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.

install.sh

@@ -25,19 +25,19 @@ fail() {
 }
 
 # --- prerequisites -----------------------------------------------------------
-command -v git >/dev/null 2>&1 \
-    || fail "git is required. Install it first."
-command -v node >/dev/null 2>&1 \
-    || fail "Node.js 18+ is required (e.g. 'sudo pacman -S nodejs npm' or 'sudo apt install nodejs npm')."
-command -v npm >/dev/null 2>&1 \
-    || fail "npm is required (usually installed together with Node.js)."
+command -v git >/dev/null 2>&1 ||
+    fail "git is required. Install it first."
+command -v node >/dev/null 2>&1 ||
+    fail "Node.js 18+ is required (e.g. 'sudo pacman -S nodejs npm' or 'sudo apt install nodejs npm')."
+command -v npm >/dev/null 2>&1 ||
+    fail "npm is required (usually installed together with Node.js)."
 
 if ! command -v uv >/dev/null 2>&1; then
     echo "uv not found — installing it from https://astral.sh/uv ..."
     curl -LsSf https://astral.sh/uv/install.sh | sh
     export PATH="$HOME/.local/bin:$PATH"
-    command -v uv >/dev/null 2>&1 \
-        || fail "uv installation failed. Install uv manually: https://docs.astral.sh/uv/"
+    command -v uv >/dev/null 2>&1 ||
+        fail "uv installation failed. Install uv manually: https://docs.astral.sh/uv/"
 fi
 
 # --- locate the source tree ---------------------------------------------------
@@ -59,4 +59,4 @@ uv tool install --force "$src"
 echo
 echo "NVCurve installed."
 echo "  Verify your GPU:  nvcurve setup"
-echo "  Start the web UI: nvcurve"
+echo "  Start the web UI: nvcurve"