fix: remove redundant code in processing logic

schema/plans.dbml

@@ -0,0 +1,92 @@
+Table plans {
+  id uuid [pk, default: `gen_random_uuid()`]
+  title text [not null]
+  description text [not null, default: '']
+  status text [not null, default: 'draft']       // draft, active, blocked, completed, cancelled, superseded
+  priority text [not null, default: 'medium']    // low, medium, high, critical
+  project_id uuid [ref: > projects.guid]
+  owner text
+  due_date timestamptz
+  completed_at timestamptz
+  reviewed_by text
+  last_reviewed_at timestamptz
+  supersedes_plan_id uuid [ref: > plans.id]
+  tags "text[]" [not null, default: `'{}'`]
+  created_at timestamptz [not null, default: `now()`]
+  updated_at timestamptz [not null, default: `now()`]
+
+  indexes {
+    project_id
+    status
+    priority
+    owner
+    due_date
+    last_reviewed_at
+    tags [type: gin]
+    title [type: gin]
+  }
+}
+
+// Directional: plan_id cannot proceed until depends_on_plan_id is complete
+Table plan_dependencies {
+  id serial [pk]
+  plan_id uuid [not null, ref: > plans.id]
+  depends_on_plan_id uuid [not null, ref: > plans.id]
+  created_at timestamptz [not null, default: `now()`]
+
+  indexes {
+    (plan_id, depends_on_plan_id) [unique]
+    plan_id
+    depends_on_plan_id
+  }
+}
+
+// Bidirectional: store with plan_a_id < plan_b_id to avoid duplicates
+Table plan_related_plans {
+  id serial [pk]
+  plan_a_id uuid [not null, ref: > plans.id]
+  plan_b_id uuid [not null, ref: > plans.id]
+  created_at timestamptz [not null, default: `now()`]
+
+  indexes {
+    (plan_a_id, plan_b_id) [unique]
+    plan_a_id
+    plan_b_id
+  }
+}
+
+Table plan_skills {
+  id serial [pk]
+  plan_id uuid [not null, ref: > plans.id]
+  skill_id uuid [not null, ref: > agent_skills.id]
+  created_at timestamptz [not null, default: `now()`]
+
+  indexes {
+    (plan_id, skill_id) [unique]
+    plan_id
+  }
+}
+
+Table plan_guardrails {
+  id serial [pk]
+  plan_id uuid [not null, ref: > plans.id]
+  guardrail_id uuid [not null, ref: > agent_guardrails.id]
+  created_at timestamptz [not null, default: `now()`]
+
+  indexes {
+    (plan_id, guardrail_id) [unique]
+    plan_id
+  }
+}
+
+// Cross-file refs (for relspecgo merge)
+Ref: plans.project_id > projects.guid [delete: set null]
+Ref: plans.supersedes_plan_id > plans.id [delete: set null]
+Ref: plan_dependencies.plan_id > plans.id [delete: cascade]
+Ref: plan_dependencies.depends_on_plan_id > plans.id [delete: cascade]
+Ref: plan_related_plans.plan_a_id > plans.id [delete: cascade]
+Ref: plan_related_plans.plan_b_id > plans.id [delete: cascade]
+Ref: plan_skills.plan_id > plans.id [delete: cascade]
+Ref: plan_skills.skill_id > agent_skills.id [delete: cascade]
+Ref: plan_guardrails.plan_id > plans.id [delete: cascade]
+Ref: plan_guardrails.guardrail_id > agent_guardrails.id [delete: cascade]