feat: experimental NVIDIA power control via RM ioctl interface

Adds an experimental power-cap mode using the undocumented RM ioctl
interface (based on panchovix's LACT PR #1205) to set power limits
below the VBIOS minimum (down to 30 W).

- hal/rm_power.py: RM ioctl power-cap read/write/reset + runtime probe
- limits.py: power_cap_mode (nvml/ioctl) with support detection
- config.py: persist power_cap_mode per GPU
- profiles: record/apply power_cap_mode
- server.py: POST /api/limits validates ioctl support (409 on failure)
- cli.py: profile save falls back to persisted mode
- client.py: power_cap_mode in Limits
- frontend: toggle + warning with panchovix attribution (LACT #1205)
- tests: test_rm_power.py (unit) + integration coverage
- Makefile: add test_rm_power.py to make test

Also includes automated linter reformatting (prettier, ruff, shellcheck,
isort, markdownlint) that the linter would apply anyway.

hatch_build.py

@@ -20,7 +20,13 @@ import sys
 from hatchling.builders.hooks.plugin.interface import BuildHookInterface
 
 # Frontend inputs that must be newer than dist/index.html to trigger a rebuild.
-_FRONTEND_INPUTS = ("src", "index.html", "vite.config.ts", "package.json", "tsconfig.json")
+_FRONTEND_INPUTS = (
+    "src",
+    "index.html",
+    "vite.config.ts",
+    "package.json",
+    "tsconfig.json",
+)
 
 
 class FrontendBuildHook(BuildHookInterface):