refactor: extract workflow crate

crates/workflow/src/lib.rs

@@ -0,0 +1,22 @@
+//! Workflow records, loading, Agent Skill ingestion, and human-edit linting.
+
+mod error;
+mod linter;
+mod schema;
+mod scope;
+mod skill;
+mod slug;
+mod workflow;
+
+pub use error::WorkflowLintError;
+pub use linter::{WorkflowLintReport, WorkflowLinter};
+pub use schema::{WorkflowFrontmatter, split_frontmatter};
+pub use scope::deny_write_rules;
+pub use skill::{
+    SKILL_FILENAME, SkillParseError, SkillRecord, load_skills_from_dir, parse_skill_md,
+};
+pub use slug::{Slug, is_valid_slug};
+pub use workflow::{
+    ResidentWorkflowEntry, ShadowedSkill, WORKFLOW_DESCRIPTION_HARD_CAP, WorkflowLoadError,
+    WorkflowRecord, WorkflowRegistry, WorkflowSource, load_workflows,
+};