Fix id-namespace regression, add StrikeRequest type, kill full-panel

rerender on assign/alive/shell, add Windows build tooling

- Board.add_target/add_ally's id auto-assignment used a bare
  next(c for c in string.ascii_uppercase if c not in used), which
  raises StopIteration once 26 entities of a group exist -- a real
  crash confirmed via a live traceback, and a direct regression from
  moving that sequence from per-type to per-group. This was the actual
  cause of "Accept as"/"Accept all" silently doing nothing. Fixed with
  _next_free_id(), which rolls over to two-letter ids instead of
  raising.
- New TargetType.STRIKE_REQUEST: the bearing/distance-offset "taking
  fire" fire-support request (see the earlier two-entity split) now
  creates this instead of reusing STRIKE, so a radioed-in request is
  never confused with a strike the player placed themselves. Same
  crosshair icon, excluded from type pickers/dedupe like STRIKE.
- The "Accept as..." popover on a detected map marker now uses the
  same icon grid the entity-edit "Change type" popover does (was a
  plain unfiltered text list of every TargetType, which also wrongly
  offered STRIKE/STRIKE_REQUEST as pickable).
- Firing panel: _cycle_assignment/_toggle_alive/_pick_shell no longer
  route through app.py's full solver+dedupe+canvas+panel refresh --
  none of the three can affect the solver or dedupe, and none change
  which cards exist or their order (except _toggle_alive in
  hide/sort_later mode). New FiringPanel._rebuild_one() rebuilds just
  the one changed card; on_visual_change is a new, lighter callback
  (just a map redraw) for the two of these three that actually affect
  it. This was a real, confirmed lag source with many units on the
  board: every click on any of these was previously rebuilding every
  card of every target.
- Map right-click entity menu: added "Mark destroyed"/"Mark alive",
  reusing the same cheap-refresh path (new
  FiringPanel.refresh_after_alive_change).
- packaging/windows/: a from-scratch (untested against a real boot)
  MSYS2 + WiX .msi build pipeline for Windows, driven from Linux via
  dockur/windows (KVM-in-container), no Windows machine or GitHub
  required. See its own README for status/caveats.
- New/updated tests: id-namespace sharing + the 26-entity overflow
  regression (tests/test_models.py), StrikeRequest split
  (tests/test_ocr.py), warp_to_map's img_scale param
  (tests/test_map_vision_warp.py). 44/44 passing.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

packaging/windows/oem/product.wxs

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Hand-authored shell: directory layout, the Start Menu shortcut, and the
+  PYTHONPATH environment variable the shortcut relies on (see run.sh's
+  equivalent `PYTHONPATH=src python -m fenigma.app`). The actual app/
+  runtime files are a separate auto-harvested fragment (files.wxs, built
+  by heat.exe in build.bat) referenced here only by its ComponentGroup id.
+
+  UpgradeCode below is a fixed, generated-once GUID: DO NOT regenerate
+  it, that's what lets a newer .msi upgrade an older install in place
+  instead of installing side by side. ProductCode is left as "*" (auto-
+  generated per build), which is the normal WiX pattern.
+
+  UNTESTED (see build.bat's top-of-file note).
+-->
+<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
+  <Product Id="*"
+           Name="FEnigma"
+           Language="1033"
+           Version="$(var.AppVersion)"
+           Manufacturer="FEnigma"
+           UpgradeCode="DAB672A3-9E27-4F3F-8251-0AACD6E57B94">
+
+    <Package InstallerVersion="500" Compressed="yes" InstallScope="perMachine" />
+
+    <MajorUpgrade DowngradeErrorMessage="A newer version of FEnigma is already installed." />
+    <MediaTemplate EmbedCab="yes" />
+
+    <Directory Id="TARGETDIR" Name="SourceDir">
+      <Directory Id="ProgramFiles64Folder">
+        <Directory Id="INSTALLFOLDER" Name="FEnigma" />
+      </Directory>
+      <Directory Id="ProgramMenuFolder">
+        <Directory Id="ApplicationProgramsFolder" Name="FEnigma" />
+      </Directory>
+    </Directory>
+
+    <!-- AppFiles (all of dist\mingw64 + dist\src, harvested by heat.exe
+         into files.wxs) is referenced by id only: its actual file list
+         lives in that generated fragment, not here. -->
+    <Feature Id="MainFeature" Title="FEnigma" Level="1">
+      <ComponentGroupRef Id="AppFiles" />
+      <ComponentRef Id="ApplicationShortcutComponent" />
+    </Feature>
+
+    <DirectoryRef Id="ApplicationProgramsFolder">
+      <Component Id="ApplicationShortcutComponent" Guid="*">
+        <Shortcut Id="ApplicationStartMenuShortcut"
+                  Name="FEnigma"
+                  Description="Screen-reading helper for IRON NEST: Heavy Turret Simulator"
+                  Target="[INSTALLFOLDER]mingw64\bin\pythonw.exe"
+                  Arguments="-m fenigma.app"
+                  WorkingDirectory="INSTALLFOLDER" />
+        <RemoveFolder Id="CleanUpShortcut" On="uninstall" />
+        <!-- Machine-wide PYTHONPATH so the bundled mingw64\bin\pythonw.exe
+             (which knows nothing about this app on its own) can find the
+             fenigma package: same role run.sh's env var plays on Linux.
+             Permanent="no": removed again on uninstall. -->
+        <Environment Id="PythonPathEnv" Name="PYTHONPATH" Value="[INSTALLFOLDER]src"
+                     Permanent="no" Action="set" System="yes" Part="last" />
+        <RegistryValue Root="HKCU" Key="Software\FEnigma" Name="installed" Type="integer" Value="1" KeyPath="yes" />
+      </Component>
+    </DirectoryRef>
+
+    <!-- WixUI_Minimal: no EULA screen, so no WixUILicenseRtf override needed. -->
+    <UIRef Id="WixUI_Minimal" />
+  </Product>
+</Wix>