initial commit

.devcontainer/devcontainer.json

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+{
+	"name": "dev stack",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+
+	// Every repo lands as a sibling inside /workspaces, which is ordinary
+	// container filesystem, and /workspaces itself is the workspace root.
+	// Nesting the other repos *inside* this one's bind mount instead would
+	// make the Docker daemon create those mount points as root through the
+	// bind, leaving root-owned empty directories behind on the host.
+	//
+	// With /workspaces as the workspace root, one Claude Code session started
+	// there reaches every repo as an ordinary subdirectory, with no --add-dir
+	// and no additionalDirectories permission entry.
+	"workspaceMount": "source=${localWorkspaceFolder},target=/workspaces/${localWorkspaceFolderBasename},type=bind",
+	"workspaceFolder": "/workspaces",
+
+	// One entry per repo, matching the directories listed in stack.conf.
+	"mounts": [
+		"source=${localWorkspaceFolder}/../my-backend,target=/workspaces/my-backend,type=bind",
+		"source=${localWorkspaceFolder}/../my-frontend,target=/workspaces/my-frontend,type=bind"
+	],
+
+	// Host networking, so the servers see each other and the host browser as
+	// plain localhost, with no forwardPorts list to keep in sync.
+	"runArgs": ["--network=host"],
+
+	// Environment for the servers: where each one keeps its dev state, which
+	// address it listens on, where it finds the other half of the stack.
+	// ${containerWorkspaceFolder} is /workspaces.
+	"containerEnv": {
+		// "MYAPP_DB_PATH": "${containerWorkspaceFolder}/my-backend/.dev/app.db",
+		// "MYAPP_LISTEN_ADDR": "0.0.0.0:4747"
+	},
+
+	"postCreateCommand": "${localWorkspaceFolderBasename}/.devcontainer/post-create.sh",
+
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				// One list for the whole stack, so both toolchains are here.
+			]
+		}
+	},
+
+	"features": {
+		"ghcr.io/devcontainers/features/docker-in-docker:4": {}
+	}
+}