feat: implement rollback command for deployments

- Added a new `rollback` command to roll back deployments to their previous release.
- Introduced `findRollbackCandidates` and `rollbackDeployment` functions to handle rollback logic.
- Updated CLI command definitions to include the new `rollback` command with an alias.
- Enhanced deployment conversion to use resolved images for buildable services.
- Introduced a new `graph` module to visualize Kubernetes resources and their relationships.
- Added tests for the new rollback functionality and graph rendering.
- Updated package version to 1.3.0.

tests/command/metadata.test.ts

@@ -7,6 +7,7 @@ import { logs } from "../../command/logs";
 import { initializeCompletion, main } from "../../command/main";
 import { ps } from "../../command/ps";
 import { restart } from "../../command/restart";
+import { rollback } from "../../command/rollback";
 import { s3 } from "../../command/s3";
 import { start } from "../../command/start";
 import { stop } from "../../command/stop";
@@ -25,11 +26,11 @@ describe("CLI command definitions", () => {
     ["start", "Start deployments without rebuilding images", start],
     ["stop", "Scale managed deployments to zero", stop],
     ["restart", "Roll out a restart for managed deployments", restart],
+    ["rollback", "Roll deployments back to the previous release", rollback],
     ["s3", "Inspect managed S3 storage", s3],
     ["down", "Delete managed resources except ingress and PVCs", down],
     ["ps", "List deployments", ps],
-    ["logs", "Show deployment logs", logs],
-    ["exec", "Execute a command inside a deployment pod", exec],
+    ["logs", "Show deployment logs", logs],    ["exec", "Execute a command inside a deployment pod", exec],
     ["export", "Write rendered manifests to a YAML file", exportCommand],
     ["db", "Inspect managed postgres databases", db],
   ] as const;
@@ -38,12 +39,16 @@ describe("CLI command definitions", () => {
     "defines %s command metadata",
     (name, description, command) => {
       const definition = command as Command;
-      expect(definition.meta).toEqual({ name, description });
+      expect(definition.meta).toMatchObject({ name, description });
       if (name !== "db" && name !== "s3")
         expect(typeof definition.run).toBe("function");
     },
   );
 
+  test("defines the rollback command alias", () => {
+    expect((rollback as Command).meta).toMatchObject({ alias: "fuck" });
+  });
+
   test("defines build, cleanup, listing, logging, and export flags", () => {
     expect((up as Command).args?.build).toMatchObject({
       type: "boolean",

tests/command/up.test.ts

@@ -51,7 +51,7 @@ describe("up task selection", () => {
         } as ComposeSpecification,
         process.cwd(),
       ),
-    ).toEqual({ built: [], changed: [] });
+    ).toEqual({ built: [], changed: [], images: {} });
   });
 
   test("restarts only for changed or unknown image digests", () => {