feat(lanes): widen stage auto-detection, fix terminal UTF-8 decode

Add detect rules for plan/review/gate/tests/intake nodes (Agent subagent
matches, TaskCreate, broader test-runner regex) so more of the pipeline
lights up without an explicit ccam stage call, and fix a review/gate
detect overlap where senior-gate-reviewer also matched the generic
reviewer pattern. Also fix TerminalView's TextDecoder dropping the
`stream: true` flag, which corrupted multi-byte UTF-8 chars split across
WebSocket frames.

client/src/components/run/TerminalView.tsx

@@ -76,7 +76,13 @@ export function TerminalView({ runId, wsBaseUrl }: TerminalViewProps) {
       };
       sock.onmessage = (event) => {
         const isArrayBuffer = Object.prototype.toString.call(event.data) === "[object ArrayBuffer]";
-        const data = isArrayBuffer ? decoder.decode(event.data as ArrayBuffer) : event.data;
+        // `stream: true` carries a UTF-8 multi-byte char's trailing bytes over
+        // to the next decode() call when a PTY chunk splits mid-character —
+        // without it, a Vietnamese/accented char split across two WS frames
+        // decodes to garbage on both sides (U+FFFD or stray bytes).
+        const data = isArrayBuffer
+          ? decoder.decode(event.data as ArrayBuffer, { stream: true })
+          : event.data;
         if (typeof data === "string") {
           // A JSON control frame is the only thing that starts with `{"type"`.
           if (data.startsWith('{"type"')) {