feat: expand platform coverage with 8 new adaptors, 7 new CLI agents, and OpenCode skill tools

Phase 1 - OpenCode Integration:
- Add OpenCodeAdaptor with directory-based packaging and dual-format YAML frontmatter
- Kebab-case name validation matching OpenCode's regex spec

Phase 2 - OpenAI-Compatible LLM Platforms:
- Extract OpenAICompatibleAdaptor base class from MiniMax (shared format/package/upload/enhance)
- Refactor MiniMax to ~20 lines of constants inheriting from base
- Add 6 new LLM adaptors: Kimi, DeepSeek, Qwen, OpenRouter, Together AI, Fireworks AI
- All use OpenAI-compatible API with platform-specific constants

Phase 3 - CLI Agent Expansion:
- Add 7 new install-agent paths: roo, cline, aider, bolt, kilo, continue, kimi-code
- Total agents: 11 -> 18

Phase 4 - Advanced Features:
- OpenCode skill splitter (auto-split large docs into focused sub-skills with router)
- Bi-directional skill format converter (import/export between OpenCode and any platform)
- GitHub Actions template for automated skill updates

Totals: 12 --target platforms, 18 --agent paths, 2915 tests passing

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/test_adaptors/test_deepseek_adaptor.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+"""Tests for DeepSeek AI adaptor"""
+
+import json
+import tempfile
+import unittest
+import zipfile
+from pathlib import Path
+
+from skill_seekers.cli.adaptors import get_adaptor, is_platform_available
+
+
+class TestDeepSeekAdaptor(unittest.TestCase):
+    def setUp(self):
+        self.adaptor = get_adaptor("deepseek")
+
+    def test_platform_info(self):
+        self.assertEqual(self.adaptor.PLATFORM, "deepseek")
+        self.assertEqual(self.adaptor.PLATFORM_NAME, "DeepSeek AI")
+        self.assertIn("deepseek", self.adaptor.DEFAULT_API_ENDPOINT)
+        self.assertEqual(self.adaptor.DEFAULT_MODEL, "deepseek-chat")
+
+    def test_platform_available(self):
+        self.assertTrue(is_platform_available("deepseek"))
+
+    def test_env_var_name(self):
+        self.assertEqual(self.adaptor.get_env_var_name(), "DEEPSEEK_API_KEY")
+
+    def test_supports_enhancement(self):
+        self.assertTrue(self.adaptor.supports_enhancement())
+
+    def test_package_metadata(self):
+        with tempfile.TemporaryDirectory() as temp_dir:
+            skill_dir = Path(temp_dir) / "test-skill"
+            skill_dir.mkdir()
+            (skill_dir / "SKILL.md").write_text("Test")
+
+            output_dir = Path(temp_dir) / "output"
+            output_dir.mkdir()
+
+            pkg = self.adaptor.package(skill_dir, output_dir)
+            self.assertIn("deepseek", pkg.name)
+
+            with zipfile.ZipFile(pkg) as zf:
+                meta = json.loads(zf.read("deepseek_metadata.json"))
+                self.assertEqual(meta["platform"], "deepseek")
+                self.assertIn("deepseek", meta["api_base"])
+
+
+if __name__ == "__main__":
+    unittest.main()