feat(P3): IHF Phase 3 complete — Governance and Decision Linkage

Implements the full governance layer:
- Schema: requirements, decision_records, policy_references,
  implementation_change_references; requirement_candidates gets
  requirement_id back-reference
- RequirementsController (index/show; promotion-only create)
- DecisionRecordsController (CRUD + policy/impl ref management)
- GovernanceDashboardAction on HubsController (AutoRefresh)
- PromoteToRequirementAction + LinkToDecisionAction on candidates
- Outcome immutability enforced at controller level (fill excludes outcome)
- Full six-outcome vocabulary with Tailwind color roles
- Integration tests for all Phase 3 paths
- FrontController: registers Phase 2 missing controllers + all Phase 3
- SCOPE.md + docs/phase3-summary.md updated

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Web/View/DecisionRecords/Edit.hs

@@ -0,0 +1,34 @@
+module Web.View.DecisionRecords.Edit where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+import Web.View.DecisionRecords.New (renderForm)
+
+data EditView = EditView
+    { record       :: !DecisionRecord
+    , requirements :: ![Requirement]
+    , candidates   :: ![RequirementCandidate]
+    , users        :: ![User]
+    }
+
+instance View EditView where
+    html EditView { .. } = [hsx|
+        <div class="mb-6 flex items-center gap-2 text-sm text-gray-500">
+            <a href={DecisionRecordsAction} class="hover:text-gray-700">Decisions</a>
+            <span>/</span>
+            <a href={ShowDecisionRecordAction { decisionRecordId = record.id }}
+               class="hover:text-gray-700">{record.title}</a>
+            <span>/</span>
+            <span>Edit</span>
+        </div>
+
+        <div class="max-w-2xl">
+            <h1 class="text-2xl font-semibold mb-2">Edit Decision Record</h1>
+            <p class="text-sm text-amber-600 mb-6">
+                Note: outcome is immutable and cannot be changed here.
+            </p>
+            {renderForm record requirements candidates users (UpdateDecisionRecordAction { decisionRecordId = record.id })}
+        </div>
+    |]