feat(tools): implement CRUD operations for thoughts and projects

* Add tools for creating, retrieving, updating, and deleting thoughts.
* Implement project management tools for creating and listing projects.
* Introduce linking functionality between thoughts.
* Add search and recall capabilities for thoughts based on semantic queries.
* Implement statistics and summarization tools for thought analysis.
* Create database migrations for thoughts, projects, and links.
* Add helper functions for UUID parsing and project resolution.

internal/ai/openrouter/client.go

@@ -0,0 +1,35 @@
+package openrouter
+
+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) {
+	headers := make(map[string]string, len(cfg.OpenRouter.ExtraHeaders)+2)
+	for key, value := range cfg.OpenRouter.ExtraHeaders {
+		headers[key] = value
+	}
+	if cfg.OpenRouter.SiteURL != "" {
+		headers["HTTP-Referer"] = cfg.OpenRouter.SiteURL
+	}
+	if cfg.OpenRouter.AppName != "" {
+		headers["X-Title"] = cfg.OpenRouter.AppName
+	}
+
+	return compat.New(compat.Config{
+		Name:           "openrouter",
+		BaseURL:        cfg.OpenRouter.BaseURL,
+		APIKey:         cfg.OpenRouter.APIKey,
+		EmbeddingModel: cfg.Embeddings.Model,
+		MetadataModel:  cfg.Metadata.Model,
+		Temperature:    cfg.Metadata.Temperature,
+		Headers:        headers,
+		HTTPClient:     httpClient,
+		Log:            log,
+		Dimensions:     cfg.Embeddings.Dimensions,
+	}), nil
+}