Add professional-proofread skill

skills/professional-proofreader/SKILL.md

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+---
+name: professional-proofreader
+description: >
+    Use when a user asks to "proofread", "review and correct", "fix grammar", "improve readability while keeping my voice", and to proofread a document file and save an updated version.
+risk: safe
+source: original
+date_added: "2026-03-04"
+---
+
+# Professional Proofreader
+
+## Overview
+
+This skill transforms flawed writing — whether pasted text or uploaded documents — into publication-ready prose without altering the author’s intent.
+It eliminates grammatical, spelling, punctuation, clarity, and tone issues while strictly preserving the author’s voice and intent.
+Returns a corrected version plus a structured modification log, or generates an updated file when requested. Not for code editing or technical refactoring.
+
+---
+
+## When to Use
+
+- Use when user asks to "proofread", "review and correct", "fix grammar", "polish this text", "improve readability while keeping my voice".
+- Use when user asks to proofread a document file (like .docx, .pdf, .txt) and save the updated version as new file with 'UPDATED_' prefix.
+
+---
+
+# WORKFLOW MODES
+
+This skill operates in two modes:
+1. Inline Text Mode
+2. File Processing Mode
+
+### MODE 1: Inline Text
+
+Refer [markdown](references/inline-text-mode.md) for complete inline text mode.
+
+### MODE 2: File Processing
+
+Trigger when user says:
+
+- "Proofread [filename].[extension]
+- "Edit this document"
+- "Correct grammar in this file"
+- "Save updated version"
+- "Add prefix UPDATED_"
+- "Return corrected .[extension]"
+
+Refer [markdown](references/file-processing-mode.md) for complete file processing mode.
+
+---
+
+## Best Practices
+
+### ✅ **Do:** [Good practice]
+- Always include modification explanations.
+- Always keep quality standards equivalent to: Academic proofreading, business document refinement, pre-publication review.
+- Always follow below editing standards:
+
+#### Grammar
+- Subject-verb agreement  
+- Tense consistency 
+- Article usage 
+- Prepositions
+- Pronoun clarity 
+
+#### Spelling
+- Correct typos 
+- Maintain original spelling variant (US/UK)
+
+#### Punctuation
+- Commas 
+- Apostrophes 
+- Quotation marks 
+- Sentence boundaries 
+
+#### Style & Tone
+- Maintain author voice 
+- Avoid unnecessary formalization 
+- Preserve rhetorical choices 
+
+#### Readability
+- Improve structure 
+- Enhance logical flow 
+- Remove redundancy 
+
+### ❌ **Don't:** [What to avoid] 
+- Never alter meaning.
+- Never drop formatting intentionally.
+- Never change file name logic beyond request.
+- Never expand the content
+
+---
+
+# Output Rules
+
+If inline:
+-> Return Corrected Version + Modifications list.
+
+If file rewrite:
+-> Save updated file.
+-> Confirm filename.
+-> Provide modifications list unless suppressed.
+
+Give friendly message to user in the end.
+
+---

skills/professional-proofreader/references/file-processing-mode.md

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+### File Processing Workflow
+
+### 1. Identify File Type
+Supported:
+- .docx
+- .txt
+- .pdf (text-based)
+
+If unsupported -> inform user clearly.
+
+---
+
+### 2. Extract Text
+Read file contents completely before editing.
+
+---
+
+### 3. Apply Standard Proofreading Workflow
+Follow:
+- Error detection
+- Voice preservation
+- Minimal corrections
+- Validation pass
+
+---
+
+### 4. Regenerate File
+
+If user requests saving:
+
+- Preserve original formatting where possible.
+- Save corrected document.
+- Apply requested prefix or naming rule.
+
+Example:
+Input: `weekly_meal_plan.docx`  
+Output: `UPDATED_weekly_meal_plan.docx`
+
+---
+
+### 5. Return Both:
+
+- Confirmation of saved file
+- Modification log (unless user explicitly requests file-only output)

skills/professional-proofreader/references/inline-text-mode.md

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+# MODE 1: Inline Text
+
+## Step 1 — Content Isolation
+
+Extract only the text intended for proofreading.
+
+If no text is provided, respond:
+
+> No text was provided for proofreading. Please paste the content you would like reviewed.
+
+---
+
+## Step 2 — Error Detection Pass
+
+Scan for:
+
+- Grammar violations  
+- Spelling mistakes  
+- Punctuation issues  
+- Sentence fragments  
+- Run-ons  
+- Tense inconsistencies  
+- Article/preposition misuse  
+- Pronoun ambiguity  
+- Redundancy  
+- Awkward phrasing  
+- Logical flow breaks  
+- Tone inconsistency  
+- Terminology inconsistency  
+
+---
+
+## Step 3 — Voice Preservation Check (CRITICAL)
+
+Before modifying any sentence, verify:
+
+- Is the tone intentional?
+- Is informality deliberate?
+- Is repetition rhetorical?
+- Is fragmentation stylistic?
+
+If grammatically valid and intentional → DO NOT CHANGE.
+
+Never:
+
+- Formalize casual writing without cause  
+- Dilute emotional intensity  
+- Replace distinctive vocabulary unnecessarily  
+- Remove expressive phrasing  
+
+---
+
+## Step 4 — Minimal Necessary Corrections
+
+Apply the smallest effective edit required.
+
+Do not:
+
+- Expand content  
+- Add new ideas  
+- Remove nuance  
+- Rewrite entire paragraphs unless structurally broken  
+
+Precision over preference.
+
+---
+
+## Step 5 — Clarity & Flow Optimization
+
+Where required:
+
+- Break long run-on sentences  
+- Merge fragmented thoughts  
+- Improve transitions  
+- Remove redundancy  
+
+Meaning must remain intact.
+
+---
+
+## Step 6 — Validation Pass
+
+Before finalizing:
+
+- Confirm zero remaining grammar errors  
+- Confirm tone remains consistent  
+- Confirm meaning is unchanged  
+- Confirm no stylistic identity was erased  
+- Confirm every edit is documented  
+
+If violation detected → refine before output.
+
+---