docs(skills): rename debug skills, drop the PC-host/TinyUSB-device assumption

Rename usb-target-debug -> target-debug, usb-debug -> usb-kernel-debug,
usb-recover -> usb-kernel-recover (script filenames unchanged), and make all
debug skills/agents decide tool applicability by which end of the link runs
Linux: TinyUSB may run the device or host stack, and its peer may be a Linux
PC, another TinyUSB board, or a Linux gadget (e.g. Raspberry Pi UDC).

- usbmon: exists only when a Linux PC is the link's host
- usb-kernel-debug: either Linux end; allowlist gains dwc3/libcomposite/udc_core
  for the gadget side of a Linux peer
- usb-sniffer: the only full-visibility capture when TinyUSB is the host
- target-debug: covers dcd_* and hcd_*/tuh_ debugging; channel choice by topology
- update target-debugger/hil-operator agents, pre-pr, hil-validate.js, and the
  USB_RECOVER path constant in test/hil/usbtest.py
- CLAUDE.md: fold the dcd/hcd datasheet cross-check rule into the read-doc line

1 files changed, 1 insertions, 1 deletions

diff --git a/CLAUDE.md b/CLAUDE.md
index 2acdc3a63..77dab4565 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -116,7 +116,7 @@ Cutting a release — version bump, regenerated files, the per-release changelog
 
 ## References
 
-- MCU reference manuals, datasheets, schematics: before answering register/bitfield/pinout/errata/timing questions from memory or the web, use the `read-doc` skill (`.claude/skills/read-doc/SKILL.md`) to search and read them from `$HOME/Documents/calibre-library` (skill no-ops if the library is absent).
+- MCU reference manuals, datasheets, schematics: before answering register/bitfield/pinout/errata/timing questions from memory or the web — or changing a specific dcd/hcd driver — use the `read-doc` skill (`.claude/skills/read-doc/SKILL.md`) to cross-check against docs in `$HOME/Documents/calibre-library`; tell the user if the needed document is missing (skill no-ops if the library is absent).
 - Supported MCUs/boards: `hw/bsp/` and `docs/reference/boards.rst`.
 - USB classes: `src/class/{cdc,hid,msc,audio,…}/` — each has `*_device.c` and `*_host.c`.
 - Key files: `src/tusb.h`, `src/tusb_config.h`, `tools/get_deps.py`, `tools/build.py`, `test/unit-test/project.yml`.