docs: add Spanish README

[webbrain-one]

Adds README.es-ES.md alongside the original documentation.

Summary by CodeRabbit

• Documentation
  • Added comprehensive Spanish-language documentation for PolyYield.
  • Included setup instructions, Devnet configuration, environment variables, project structure, and smart contract operation summaries.
  • Added links to relevant Solana, Solscan, faucet, and Phantom resources.

[vercel]

@webbrain-one is attempting to deploy a commit to the 1aryalaayush-gmailcom's projects Team on Vercel.

A member of the Team first needs to authorize it.

[coderabbitai]

📝 Walkthrough

Walkthrough

Se añade README.es-ES.md con documentación en español sobre PolyYield, su configuración local y en Devnet, las variables de entorno, la estructura del proyecto, las instrucciones del contrato inteligente y recursos externos.

Changes

Documentación del proyecto

Layer / File(s)	Summary
README en español README.es-ES.md	Documenta el producto PolyYield, el stack tecnológico, el inicio rápido, la configuración de Devnet, las variables de entorno, el ID del programa, la estructura del repositorio, las instrucciones del contrato y enlaces de recursos.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: adding a Spanish README for the project.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Fix failing CI checks

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

🧹 Nitpick comments (1)

README.es-ES.md (1)

69-69: 📐 Maintainability & Code Quality | 🔵 Trivial | ⚡ Quick win

Especifica el lenguaje del bloque de código.

Añade text al fence para corregir la advertencia MD040 de Markdownlint.

Propuesta

-```
+```text

🤖 Prompt for AI Agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@README.es-ES.md` at line 69, Añade el identificador de lenguaje text al fence
de código señalado en README.es-ES.md, cambiando el fence de apertura a ```text
para corregir MD040 y conservar intacto el contenido del bloque.

Source: Linters/SAST tools

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@README.es-ES.md`:
- Line 69: Añade el identificador de lenguaje text al fence de código señalado
en README.es-ES.md, cambiando el fence de apertura a ```text para corregir MD040
y conservar intacto el contenido del bloque.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4450252e-92ee-4fb2-8d59-525f3034db2d

📥 Commits

Reviewing files that changed from the base of the PR and between e22a1c0 and 8edd269.

📒 Files selected for processing (1)

• README.es-ES.md