v4.12.0 — Deferred Init, Hooks, Flow Control, Skill Composer, Semantic Search

Phase 7 — Runtime Intelligence Layer

New Features

• Deferred Adapter Initialization — registerDeferred(name, factory, config) on AdapterRegistry; adapters created and initialized only on first use via resolveAdapterAsync(). executeAgent() auto-materializes transparently.
• Adapter Hook Middleware (AdapterHookManager) — beforeExecute / afterExecute / onError lifecycle hooks with priority ordering, payload/result mutation, and abort support.
• Flow Control on LockedBlackboard — pause() / resume() / isPaused() blocks writes while paused; setThrottle(ms) / getThrottle() enforces minimum interval between mutating operations.
• Skill Composer (SkillComposer) — chain(), batch(), loop(), verify() meta-operations for composing multi-agent workflows with concurrency limits and conditional loops.
• Semantic Memory Search (SemanticMemory) — BYOE in-memory vector store with cosine similarity, topK + threshold, and indexSnapshot() for bulk blackboard import.

Fixes

• CodeQL #91 — removed unused badResult variable in test-qa.ts
• CI: bumped github/codeql-action from 4.34.1 to 4.35.1 (PR #79)

Stats

• 94 new tests in test-phase7.ts
• 1,778 total tests across 22 suites — all passing
• 15 documentation files updated
• 3 new modules: lib/adapter-hooks.ts, lib/skill-composer.ts, lib/semantic-search.ts