feat(skills): enhance agent skills with additional tags and commands

- Added language_tags, library_tags, framework_tags, and domain_tags to agent skills.
- Introduced new commands: get_skill and get_guardrail for fetching specific skills and guardrails.
- Updated database schema and migration scripts to accommodate new fields.
- Enhanced skill listing functionality to support filtering by new tags.
- Improved error handling and response structures for skill-related operations.

internal/generatedmodels/sql_public_agent_skills.go

@@ -13,7 +13,11 @@ type ModelPublicAgentSkills struct {
 	Content                          resolvespec_common.SqlString      `bun:"content,type:text,notnull," json:"content"`
 	CreatedAt                        resolvespec_common.SqlTimeStamp   `bun:"created_at,type:timestamptz,default:now(),notnull," json:"created_at"`
 	Description                      resolvespec_common.SqlString      `bun:"description,type:text,default:'',notnull," json:"description"`
+	DomainTags                       resolvespec_common.SqlStringArray `bun:"domain_tags,type:text[],default:'{}',notnull," json:"domain_tags"`
+	FrameworkTags                    resolvespec_common.SqlStringArray `bun:"framework_tags,type:text[],default:'{}',notnull," json:"framework_tags"`
 	GUID                             resolvespec_common.SqlUUID        `bun:"guid,type:uuid,default:gen_random_uuid(),notnull," json:"guid"`
+	LanguageTags                     resolvespec_common.SqlStringArray `bun:"language_tags,type:text[],default:'{}',notnull," json:"language_tags"`
+	LibraryTags                      resolvespec_common.SqlStringArray `bun:"library_tags,type:text[],default:'{}',notnull," json:"library_tags"`
 	Name                             resolvespec_common.SqlString      `bun:"name,type:text,notnull," json:"name"`
 	Tags                             resolvespec_common.SqlStringArray `bun:"tags,type:text[],default:'{}',notnull," json:"tags"`
 	UpdatedAt                        resolvespec_common.SqlTimeStamp   `bun:"updated_at,type:timestamptz,default:now(),notnull," json:"updated_at"`