Unified logging: rsyslog as the system logger, the ForgeFIRM log tree

rsyslog replaces busybox syslogd/klogd (VIRTUAL-RUNTIME_base-utils-syslog,
trimmed PACKAGECONFIG) and becomes the only log writer: the appended
/etc/rsyslog.conf sets the inputs and the ff_line format and includes
the per-logger rules that `forgectrl --render-syslog` renders from the
machine settings at boot. forgefirm-logrotate becomes forgefirm-logging:
render before rsyslog starts (S19), sweep the pre-syslog log files into
/data/forgefirm/legacy-logs once, and rotate the tree at boot and hourly
by rename + HUP instead of copytruncate. Pins bumped to the pushed
forgectrl (syslog emitter, Logs tab, export), grblHAL-glowforge (syslog
emitter) and python3-gfhardware apps (syslog handlers, capture dir);
the CI harnesses set FFLOG_STDERR=1 so failure diagnostics keep the
controller's log lines. BRINGUP carries the bench validation checklist
(Next work item 14); this is an image change and rides the next flash.

meta-forgefirm/recipes-forgefirm/forgefirm-logging/forgefirm-logging.bb

@@ -0,0 +1,30 @@
+SUMMARY = "ForgeFIRM logging tree: rsyslog rules at boot, rotation"
+DESCRIPTION = "Boot-time glue for the ForgeFIRM logging tree \
+(/data/log/forgefirm/<logger>/): renders the per-logger rsyslog rules \
+from the machine settings before rsyslog starts (forgectrl \
+--render-syslog), moves pre-syslog log files out of the way once, and \
+drives size-capped logrotate at boot and hourly (a full /data breaks \
+settings, update staging, and the controllers' own writes)."
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
+
+SRC_URI = " \
+    file://forgefirm.logrotate \
+    file://forgefirm-logging.init \
+"
+
+S = "${WORKDIR}"
+
+inherit update-rc.d
+
+INITSCRIPT_NAME = "forgefirm-logging"
+# 19: before rsyslog's own script (syslog, S20) so the rendered rules
+# exist when it reads its config.
+INITSCRIPT_PARAMS = "start 19 2 3 4 5 ."
+
+RDEPENDS:${PN} = "logrotate rsyslog forgectrl"
+
+do_install() {
+    install -Dm 0644 ${WORKDIR}/forgefirm.logrotate ${D}${sysconfdir}/logrotate.d/forgefirm
+    install -Dm 0755 ${WORKDIR}/forgefirm-logging.init ${D}${sysconfdir}/init.d/forgefirm-logging
+}