Add Auto/Review mode toggle and non-interactive runner

- GUI: Auto/Review toggle on TaskDetail and ProjectView
  persisted per-project in localStorage
- Runner: noninteractive param (stdin=DEVNULL, 300s timeout)
  activated by KIN_NONINTERACTIVE=1 env or param
- CLI: --allow-write flag for kin run command
- API: POST /run accepts {allow_write: bool}, sets
  KIN_NONINTERACTIVE=1 and stdin=DEVNULL for subprocess
- Fixes pipeline hanging on interactive claude input (VDOL-002)

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

agents/runner.py

@@ -4,6 +4,7 @@ Each agent = separate process with isolated context.
 """
 
 import json
+import os
 import sqlite3
 import subprocess
 import time
@@ -24,6 +25,7 @@ def run_agent(
     brief_override: str | None = None,
     dry_run: bool = False,
     allow_write: bool = False,
+    noninteractive: bool = False,
 ) -> dict:
     """Run a single Claude Code agent as a subprocess.
 
@@ -64,7 +66,7 @@ def run_agent(
     # Run claude subprocess
     start = time.monotonic()
     result = _run_claude(prompt, model=model, working_dir=working_dir,
-                         allow_write=allow_write)
+                         allow_write=allow_write, noninteractive=noninteractive)
     duration = int(time.monotonic() - start)
 
     # Parse output — ensure output_text is always a string for DB storage
@@ -109,6 +111,7 @@ def _run_claude(
     model: str = "sonnet",
     working_dir: str | None = None,
     allow_write: bool = False,
+    noninteractive: bool = False,
 ) -> dict:
     """Execute claude CLI as subprocess. Returns dict with output, returncode, etc."""
     cmd = [
@@ -120,13 +123,17 @@ def _run_claude(
     if allow_write:
         cmd.append("--dangerously-skip-permissions")
 
+    is_noninteractive = noninteractive or os.environ.get("KIN_NONINTERACTIVE") == "1"
+    timeout = 300 if is_noninteractive else 600
+
     try:
         proc = subprocess.run(
             cmd,
             capture_output=True,
             text=True,
-            timeout=600,  # 10 min max
+            timeout=timeout,
             cwd=working_dir,
+            stdin=subprocess.DEVNULL if is_noninteractive else None,
         )
     except FileNotFoundError:
         return {
@@ -137,7 +144,7 @@ def _run_claude(
     except subprocess.TimeoutExpired:
         return {
             "output": "",
-            "error": "Agent timed out after 600s",
+            "error": f"Agent timed out after {timeout}s",
             "returncode": 124,
         }
 
@@ -213,6 +220,7 @@ def run_pipeline(
     steps: list[dict],
     dry_run: bool = False,
     allow_write: bool = False,
+    noninteractive: bool = False,
 ) -> dict:
     """Execute a multi-step pipeline of agents.
 
@@ -260,6 +268,7 @@ def run_pipeline(
             brief_override=brief,
             dry_run=dry_run,
             allow_write=allow_write,
+            noninteractive=noninteractive,
         )
         results.append(result)