v1.49.0: content-fit zoom, swipe animation, wording, and the v1.47.0 review

Owner's batch:
- zoom now opens on what is DRAWN (rooms + 5% margin) for spaces with no
  background image; with one the image is the plan and still fits whole. A small
  plan on the square canvas no longer opens as a speck.
- swiping between spaces, and the kiosk carousel, slide sideways; honours
  prefers-reduced-motion.
- the room settings button reads 'Room settings' and lightens on hover.
- 'curation' is filtering everywhere: UI strings, docs, code.

Checked the yard while I was there: its drawing sits off-centre because it was
drawn that way — before the migration x spanned 0.12..0.54 with 0.12 and 0.46 of
margin. The migration added 0.1465 on each side, symmetrically. Content-fit zoom
makes it moot anyway.

From the v1.47.0 review:
- HP-1470-02: the picker let you delete the plan you had just selected — it is
  not in the stored config yet, so the server rightly called it free, and the
  save then stored a url with no file. The button is disabled, and since two
  clients can do this in either order, config/set now verifies every internal
  plan url against the disk under the write lock and answers .
  External and legacy urls are not ours to police.
- HP-1470-01: growth is bounded at the door rather than by deleting old files —
  that mistake cost real plans twice. check_quota refuses an upload that would
  push the store past 256 MB / 200 plans (1 GB / 1000 attachments) or leave less
  than 512 MB free. The plan list is capped at 60 newest with a total, and
  thumbnails load lazily.
- HP-1470-03: picking a saved plan waited for nothing and stored a fallback
  ratio when the signature had not arrived — a square plan came out stretched.
  It waits for the signature, binds the result to the dialog that asked, and the
  dialog preview is signed too.
- report §5: the last lifecycle comments still described age-based collection.

Not released yet — the owner asked for a release once the batch is done.

docs/TESTING.md

@@ -66,7 +66,7 @@
       than a quarter of the plan outside the viewBox [auto: smoke_decor]
 
 - [ ] Room climate counts hidden sensors (v1.44.5): a thermometer that is NOT
-      placed on the plan (hidden by curation or by the user) still feeds the
+      placed on the plan (hidden by filtering or by the user) still feeds the
       room card, the tooltip and the temperature fill; fridges/TRVs still do
       not; an explicit per-room source still wins [auto: unit devices.test]
 - [ ] Room tooltip wording (v1.44.5): hovering a room shows its name (plus
@@ -195,7 +195,7 @@ Run the *core flows* (marked ★ below) in each environment at least once per mi
 ## Devices on the plan ★
 
 - [ ] Auto devices appear only in rooms bound to their area [manual]
-- [ ] Curation hides bridges/groups/scenes/excluded integrations; 👁 "show all" reveals [manual]
+- [ ] Filtering hides bridges/groups/scenes/excluded integrations; 👁 "show all" reveals [manual]
 - [ ] Duplicate "name|area" numbered ("Lamp", "Lamp 2") [manual]
 - [ ] Light groups fold their single lamps; `group_lights=false` unfolds [manual]
 - [ ] Drag anywhere (no edit mode), snaps to grid, persists after reload, per space
@@ -239,6 +239,20 @@ Run the *core flows* (marked ★ below) in each environment at least once per mi
       on the plan after a reload. Same for each tap action and each fill mode
       [auto: backend test_every_display_mode_the_editor_offers_is_accepted and
       neighbours, test_a_marker_showing_its_value_can_be_saved]
+- [ ] Zoom opens on the content (v1.49.0): a space with no background and one
+      small room opens with that room filling the screen, with a small margin.
+      With a background it still fits the whole image
+      [auto: unit: contentBounds]
+- [ ] Deleting a picked plan is refused (v1.49.0, HP-1470-02): pick a saved
+      plan, reopen the list — its delete button is disabled. Ask the server to
+      store a plan url whose file is gone: `missing_plan`, and the revision does
+      not move [auto: smoke_saved_plans + backend
+      test_config_set_refuses_a_plan_that_no_longer_exists]
+- [ ] Uploads are bounded (v1.49.0, HP-1470-01): past the store quota an upload
+      is refused with a clear error and the disk does not grow; the plan list
+      returns the newest 60 with a total
+      [auto: unit: test_check_quota_counts_the_whole_store_not_one_request,
+      backend test_uploads_are_bounded_by_a_store_quota]
 - [ ] Square canvas migration (v1.48.0): after the upgrade every existing plan
       looks exactly as before, just with margins where the canvas was extended.
       Measure a wall in the plan editor — the length in cm is unchanged. Marker