Remove Vale configuration from dev branch

Vale linting rules and configuration have been moved to the dedicated
vale-rules branch for better separation of concerns.

All Vale-related files now properly organized in vale-rules branch.

.vale/config.ini

@@ -1,6 +0,0 @@
-StylesPath = styles
-MinAlertLevel = suggestion
-
-[*.{md,qmd}]
-#BasedOnStyles = textbook, write-good, proselint
-BasedOnStyles = textbook, write-good

.vale/styles/textbook/Capitalization.yml

@@ -1,6 +0,0 @@
-extends: capitalization
-message: "Use sentence case in section headings."
-level: suggestion
-scope: heading
-match: $sentence
-

.vale/styles/textbook/Dashes.yml

@@ -1,16 +0,0 @@
-extends: substitution
-message: "Avoid em dashes (—) in formal writing; use commas or rephrase."
-level: warning
-ignorecase: false
-scope: raw
-nonword: true
-swap:
-  # Match an em dash between words/clauses, suggest using commas
-  '\b[^—\n]+—[^—\n]+\b': ', ... ,'
-
-  # Optional: also match spaced em dash style (— on both sides)
-  # '\s+—\s+': ', '
-
-  # Optional: flag improper use of hyphen instead of dash (uncomment to activate)
-  # '\s+-\s+': '— (em dash) or comma'
-

.vale/styles/textbook/Punctuation.yml

@@ -1,7 +0,0 @@
-extends: substitution
-message: "Use the Oxford comma in lists for clarity."
-level: suggestion
-ignorecase: true
-swap:
-  # Common pattern: list of three items without Oxford comma
-  '(\b\w+\b), (\b\w+\b) and (\b\w+\b)': '\1, \2, and \3'

.vale/styles/textbook/Terminology.yml

@@ -1,9 +0,0 @@
-extends: substitution
-message: "Use '{{suggestion}}' instead of '{{match}}' for consistency."
-level: warning
-ignorecase: true
-swap:
-  latency: execution time
-  learning phase: training
-  hardware usage: resource utilization
-  neural network: machine learning system

.vale/styles/textbook/Vocabulary.yml

@@ -1,30 +0,0 @@
-extends: substitution
-message: "Consider using '%s' instead of '%s'."
-level: warning
-ignorecase: true
-swap:
-  "delve": "analyze"
-  "underscore": "highlight"
-  "holistic": "comprehensive"
-  "pivotal": "important"
-  "paradigm": "approach"
-  "shed light on": "explain"
-  "facilitate": "enable"
-  "foster": "support"
-  "leverage": "use"
-  "robust": "reliable"
-  "cutting-edge": "advanced"
-  "state-of-the-art": "modern"
-  "a myriad of": "many"
-  "endeavor": "effort"
-  "embark on": "begin"
-  "ameliorate": "improve"
-  "nuanced": "detailed"
-  "unprecedented": "new"
-  "empower": "enable"
-  "synergy": "cooperation"
-  "navigate": "address"
-  "drive change": "improve"
-  "at the forefront of": "leading"
-  "harness": "use"
-  "unlock": "enable"