fix(openviking): target-aware mirror subdir, drop private-attr access, dedupe URI builder

- on_memory_write: map target='memory' -> patterns/, 'user' -> preferences/
  (was hardcoded to preferences/ for both)
- Replace client._user with self._user (no private-attr leakage)
- Extract _build_memory_uri() helper + module-level subdir maps
- Restore on_memory_write signature parity with MemoryProvider base
  (metadata kwarg; eliminates Pyright incompatible-override warning)
- AUTHOR_MAP entry for chrisdlc119@outlook.com

scripts/release.py

@@ -64,6 +64,7 @@ AUTHOR_MAP = {
     "nat@nthrow.io": "nthrow",
     "m@mobrienv.dev": "mikeyobrien",
     "saeed919@pm.me": "falasi",
+    "chrisdlc119@outlook.com": "chdlc",
     "omar@techdeveloper.site": "nycomar",
     "qiyin.zuo@pcitc.com": "qiyin-code",
     "mr.aashiz@gmail.com": "aashizpoudel",