feat: add TraitsTab component for managing agent traits

- Implemented TraitsTab.svelte to handle CRUD operations for agent traits.
- Integrated grid for displaying traits with context menu actions for add, edit, and delete.
- Added trait instruction editing functionality with a dedicated editor.
- Updated AdminShell to include PersonasPage for navigation.
- Enhanced AppSidebar with a new entry for Personas.
- Extended ShellPage type to include 'personas'.
- Defined new types for AgentPersona, AgentPart, and AgentTrait in types.ts.

internal/generatedmodels/sql_public_agent_persona_guardrails.go

@@ -1,34 +0,0 @@
-// Code generated by relspecgo. DO NOT EDIT.
-package generatedmodels
-
-import (
-	"github.com/uptrace/bun"
-)
-
-type ModelPublicAgentPersonaGuardrails struct {
-	bun.BaseModel  `bun:"table:public.agent_persona_guardrails,alias:agent_persona_guardrails"`
-	GuardrailID    int64                       `bun:"guardrail_id,type:bigint,notnull," json:"guardrail_id"`
-	PersonaID      int64                       `bun:"persona_id,type:bigint,notnull," json:"persona_id"`
-	RelGuardrailID *ModelPublicAgentGuardrails `bun:"rel:has-one,join:guardrail_id=id" json:"relguardrailid,omitempty"` // Has one ModelPublicAgentGuardrails
-	RelPersonaID   *ModelPublicAgentPersonas   `bun:"rel:has-one,join:persona_id=id" json:"relpersonaid,omitempty"`     // Has one ModelPublicAgentPersonas
-}
-
-// TableName returns the table name for ModelPublicAgentPersonaGuardrails
-func (m ModelPublicAgentPersonaGuardrails) TableName() string {
-	return "public.agent_persona_guardrails"
-}
-
-// TableNameOnly returns the table name without schema for ModelPublicAgentPersonaGuardrails
-func (m ModelPublicAgentPersonaGuardrails) TableNameOnly() string {
-	return "agent_persona_guardrails"
-}
-
-// SchemaName returns the schema name for ModelPublicAgentPersonaGuardrails
-func (m ModelPublicAgentPersonaGuardrails) SchemaName() string {
-	return "public"
-}
-
-// GetPrefix returns the table prefix
-func (m ModelPublicAgentPersonaGuardrails) GetPrefix() string {
-	return "APG"
-}