Refactor subagent and workflow domain models; migrate access tiers and events to domain module

- Moved `AccessTier` and `SubagentEvent` enums to `zesdex_domain::subagent`.
- Consolidated workflow-related types into `zesdex_domain::workflow`.
- Updated references across the codebase to use the new domain models.
- Refactored tool execution logic to utilize a new `ToolExecutor` trait.
- Enhanced `AgentTurnService` to handle tool calls and events more effectively.
- Adjusted API handlers and state management to align with new domain structure.

apps/infrastructure/src/workflow/docs.rs

@@ -5,7 +5,7 @@ use std::path::{Path, PathBuf};
 use anyhow::Result;
 use tracing::{info, instrument};
 
-use crate::workflow::hive_mind::types::NodeOutput;
+use zesdex_domain::workflow::NodeOutput;
 
 /// Write a deterministic audit trail for a hive-mind convergence.
 ///

apps/infrastructure/src/workflow/engine/execution.rs

@@ -6,7 +6,7 @@ use tracing::{info, instrument};
 use crate::llm::provider::LlmClient;
 use crate::tools::ToolCtx;
 use crate::workflow::engine::primitives::execute_primitive;
-use crate::workflow::script::WorkflowScript;
+use zesdex_domain::workflow::WorkflowScript;
 
 /// Execute each phase of a workflow script sequentially.
 ///

apps/infrastructure/src/workflow/hive_mind/cycle.rs

@@ -15,7 +15,7 @@ use crate::subagent::context::SubagentContext;
 use crate::subagent::division::AccessTier;
 use crate::subagent::engine::run_agent;
 use crate::tools::ToolCtx;
-use crate::workflow::hive_mind::types::{CognitiveCycle, NodeOutput};
+use zesdex_domain::workflow::{CognitiveCycle, NodeOutput};
 
 /// Execute one cycle: run each node directive and collect outputs.
 ///
@@ -56,7 +56,7 @@ pub async fn execute_cycle(
 
     let cycle_index = cycle.index;
 
-    use crate::workflow::hive_mind::types::NodeDirective;
+    use zesdex_domain::workflow::NodeDirective;
 
     // Run all directives in this cycle concurrently.
     let handles: Vec<_> = cycle

apps/infrastructure/src/workflow/hive_mind/synthesis.rs

@@ -4,7 +4,7 @@ use anyhow::Result;
 use tracing::info;
 
 use crate::tools::ToolCtx;
-use crate::workflow::hive_mind::types::NodeOutput;
+use zesdex_domain::workflow::NodeOutput;
 
 /// Synthesize a consensus from all node outputs.
 ///

apps/infrastructure/src/workflow/hive_mind/types.rs

@@ -1,31 +1,3 @@
 //! Hive-mind shared types — node directives, cycle plans, and node outputs.
 
-/// A directive for a single processing node in the hive mind.
-#[derive(Debug, Clone)]
-pub struct NodeDirective {
-    pub directive: String,
-    pub access_tier: String,
-}
-
-/// A cognitive cycle plan — ordered list of cycles, each containing
-/// parallel node directives.
-#[derive(Debug, Clone)]
-pub struct CognitiveCyclePlan {
-    pub cycles: Vec<Vec<NodeDirective>>,
-}
-
-/// A single cycle in a cognitive cycle plan — parallel node directives
-/// executed together.
-#[derive(Debug, Clone)]
-pub struct CognitiveCycle {
-    pub index: u32,
-    pub directives: Vec<NodeDirective>,
-}
-
-/// Output from a single hive-mind processing node after a cycle completes.
-#[derive(Debug, Clone)]
-pub struct NodeOutput {
-    pub id: String,
-    pub directive: String,
-    pub output: String,
-}
+// Types have been moved to zesdex_domain::workflow

apps/infrastructure/src/workflow/script.rs

@@ -3,24 +3,11 @@
 use anyhow::Result;
 use tracing::{info, instrument};
 
-/// A single phase in a parsed workflow script.
-#[derive(Debug, Clone)]
-pub struct WorkflowPhase {
-    pub name: String,
-    pub directive: String,
-}
+use zesdex_domain::workflow::{WorkflowPhase, WorkflowScript};
 
-/// A parsed workflow script with named phases.
-#[derive(Debug, Clone)]
-pub struct WorkflowScript {
-    pub name: String,
-    pub phases: Vec<WorkflowPhase>,
-}
-
-impl WorkflowScript {
-    /// Parse a YAML string into a WorkflowScript.
-    ///
-    /// Expected format:
+/// Parse a YAML string into a WorkflowScript.
+///
+/// Expected format:
     /// ```yaml
     /// name: my-workflow
     /// phases:
@@ -30,7 +17,7 @@ impl WorkflowScript {
     ///     directive: "Implement the changes..."
     /// ```
     #[instrument]
-    pub fn parse(yaml: &str) -> Result<Self> {
+    pub fn parse_workflow_script(yaml: &str) -> Result<WorkflowScript> {
         let parsed: serde_json::Value = serde_yaml_ng::from_str(yaml)
             .map_err(|e| anyhow::anyhow!("Failed to parse workflow YAML: {e}"))?;
 
@@ -62,5 +49,4 @@ impl WorkflowScript {
 
         info!("Parsed workflow script: {name} ({} phases)", phases.len());
         Ok(WorkflowScript { name, phases })
-    }
 }