add typo rules and configuration

Author: jaffrepaul

_typos.toml

@@ -0,0 +1,73 @@
+[default]
+# Regex patterns to ignore
+extend-ignore-re = [
+  "\\bUE\\b",     # Unreal Engine abbreviation
+  "\\bUE_LOG\\b", # Unreal Engine logging macro
+  "\\bue4\\b",    # Unreal Engine 4
+  "\\bue5\\b",    # Unreal Engine 5
+  "\\bue\\d+\\b", # Any UE version (ue5, ue6, etc.)
+]
+
+[files]
+# Files and patterns to exclude from spell checking
+extend-exclude = [
+  # Design and binary files
+  "*.excalidraw", # Diagram files contain random IDs
+  "*.png",
+  "*.jpg",
+  "*.jpeg",
+  "*.gif",
+  "*.svg",
+  "*.webp",
+
+  # Data and configuration files
+  "*.json",            # JSON files have many false positives
+  "*.lock",            # Package lock files
+  "yarn.lock",         # Yarn lock file
+  "package-lock.json", # NPM lock file
+
+  # Documentation assets
+  "public/_platforms/*.json", # Platform metadata
+  "public/pdfs/*.pdf",        # PDFs can't be edited programmatically
+
+  # Build artifacts and dependencies
+  ".next/**",        # Next.js build output
+  "node_modules/**", # Dependencies
+  "dist/**",         # Distribution builds
+  "build/**",        # Build output
+]
+
+[default.extend-words]
+# Technical terms and product names that are spelled correctly
+# .NET ecosystem
+Paket = "Paket" # .NET package manager (legitimate tool)
+paket = "paket" # .NET package manager CLI command
+
+# Platform-specific terms
+ITMS = "ITMS" # Apple error code prefix (legitimate)
+SEH = "SEH"   # Structured Exception Handling (Windows API)
+EDE = "EDE"   # Cipher name component (3DES_EDE_CBC_SHA)
+UE = "UE"     # Unreal Engine abbreviation
+UE4 = "UE4"   # Unreal Engine 4
+UE5 = "UE5"   # Unreal Engine 5
+
+# Cloud/Infrastructure
+nodejs_als = "nodejs_als" # Cloudflare compatibility flag (correct spelling)
+als = "als"               # Part of nodejs_als flag
+
+# Common abbreviations in tech docs
+DSN = "DSN"   # Data Source Name (Sentry)
+DSNs = "DSNs" # Plural
+SDK = "SDK"   # Software Development Kit
+SDKs = "SDKs" # Plural
+API = "API"   # Application Programming Interface
+APIs = "APIs" # Plural
+MCP = "MCP"   # Model Context Protocol
+NPM = "NPM"   # Node Package Manager
+
+# Code identifiers that are intentionally "misspelled" or match external systems
+# Note: These should ONLY include cases where the spelling is intentional
+# (e.g., matching an external API/constant name we don't control)
+childs = "childs"                       # Intentional variable name in mdx-deflist.ts
+aso = "aso"                             # Intentional variable name in utils.ts (short for "a sidebar order")
+MIGRATED_GETTING_STARTD_DOCS = "MIGRATED_GETTING_STARTD_DOCS" # Matches actual constant in Sentry backend (external) https://github.com/getsentry/sentry/blob/c2d4d527dcf640b616c73921a1294834720c76bd/src/sentry/models/project.py#L54