[Installer] Make the Inno Setup installer the default, with its failure hook.

COCKATRICE_WIN_INSTALLER now defaults to InnoSetup. NSIS stays selectable for
one release as the legacy fallback, and the two can still be built from one
tree and compared on a real upgrade.

The switches question from the previous commit is settled from Inno Setup's
source: the setup command line is an if/else-if chain over the switches it
knows, with no fallback that rejects the rest, so /R, /PID= and /D= are
ignored rather than refused. The client therefore sends one command line that
drives either installer:

- /R and /PID= for NSIS, which also needs /D= last and unquoted;
- /VERYSILENT and the CloseApplications set for Setup, which releases the
  mapped runtime DLLs through Restart Manager instead of waiting for a pid;
- /UPDATER as the client's own mark, read only by the Inno Setup script.

An older client that passes only the NSIS switches still installs; it walks
the wizard once instead of running silently.

The Sentry offer that AbortInstall carried is ported: a silent run the updater
launched, which began replacing files and never reached the end, offers to
send its log through the same helper. The helper is embedded with a [Files]
dontcopy entry and extracted at send time; a repeated [Files] section merges
with the generated one instead of being a compile error. Setup prefixes every
log line with a timestamp, so the helper's ABORT scan now allows that prefix.

CI installs Inno Setup next to NSIS, dumps ISCCOutput.log and the generated
script when the installer fails to compile, and --package NSIS|InnoSetup
selects the installer through the CMake option instead of adding a second
CPack generator to the run.

CMakeLists.txt

@@ -327,19 +327,32 @@ if(UNIX)
     endif()
   endif()
 elseif(WIN32)
-  # Which tool writes the installer. NSIS is the incumbent and stays the default;
-  # InnoSetup selects CPack's own Inno Setup generator (see cmake/InnoSetup.cmake). Both
-  # consume the same install() rules, so this is a packaging choice, never a build change,
-  # and the two installers can be built from one tree and compared on a real upgrade.
+  # Which tool writes the installer. InnoSetup, through CPack's own Inno Setup generator
+  # (cmake/InnoSetup.cmake), is the default. NSIS stays selectable for one release as the
+  # fallback for anyone who needs the old installer, and so the two can still be built from
+  # one tree and compared on a real upgrade. Both consume the same install() rules, so this
+  # is a packaging choice, never a build change.
   set(COCKATRICE_WIN_INSTALLER
-      "NSIS"
-      CACHE STRING "Windows installer generator: NSIS (incumbent) or InnoSetup"
+      "InnoSetup"
+      CACHE STRING "Windows installer generator: InnoSetup (default) or NSIS (legacy)"
   )
   set_property(CACHE COCKATRICE_WIN_INSTALLER PROPERTY STRINGS NSIS InnoSetup)
   if(NOT COCKATRICE_WIN_INSTALLER MATCHES "^(NSIS|InnoSetup)$")
     message(FATAL_ERROR "COCKATRICE_WIN_INSTALLER must be NSIS or InnoSetup, not '${COCKATRICE_WIN_INSTALLER}'")
   endif()
 
+  # Installer-log sender for the failure hooks of both installers (values parsed out of
+  # COCKATRICE_SENTRY_DSN in cmake/CrashReporting.cmake). Generated only when a DSN was
+  # parsed: cmake/NSIS.template.in and cmake/InnoSetup.install.iss embed it under the same
+  # CPACK_SENTRY_ENABLED check, so a build without reporting never references or carries the
+  # helper. Configured above the installer choice because both branches consume it.
+  if(CPACK_SENTRY_ENABLED)
+    configure_file(
+      "${COCKATRICE_CMAKE_PATH}/SendInstallerLog.ps1.in" "${PROJECT_BINARY_DIR}/SendInstallerLog.ps1" @ONLY
+    )
+    set(COCKATRICE_SENTRY_INSTALLER_LOG "${PROJECT_BINARY_DIR}/SendInstallerLog.ps1")
+  endif()
+
   if(COCKATRICE_WIN_INSTALLER STREQUAL "InnoSetup")
     include(${COCKATRICE_CMAKE_PATH}/InnoSetup.cmake)
   else()
@@ -354,15 +367,6 @@ elseif(WIN32)
     configure_file("${COCKATRICE_CMAKE_PATH}/NSIS.definitions.nsh.in" "${PROJECT_BINARY_DIR}/NSIS.definitions.nsh")
   endif()
 
-  # Installer-log sender for the AbortInstall Sentry hook (values parsed out of COCKATRICE_SENTRY_DSN in
-  # cmake/CrashReporting.cmake). Generated only when a DSN was parsed: cmake/NSIS.template.in embeds it under
-  # the same CPACK_SENTRY_ENABLED check, so a build without reporting never references or carries the helper.
-  if(CPACK_SENTRY_ENABLED)
-    configure_file(
-      "${COCKATRICE_CMAKE_PATH}/SendInstallerLog.ps1.in" "${PROJECT_BINARY_DIR}/SendInstallerLog.ps1" @ONLY
-    )
-  endif()
-
   # Every runtime DLL a Windows install has to contain, as paths relative to the
   # install root. .ci/compile.sh reads this and fails the build when the packaged
   # installer is missing one of them, or carries a runtime it does not know about.