Release v2.29.0

- Transport I/O vtable over TCP/TLS; TLS multithreaded sendfile fixed
- Symlink-xattr wire block (protocol 2.29.0; config frame unchanged)
- No-wire parity burn-down: --inc-recursive, in-root --temp-dir,
  --delete-before phase-0, rsync-interoperable --fake-super, --devices
  per-entry failure, rsyncd.conf key subset (read-only default)
- Protocol version: 2.29.0
- Tested: unit, integration, ASan, UBSan, valgrind, differential parity

CHANGELOG.md

@@ -6,6 +6,8 @@ run the same version because the handshake is strict.
 
 ## [Unreleased]
 
+## [2.29.0] - 2026-09-23
+
 The rsync-parity cycle 2.29 (no wire change; `PROTOCOL_VERSION` stays 2.28.0).
 `RSYNC_COMPAT.md` moves from **116 ✅ / 14 ⚠️ / 27 ❌** to
 **120 ✅ / 10 ⚠️ / 27 ❌** of 157 rows.