feat: stream Claude CLI JSONL output

docs/gateway/cli-backends.md

@@ -13,7 +13,7 @@ OpenClaw can run **local AI CLIs** as a **text-only fallback** when API provider
 rate-limited, or temporarily misbehaving. This is intentionally conservative:
 
 - **Tools are disabled** (no tool calls).
-- **Text in → text out** (reliable).
+- **Text in → text out** (reliable, with Claude CLI partial text streaming when enabled).
 - **Sessions are supported** (so follow-up turns stay coherent).
 - **Images can be passed through** if the CLI accepts image paths.
 
@@ -185,8 +185,9 @@ load local files from plain paths (Claude Code CLI behavior).
 ## Inputs / outputs
 
 - `output: "json"` (default) tries to parse JSON and extract text + session id.
-- `output: "jsonl"` parses JSONL streams (Codex CLI `--json`) and extracts the
-  last agent message plus `thread_id` when present.
+- `output: "jsonl"` parses JSONL streams (for example Claude CLI `stream-json`
+  and Codex CLI `--json`) and extracts the final agent message plus session
+  identifiers when present.
 - `output: "text"` treats stdout as the final response.
 
 Input modes:
@@ -200,8 +201,10 @@ Input modes:
 The bundled Anthropic plugin registers a default for `claude-cli`:
 
 - `command: "claude"`
-- `args: ["-p", "--output-format", "json", "--permission-mode", "bypassPermissions"]`
-- `resumeArgs: ["-p", "--output-format", "json", "--permission-mode", "bypassPermissions", "--resume", "{sessionId}"]`
+- `args: ["-p", "--output-format", "stream-json", "--include-partial-messages", "--verbose", "--permission-mode", "bypassPermissions"]`
+- `resumeArgs: ["-p", "--output-format", "stream-json", "--include-partial-messages", "--verbose", "--permission-mode", "bypassPermissions", "--resume", "{sessionId}"]`
+- `output: "jsonl"`
+- `input: "stdin"`
 - `modelArg: "--model"`
 - `systemPromptArg: "--append-system-prompt"`
 - `sessionArg: "--session-id"`
@@ -244,7 +247,8 @@ CLI backend defaults are now part of the plugin surface:
 
 - **No OpenClaw tools** (the CLI backend never receives tool calls). Some CLIs
   may still run their own agent tooling.
-- **No streaming** (CLI output is collected then returned).
+- **Streaming is backend-specific**. Claude CLI forwards partial text from
+  `stream-json`; other CLI backends may still be buffered until exit.
 - **Structured outputs** depend on the CLI’s JSON format.
 - **Codex CLI sessions** resume via text output (no JSONL), which is less
   structured than the initial `--json` run. OpenClaw sessions still work