feat(P4): IHF Phase 4 complete — Outcome Observation and Antifragility Loop

Closes the IHF improvement loop. Full antifragility chain now traversable:
Widget → Annotation → Candidate → Requirement → Decision → Deployment → OutcomeSignal

New artifacts:
- DeploymentRecord (immutable, links DecisionRecord to a deployed version)
- OutcomeSignal (append-only; DB trigger prevents UPDATE/DELETE)
- ChangeEvaluation (one-per-deployment; UNIQUE constraint; 1–5 score)

New capabilities:
- DeploymentRecordsController (index, show, new, create)
- RecordOutcomeSignalAction — capture improved/regressed/neutral/inconclusive signals
- Pre/post comparison panel on deployment show (±30-day event/annotation counts)
- Regression detection — improved signal followed by high/critical annotation
- ChangeEvaluation — idempotent score+rationale per deployment
- Recurrence tracking — cycle count per widget, leaderboard
- AntifragilityDashboardAction (autoRefresh, 5 panels) per hub
- Phase 4 integration tests (T01–T08 logic coverage)
- docs/phase4-summary.md; SCOPE.md updated to Phase 4 complete

State Hub: workstream 07e9c860 → completed

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

Web/View/DeploymentRecords/New.hs

@@ -0,0 +1,99 @@
+module Web.View.DeploymentRecords.New where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+
+data NewView = NewView
+    { record      :: !DeploymentRecord
+    , decisions   :: ![DecisionRecord]
+    , implRefs    :: ![ImplementationChangeReference]
+    , users       :: ![User]
+    , mDecisionId :: !(Maybe (Id DecisionRecord))
+    }
+
+instance View NewView where
+    html NewView { .. } = [hsx|
+        <div class="mb-6 flex items-center gap-2 text-sm text-gray-500">
+            <a href={DeploymentRecordsAction} class="hover:text-gray-700">Deployments</a>
+            <span>/</span>
+            <span>New</span>
+        </div>
+
+        <div class="max-w-xl">
+            <h1 class="text-2xl font-semibold mb-6">Record Deployment</h1>
+
+            <form method="POST" action={CreateDeploymentRecordAction}
+                  class="bg-white rounded-lg border border-gray-200 px-6 py-5 space-y-4">
+                {hiddenField "authenticity_token"}
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 mb-1">
+                        Decision <span class="text-red-500">*</span>
+                    </label>
+                    <select name="decisionId"
+                            class="w-full text-sm border border-gray-300 rounded px-3 py-2">
+                        {forEach decisions (renderDecisionOption mDecisionId)}
+                    </select>
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 mb-1">
+                        Implementation Reference <span class="text-gray-400">(optional)</span>
+                    </label>
+                    <select name="implRefId"
+                            class="w-full text-sm border border-gray-300 rounded px-3 py-2">
+                        <option value="">— none —</option>
+                        {forEach implRefs renderImplRefOption}
+                    </select>
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 mb-1">
+                        Version Reference <span class="text-red-500">*</span>
+                    </label>
+                    <input type="text" name="versionRef"
+                           value={record.versionRef}
+                           placeholder="e.g. v1.2.3, git:abc1234, deploy/2026-03-29"
+                           class="w-full text-sm border border-gray-300 rounded px-3 py-2" />
+                    {validationErrorsFor record #versionRef}
+                </div>
+
+                <div>
+                    <label class="block text-sm font-medium text-gray-700 mb-1">
+                        Notes <span class="text-gray-400">(optional)</span>
+                    </label>
+                    <textarea name="notes" rows="3"
+                              class="w-full text-sm border border-gray-300 rounded px-3 py-2">{fromMaybe "" record.notes}</textarea>
+                </div>
+
+                <div class="flex gap-3 pt-2">
+                    <button type="submit"
+                            class="text-sm bg-indigo-600 text-white px-4 py-2 rounded hover:bg-indigo-700">
+                        Record Deployment
+                    </button>
+                    <a href={DeploymentRecordsAction}
+                       class="text-sm border border-gray-300 px-4 py-2 rounded hover:bg-gray-50">
+                        Cancel
+                    </a>
+                </div>
+            </form>
+        </div>
+    |]
+
+renderDecisionOption :: Maybe (Id DecisionRecord) -> DecisionRecord -> Html
+renderDecisionOption mSelected d = [hsx|
+    <option value={show d.id} selected={isSelected}>
+        {d.title} ({d.outcome})
+    </option>
+|]
+  where
+    isSelected = case mSelected of
+        Just sid -> sid == d.id
+        Nothing  -> False
+
+renderImplRefOption :: ImplementationChangeReference -> Html
+renderImplRefOption ref = [hsx|
+    <option value={show ref.id}>{ref.workItemRef} ({ref.system})</option>
+|]