chore(openspec): drop 9 superseded proposals + 11 stub archive files

Drop 9 batch proposals that are superseded by the boocode-lift-analysis
(boocontext-audit, conductor upgrades, self-healing/verify-gate skills):
add-3tier-memory, import-llm-evaluator, import-pregel-engine, plugin-platform,
conductor-evolution, code-intelligence-upgrade, dev-workflow, ui-overhaul,
agent-reliability.

Delete 11 stub archive files (49-66B each, 'Status: Shipped. Archived.' only)
that provide zero documentation value over the existing CHANGELOG.md + git tags.

openspec/changes/add-behavioral-engine/design.md

@@ -0,0 +1,32 @@
+## Context
+
+BooCode has no structured behavioral enforcement. Agent behavior is guided by system prompts and CLAUDE.md — advisory, not enforceable. The `boocontext-audit` package (already TypeScript, already in /opt/forks) provides a complete behavioral compliance engine: Guideline model, 6-batch matcher, relational resolver, audit trail, and graded recovery.
+
+## Goals / Non-Goals
+
+**Goals:**
+- Import boocontext-audit's Guideline model (condition/action rules with criticality)
+- Import multi-batch matcher (Observational, Actionable, PreviouslyApplied, Disambiguation, ResponseAnalysis, LowCriticality)
+- Import RelationalResolver (DEPENDS_ON, PRIORITIZES, ENTAILS, TAG_ALL, TAG_PRIORITIZES)
+- Import audit middleware (PostToolUse, Stop, UserPromptSubmit hooks)
+- Import graded context recovery (L0-L4)
+- Wire guideline evaluation into agent's inference loop
+
+**Non-Goals:**
+- Journey DAG integration (future scope)
+- MCP middleware integration (focus on in-process hooks)
+
+## Decisions
+
+- **Direct import from local fork**: boocontext-audit is at `/opt/forks/boocontext-audit/`. Use workspace dependency or npm link.
+- **Guideline storage**: InMemoryGuidelineStore for development, FileRelationshipStore for production.
+- **Batch execution**: Run observable + actionable batches in parallel, then disambiguation, then response analysis.
+- **SchematicGenerator**: Abstract LLM caller. Configure per-batch model (use cheap model for matching, expensive for disambiguation).
+- **Audit hooks**: Wire PostToolUse → appendToBuffer(), Stop → flushBuffer(), UserPromptSubmit → injectSessionContext().
+- **Recovery**: Load L0 (index) by default. L2 (user corrections) on /recover. L3 (full) on /recover full.
+
+## Risks / Trade-offs
+
+- **LLM overhead**: Each batch is an LLM call. 6 batches × N guidelines could be expensive. Mitigation: batch size limits, parallel execution.
+- **Cold start**: No guidelines exist initially. Users must define them. Ship with 5-10 built-in safety guidelines.
+- **boocontext-audit maturity**: v0.1.0. Review code quality before direct import.