Update cli to match exactly what redis returns

[paoloredis]

Note

Low Risk
Display-only changes in static/js/cli.js with no auth or server logic touched.

Overview
Aligns the embedded redis.io web CLI output with native redis-cli formatting.

Reply rendering now threads a per-reply status flag from the API: simple strings / status replies (e.g. PONG, OK) print unquoted; bulk strings use a new reprString() that escapes UTF-8 bytes like redis-cli’s sdscatrepr (\xHH for non-printable bytes, named escapes for \n, quotes, etc.). Backend-wrapped large integers ({$int: "..."}) render as (integer) … instead of being mishandled as objects.

Minor: restores the trailing newline at end of cli.js.

^{Reviewed by Cursor Bugbot for commit ecc12f8. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

DOC-6710

[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

---

^{Security scan by Jit}

[paoloredis]

This pr makes it so the cli replies match exactly what redis returns. For instance PING now returns PONG (without quotes).

@andy-stark-redis @dwdougherty you can test the changes on https://staging.learn.redis.com/docs/latest/develop/ , I sent you creds in a dm

[andy-stark-redis]

Approved.

[dwdougherty]

I tested PING, ARGET/ARGETRANGE, HSET/HGETALL, and INFO. The PING, array, and hash commands look good, but INFO isn't quite right. INFO returns a large bulk string and correctly ends each line with a line feed, but in the CLI, the output is one long line.

Output from redis-cli:

127.0.0.1:6379> INFO
# Server
redis_version:8.8.0
redis_git_sha1:00000000
redis_git_dirty:1
redis_build_id:5ab495a1e5f6aa3e
redis_mode:standalone
os:Linux 6.12.76-linuxkit aarch64
arch_bits:64
monotonic_clock:ARM CNTVCT @ 24 ticks/us
multiplexing_api:epoll
atomicvar_api:c11-builtin
gcc_version:14.2.0
process_id:1
process_supervised:no
run_id:932c8173f482ab51551a49964a26a61d05a04ab2
...

Output from the CLI widget is one long line:

redis> INFO
"# Server\r\nredis_version:8.8.0\r\nredis_git_sha1:00000000\r\nredis_git_dirty:1\r\n..."

[dwdougherty]

LGTM. Thank you, @paoloredis!