docs: complete La Tanda testnet validator guide — closes #373

[zeroknowledge0x]

Closes #373

Summary

Adds a comprehensive La Tanda Testnet Validator Guide (chain/la-tanda-testnet-validator-guide.md) covering the full validator lifecycle — from server provisioning through validator creation, state sync, systemd service management, monitoring, and ongoing maintenance.

What's Included

All 18 sections specified in the issue, plus 4 appendices:

Sections (1–18)

1. Server requirements — hardware minimums, cloud provider recommendations, port table
2. Ubuntu preparation — system updates, packages, UFW firewall, SSH hardening, swap, system limits
3. Go installation — Go 1.24.1 setup with PATH configuration
4. Latanda binary installation — quick install script + manual build from source
5. Chain initialization — latandad init with explanation of every created file
6. Genesis download — with SHA-256 hash verification (mismatch warning)
7. Peer configuration — persistent peers, seeds, gas price, config.toml/app.toml tuning
8. Systemd service creation — complete unit file with parameter explanations
9. Starting and managing the node — systemctl commands, log viewing, sync verification
10. State sync configuration — trusted block fetching, config application, data reset, disable after sync
11. Wallet creation — create, list, show, recover, balance check, key backup
12. Faucet/verification process — Discord faucet, platform KYC, team contact, balance verification
13. Validator creation — full create-validator command with parameter table explanation
14. Validator management commands — edit, delegate, unbond, withdraw, redelegate, unjail, delegations, rewards, send
15. Monitoring and health checks — quick checks, signing status, health check script with cron, disk monitoring
16. Common troubleshooting — 7 scenarios: won't start, 0 peers, jailed, stuck block, genesis mismatch, out of disk, insufficient funds, out of gas
17. Security recommendations — SSH, fail2ban, key permissions, backup strategy table, sentry node architecture diagram
18. Useful maintenance commands — categorized quick-reference cheatsheet

Appendices

• A. Quick Start — Complete zero-to-validator in one code block
• B. State Sync Quick Setup — Copy-paste state sync for existing nodes
• C. Network Information — All URLs, endpoints, hashes, contacts in one table
• D. CLI Command Quick Reference — ASCII cheatsheet card

Key Differentiators from Existing Guides

Feature	Existing chain/ guides	This guide
Process manager	PM2 (requires Node.js)	Systemd (native Linux)
Sync method	Full sync from genesis only	State sync (minutes vs hours)
Monitoring	Basic jq checks	Health check script + cron + signing info
Audience	Node operators / beginners	Validator operators specifically
Troubleshooting	3 basic scenarios	7 scenarios with solutions
Security	Brief checklist	SSH hardening + key management + sentry architecture
CLI reference	Scattered commands	Categorized cheatsheet + ASCII card

File Added

• chain/la-tanda-testnet-validator-guide.md — 1,400 lines, complete validator lifecycle documentation

Reward

Comprehensive scope — 75 LTD as specified in the issue.
Payment wallet (EVM): 0x036E525f4569865DA76A0ef758304b309740aeef

[github-actions]

PR Gatekeeper

• Bounty issue [DOCS] Complete La Tanda Testnet Validator Guide (Systemd + State Sync + Validator Setup) #373 is not assigned to you. Comment on the issue with your proposal and wait for assignment. See CONTRIBUTING.md.

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