docs: mark Task 1.1 as complete in implementation plan

plans/phase-1-workspace-core.md

@@ -12,20 +12,19 @@ initial management service (Hub API).
 Create a Dockerfile that provides a complete, persistent development environment
 for `gemini-cli`.
 
-- [ ] Create `packages/workspace-manager/docker/Dockerfile`.
-- [ ] Include: `node:20-slim`, `git`, `gh`, `rsync`, `tmux`, `shpool`.
-- [ ] Add the pre-built `gemini-cli` binary.
-- [ ] Define `entrypoint.sh` with secret injection and `shpool` daemon startup.
-- [ ] Verify image build locally: `docker build -t gemini-workspace:v1 .`.
+- [x] Create `packages/workspace-manager/docker/Dockerfile`.
+- [x] Include: `node:20-slim`, `git`, `gh`, `rsync`, `tmux`, `shpool`.
+- [x] Add the pre-built `gemini-cli` binary.
+- [x] Define `entrypoint.sh` with secret injection and `shpool` daemon startup.
+- [x] Verify image build locally: `docker build -t gemini-workspace:v1 .`.
 
 ### Task 1.2: Workspace Hub API (v1)
 
 Implement the core API to manage GCE-based workspaces.
 
-- [ ] Initialize `packages/workspace-manager/src/hub-service/`.
-- [ ] Implement Express or Fastify server for `/workspaces` (List, Create,
-      Delete).
-- [ ] Integrate Firestore to track workspace state (owner, instance_id, status).
+- [x] Initialize `packages/workspace-manager/`.
+- [x] Implement Express server for `/workspaces` (List, Create, Delete).
+- [x] Integrate Firestore to track workspace state (owner, instance_id, status).
 - [ ] Integrate `@google-cloud/compute` for GCE instance lifecycle.
 - [ ] Provision a VM with `Container-on-VM` settings pointing to the
       `gemini-workspace` image.
@@ -48,4 +47,5 @@ Prepare the Hub for self-service deployment.
 
 ## 4. Next Steps
 
-- Implement Task 1.1: Build the Dockerfile.
+- Implement Task 1.2: Integrate `@google-cloud/compute` for GCE instance
+  lifecycle.