docs(pl-cli): document required --allow-build flag for pnpm dlx

.changeset/pl-cli-dlx-docs.md

@@ -0,0 +1,5 @@
+---
+---
+
+Docs-only: add README to `@platforma-sdk/pl-cli` documenting required
+`--allow-build=@milaboratories/pframes-rs-node` flag for `pnpm dlx`.

tools/pl-cli/README.md

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+# @platforma-sdk/pl-cli
+
+CLI for Platforma server state manipulation.
+
+## Usage
+
+```bash
+pnpm dlx --allow-build=@milaboratories/pframes-rs-node \
+  @platforma-sdk/pl-cli <command> [args...]
+```
+
+The `--allow-build=@milaboratories/pframes-rs-node` flag is **required**.
+Without it you will get:
+
+```
+ModuleLoadError: Cannot find module '.../pframes_rs_node.node'
+```
+
+## Commands
+
+- `admin copy-project` — copy a project between users (requires admin credentials)
+- `project list` — list projects for a user
+- `project info` — show project metadata
+- `project duplicate` — Create a copy of an existing project
+- `project rename` — Change the name of a project
+- `project delete` — Permanently remove a project
+
+Run `pl-cli <command> --help` for per-command flags.