feat(ecc): prune plugin 43→12 items, promote 7 rules to .claude/rules/ (#245)

ECC community plugin pruning: removed 530+ non-essential files
(.cursor/, .opencode/, docs/ja-JP, docs/zh-CN, docs/zh-TW,
language-specific skills/agents/rules). Retained 4 agents,
3 commands, 5 skills. Promoted 13 rule files (8 common + 5
typescript) to .claude/rules/ for CC native loading. Extracted
reusable patterns to EXTRACTED-PATTERNS.md.

.opencode/commands/instinct-status.md

@@ -1,75 +0,0 @@
----
-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.