fix: make rear strap brackets side-feed

hardware/README.md

@@ -43,7 +43,7 @@ Each camera node is two ESP boards in a small upright stand-mounted case. The ca
 | Short USB cables / wiring | as needed | ~$2–$5 | Power bank → node USB-C input; node 5 V passthrough → USB-A female → GoPro USB cable; internal power/signal wiring |
 | M2 or small self-tapping screws | 4 | <$1 | Front service lid screws; pilot holes are parametric |
 | PETG filament | ~35–50 g | ~$1 | 3D printed case body + lid |
-| Reusable cloth zip ties / Velcro straps | 2 | ~$1 | Primary stand mount through rear vertical zip-tie pass-through loops |
+| Reusable cloth zip ties / Velcro straps | 2 | ~$1 | Primary stand mount through rear vertical zip-tie brackets with lateral side-feed openings |
 
 **Total per node:** roughly ~$25–$35 plus GoPro and power bank, depending on display/switch choice.
 
@@ -62,7 +62,7 @@ The current v4 CAD replaces the rejected wide/low electronics-box layout with a
    - single 3 mm **RGB STAT** LED for state-dependent colors.
    - small rectangular rocker switch cutout.
    - two long rounded lower front slots styled after the reference appliance face.
-4. **Rear vertical zip-tie pass-through loops** — two low-profile external belt-loop brackets, one left and one right of center, with real top-to-bottom tunnels behind the raised bridges for feeding reusable cloth zip ties / Velcro straps.
+4. **Rear vertical zip-tie pass-through brackets** — two low-profile external brackets, one left and one right of center, with top/bottom anchor pads and long vertical side-access openings. Zip ties feed laterally in the X direction behind each raised bridge face instead of top-to-bottom, while the rear wall stays sealed.
 5. **USB power ports** — bottom USB-C female power input and right-side USB-A female passthrough power output for a GoPro USB power cable.
 
 ### Export wrappers
@@ -98,9 +98,9 @@ openscad -D 'part="front_review"' -o hardware/case/camera-node-case-v4-front-rev
 
 - **Material:** PETG preferred for heat/outdoor use and strap-tab durability.
 - **Layer:** 0.2 mm typical.
-- **Infill:** 20% gyroid minimum; 30%+ recommended around rear vertical zip-tie loop side pads/bridges.
-- **Supports:** likely minimal/none depending on orientation; verify the vertical rear pass-through tunnels remain open and check USB-C/USB-A port cutouts in slicer.
-- **Post-processing:** fit 4 lid screws; deburr OLED/LED/switch cutouts; clear any stringing inside the rear pass-through tunnels; soften strap-contact edges if the printed radius is too sharp for cloth ties.
+- **Infill:** 20% gyroid minimum; 30%+ recommended around rear vertical zip-tie bracket anchor pads/bridges.
+- **Supports:** likely minimal/none depending on orientation; verify the rear lateral side-feed openings remain open and check USB-C/USB-A port cutouts in slicer.
+- **Post-processing:** fit 4 lid screws; deburr OLED/LED/switch cutouts; clear any stringing inside the rear side-feed openings; soften strap-contact edges if the printed radius is too sharp for cloth ties.
 
 ## Expected Status Screen Content
 
@@ -163,7 +163,7 @@ The ESP8266/ESP-01S and GoPro talk over Wi-Fi. The only cable to the GoPro is US
 ## Field Setup
 
 1. Mount GoPro on tripod/stand.
-2. Feed two reusable cloth zip ties / Velcro straps through the rear vertical pass-through loops from top to bottom.
+2. Feed two reusable cloth zip ties / Velcro straps laterally through the long side openings behind the rear vertical brackets.
 3. Strap the case to a tripod/stand leg; use both strap paths to resist rotation.
 4. Connect the power bank to the case bottom USB-C input; connect the GoPro USB power cable to the case side USB-A passthrough output.
 5. Toggle rocker switch on.
@@ -177,13 +177,13 @@ Prototype v4 nominal CAD dimensions:
 | Part / feature | W × D × H (mm) |
 |---|---|
 | Case shell external | ~56 × 36 × 82 |
-| Case with rear zip-tie loops | ~56 × 40.5 × 82 |
+| Case with rear zip-tie brackets | ~56 × 41.2 × 82 |
 | Front recessed lid | visible panel ~48 × 2 × 74; total with locating lip ~48 × 3 × 74 |
 | OLED visible window assumption | ~31 × 16 |
 | Rocker cutout assumption | ~13 × 19 |
 | Bottom USB-C power input cutout | ~10.5 × 4.5 opening with ~18 × 10 shallow underside recess |
 | Right-side USB-A passthrough cutout | ~16 Y/front-back × 8 Z opening through side wall |
-| Rear vertical zip-tie loops | two external pass-through brackets, each ~8.5 mm wide × 50 mm tall; usable tunnel ~6.4 mm strap width × ~3.8 mm strap-thickness clearance, open top/bottom for feeding |
+| Rear vertical zip-tie brackets | two external side-feed brackets, each ~8.5 mm wide × 50 mm tall; lateral tunnel has ~40 mm vertical side-window length × ~3.8 mm strap-thickness clearance behind the raised bridge |
 | Board clearance targets | ESP32-C3 22.5 × 18 mm + ESP-01S 24.7 × 14.3 × 12 mm plus wiring/service clearance |
 
 These dimensions are placeholders for the first CAD prototype. Measure the actual OLED module, rocker switch, LEDs, screws, USB-C/USB-A connector flanges and body depths, USB cable bend radius, and strap width/thickness before committing to production prints.