Replace patchelf crack with Freeloader LD_PRELOAD approach

- Multi-stage Dockerfile: discover patterns from PMS binary (capstone),
  compile .so with zig (musl), layer onto lscr.io/linuxserver/plex
- Uses LD_PRELOAD instead of patchelf (which corrupts Plex's musl loader)
- Auto-discovery: broad structural patterns with string-anchored fallback
  (//feature) and relationship-based fallback (BITSET_REF within BS_INIT)
- hook.cpp uses __has_include for generated patterns with hardcoded fallbacks
- Custom wrapper.sh (no traffic_logger preload)
- Vendored Freeloader source (github.com/authrequest/Freeloader, AGPL-3.0)
- Removed stale plexmediaserver_crack.so binary
- Supports Plex 1.43.3+ (verified against 1.43.2 and 1.43.3)

Freeloader/.gitignore

@@ -0,0 +1,87 @@
+# ─── Secrets / local machine config (NEVER COMMIT) ───────────────────────
+# .mcp.json here held a plaintext SSH password — keep all local creds out.
+.mcp.json
+.env
+.env.*
+*.pem
+*.key
+*_rsa
+*_rsa.pub
+id_ed25519*
+id_rsa*
+
+# ─── Copyrighted Plex binaries (do NOT redistribute) ─────────────────────
+/Plex_Media_Server
+/Plex Media Server
+pms.bin
+libsoci_core.so
+
+# ─── IDA Pro databases (large; derived from the copyrighted binary) ──────
+*.i64
+*.idb
+*.id0
+*.id1
+*.id2
+*.nam
+*.til
+
+# ─── Compiled output (from github/gitignore: C++) ────────────────────────
+*.o
+*.obj
+*.lo
+*.slo
+*.gch
+*.pch
+*.d
+*.a
+*.la
+*.lai
+*.lib
+*.so
+*.so.*
+*.dylib
+*.dll
+*.out
+*.app
+*.exe
+
+# ─── Build dirs / generated ───────────────────────────────────────────────
+build/
+Build/
+build-*/
+dist/
+CMakeFiles/
+CMakeCache.txt
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+
+# ─── Toolchain auto-downloaded by build.sh ────────────────────────────────
+toolchain/
+
+# ─── Python (plex_relay / scripts/plex-tailnet) ───────────────────────────
+__pycache__/
+*.py[cod]
+*.egg-info/
+.eggs/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.venv/
+venv/
+.tox/
+
+# ─── Temp / logs ──────────────────────────────────────────────────────────
+*.tmp
+*.log
+*.bak
+*.swp
+*~
+.cache/
+
+# ─── OS / editor cruft ────────────────────────────────────────────────────
+.DS_Store
+Thumbs.db
+desktop.ini
+.idea/
+.vscode/