fix(deploy): Checkpoints — preserve STOPPED history, fix filter + placement

- Backend: rename deleteTerminalByAppAndEnvironment → deleteFailedByAppAndEnvironment.
  STOPPED rows were being wiped on every redeploy, so Checkpoints was always empty.
  Now only FAILED rows are pruned; STOPPED deployments are retained as restorable
  checkpoints (they still carry deployed_config_snapshot from their RUNNING window).
- UI filter: any deployment with a snapshot is a checkpoint (was RUNNING|DEGRADED only,
  which excluded the main case — the previous blue/green deployment now in STOPPED).
- UI placement: Checkpoints disclosure now renders inside IdentitySection, matching
  the design spec.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.claude/rules/core-classes.md

@@ -32,7 +32,7 @@ paths:
 - `DeploymentStatus` — enum: STOPPED, STARTING, RUNNING, DEGRADED, STOPPING, FAILED. `DEGRADED` is reserved for post-deploy drift (a replica died after RUNNING); `DeploymentExecutor` now marks partial-healthy deploys FAILED, not DEGRADED.
 - `DeployStage` — enum: PRE_FLIGHT, PULL_IMAGE, CREATE_NETWORK, START_REPLICAS, HEALTH_CHECK, SWAP_TRAFFIC, COMPLETE
 - `DeploymentStrategy` — enum: BLUE_GREEN, ROLLING. Stored on `ResolvedContainerConfig.deploymentStrategy` as kebab-case string (`"blue-green"` / `"rolling"`). `fromWire(String)` is the only conversion entry point; unknown/null inputs fall back to BLUE_GREEN so the executor dispatch site never null-checks or throws.
-- `DeploymentService` — createDeployment (deletes terminal deployments first), markRunning, markFailed, markStopped
+- `DeploymentService` — createDeployment (calls `deleteFailedByAppAndEnvironment` first so FAILED rows don't pile up; STOPPED rows are preserved as restorable checkpoints), markRunning, markFailed, markStopped
 - `RuntimeType` — enum: AUTO, SPRING_BOOT, QUARKUS, PLAIN_JAVA, NATIVE
 - `RuntimeDetector` — probes JAR files at upload time: detects runtime from manifest Main-Class (Spring Boot loader, Quarkus entry point, plain Java) or native binary (non-ZIP magic bytes)
 - `ContainerRequest` — record: 20 fields for Docker container creation (includes runtimeType, customArgs, mainClass)

.claude/rules/docker-orchestration.md

@@ -49,7 +49,7 @@ Traffic routing is implicit: Traefik labels (`cameleer.app`, `cameleer.environme
 
 **Deploy stages** (`DeployStage`): PRE_FLIGHT -> PULL_IMAGE -> CREATE_NETWORK -> START_REPLICAS -> HEALTH_CHECK -> SWAP_TRAFFIC -> COMPLETE (or FAILED at any stage). Rolling reuses the same stage labels inside the per-replica loop; the UI progress bar shows the most recent stage.
 
-**Deployment uniqueness**: `DeploymentService.createDeployment()` deletes any STOPPED/FAILED deployments for the same app+environment before creating a new one, preventing duplicate rows.
+**Deployment retention**: `DeploymentService.createDeployment()` deletes FAILED deployments for the same app+environment before creating a new one, preventing failed-attempt buildup. STOPPED deployments are preserved as restorable checkpoints — the UI Checkpoints disclosure lists every deployment with a non-null `deployed_config_snapshot` (RUNNING, DEGRADED, STOPPED) minus the current one.
 
 ## JAR Management
 

AGENTS.md

@@ -1,7 +1,7 @@
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **cameleer-server** (9095 symbols, 23495 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **cameleer-server** (9318 symbols, 23997 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 

CLAUDE.md

@@ -85,7 +85,7 @@ When adding, removing, or renaming classes, controllers, endpoints, UI component
 <!-- gitnexus:start -->
 # GitNexus — Code Intelligence
 
-This project is indexed by GitNexus as **cameleer-server** (9095 symbols, 23495 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
+This project is indexed by GitNexus as **cameleer-server** (9318 symbols, 23997 relationships, 300 execution flows). Use the GitNexus MCP tools to understand code, assess impact, and navigate safely.
 
 > If any GitNexus tool warns the index is stale, run `npx gitnexus analyze` in terminal first.
 

cameleer-server-app/src/main/java/com/cameleer/server/app/storage/PostgresDeploymentRepository.java

@@ -126,8 +126,8 @@ public class PostgresDeploymentRepository implements DeploymentRepository {
     }
 
     @Override
-    public void deleteTerminalByAppAndEnvironment(UUID appId, UUID environmentId) {
-        jdbc.update("DELETE FROM deployments WHERE app_id = ? AND environment_id = ? AND status IN ('STOPPED', 'FAILED')",
+    public void deleteFailedByAppAndEnvironment(UUID appId, UUID environmentId) {
+        jdbc.update("DELETE FROM deployments WHERE app_id = ? AND environment_id = ? AND status = 'FAILED'",
                 appId, environmentId);
     }
 

cameleer-server-app/src/test/java/com/cameleer/server/app/storage/PostgresDeploymentRepositoryIT.java

@@ -87,6 +87,27 @@ class PostgresDeploymentRepositoryIT extends AbstractPostgresIT {
         assertThat(loaded.deployedConfigSnapshot()).isNull();
     }
 
