[parthod0x]

The -conf config-file parser in argparser.h copies fixed-length data into
heap buffers without room for a null terminator or a bound on the copy length.
Three memory-safety bugs are reachable from a config file, all confirmed with
AddressSanitizer in isolated reproductions:

1. seed over-read (relates to getNodeIpList crashes #13). malloc(55); memset(0,55); memcpy(…,55)
   fills all 55 bytes with no terminator. sanityCheckSeed() then calls
   strlen(g_seed) (sanity_check.h) which reads past the allocation —
   heap-buffer-overflow, READ of size 56.
2. seed source over-read. The same memcpy(…, 55) reads 55 bytes from the
   config value even when it is shorter, over-reading the source string.
3. node_ip write overflow. memcpy(g_nodeIp, v[1].c_str(), v[1].size())
   into a 64-byte buffer with no bound — a node_ip value longer than 64 chars
   overflows it (heap-buffer-overflow, WRITE).

Fix

• seed: allocate 56 bytes (55-char seed + terminator) and copy at most the
  value's own length (capped at 55). strlen() now stops in-bounds and short
  values are not over-read.
• node_ip: cap the copy at 63 bytes so the 64th stays a terminator, and
  guard the trailing-newline check against an empty value.

The command-line -seed / -nodeip paths were already safe (they point at
null-terminated argv), and the msvault vault-name parser already bounds its
copy with if (len > 32) len = 32; — this brings the config path in line.

Verification

• The three overflows reproduce under ASAN on current main; the patched logic
  eliminates all three (seed strlen in-bounds for 10/55/60-char values;
  node_ip capped for 100-char values; no source over-read).
• g++ -std=c++17 -fsyntax-only argparser.h passes.

Related to #13 (the seed null-termination report there is still present in the
config path; #13's other two reports — the printSystemInfoFromNode hex and the
getNodeIpList peer loop — are already resolved on current main).

[fnordspace]

LGTM, Thank you for submitting the fix.