Fix CI: macOS deserializer compile failure and Windows CMD infinite recursion

[Copilot]

Two independent CI failures preventing the build-v8dasm workflow from completing on both platforms.

macOS ARM64 — deserializer.cc compile error

Cause: \s* prefix in the semantic patch regex consumed the preceding newline, collapsing #endif // DEBUG and } onto one line. The } became part of the // DEBUG comment, leaving the constructor unclosed and producing 12+ cascading errors.

# Before — \s* eats the newline before CHECK_EQ, joining it with the #endif line
pattern = r'\s*CHECK_EQ\s*\(\s*magic_number_\s*,\s*SerializedData::kMagicNumber\s*\)\s*;?\s*\n?'
# Result: "#endif  // DEBUG}" — '}' is inside the comment, constructor never closed

# After — [ \t]* matches only horizontal whitespace, preserves line boundaries
pattern = r'[ \t]*CHECK_EQ\s*\(\s*magic_number_\s*,\s*SerializedData::kMagicNumber\s*\)[^\n]*\n'
# Result: "#endif  // DEBUG\n}\n" — correct

Windows x64 — exit code 255

Cause: apply-patch.cmd used call :reset_to_clean_state as a subroutine but the label had no goto :eof terminator. Execution fell through into every subsequent label, recursing back into :reset_to_clean_state until CMD's call stack overflowed. Each iteration was near-instant (git failing immediately), so the whole crash happened in ~100ms.

Changes to apply-patch.cmd:

• Restructured into proper CMD subroutines — each function ends with goto :eof, main flow uses explicit call :fn + if %errorlevel% equ 0 exit /b 0 chain
• Added chcp 65001 at startup for UTF-8 support (emoji in echo without this could also cause abnormal termination)
• Added git config --global --add safe.directory for the V8 repo to prevent git ownership errors
• Removed emoji characters (✅, ❌) from echo statements to eliminate encoding fragility

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• chromium.googlesource.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

帮我看看ci出什么问题了

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