docs(media): campaign artifacts live in /mnt/entropy/.media-campaign

The array root carried 48 planning artifacts (journals, plans, run logs)
accumulated by the relayout campaigns since 2026-11-02. They sit beside the
libraries now, which is how a media server ends up indexing a journal.

Moved all 48 (219.8 MiB) into the dot-directory `/mnt/entropy/.media-campaign`
with a journaled `media-apply` run (plan, apply, verify — 48 verified at their
targets, 0 root files left). Jellyfin and Plex ignore dot-directories, and the
overlay view exposes the array root to both servers, so the same pollution
existed on the view side.

Every vault page that named a root-level journal path is rewritten to the new
home (26 occurrences across 6 pages), and the law is stated once, in
[[Media Relayout]], which owns the tool chain: `media-apply.py` defaults its
journal to `media-relayout.jsonl` beside `--root`, so a run that omits
`--journal` recreates exactly the root-level log this now forbids.

serverAppConfigs-docs/Dankserver/Media Duplicate Prune.md

@@ -65,8 +65,8 @@ executor's own format; it never moves anything itself.
 python3 scripts/media-tvdupes.py --library /mnt/entropy/TVShows \
     --hold /mnt/entropy/.AGENTTRASH/<date>-tv-duplicates \
     --meta /var/lib/media-meta/view/TVShows --witness witness.tsv \
-    --ids /mnt/entropy/tv-tvdb-ids.tsv \
-    --out /mnt/entropy/tv-dupes-plan.tsv --json /tmp/tv-groups.json
+    --ids /mnt/entropy/.media-campaign/tv-tvdb-ids.tsv \
+    --out /mnt/entropy/.media-campaign/tv-dupes-plan.tsv --json /tmp/tv-groups.json
 # then media-apply.py apply / verify / sweep / rollback, exactly as for a film prune
 ```
 
@@ -76,7 +76,7 @@ python3 scripts/media-tvdupes.py --library /mnt/entropy/TVShows \
   match, not a lookup: `BaseItems` (`Type like '%TV.Series'`) joined to
   `BaseItemProviders` where `ProviderId = 'Tvdb'`, the `/data/TVShows/` prefix
   stripped to the bare top-level folder name — 616 folders, none carrying two
-  ids, written to `/mnt/entropy/tv-tvdb-ids.tsv`. Two folders with disjoint ids
+  ids, written to `/mnt/entropy/.media-campaign/tv-tvdb-ids.tsv`. Two folders with disjoint ids
   are two shows however alike they read — *Avatar: The Last Airbender* (1999)
   beside the 2024 remake, *Millennium* (1996) beside a German thriller Jellyfin
   had also titled *Millennium* — and a pair whose identity cannot be proven is
@@ -158,12 +158,12 @@ Nothing is deleted. Every doomed copy moves into a dated hold with the same
 executor the relayout uses, so any file comes back:
 
 ```bash
-scripts/media-apply.py apply   --plan /mnt/entropy/dup-prune-similar-plan.tsv \
-    --root /mnt/entropy --journal /mnt/entropy/dup-prune-similar.jsonl          # dry
+scripts/media-apply.py apply   --plan /mnt/entropy/.media-campaign/dup-prune-similar-plan.tsv \
+    --root /mnt/entropy --journal /mnt/entropy/.media-campaign/dup-prune-similar.jsonl          # dry
 scripts/media-apply.py apply   --plan … --root /mnt/entropy --journal … --apply
-scripts/media-apply.py verify  --plan … --journal /mnt/entropy/dup-prune-similar.jsonl
-scripts/media-apply.py sweep   --journal /mnt/entropy/dup-prune-similar.jsonl --root /mnt/entropy --apply
-scripts/media-apply.py rollback --journal /mnt/entropy/dup-prune-similar.jsonl --root /mnt/entropy --apply
+scripts/media-apply.py verify  --plan … --journal /mnt/entropy/.media-campaign/dup-prune-similar.jsonl
+scripts/media-apply.py sweep   --journal /mnt/entropy/.media-campaign/dup-prune-similar.jsonl --root /mnt/entropy --apply
+scripts/media-apply.py rollback --journal /mnt/entropy/.media-campaign/dup-prune-similar.jsonl --root /mnt/entropy --apply
 ```
 
 The plan rows are the tool's own format (`action src dst kind`, `mkdir` rows for