Phase 1 complete: captured VPX boot conversation from shipped binary

Built DOSBox-X from source with a custom VPX link-adapter logging
device (vpx-device/vpxlog.cpp) and captured the game's outbound boot
sequence. Findings:

- Register map confirmed against LINKIO.C: outputData 0x151,
  outputStatus 0x153 (polled bit0), resetRoot 0x160, analyseRoot 0x161.
- Reset preamble captured exactly (analyse=0, reset 0->1->0 + status inits).
- The game streams 85298 bytes to outputData that are BYTE-FOR-BYTE
  identical to VRENDMON.BTL; first byte 0xF0 = transputer boot-from-link
  primary-bootstrap length. Protocol stage 1 (reset + monitor download)
  fully characterized; no hidden bulk/interrupt path.
- Production cockpit dump ALPHA_1 added (git-ignored): its BT is v1.1.0.6
  with a VRENDMON.BTL byte-identical to the captured stream, so this
  result reflects the exact cockpit software. ALPHA_1 is the reference
  image going forward (carries RP + production pod/network boot chain).

Adds analyze_capture.py, capture.conf, PHASE1-RESULTS.md. DOSBox-X
source tree and capture artifacts are git-ignored.

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

emulator/.gitignore

@@ -4,3 +4,8 @@ image/
 *.png
 dbx_out.txt
 dbx_err.txt
+src/
+vpxlog.txt
+sent_hex.txt
+build.log
+run_build.sh