feat(pack): add official provider templates and loader test

- Add first batch of 10 official provider templates (qwen, glm, kimi, minimax, deepseek, step)
- Add TestLoadPathIncludesFirstBatchOfficialProviders to verify pack loads all templates
- Regenerate checksums.txt with all official provider files
- Bump pack version 1.0.1 -> 1.1.0
- Update README with provider manifest index and import examples

internal/pack/source_loader_test.go

@@ -19,6 +19,36 @@ func TestLoadPathSupportsDirectory(t *testing.T) {
 	}
 }
 
+func TestLoadPathIncludesFirstBatchOfficialProviders(t *testing.T) {
+	loaded, err := LoadPath(filepath.Join("..", "..", "packs", "openai-cn-pack"))
+	if err != nil {
+		t.Fatalf("LoadPath(dir) error = %v", err)
+	}
+
+	got := make(map[string]struct{}, len(loaded.Providers))
+	for _, provider := range loaded.Providers {
+		got[provider.ProviderID] = struct{}{}
+	}
+
+	want := []string{
+		"qwen-official",
+		"qwen-coder-official",
+		"deepseek-chat-official",
+		"deepseek-reasoner-official",
+		"glm-5-1-official",
+		"glm-4-7-official",
+		"kimi-k2-5-official",
+		"kimi-k2-thinking-official",
+		"minimax-m2-7-official",
+		"step-3-5-flash-official",
+	}
+	for _, providerID := range want {
+		if _, ok := got[providerID]; !ok {
+			t.Fatalf("Providers missing %q; got %v", providerID, providerIDs(loaded.Providers))
+		}
+	}
+}
+
 func TestLoadPathSupportsZipArchive(t *testing.T) {
 	tempDir := t.TempDir()
 	archivePath := filepath.Join(tempDir, "openai-cn-pack.zip")
@@ -86,3 +116,11 @@ func writePackArchive(t *testing.T, archivePath string) {
 		t.Fatalf("Close archive writer: %v", err)
 	}
 }
+
+func providerIDs(providers []ProviderManifest) []string {
+	ids := make([]string, 0, len(providers))
+	for _, provider := range providers {
+		ids = append(ids, provider.ProviderID)
+	}
+	return ids
+}