Give the 2014, 2016 and 2019 robot sketches their own sketch folder

The Arduino IDE needs the folder name to match the .ino: HexapodRobot/, Hexapod_NEW/ and Hexapod_Teensy/. References in 2026-current/CLAUDE.md updated.

2026-current/CLAUDE.md

@@ -21,11 +21,11 @@ This folder is `2026-current/` inside the `hexapod-robot` repo. The older genera
 (paths below are relative to this folder) and are the owner's reference material:
 
 ```
-../2019-teensy-nrf24/robot/            old robot sketch: servo passthrough only, no IK - see "Old robot sketch" below
+../2019-teensy-nrf24/Hexapod_Teensy/            old robot sketch: servo passthrough only, no IK - see "Old robot sketch" below
 ../2019-teensy-nrf24/remote/           old remote sketch
 ../2019-teensy-nrf24/remote-nextion/   remote.HMI = old Nextion UI, 6 pages
-../2016-ssc32-processing-port/,        older generations with their own IK, driving an external
+../2016-ssc32-processing-port/Hexapod_NEW/,        older generations with their own IK, driving an external
-../2014-ik-core-task-queue/            SSC-32-style servo controller
+../2014-ik-core-task-queue/HexapodRobot/            SSC-32-style servo controller
 ../README.md                           timeline of every generation since 2009
 ```
 
@@ -300,7 +300,7 @@ Robot (`robot/README.md` has detail):
   push opposite to the commanded motion. The harness `z`/`c` keys were
   corrected to `z` = `yaw_rate` + (turn left). `sim_smoke` checks that
   +vx goes forward and +yaw_rate turns left.
-- **Old robot sketch (`../2019-teensy-nrf24/robot/`)**: real hardware facts.
+- **Old robot sketch (`../2019-teensy-nrf24/Hexapod_Teensy/`)**: real hardware facts.
   It received 18 servo angles (0–180) over RF24Network (channel 90) from
   the old remote/Unity and wrote them with PWMServo. No IK, no gait.
   - **Board:** Teensy 3.6 (pins 36–39 and `SPI.setSCK(14)`, confirmed by
@@ -328,7 +328,7 @@ Robot (`robot/README.md` has detail):
     - tibia servo = −tibia (right), 180 + tibia (left), so 90 = knee bent
       90°.
   - All of this is now in `Config.h` `SERVOS` (see "Servos" above).
-- **Older sketches (`../2016-ssc32-processing-port/`, `../2014-ik-core-task-queue/`,
+- **Older sketches (`../2016-ssc32-processing-port/Hexapod_NEW/`, `../2014-ik-core-task-queue/HexapodRobot/`,
   2014–2016 era)**: an earlier electronics generation. They did IK on the board and
   sent `#n Pxxxx … T0` text commands over `Serial1` to an external
   SSC-32-style servo controller (channels 0–9 and 16–24).
@@ -336,7 +336,7 @@ Robot (`robot/README.md` has detail):
     960–2100 µs femur over 0–180°), which corroborates the ≈6.7 µs/° femur
     in `SERVOS`.
   - **Links:** femur 10, tibia 15 (cm), with no coxa length in that IK.
-  - **Hip layout comment in `../2016-ssc32-processing-port/HexapodClass.h`:** width 9.5 cm
+  - **Hip layout comment in `../2016-ssc32-processing-port/Hexapod_NEW/Hexapod_NEW/HexapodClass.h`:** width 9.5 cm
     (front/rear) and 14 cm (middle), 10 cm front-to-middle-to-rear. The
     Unity model has 10 / 13 / 10. Whichever chassis is current, measure
     before trusting `LEG_MOUNT_*`.