v0.4.0: Bounded discovery and actionable review guidance

Bounded discovery and actionable review guidance

• Guidance suggestions use {toolName, reason, args} for local tools; map results prefill evidence-preserving triage calls (#12, #13).
• Enumeration and guidance expose byte-aware pages and explicit coverage; migrate enumeration counts to discoveredCount and current-page returnedCount, and notices to pageInstructions (#32).
• Guidance topics select the relevant evidence and treat observed ports as informational inventory context (#33).
• Shodan search exposes opt-in page continuation; DNS/TLS return exact host remainders while processing at most 50 hosts (#31, #34).
• Updated usage and protocol documentation; deps: zod ^4.6.5 → ^4.6.7, vitest ^5.0.3 → ^5.0.4, @vitest/coverage-istanbul 5.0.3 → 5.0.4.

CHANGELOG v0.4.0 · release PR #39