The one-way lane flip: an override into no-room now carries its undo

Eric tapped "flat" on Flick 'em Up in a packed cube. The flip means
"stand this instead" — but the cube's standing lane is 1.55 inches and
the box is 2.8 thick, so the override landed it laneless. And laneless
meant no lane button: the override that caused the problem had no
control left to revoke it. A one-way door, sprung mid-curation.

Now an override that leaves its box without a lane renders as
"no room ✱ undo" — one tap clears the override and the packer chooses
again. The plain "no room" chip (no override, nothing to undo) stays a
chip. Verified live on the real B1: flip-trapped box showed the undo,
one tap returned it to the flat pile, override cleared from
locations.json.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g

.playwright-mcp/page-2026-08-09T19-58-12-420Z.yml

@@ -0,0 +1,65 @@
+- generic [active] [ref=e1]:
+  - link "Skip to content" [ref=e2] [cursor=pointer]:
+    - /url: "#main"
+  - generic [ref=e3]:
+    - link "bggpipe shelf → BGG pipeline" [ref=e4] [cursor=pointer]:
+      - /url: /
+      - generic [ref=e5]:
+        - text: bggpipe
+        - generic [ref=e6]: shelf → BGG pipeline
+    - navigation "Primary" [ref=e7]:
+      - link "Pipeline" [ref=e8] [cursor=pointer]:
+        - /url: /
+      - link "Photos 4" [ref=e9] [cursor=pointer]:
+        - /url: /photos
+        - text: Photos
+        - generic [ref=e10]: "4"
+      - link "Titles" [ref=e11] [cursor=pointer]:
+        - /url: /titles
+      - link "Review" [ref=e12] [cursor=pointer]:
+        - /url: /review
+      - link "Queue" [ref=e13] [cursor=pointer]:
+        - /url: /queue
+      - link "Library" [ref=e14] [cursor=pointer]:
+        - /url: /library
+      - link "Shelves" [ref=e15] [cursor=pointer]:
+        - /url: /shelves
+      - link "Help" [ref=e16] [cursor=pointer]:
+        - /url: /help
+    - figure "art by Juniper" [ref=e17]:
+      - img "the bggpipe piper — a bagpiper whose bag is a board game box" [ref=e18]
+      - generic [ref=e20]: BoardGameGeek and BGG are trademarks of BoardGameGeek, LLC. bggpipe is an independent project, not affiliated with or endorsed by BoardGameGeek.
+  - generic [ref=e21]:
+    - status
+    - main [ref=e22]:
+      - heading "Shelves" [level=1] [ref=e23]
+      - heading "Add a unit" [level=2] [ref=e24]
+      - generic [ref=e25]:
+        - generic [ref=e26]:
+          - text: Unit name
+          - textbox "Unit name" [ref=e27]:
+            - /placeholder: Living room Kallax
+        - generic [ref=e28]:
+          - text: Preset
+          - combobox "Preset" [ref=e29]:
+            - option "IKEA Kallax cube (13.25 × 13.25 × 15.4)" [selected]
+            - option "IKEA Billy shelf (30.75 × 13 × 11)"
+            - option "custom size"
+            - option "no size — travel case, lent out…"
+        - generic [ref=e30]:
+          - text: Rows
+          - textbox "Rows" [ref=e31]: "1"
+        - generic [ref=e32]:
+          - text: Columns
+          - textbox "Columns" [ref=e33]: "1"
+        - generic [ref=e34]:
+          - text: Zone
+          - textbox "Zone" [ref=e35]:
+            - /placeholder: party games
+        - generic [ref=e36]:
+          - text: Description
+          - textbox "Description" [ref=e37]:
+            - /placeholder: the wall behind the couch — main game storage
+        - button "create" [ref=e39] [cursor=pointer]
+        - generic [ref=e40]: grid mode labels openings A1, A2… by row; you can edit, add, or remove openings afterward — repeat with another grid to stack sections (double-wides above cubes, say) in the same unit
+      - paragraph [ref=e42]: Loading…

data/locations.json

@@ -109,7 +109,6 @@
     "opening_id": "library-kallax-c4"
   },
   "166109:253058": {
-    "acknowledged": true,
     "note": "",
     "opening_id": "library-kallax-b1"
   },

data/shelf_plan.csv

@@ -134,3 +134,4 @@ Alice is Missing,library-right-shelving-2-d1,
 Alice is Missing: Silent Falls,library-right-shelving-2-d1,
 Parsely,library-right-shelving-2-d1,
 Dark Cults,library-right-shelving-2-d1,
+Frosthaven,library-right-shelving-2-e1,yes

src/bggpipe/templates/pages/shelves.html

@@ -238,8 +238,12 @@ function sheetRender() {
           ? `<span class="chip open" title="accepted overhang — sits standing,
 proud of the shelf edge">▮ standing, proud</span>` : ""}
         ${g.laneless && !g.acknowledged && !g.ackable
-          ? `<span class="chip open" title="no lane can take this box here —
+          ? (g.lane_override
-the opening is past its packing budget; acknowledging wouldn't help">no room</span>` : ""}
+            ? `<button class="lanebtn" data-key="${esc(g.key)}" data-next=""
+                 title="your ${esc(g.lane_override)} override left this box without
+a lane — tap to undo and let the packer choose again">no room ✱ undo</button>`
+            : `<span class="chip open" title="no lane can take this box here —
+the opening is past its packing budget; acknowledging wouldn't help">no room</span>`) : ""}
         ${g.lane && !g.inherited && !g.acknowledged
           ? `<button class="lanebtn" data-key="${esc(g.key)}"
                data-next="${g.lane === "flat" ? "standing" : "flat"}"