feat: add Cursor IDE support with pre-translated configs

Add complete .cursor/ directory with rules, agents, skills, commands,
and MCP config adapted for Cursor's format. This makes ecc-universal
a truly cross-IDE package supporting Claude Code, Cursor, and OpenCode.

- 27 rule files with YAML frontmatter (description, globs, alwaysApply)
- 13 agent files with full model IDs and readonly flags
- 30 skill directories (identical Agent Skills standard, no translation)
- 31 command files (5 multi-* stubbed for missing codeagent-wrapper)
- MCP config with Cursor env interpolation syntax
- README.md and MIGRATION.md documentation
- install.sh --target cursor flag for project-scoped installation
- package.json updated with .cursor/ in files and cursor keywords

.cursor/skills/continuous-learning-v2/config.json

@@ -0,0 +1,41 @@
+{
+  "version": "2.0",
+  "observation": {
+    "enabled": true,
+    "store_path": "~/.claude/homunculus/observations.jsonl",
+    "max_file_size_mb": 10,
+    "archive_after_days": 7,
+    "capture_tools": ["Edit", "Write", "Bash", "Read", "Grep", "Glob"],
+    "ignore_tools": ["TodoWrite"]
+  },
+  "instincts": {
+    "personal_path": "~/.claude/homunculus/instincts/personal/",
+    "inherited_path": "~/.claude/homunculus/instincts/inherited/",
+    "min_confidence": 0.3,
+    "auto_approve_threshold": 0.7,
+    "confidence_decay_rate": 0.02,
+    "max_instincts": 100
+  },
+  "observer": {
+    "enabled": false,
+    "model": "haiku",
+    "run_interval_minutes": 5,
+    "min_observations_to_analyze": 20,
+    "patterns_to_detect": [
+      "user_corrections",
+      "error_resolutions",
+      "repeated_workflows",
+      "tool_preferences",
+      "file_patterns"
+    ]
+  },
+  "evolution": {
+    "cluster_threshold": 3,
+    "evolved_path": "~/.claude/homunculus/evolved/",
+    "auto_evolve": false
+  },
+  "integration": {
+    "skill_creator_api": "https://skill-creator.app/api",
+    "backward_compatible_v1": true
+  }
+}