diff --git a/README.md b/README.md
index 4f94303..f114319 100644
--- a/README.md
+++ b/README.md
@@ -373,30 +373,3 @@ X2_dashboard/
 └── systemd_user/                 unit files
 ```
 
----
-
-## Design notes
-
-**No framework, no CDN, no build step.** The frontend is plain ES modules and hand-written DOM. The robot has no internet access, and the dashboard is often loaded over the robot's own Wi-Fi — the same link it uses to walk. A framework would cost more than it saves at this size.
-
-That constraint also explains two hand-rolled renderers:
-
-- **`charts.js`** — SVG charts. 2 px lines with round joins, area washes at 10 % opacity, ≥8 px end markers with a 2 px surface ring, hairline gridlines, endpoint-only direct labels, a legend from two series up, and a crosshair tooltip on hover. Text always wears text tokens, never the series colour.
-- **`model3d.js`** — one shader, flat shading, a rigid-body tree of 41 links. Geometry arrives as **uint16 positions quantised inside each mesh's bounding box** and the shader expands them back to metres, so the 4× saving over float32 costs two extra instructions per vertex. Normals are computed per-face in the fragment shader from screen-space derivatives, so the vertex buffer carries positions and nothing else.
-
-**Nothing assumes a fixed IP.** Every URL in the frontend is derived from `window.location`, so opening the page from a laptop, a phone, a tablet or a hostname all work with no configuration. The server binds `0.0.0.0` and enumerates its own addresses.
-
-**The Fast DDS profile is not optional.** A camera frame is 170–430 KB and a LiDAR scan is 816 KB. Fast DDS defaults to a 512 KB shared-memory segment and small socket buffers, and it **drops samples that large in complete silence** — discovery succeeds, the reader matches the writer, `ros2 topic info` reports a publisher, and not one message is ever delivered. The vendor profile raises the segment to 32 MB and UDP buffers to 10 MB. An earlier revision of `x2_spec.py` concluded this unit had one camera and no chest LiDAR; it has six camera feeds and a LiDAR, and the agent simply could not receive them.
-
-**mDNS is implemented on the stdlib, not `zeroconf`.** The advertised name is additive and reversible — the host keeps its own identity, and the extra name exists only while the dashboard is running, so it needs neither administrator rights nor a reboot.
-
----
-
-## What is not in this copy
-
-Two things were deliberately excluded when this snapshot was taken from the robot:
-
-- **The Sanad API service** (`sanad_api_x2`) — it carries live credentials in a `.env`, so it is not published here.
-- **Teach mode / Manual Recorder** — the record-an-arm-motion-by-hand feature and its `/api/recorder/*` routes were removed from this copy. The dashboard runs without it; the feature still exists on the robot.
-
-No API keys or credentials are present in this repository. The Gemini and LinkSoul credentials the voice session depends on are read at runtime from `~/.sanad_agibot_env` on the robot and are never embedded in this code.