feat(ai): add support for Ollama AI provider configuration

* Update README with Ollama integration details
* Add Ollama configuration to example YAML files
* Implement Ollama provider in AI factory
* Add tests for Ollama provider functionality
* Enhance config validation for Ollama settings

internal/ai/factory.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 
 	"git.warky.dev/wdevs/amcs/internal/ai/litellm"
+	"git.warky.dev/wdevs/amcs/internal/ai/ollama"
 	"git.warky.dev/wdevs/amcs/internal/ai/openrouter"
 	"git.warky.dev/wdevs/amcs/internal/config"
 )
@@ -14,6 +15,8 @@ func NewProvider(cfg config.AIConfig, httpClient *http.Client, log *slog.Logger)
 	switch cfg.Provider {
 	case "litellm":
 		return litellm.New(cfg, httpClient, log)
+	case "ollama":
+		return ollama.New(cfg, httpClient, log)
 	case "openrouter":
 		return openrouter.New(cfg, httpClient, log)
 	default:

internal/ai/factory_test.go

@@ -0,0 +1,33 @@
+package ai
+
+import (
+	"io"
+	"log/slog"
+	"net/http"
+	"testing"
+
+	"git.warky.dev/wdevs/amcs/internal/config"
+)
+
+func TestNewProviderSupportsOllama(t *testing.T) {
+	provider, err := NewProvider(config.AIConfig{
+		Provider: "ollama",
+		Embeddings: config.AIEmbeddingConfig{
+			Model:      "nomic-embed-text",
+			Dimensions: 768,
+		},
+		Metadata: config.AIMetadataConfig{
+			Model: "llama3.2",
+		},
+		Ollama: config.OllamaConfig{
+			BaseURL: "http://localhost:11434/v1",
+			APIKey:  "ollama",
+		},
+	}, &http.Client{}, slog.New(slog.NewTextHandler(io.Discard, nil)))
+	if err != nil {
+		t.Fatalf("NewProvider() error = %v", err)
+	}
+	if provider.Name() != "ollama" {
+		t.Fatalf("provider name = %q, want ollama", provider.Name())
+	}
+}

internal/ai/ollama/client.go

@@ -0,0 +1,24 @@
+package ollama
+
+import (
+	"log/slog"
+	"net/http"
+
+	"git.warky.dev/wdevs/amcs/internal/ai/compat"
+	"git.warky.dev/wdevs/amcs/internal/config"
+)
+
+func New(cfg config.AIConfig, httpClient *http.Client, log *slog.Logger) (*compat.Client, error) {
+	return compat.New(compat.Config{
+		Name:           "ollama",
+		BaseURL:        cfg.Ollama.BaseURL,
+		APIKey:         cfg.Ollama.APIKey,
+		EmbeddingModel: cfg.Embeddings.Model,
+		MetadataModel:  cfg.Metadata.Model,
+		Temperature:    cfg.Metadata.Temperature,
+		Headers:        cfg.Ollama.RequestHeaders,
+		HTTPClient:     httpClient,
+		Log:            log,
+		Dimensions:     cfg.Embeddings.Dimensions,
+	}), nil
+}