Restructure repo (#251)

* refactor: restructure src/ into modules/, scripts/, and build/

- src/nag_screen/ and src/node_info/ -> src/modules/  (mods grouped explicitly)
- src/Scripts/ -> src/scripts/                        (lowercase, consistent)
- src/gen-rules.sh -> build/                          (build tool separated from source)

Update all references: debian/rules, .github/workflows/*, build/gen-rules.sh,
src/scripts/test/test-syntax.sh (SRC_DIR now points to src/modules/),
src/scripts/test/test-patches.sh, and files.list comments.

* refactor: move CI test scripts from src/scripts/test/ to build/test/

Test scripts are not installed — they are CI/dev tooling and belong
alongside build/gen-rules.sh. Update workflow references and fix the
SRC_DIR path depth in build/test/test-syntax.sh (../ -> ../..).

* d

---------

Co-authored-by: Meliox <na>

src/modules/node_info/patches/01-nodes-pm-sensors.patch

@@ -0,0 +1,16 @@
+--- a/usr/share/perl5/PVE/API2/Nodes.pm
++++ b/usr/share/perl5/PVE/API2/Nodes.pm
+@@ -536,6 +536,13 @@
+ 
+         $res->{pveversion} = PVE::pvecfg::package() . "/" . PVE::pvecfg::version_text();
+ 
++        # Collect sensor data from PveMod_SensorInfo
++        use PVE::API2::PVEMod_SensorInfo;
++        $res->{PveMod_JsonSensorInfo} = PVE::API2::PVEMod_SensorInfo::get_sensors_info();
++        $res->{PveMod_Version} = PVE::API2::PVEMod_SensorInfo::get_pve_mod_version();
++        $res->{PveMod_upsInfo} = PVE::API2::PVEMod_SensorInfo::get_ups_info();
++        $res->{PveMod_graphicsInfo} = PVE::API2::PVEMod_SensorInfo::get_graphics_info();
++        $res->{PveMod_systemInfo} = PVE::API2::PVEMod_SensorInfo::get_system_information();
+         my $dinfo = df('/', 1); # output is bytes
+ 
+         $res->{rootfs} = {

src/modules/node_info/patches/02-nodes-pm-GPU-RRD-history.patch

@@ -0,0 +1,67 @@
+--- usr/share/perl5/PVE/API2/Nodes.pm	2026-05-24 02:05:58.000000000 +0200
++++ /usr/share/perl5/PVE/API2/Nodes.pm	2026-06-13 16:29:47.810720485 +0200
+@@ -251,6 +251,7 @@
+             { name => 'report' },
+             { name => 'rrd' }, # fixme: remove?
+             { name => 'rrddata' },
++            { name => 'gpurrddata' },
+             { name => 'scan' },
+             { name => 'sdn' },
+             { name => 'services' },
+@@ -879,6 +880,56 @@
+         );
+     },
+ });
++
++__PACKAGE__->register_method({
++    name => 'gpurrddata',
++    path => 'gpurrddata',
++    method => 'GET',
++    protected => 1,
++    proxyto => 'node',
++    permissions => {
++        check => ['perm', '/nodes/{node}', ['Sys.Audit']],
++    },
++    description => "Read GPU RRD statistics",
++    parameters => {
++        additionalProperties => 0,
++        properties => {
++            node => get_standard_option('pve-node'),
++            card => {
++                description => "The GPU card identifier (e.g. card0, nvidia0).",
++                type => 'string',
++                pattern => '[a-zA-Z0-9]+',
++            },
++            timeframe => {
++                description => "Specify the time frame you are interested in.",
++                type => 'string',
++                enum => ['hour', 'day', 'week', 'month', 'year', 'decade'],
++            },
++            cf => {
++                description => "The RRD consolidation function",
++                type => 'string',
++                enum => ['AVERAGE', 'MAX'],
++                optional => 1,
++            },
++        },
++    },
++    returns => {
++        type => "array",
++        items => {
++            type => "object",
++            properties => {},
++        },
++    },
++    code => sub {
++        my ($param) = @_;
++        my $nodename = PVE::INotify::nodename();
++        my $card = $param->{card};
++        die "invalid card name\n" unless $card =~ /^[a-zA-Z0-9]+$/;
++        return PVE::RRD::create_rrd_data(
++            "pve-mod-gpu/$nodename/$card", $param->{timeframe}, $param->{cf},
++        );
++    },
++});
+ 
+ __PACKAGE__->register_method({
+     name => 'syslog',

src/modules/node_info/patches/patches.list

@@ -0,0 +1,9 @@
+# pve-mod :: node_info patch manifest
+# Format: <patch-file> [section.key=value]
+# Patches are applied top-to-bottom. An optional condition (read from this mod's
+# conf.d file, /etc/pve-mod/conf.d/node_info.conf) gates a patch; it is applied
+# only when the key equals the given value.
+
+01-nodes-pm-sensors.patch
+02-nodes-pm-GPU-RRD-history.patch    gpu.gpu_history=1
+03-pvemanager-js-sensors.patch

src/modules/node_info/patches/post-apply.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+# post-apply hook for the node_info mod.
+# Runs after node_info patches are applied. Provided env: MOD_CONF, STASH_DIR,
+# CONFD_DIR. Creates the GPU RRD storage directory when GPU history is enabled.
+# Exit codes: 0 = no change, 100 = changed (restart pveproxy), other = error.
+
+set -u
+
+GPU_RRD_DIR="/var/lib/rrdcached/db/pve-mod-gpu"
+
+read_conf() {
+    local file="$1" section="$2" key="$3" default="${4:-0}"
+    [[ -f "$file" ]] || { echo "$default"; return; }
+    local val
+    val=$(awk -F= -v sec="[$section]" -v k="$key" '
+        /^\[/ { in_sec = ($0 == sec) }
+        in_sec && /^[^#=]+=/ {
+            gsub(/^[[:space:]]+|[[:space:]]+$/, "", $1)
+            if ($1 == k) { gsub(/^[[:space:]]+|[[:space:]]+$/, "", $2); print $2; exit }
+        }
+    ' "$file")
+    echo "${val:-$default}"
+}
+
+gpu_history="$(read_conf "${MOD_CONF:-/etc/pve-mod/conf.d/node_info.conf}" gpu gpu_history 0)"
+
+if [[ "$gpu_history" == "1" && ! -d "$GPU_RRD_DIR" ]]; then
+    mkdir -p "$GPU_RRD_DIR"
+    chown www-data:www-data "$GPU_RRD_DIR" 2>/dev/null || true
+    echo "[pve-mod] Created GPU RRD directory: $GPU_RRD_DIR"
+    exit 100
+fi
+
+exit 0