docs: expand es and pt-BR docs trees

docs/es/experiments/plans/group-policy-hardening.md

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+---
+summary: "Telegram allowlist hardening: prefix + whitespace normalization"
+read_when:
+  - Reviewing historical Telegram allowlist changes
+title: "Telegram Allowlist Hardening"
+---
+
+# Telegram Allowlist Hardening
+
+**Date**: 2026-01-05  
+**Status**: Complete  
+**PR**: #216
+
+## Summary
+
+Telegram allowlists now accept `telegram:` and `tg:` prefixes case-insensitively, and tolerate
+accidental whitespace. This aligns inbound allowlist checks with outbound send normalization.
+
+## What changed
+
+- Prefixes `telegram:` and `tg:` are treated the same (case-insensitive).
+- Allowlist entries are trimmed; empty entries are ignored.
+
+## Examples
+
+All of these are accepted for the same ID:
+
+- `telegram:123456`
+- `TG:123456`
+- `tg:123456`
+
+## Why it matters
+
+Copy/paste from logs or chat IDs often includes prefixes and whitespace. Normalizing avoids
+false negatives when deciding whether to respond in DMs or groups.
+
+## Related docs
+
+- [Group Chats](/concepts/groups)
+- [Telegram Provider](/channels/telegram)