Correctness and memory-safety hardening across lock, route, and config paths

[JeremiahM37]

Fixes F-2057, F-2058, F-2059, F-2063, F-2066, F-2067, F-2068, F-2440, F-2447, F-2455, F-2830, F-2850, F-2851, F-3184, F-3185, F-3192, F-3193

• Release locks on error-return paths in event/action/lwip install functions
• Plug leaks in JSON init, dict dump, and kv_clone; cap JSON parser size; fix KV string JSON escaping
• Register LINK64 in ntop/render; correct last_af_wildcard_route insert and delete tracking
• Snapshot route config before dropping parent_event to avoid route_free_1 use-after-free
• Treat max_connection_count=0 as unlimited; reject non-decisional default_policy values
• Add regression tests for penaltybox/greenlist order, default_policy guard, LINK64 roundtrip, unlimited connections, and JSON string escapes

[wolfSSL-Fenrir-bot]

Fenrir Automated Review — PR #82

Scan targets checked: wolfsentry-bugs, wolfsentry-src

No new issues found in the changed files. ✅