feat: implement new claude skills and workflow

.claude/skills/incoherence/CLAUDE.md

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+# skills/incoherence/
+
+## Overview
+
+Incoherence detection skill using parallel agents. IMMEDIATELY invoke the
+script -- do NOT explore first.
+
+## Index
+
+| File/Directory           | Contents          | Read When          |
+| ------------------------ | ----------------- | ------------------ |
+| `SKILL.md`               | Invocation        | Using this skill   |
+| `scripts/incoherence.py` | Complete workflow | Debugging behavior |
+
+## Key Point
+
+The script IS the workflow. Three phases:
+
+- Detection (steps 1-12): Survey, explore, verify candidates
+- Resolution (steps 13-15): Interactive AskUserQuestion prompts
+- Application (steps 16-21): Apply changes, present final report
+
+Resolution is interactive - user answers structured questions inline. No manual
+file editing required.