppConfigs-docs/Dankserver/Media Relayout.md

@@ -133,10 +133,11 @@ from the box-set folder. What it refuses it prints and leaves alone:
 - a destination two files both claim: the executor refuses the whole plan
   before its first rename, and only Frank decides which copy is the keeper.
 - an episode the destination library already holds at the same byte count. The
-  movie share carried a second copy of all 124 Monk episodes — the TV library
-  has had the same box set for years, every episode the same size, ~31 GiB of
-  it. The mover leaves such a series in place and says so; a duplicate is
-  deleted or kept by Frank, never copied into one library by a tool.
+  movie share carried a second copy of the whole Monk box set — 124 episodes
+  both sides, the same episode list, every byte count identical, 31.5 GiB each
+  way, and head+tail blake2b identical on a 6-episode sample. The mover leaves
+  such a series in place and says so; a duplicate is deleted or kept by Frank,
+  never copied into one library by a tool.
 
 A sidecar that shares an episode's own name (`.srt`, `.nfo`) moves with it.
 
@@ -166,6 +167,13 @@ A sidecar that shares an episode's own name (`.srt`, `.nfo`) moves with it.
   folder holding it, and extras drifted into a neighbour. A bare number counts
   only when it could be a release year, so `1080` and `2160` never pose as
   agreement between two names.
+- **Compare two media libraries with the series engine, never a path
+  substring.** Filtering paths for `monk` also returns *Monkey Dust*, and
+  letting whichever file a walk happens to reach first stand for an episode
+  paired two libraries into a fake duplicate — the same sloppiness pointed the
+  other way deletes a file that is unique. The comparison is `media-titles.ep_of`
+  on both sides: series, season, episode, bytes, and a hash before anything is
+  trashed.
 - **A file whose name carries no words is bonus material, not a folder.**
   `.Extra 1 ( 1H 27min multisub ).mkv` parses to `1`; a movie folder named `1`
   is not a movie. It becomes a review line telling a human to name the file.