feat(fuzz): improve fuzzing effectiveness, better timeouts, and comprehensive seeds, reproduction tooling

[vyavdoshenko]

Closes: #5712
Depends on: romange/container-foundry#24

Improves the AFL++ fuzzing infrastructure to increase crash detection effectiveness.

Changes:

Fuzzing Configuration (run_fuzzer.sh):

• Reduced timeout from 10s to 500ms for faster iteration
• Added CMPLOG mode (-l 2) for automatic command discovery
• Added memory limit (4GB)
• Set AFL_HANG_TMOUT=60000 to avoid false positive hangs
• Disabled dangerous commands: SHUTDOWN, DEBUG, FLUSHALL, FLUSHDB

Socket Timeout (dfly_main.cc):

• Increased socket timeout from 100ms to 2s to allow complex commands to complete

New Seed Files:

• Added new seeds covering

Dictionary Expansion (resp.dict):

• Added new entries: scripting commands, bitfield operations, sorted set operations, edge case numbers, JSON paths, RESP protocol edge cases, Lua patterns

Documentation (FUZZING.md):

• Added guide for AFL_PERSISTENT_RECORD usage
• Documented crash replay procedures for stateful bugs

GitHub Actions:

• Updated container image to ghcr.io/romange/ubuntu-dev:24-afl with pre-built AFL++
• Added AFL_PERSISTENT_RECORD=1000 for crash replay support
• Simplified AFL++ verification step

[augmentcode]

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