🚧 WIP

README.md

@@ -307,13 +307,13 @@ requirement ID for each item in parentheses.
       `--web-port`, env `WAGO_SIM_WEB_USER/PASSWORD/READONLY/
       NO_WEB/WEB_PORT`; login page + SPA shell.
 - [x] M2: node overview page — DIN-rail strip with coupler block
-      (MS/NS/BF/SF LEDs), module bezels with article numbers plus the
-      kind+slot designation (`DI0`, `DO2`, `AI4`) in the header's
-      upper right corner, per-channel LEDs for DI/DO with the channel
-      number beneath, bar+numeric indicators for AI/AO with the channel
-      number outside the overflow/underflow limit LEDs, live values
-      via WebSocket (`/api/ws`, 10 Hz delta push), `GET /api/values`
-      snapshot (FR-10.2.2).
+      (MS/NS/BF/SF LEDs), module bezels with article numbers, the
+      kind+slot designation (`DI0`, `DO2`, `AI4`) in the module's
+      lower left corner below the indicators, per-channel LEDs for
+      DI/DO with the channel number beneath, bar+numeric indicators
+      for AI/AO with the channel number outside the overflow/underflow
+      limit LEDs, live values via WebSocket (`/api/ws`, 10 Hz delta
+      push), `GET /api/values` snapshot (FR-10.2.2).
 - [x] M3: manipulation — DI/DO toggle (field side via
       `set_digital_input_channel`, master side via internal
       `write_bits`/`write_words` dispatch so mirrors/statistics stay
@@ -344,6 +344,11 @@ requirement ID for each item in parentheses.
       module saves, export/import, and rebuilds; also fixes the bar
       never filling (it set width instead of height on a vertical bar)
       and the invisible numeric label (clipped by overflow: hidden).
+      Signed support (2026-10-04): range bounds and simulated values
+      may be negative (-65534–65535; stored as 16-bit two's
+      complement), for signed plant quantities. DI/DO channels render
+      in two rows (0–7 upper, 8–15 lower), mirroring two-deck WAGO
+      modules.
 - [ ] M6: scenario run view + alias-ownership rejection (FR-10.2.6,
       FR-10.2.9) — deferred.
 - [x] Tests: 46 web-UI tests (`tests/test_webui.py`) via httpx