Harden Playerbot event processing and diagnostics

[MadMaxMangos]

Summary

• bound Playerbot action-log formatting and write formatted messages as literal text
• preserve FIFO arrival order for queued external events without inserting unknown handlers
• reject invalid or non-logged-in queued opcodes, retain packet ownership through dispatch, and contain malformed packet parsing
• add opt-in packet, event-query, and AI-evaluation performance counters via AiPlayerbot.PerformanceMetricsInterval

Verification

• ctest --test-dir E:\Mangos\WIP\Zero\Testing\server_build_playerbot_arch_followups -C RelWithDebInfo --output-on-failure
• 15/15 tests passed, including the Playerbot log, queue, packet-policy, and performance-monitor coverage
• deployed ab6114c0 runtime smoke with 30 random bots online and active combat, XP, and loot processing; no crash, assertion, malformed packet, or invalid-opcode symptom observed
• each focused commit received a bounded Claude Opus 5 review; final verdicts approved with no blocking or important findings

Scope

Existing random-bot death, revive, and teleport churn was observed during the smoke test and is intentionally left for a separate focused investigation.

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This change is 

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 44 complexity · 0 duplication

Metric	Results
Complexity	44
Duplication	0

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