docs(agents): use reyna-cli for Tactility board discovery & management

Prefer reyna-cli (registry-addressed by device ID) over raw IPs/curl for the
Tactility LAN fleet. Document board ID->IP map (kidosos_* boards, esp32_screen,
little32), discover/devices/sysinfo/apps/install/run/report commands, and the
USB serial monitor for capturing ELF missing-symbol logs.

AGENTS.md

@@ -69,6 +69,7 @@ xtensa-esp32s3-elf-nm -D Apps/MyApp/build/cmake-build-esp32s3/MyApp.app.elf | gr
 python .claude/skills/tactility-app-development/scripts/verify_symbols.py Apps/MyApp
 
 # Install to device (dashboard API port 80, not dev port 6666)
+# Preferred: use reyna-cli (see "Device discovery & management via reyna-cli" below)
 $IDF_PYTHON_ENV_PATH/bin/python tactility.py Apps/MyApp install 192.168.68.112 esp32s3
 # or dashboard directly:
 curl -X PUT http://192.168.68.112/api/apps/install -F "file=@build/MyApp.app"
@@ -83,6 +84,41 @@ curl http://192.168.68.112/api/apps   # list installed
 # If 6666 refused → use dashboard PUT above
 ```
 
+### Device discovery & management via reyna-cli
+
+`reyna-cli` (at `/Users/adolforeyna/.local/bin/reyna-cli`) wraps the Tactility LAN web API with a device registry
+(`~/.hermes/local_devices.yaml`). Prefer it over raw IPs/curl for fleet discovery and management. Boards are
+addressed by their stable registry **ID** (not IP — DHCP IPs change); `devices list` maps IDs→IPs.
+
+Registered Tactility boards (from `reyna-cli devices list`):
+
+| ID | IP | Board |
+|----|----|-------|
+| `kidosos_a790` | `.129` | Personal 3.5-inch Tactility Board (Dev) — USB `/dev/cu.usbmodem*` for serial |
+| `kidosos_5c5c` | `.114` | Grace's 2.8-inch board |
+| `kidosos_5690` | `.107` | Elias's 2.8-inch board |
+| `kidosos_591c` | `.128` | Kitchen 2.8-inch board |
+| `esp32_screen` | `.123` | ESP32 Screen |
+| `little32` | `.122` | Little32 Kitchen ESP32 Screen |
+
+Commands:
+
+```bash
+reyna-cli tactility discover                       # probe all boards; online/offline + sysinfo
+reyna-cli devices list                             # registry (id, ip, display name, status)
+reyna-cli tactility sysinfo kidsos_a790            # firmware/version/heap/psram/SD
+reyna-cli tactility apps kidsos_a790               # installed apps
+reyna-cli tactility install kidsos_5c5c build/MyApp.app   # PUT install by device id
+reyna-cli tactility run kidsos_5c5c one.tactility.myapp   # launch app
+reyna-cli tactility report kidsos_a790             # apps + SD + bible/podcast usage
+# most commands accept --json for machine-readable output
+```
+
+Use a serial monitor on the USB board for loader/ELF diagnostics: `/dev/cu.usbmodem*` @ 115200
+(e.g. `idf5.5_py3.9_env/bin/python -m serial.tools.miniterm /dev/cu.usbmodem31201 115200`). This is how you
+capture `E ELF: Can't find symbol X` on `.129` — `verify_symbols.py` only compares against local firmware
+SOURCE and can pass even when the flashed firmware's export table differs.
+
 ### manifest.properties
 
 ```properties