Wire the HUD reticle into live_render.py

Integrates hud2d_overlay.HudTracker into the live pipeline: fed exactly one
wire record per firmware consumption (synchronized with r.qi, not just queue
arrival, so hud2d_root's view/display-list state matches what the firmware
has actually processed at render time), composited onto each rendered frame
before present.

Verified via the same integration pattern (truncated direct-queue boot, no
socket overhead) against netdeath-20260708.fifodump: the reticle composites
starting at wire command 22906 (frame 22) -- identical resolution point and
visual result to the standalone hud2d_overlay test. A full-mission run
through the live socket path is genuinely slow around this capture's "battle"
content (multi-billion firmware steps per command in that section, pre-
existing and unrelated to this change) but not stalled -- confirmed by
reaching the same cmd/frame numbers via the direct path in 14.7s.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

emulator/firmware-decomp/emu860c/live_render.py

@@ -29,6 +29,7 @@ from driver import boot, CpuShim
 from vrboard import A
 from texstore import build_texstore
 from gpu_raster import Renderer, W, H
+from hud2d_overlay import HudTracker, composite_hud
 ANAME = {int(a): a.name for a in A}
 emu860.Mem.log = lambda self, *a, **k: None
 
@@ -148,6 +149,7 @@ print("GPU:", g.ctx.info['GL_RENDERER'], flush=True)
 recs = list(catchup_recs)                   # running wire, for the texture store
 tex_dirty = bool(catchup_recs)
 renderer = Renderer(g.ctx, [])              # texlist filled once textures arrive
+hud = HudTracker()                          # cockpit reticle/pips (dpl2d overlay)
 pinned = False
 if PIN:
     renderer.texlist = list(build_texstore(parse_fifodump(PIN)).items())
@@ -233,6 +235,7 @@ while not stopped:
                     tex_dirty = False
                 img = renderer.frame(emu860c.dump_range)
                 if img is not None:
+                    composite_hud(img, hud, W, H)   # no-op until the reticle resolves
                     if not present(img, frames):
                         break
                     frames += 1
@@ -251,7 +254,9 @@ while not stopped:
                 break
         if stopped:
             break
-        if ANAME.get(r.queue[r.qi][0]) == 'draw_scene':
+        act, pl = r.queue[r.qi]
+        hud.feed(act, pl)                   # every record, in wire order, exactly
+        if ANAME.get(act) == 'draw_scene':   # once -- matches consumption, not arrival
             prev_draw = True
     if h(shim) == 'done':
         break