feat: complete OpenCode plugin support with hooks, tools, and commands

Major OpenCode integration overhaul:

- llms.txt: Comprehensive OpenCode documentation for LLMs (642 lines)
- .opencode/plugins/ecc-hooks.ts: All Claude Code hooks translated to OpenCode's plugin system
- .opencode/tools/*.ts: 3 custom tools (run-tests, check-coverage, security-audit)
- .opencode/commands/*.md: All 24 commands in OpenCode format
- .opencode/package.json: npm package structure for opencode-ecc
- .opencode/index.ts: Main plugin entry point

- Delete incorrect LIMITATIONS.md (hooks ARE supported via plugins)
- Rewrite MIGRATION.md with correct hook event mapping
- Update README.md OpenCode section to show full feature parity

OpenCode has 20+ events vs Claude Code's 3 phases:
- PreToolUse → tool.execute.before
- PostToolUse → tool.execute.after
- Stop → session.idle
- SessionStart → session.created
- SessionEnd → session.deleted
- Plus: file.edited, file.watcher.updated, permission.asked, todo.updated

- 12 agents: Full parity
- 24 commands: Full parity (+1 from original 23)
- 16 skills: Full parity
- Hooks: OpenCode has MORE (20+ events vs 3 phases)
- Custom Tools: 3 native OpenCode tools

The OpenCode configuration can now be:
1. Used directly: cd everything-claude-code && opencode
2. Installed via npm: npm install opencode-ecc

.opencode/commands/instinct-status.md

@@ -0,0 +1,75 @@
+---
+description: View learned instincts with confidence scores
+agent: build
+---
+
+# Instinct Status Command
+
+Display learned instincts and their confidence scores: $ARGUMENTS
+
+## Your Task
+
+Read and display instincts from the continuous-learning-v2 system.
+
+## Instinct Location
+
+Global: `~/.claude/instincts/`
+Project: `.claude/instincts/`
+
+## Status Display
+
+### Instinct Summary
+
+| Category | Count | Avg Confidence |
+|----------|-------|----------------|
+| Coding | X | 0.XX |
+| Testing | X | 0.XX |
+| Security | X | 0.XX |
+| Git | X | 0.XX |
+
+### High Confidence Instincts (>0.8)
+
+```
+[trigger] → [action] (confidence: 0.XX)
+```
+
+### Learning Progress
+
+- Total instincts: X
+- This session: X
+- Promoted to skills: X
+
+### Recent Instincts
+
+Last 5 instincts learned:
+
+1. **[timestamp]** - [trigger] → [action]
+2. **[timestamp]** - [trigger] → [action]
+...
+
+## Instinct Structure
+
+```json
+{
+  "id": "instinct-123",
+  "trigger": "When I see a try-catch without specific error type",
+  "action": "Suggest using specific error types for better handling",
+  "confidence": 0.75,
+  "applications": 5,
+  "successes": 4,
+  "source": "session-observation",
+  "timestamp": "2025-01-15T10:30:00Z"
+}
+```
+
+## Confidence Calculation
+
+```
+confidence = (successes + 1) / (applications + 2)
+```
+
+Bayesian smoothing ensures new instincts don't have extreme confidence.
+
+---
+
+**TIP**: Use `/evolve` to cluster related instincts into skills when confidence is high.