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/Index.hs

@@ -0,0 +1,86 @@
+module Web.View.DeploymentRecords.Index where
+
+import Web.Types
+import Generated.Types
+import IHP.Prelude
+import IHP.ViewPrelude
+
+data IndexView = IndexView
+    { records     :: ![DeploymentRecord]
+    , decisions   :: ![DecisionRecord]
+    , signals     :: ![OutcomeSignal]
+    , evaluations :: ![ChangeEvaluation]
+    }
+
+instance View IndexView where
+    html IndexView { .. } = [hsx|
+        <div class="flex items-center justify-between mb-6">
+            <h1 class="text-2xl font-semibold">Deployments</h1>
+            <a href={NewDeploymentRecordAction}
+               class="text-sm bg-indigo-600 text-white px-4 py-2 rounded hover:bg-indigo-700">
+                New Deployment
+            </a>
+        </div>
+
+        {if null records
+            then [hsx|<p class="text-gray-500 text-sm">No deployment records yet.</p>|]
+            else renderTable records decisions signals evaluations}
+    |]
+
+renderTable :: [DeploymentRecord] -> [DecisionRecord] -> [OutcomeSignal] -> [ChangeEvaluation] -> Html
+renderTable records decisions signals evaluations = [hsx|
+    <div class="bg-white rounded-lg border border-gray-200 overflow-hidden">
+        <table class="w-full text-sm">
+            <thead class="bg-gray-50 border-b border-gray-200">
+                <tr>
+                    <th class="text-left px-4 py-3 font-semibold text-gray-600">Decision</th>
+                    <th class="text-left px-4 py-3 font-semibold text-gray-600">Version</th>
+                    <th class="text-left px-4 py-3 font-semibold text-gray-600">Deployed At</th>
+                    <th class="text-right px-4 py-3 font-semibold text-gray-600">Signals</th>
+                    <th class="text-right px-4 py-3 font-semibold text-gray-600">Evaluation</th>
+                </tr>
+            </thead>
+            <tbody>
+                {forEach records (renderRow decisions signals evaluations)}
+            </tbody>
+        </table>
+    </div>
+|]
+
+renderRow :: [DecisionRecord] -> [OutcomeSignal] -> [ChangeEvaluation] -> DeploymentRecord -> Html
+renderRow decisions signals evaluations record = [hsx|
+    <tr class="border-b border-gray-100 hover:bg-gray-50 last:border-0">
+        <td class="px-4 py-3">
+            <a href={ShowDeploymentRecordAction { deploymentRecordId = record.id }}
+               class="text-indigo-600 hover:text-indigo-800">{decisionTitle}</a>
+        </td>
+        <td class="px-4 py-3 font-mono text-gray-700">{record.versionRef}</td>
+        <td class="px-4 py-3 text-gray-500">{show record.deployedAt}</td>
+        <td class="px-4 py-3 text-right text-gray-600">{show signalCount}</td>
+        <td class="px-4 py-3 text-right">
+            {maybe [hsx|<span class="text-gray-400">—</span>|] renderScoreBadge mScore}
+        </td>
+    </tr>
+|]
+  where
+    decisionTitle = maybe "(unknown)" (.title) $
+        find (\d -> d.id == record.decisionId) decisions
+    signalCount = length $ filter (\s -> s.deploymentId == record.id) signals
+    mScore :: Maybe Int16
+    mScore = fmap (.score) $ find (\e -> e.deploymentId == record.id) evaluations
+
+renderScoreBadge :: Int16 -> Html
+renderScoreBadge score = [hsx|
+    <span class={scoreClass score <> " text-xs px-2 py-0.5 rounded font-medium"}>
+        {starsFor score}
+    </span>
+|]
+
+starsFor :: Int16 -> Text
+starsFor n = pack (Prelude.replicate (fromIntegral n) '★') <> pack (Prelude.replicate (5 - fromIntegral n) '☆')
+
+scoreClass :: Int16 -> Text
+scoreClass n
+    | n <= 2    = "bg-red-100 text-red-800"
+    | n == 3    = "bg-yellow-100 text-yellow-800"
+    | otherwise = "bg-green-100 text-green-800"