Add /ping and /uptime bot health-check commands

[Kingvic300]

Summary

Add /ping and /uptime Telegram commands mirroring the health information already exposed over HTTP at /healthz, so the team can check the bot's liveness from inside the chat instead of curling the deployed URL.

Background

src/index.ts already exposes app.get("/healthz", (_req, res) => res.status(200).send("ok")). There is no equivalent inside Telegram — src/telegram/client.ts only registers a new_chat_members handler. This is the cheapest possible extension of existing, already-verified functionality.

Proposed Solution

Add bot.command("ping", ...) returning a simple "pong" plus response latency, and bot.command("uptime", ...) returning process uptime since last start (process.uptime()), reusing the existing sendMessage helper.

Technical Scope

• src/telegram/client.ts — two new bot.command(...) handlers
• No new dependencies, no new config
• Tests: command handler output format

Acceptance Criteria

• /ping responds with a liveness confirmation and round-trip latency
• /uptime responds with process uptime in a human-readable format
• Both work in the group and in DM
• Unit tests added
• /help (once issue Add release published notifications #4 lands) lists both commands
• CI passes
• Code follows project conventions

Edge Cases

• Bot restarted moments before the command runs — uptime should read as near-zero, not error
• Command issued by a non-member in a group the bot isn't actually in (not applicable here, but worth a sanity check that command handlers don't assume group membership)

Risks

• None of significance — purely additive, no external dependencies, mirrors already-tested logic

Deliverables

• Feature implementation
• Unit tests

Labels

enhancement, backend, good first issue

Priority

Medium — trivial to build, directly useful once the bot has more moving parts (scheduler, commands) to worry about.

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Estimated Completion: 96 hours

Telegram: https://t.me/txioCommunity

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[theseven7h]

I have read the description and have a solid understanding of what's needed. Expect a PR in 24hours

[grantfox-oss]

🦊 GrantFox — @theseven7h has been assigned to this issue as part of the Third Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #39)
2. Your PR will be reviewed by the Txio-labs maintainers

Good luck! Track your progress on GrantFox.

[Kingvic300]

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