release(cli): 1.0.0 version plan — first stable CLI release

Same feature scope as the desktop 1.0.0 release: GraphQL, WebSocket,
Wait, Sub-flow, flow runner overhaul, expression autocomplete + faker
namespace, AI agent.

Author: moosebay

.nx/version-plans/cli-1.0.0.md

@@ -0,0 +1,27 @@
+---
+cli: major
+---
+
+First stable release.
+
+### New protocols and flow nodes
+
+- **GraphQL requests**: query/variables, assertions, response history, YAML export/import.
+- **WebSocket**: connection and send flow nodes with message capture.
+- **Wait node**: pause flow execution for a configurable duration.
+- **Sub-flow**: Run Sub Flow node plus Sub-Flow Trigger and Sub-Flow Return for composing flows.
+
+### Flow engine
+
+- Flow runner overhaul with improved node execution and error propagation.
+- Flow-level error field and node ID mapping for more precise failure attribution.
+
+### Expression editor
+
+- Built-in `uuid()`, `uuid("v4")`, `uuid("v7")`, `ulid()`, `now()` helpers inside `{{ }}`.
+- Dot-chain on `now()`: `.Unix()`, `.UnixMilli()`, `.UnixMicro()`, `.UnixNano()`.
+- `faker.*` namespace (35 generators — `name()`, `email()`, `phoneNumber()`, `url()`, `ipv4()`, `word()`, `sentence()`, `paragraph()`, `date()`, `timestamp()`, `uuid()`, `randomInt(min, max)`, ...) for fake test data.
+
+### AI
+
+- AI agent with tool execution, streaming, and multi-provider support (OpenAI, Anthropic, Gemini), credential vault encryption, and variable introspection.