Add FLYK render harness from VWETEST diagnostic suite

The production image's VWETEST diagnostic suite provides a clean,
game-independent render harness. FLYK (VGLTEST, 32rtm build, newer
token-based sync) + clear.scn drives the ENTIRE VPX protocol through
the emulated board with zero errors: boot, iserver handshake, i860
download, token sync, scene build, draw_scene, frame-ack, clean exit
('Exiting rendering'). This validates the VPX emulation for an
arbitrary DPL renderer, not just the game.

Notes: the CYCLE flyk is a DOS/4GW build using the OLDER DPL3-style
velocirender_sync (action-check) and needs separate handling; the
VPX/DBE0151 iserver board test + reference TGAs are a future
golden-image validation avenue.

Adds RENDER-HARNESS.md and harness configs (flyk/cycle/alpha1).
Next (Phase 3): flyk DIVRGB.SCN color bars -> decode FIFO geometry
(same DIV-BIZ2 formats as restoration/divformats.py) -> OpenGL.

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

emulator/alpha1.conf

@@ -0,0 +1,26 @@
+[sdl]
+output=opengl
+[dosbox]
+memsize=32
+machine=svga_s3
+[cpu]
+core=normal
+cputype=pentium
+cycles=20000
+[serial]
+serial1=directserial realport:COM1
+serial2=disabled
+[autoexec]
+mount c "C:\VWE\TeslaRel410\ALPHA_1"
+c:
+cd \REL410\BT
+set VIDEOFORMAT=svga
+set BLASTER=A220 I5 D1 H5 P330 T6
+set TEMP=c:\
+call setenv.bat r s n n
+call showenv.bat
+32rtm.exe -x
+btl4opt.exe -egg test.egg
+32rtm.exe -u
+echo ALPHA1-RUN-DONE
+pause