build: introduce npm workspaces for unified dependency management

Consolidate frontend, typespec, and worker/php into a single npm
workspaces setup with one root lockfile. Update Dockerfiles to use
repository root as build context, and adjust justfile, CI workflow,
and compose files accordingly.

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

1 files changed, 9 insertions, 0 deletions

diff --git a/package.json b/package.json
new file mode 100644
index 0000000..70df083
--- /dev/null
+++ b/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "phperkaigi-2026-albatross",
+  "private": true,
+  "workspaces": [
+    "frontend",
+    "typespec",
+    "worker/php"
+  ]
+}