+    @Test
+    void deleteFailedByAppAndEnvironment_keepsStoppedAndActive() {
+        // given: one STOPPED (checkpoint), one FAILED, one RUNNING
+        UUID stoppedId = repository.create(appId, appVersionId, envId, "stopped");
+        repository.updateStatus(stoppedId, com.cameleer.server.core.runtime.DeploymentStatus.STOPPED, null, null);
+
+        UUID failedId = repository.create(appId, appVersionId, envId, "failed");
+        repository.updateStatus(failedId, com.cameleer.server.core.runtime.DeploymentStatus.FAILED, null, "boom");
+
+        UUID runningId = repository.create(appId, appVersionId, envId, "running");
+        repository.updateStatus(runningId, com.cameleer.server.core.runtime.DeploymentStatus.RUNNING, "c1", null);
+
+        // when
+        repository.deleteFailedByAppAndEnvironment(appId, envId);
+
+        // then: STOPPED and RUNNING survive; FAILED is gone
+        assertThat(repository.findById(stoppedId)).isPresent();
+        assertThat(repository.findById(runningId)).isPresent();
+        assertThat(repository.findById(failedId)).isEmpty();
+    }
+
     @Test
     void deployedConfigSnapshot_canBeClearedToNull() {
         UUID jarVersionId = UUID.randomUUID();

cameleer-server-core/src/main/java/com/cameleer/server/core/runtime/DeploymentRepository.java

@@ -14,5 +14,6 @@ public interface DeploymentRepository {
     void updateStatus(UUID id, DeploymentStatus status, String containerId, String errorMessage);
     void markDeployed(UUID id);
     void markStopped(UUID id);
-    void deleteTerminalByAppAndEnvironment(UUID appId, UUID environmentId);
+    /** Delete FAILED deployments for this (app, env). STOPPED deployments are preserved as checkpoints. */
+    void deleteFailedByAppAndEnvironment(UUID appId, UUID environmentId);
 }

cameleer-server-core/src/main/java/com/cameleer/server/core/runtime/DeploymentService.java

@@ -28,7 +28,7 @@ public class DeploymentService {
         Environment env = envService.getById(environmentId);
         String containerName = env.slug() + "-" + app.slug();
 
-        deployRepo.deleteTerminalByAppAndEnvironment(appId, environmentId);
+        deployRepo.deleteFailedByAppAndEnvironment(appId, environmentId);
         UUID deploymentId = deployRepo.create(appId, appVersionId, environmentId, containerName);
         return deployRepo.findById(deploymentId).orElseThrow();
     }

ui/src/pages/AppsTab/AppDeploymentPage/Checkpoints.tsx

@@ -15,15 +15,11 @@ export function Checkpoints({ deployments, versions, currentDeploymentId, onRest
   const [open, setOpen] = useState(false);
   const versionMap = new Map(versions.map((v) => [v.id, v]));
 
-  // Deployments that reached COMPLETE stage and captured a snapshot (RUNNING or DEGRADED).
-  // Exclude the currently-running one.
+  // Any deployment that captured a snapshot is restorable — that covers RUNNING,
+  // DEGRADED, and STOPPED (blue/green swap previous, user-stopped). Exclude the
+  // currently-running one and anything without a snapshot (FAILED, STARTING).
   const checkpoints = deployments
-    .filter(
-      (d) =>
-        d.deployedAt &&
-        (d.status === 'RUNNING' || d.status === 'DEGRADED') &&
-        d.id !== currentDeploymentId,
-    )
+    .filter((d) => d.deployedConfigSnapshot && d.id !== currentDeploymentId)
     .sort((a, b) => (b.deployedAt ?? '').localeCompare(a.deployedAt ?? ''));
 
   return (

ui/src/pages/AppsTab/AppDeploymentPage/IdentitySection.tsx

@@ -1,4 +1,4 @@
-import { useRef } from 'react';
+import { useRef, type ReactNode } from 'react';
 import { SectionHeader, Input, MonoText, Button } from '@cameleer/design-system';
 import type { App, AppVersion } from '../../../api/queries/admin/apps';
 import type { Environment } from '../../../api/queries/admin/environments';
@@ -25,11 +25,12 @@ interface IdentitySectionProps {
   stagedJar: File | null;
   onStagedJarChange: (file: File | null) => void;
   deploying: boolean;
+  children?: ReactNode;
 }
 
 export function IdentitySection({
   mode, environment, app, currentVersion,
-  name, onNameChange, stagedJar, onStagedJarChange, deploying,
+  name, onNameChange, stagedJar, onStagedJarChange, deploying, children,
 }: IdentitySectionProps) {
   const fileInputRef = useRef<HTMLInputElement>(null);
   const slug = app?.slug ?? slugify(name);
@@ -109,6 +110,7 @@ export function IdentitySection({
           )}
         </div>
       </div>
+      {children}
     </div>
   );
 }

ui/src/pages/AppsTab/AppDeploymentPage/index.tsx

@@ -467,7 +467,7 @@ export default function AppDeploymentPage() {
         </div>
       </div>
 
-      {/* ── Identity & Artifact ── */}
+      {/* ── Identity & Artifact (with Checkpoints for deployed apps) ── */}
       <IdentitySection
         mode={mode}
         environment={env}
@@ -478,9 +478,7 @@ export default function AppDeploymentPage() {
         stagedJar={stagedJar}
         onStagedJarChange={setStagedJar}
         deploying={deploymentInProgress}
-      />
-
-      {/* ── Checkpoints (deployed apps only) ── */}
+      >
         {app && (
           <Checkpoints
             deployments={deployments}
@@ -489,6 +487,7 @@ export default function AppDeploymentPage() {
             onRestore={handleRestore}
           />
         )}
+      </IdentitySection>
 
       {/* ── Config tabs ── */}
       <div className={styles.tabGroup}>