fix(codex): fix TOML parser double-quoting section keys + add macOS trust paths

- Minimal TOML parser (Python < 3.11 fallback) now strips quotes from section
  keys like [projects."/home"] — prevents double-quoting on re-parse
- Add /Users and /var/root to trust_paths on macOS

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

codex/codex_patcher.py

@@ -46,7 +46,7 @@ except ModuleNotFoundError:
                         continue
                     m = _re.match(r'^\[([^\]]+)\]$', line)
                     if m:
-                        keys = [k.strip() for k in m.group(1).split(".")]
+                        keys = [k.strip().strip('"') for k in m.group(1).split(".")]
                         cur = result
                         for k in keys:
                             cur = cur.setdefault(k, {})
@@ -301,8 +301,12 @@ def generate_config_toml(existing, config):
             for k, v in provider.items():
                 lines.append(f"{k} = {toml_value(v)}")
 
-    # Trust paths
-    trust_paths = config.get("trust_paths", ["/home", "/root", "/tmp"])
+    # Trust paths (add platform-specific paths)
+    trust_paths = list(config.get("trust_paths", ["/home", "/root", "/tmp"]))
+    if IS_MACOS:
+        for mp in ["/Users", "/var/root"]:
+            if mp not in trust_paths:
+                trust_paths.append(mp)
     existing_projects = existing.get("projects", {})
 
     # Add our trust paths