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/config/config.go

@@ -0,0 +1,119 @@
+package config
+
+import "time"
+
+const (
+	DefaultConfigPath = "./configs/dev.yaml"
+	DefaultSource     = "mcp"
+)
+
+type Config struct {
+	Server        ServerConfig        `yaml:"server"`
+	MCP           MCPConfig           `yaml:"mcp"`
+	Auth          AuthConfig          `yaml:"auth"`
+	Database      DatabaseConfig      `yaml:"database"`
+	AI            AIConfig            `yaml:"ai"`
+	Capture       CaptureConfig       `yaml:"capture"`
+	Search        SearchConfig        `yaml:"search"`
+	Logging       LoggingConfig       `yaml:"logging"`
+	Observability ObservabilityConfig `yaml:"observability"`
+}
+
+type ServerConfig struct {
+	Host           string        `yaml:"host"`
+	Port           int           `yaml:"port"`
+	ReadTimeout    time.Duration `yaml:"read_timeout"`
+	WriteTimeout   time.Duration `yaml:"write_timeout"`
+	IdleTimeout    time.Duration `yaml:"idle_timeout"`
+	AllowedOrigins []string      `yaml:"allowed_origins"`
+}
+
+type MCPConfig struct {
+	Path       string `yaml:"path"`
+	ServerName string `yaml:"server_name"`
+	Version    string `yaml:"version"`
+	Transport  string `yaml:"transport"`
+}
+
+type AuthConfig struct {
+	Mode            string   `yaml:"mode"`
+	HeaderName      string   `yaml:"header_name"`
+	QueryParam      string   `yaml:"query_param"`
+	AllowQueryParam bool     `yaml:"allow_query_param"`
+	Keys            []APIKey `yaml:"keys"`
+}
+
+type APIKey struct {
+	ID          string `yaml:"id"`
+	Value       string `yaml:"value"`
+	Description string `yaml:"description"`
+}
+
+type DatabaseConfig struct {
+	URL             string        `yaml:"url"`
+	MaxConns        int32         `yaml:"max_conns"`
+	MinConns        int32         `yaml:"min_conns"`
+	MaxConnLifetime time.Duration `yaml:"max_conn_lifetime"`
+	MaxConnIdleTime time.Duration `yaml:"max_conn_idle_time"`
+}
+
+type AIConfig struct {
+	Provider   string             `yaml:"provider"`
+	Embeddings AIEmbeddingConfig  `yaml:"embeddings"`
+	Metadata   AIMetadataConfig   `yaml:"metadata"`
+	LiteLLM    LiteLLMConfig      `yaml:"litellm"`
+	OpenRouter OpenRouterAIConfig `yaml:"openrouter"`
+}
+
+type AIEmbeddingConfig struct {
+	Model      string `yaml:"model"`
+	Dimensions int    `yaml:"dimensions"`
+}
+
+type AIMetadataConfig struct {
+	Model       string  `yaml:"model"`
+	Temperature float64 `yaml:"temperature"`
+}
+
+type LiteLLMConfig struct {
+	BaseURL         string            `yaml:"base_url"`
+	APIKey          string            `yaml:"api_key"`
+	UseResponsesAPI bool              `yaml:"use_responses_api"`
+	RequestHeaders  map[string]string `yaml:"request_headers"`
+	EmbeddingModel  string            `yaml:"embedding_model"`
+	MetadataModel   string            `yaml:"metadata_model"`
+}
+
+type OpenRouterAIConfig struct {
+	BaseURL      string            `yaml:"base_url"`
+	APIKey       string            `yaml:"api_key"`
+	AppName      string            `yaml:"app_name"`
+	SiteURL      string            `yaml:"site_url"`
+	ExtraHeaders map[string]string `yaml:"extra_headers"`
+}
+
+type CaptureConfig struct {
+	Source           string                 `yaml:"source"`
+	MetadataDefaults CaptureMetadataDefault `yaml:"metadata_defaults"`
+}
+
+type CaptureMetadataDefault struct {
+	Type          string `yaml:"type"`
+	TopicFallback string `yaml:"topic_fallback"`
+}
+
+type SearchConfig struct {
+	DefaultLimit     int     `yaml:"default_limit"`
+	DefaultThreshold float64 `yaml:"default_threshold"`
+	MaxLimit         int     `yaml:"max_limit"`
+}
+
+type LoggingConfig struct {
+	Level  string `yaml:"level"`
+	Format string `yaml:"format"`
+}
+
+type ObservabilityConfig struct {
+	MetricsEnabled bool `yaml:"metrics_enabled"`
+	PprofEnabled   bool `yaml:"pprof_enabled"`
+}