Owner's reorganisation: frame into 2009-fpga, media regrouped, old math versions removed

- original-frame/ moves into 2009-fpga/original-frame/ (the FPGA version introduced the frame).
- Media regrouped by the owner: the two 2011-07-01 PNGs and MOV02256-02259 to FireFly, SNC00198.jpg to the FPGA version.
- Removed from the current version (still in the history): docs/math wisFORlive.docx, wisFORlive3.docx, wisFORlive4.docx and 'z axis rotation.url'.
- READMEs, 2026-current/CLAUDE.md and the root timeline updated to match.

2009-fpga/original-frame/README.md

@@ -0,0 +1,12 @@
+# Original frame (2009–2023)
+
+The mechanical design every version up to 2023 was built on. The 2026 robot has a new design, see
+`../../2026-current/hardware/fusion360/`.
+
+| File | Date | What |
+|---|---|---|
+| `poot.dxf` | 2009-10 | leg ("poot") |
+| `hexapod been.dxf` | 2009-12 | leg ("been") |
+| `poot2.dwg` | 2011-04 | leg, second version |
+| `body.dxf`, `Body.jpg` | 2011-07 | body plate, for the Arduino Mega + SSC-32 rebuild |
+| `bracket.dxf` | 2011-07 | servo bracket |