v5.0.1: Windows QtQuick crash fix + node/Tor lifecycle overhaul

Windows crash chain (exposed by the embedded-node default):
- main.cpp: force the QtQuick software renderer. The Mining tab's QQuickWidget
  drove the default RHI/GL path and faulted (0xc0000005) on broken-GL hosts
  (VirtualBox VMSVGA), crashing the app and orphaning the embedded node.
  Real hardware was unaffected.
- ChildProcessGuard + DaemonManager/TorManager: kernel-level die-with-parent
  (Windows Job Object KILL_ON_JOB_CLOSE / Linux PR_SET_PDEATHSIG) so the
  embedded wownerod and bundled tor never survive a wowlet exit or crash.
- DaemonManager: verify-before-adopt via get_info (nettype/height) instead of
  trusting a bare open RPC port, so a stale/orphan node is never adopted.

Node/Tor lifecycle + remote-node connectivity:
- config: torPrivacyLevel default -> allTorExceptNode. NEVER sync blocks over
  Tor; the wallet's node connection is always clearnet. Tor is only for tx
  broadcast, so remote nodes work with or without Tor.
- nodes: add Nodes::reconnect() (clear failure blocklist + force reconnect);
  node/Tor toggle handlers use it so a transient outage no longer strands the
  wallet at "Disconnected".
- MainWindow/SettingsDialog: reconnect on node/Tor toggle and on the async
  daemonStateChanged (closes the start() race; a freshly-toggled local node
  connects immediately).
- TorManager: reset retry/unpack state in init() so a system<->bundled Tor
  re-toggle can start again; quiesce on stop(). Linux unpackBins() rework
  (mkpath + presence-based unpack + graceful return-false), getVersion() arg
  fix, and a missing-binary start guard.
- build.yml: derive TOR_VERSION from the embedded tor binary (a hardcoded
  bundle number made unpackBins rewrite Tor every launch).
- depends/funcs.mk: confine cross-cmake find_package to the depends sysroot so
  host -dev libraries don't leak into the build.

contrib/depends/funcs.mk

@@ -198,6 +198,14 @@ ifneq ($(host),$(build))
 $(1)_cmake += -DCMAKE_SYSTEM_NAME=$($(host_os)_cmake_system)
 $(1)_cmake += -DCMAKE_C_COMPILER_TARGET=$(host)
 $(1)_cmake += -DCMAKE_CXX_COMPILER_TARGET=$(host)
+# wowlet: confine find_package to the depends sysroot so cross cmake builds don't grab host
+# /usr -dev packages (libzip's find_package(ZLIB) was picking up host zlib1g-dev). Mirrors
+# toolchain.cmake.in; no-op on clean CI, needed on dev boxes with -dev libs. Upstreamable.
+$(1)_cmake += -DCMAKE_FIND_ROOT_PATH=$(host_prefix)
+$(1)_cmake += -DCMAKE_FIND_ROOT_PATH_MODE_PROGRAM=NEVER
+$(1)_cmake += -DCMAKE_FIND_ROOT_PATH_MODE_LIBRARY=ONLY
+$(1)_cmake += -DCMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY
+$(1)_cmake += -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ONLY
 endif
 endif
 endef