re_match: byte-match functions with the game's compiler (Visual C++ 2003)

Runs R:/Workspace/Tools/re/match71.py for up to 50 addresses from main or
an agent's worktree; configured by matcher/match_flags in [reverse].

harbor/reverse.py

@@ -452,3 +452,32 @@ class Debugger:
                 pass
             self.proc.terminate()
         self.proc = None
+
+
+def match_functions(config, targets, decomp=None, flags=None):
+    """Compile functions with the game's compiler (Visual C++ 2003) and compare them with the original bytes.
+    targets: addresses ("0x4ADC70, 0x412F70"); decomp: the checkout or worktree whose src/ holds them."""
+    import subprocess
+    import sys
+    import tempfile
+    config = config or {}
+    matcher = config.get("matcher")
+    if not matcher:
+        raise HarborError("this project has no matcher in its [reverse] table")
+    wanted = [t.strip() for t in re.split(r"[,\s]+", str(targets)) if t.strip()]
+    if not wanted or len(wanted) > 50:
+        raise HarborError("give 1 to 50 addresses")
+    with tempfile.TemporaryDirectory(dir=config.get("debugger_temp")) as tmp:
+        out = Path(tmp) / "match.json"
+        command = [sys.executable, "-B", str(matcher), "--all", "--only", ",".join(wanted), "--json", str(out),
+                   "--flags", flags or config.get("match_flags", "-TC -O2")]
+        if decomp:
+            command += ["--decomp", str(decomp)]
+        result = subprocess.run(command, capture_output=True, text=True, encoding="utf-8", errors="replace",
+                                timeout=600, creationflags=getattr(subprocess, "CREATE_NO_WINDOW", 0))
+        if not out.exists():
+            raise HarborError("the matcher failed: " + (result.stdout + result.stderr).strip()[-800:])
+        rows = json.loads(out.read_text(encoding="utf-8"))
+    errors = [line for line in result.stdout.splitlines() if "compile errors" in line]
+    return {"results": rows, "summary": result.stdout.strip().splitlines()[0] if result.stdout.strip() else "",
+            **({"compile": errors[0]} if errors else {})}