Update vale.ini with linter configurations

Configured Vale linter settings and project-specific vocabulary.

Author: asong56

vale.ini

@@ -1 +1,48 @@
+; Vale prose linter — https://vale.sh
+; Applies to all Markdown and plain-text documentation.
 
+StylesPath = .vale/styles
+MinAlertLevel = suggestion
+
+[formats]
+; Treat .mdx as Markdown
+mdx = md
+
+[*.{md,mdx,txt}]
+BasedOnStyles = Vale, write-good
+
+; ── Vale built-in rules ────────────────────────────────────────────
+Vale.Avoid          = YES   ; flag commonly misused words
+Vale.Repetition     = YES   ; flag immediately repeated words
+Vale.Spelling       = NO    ; disable — too many false positives on code terms
+Vale.Terms          = YES   ; enforce consistent terminology (see below)
+
+; ── write-good rules ───────────────────────────────────────────────
+write-good.Cliches         = YES
+write-good.E-Prime         = NO    ; "to be" is fine in technical docs
+write-good.Illusions       = YES   ; flag word illusions (the the)
+write-good.Passive         = suggestion
+write-good.TooWordy        = suggestion
+write-good.Weasel          = suggestion
+
+; ── Project-specific terminology ────────────────────────────────────
+; Add preferred spellings and capitalisations here.
+; Format: incorrect = correct
+[vocab.default]
+accept = [
+  GitHub,
+  JavaScript,
+  TypeScript,
+  Markdown,
+  README,
+  API,
+  PR,
+  CLI,
+  UI,
+  CSS,
+  HTML,
+  JSON,
+  YAML,
+  ESLint,
+  Prettier
+]