Implement consistency architecture (10-principle framework)

Adds:
- ARCHITECTURE.md: Full documentation of 3-layer system
- Context Pipeline: Preprocessing layer (pipeline.js)
- Workflow Router: 4 fixed workflows (coding, debug, deploy, audit)
- Validation Layer: Post-response quality gate (validator.js)
- Format Templates: Structured output templates
- TOOLS.md: Beavault connection documentation

Architecture:
- Layer 1: Behavior rules (always injected)
- Layer 2: Persistent facts (structured memory)
- Layer 3: Ephemeral context
- Priority enforcement: Rules > Prefs > Task > Chat
- Memory write policy: Only confirmed fixes, repeated preferences

workflows/debug.md

@@ -0,0 +1,40 @@
+# Workflow: Troubleshooting
+
+## Intent Classification
+
+**Triggers:** Errors, failures, unexpected behavior, debugging requests
+
+## Fixed Output Format
+
+```markdown
+## Problem
+[Symptom observed]
+
+## Diagnosis
+- Checked: [what was checked]
+- Found: [what was found]
+
+## Cause
+[Root cause - trace to why, not just what]
+
+## Fix
+[What was changed]
+
+## Validation
+[How verified it's fixed]
+```
+
+## Tool Access Rules
+
+1. **Inspect first** - logs, config, state before changing anything
+2. **Reproduce** - understand the failure before fixing
+3. **Trace to root** - fix cause, not symptom
+4. **Document** - add to ISSUES.md if pattern
+
+## Constraints
+
+- NO: Restart-as-first-response
+- NO: Regex patches without understanding root cause
+- NO: Fixes without verification
+- YES: Documented workaround if root cause blocked
+- YES: Regression test if applicable