Add Creative Writing expansion pack (#414)

* Add Creative Writing expansion pack
- 10 specialized writing agents for fiction and narrative design
- 8 complete workflows (novel, screenplay, short story, series)
- 27 quality checklists for genre and technical validation
- 22 writing tasks covering full creative process
- 8 professional templates for structured writing
- KDP publishing integration support

* Fix bmad-creative-writing expansion pack formatting and structure

- Convert all agents to standard BMAD markdown format with embedded YAML
- Add missing core dependencies (create-doc, advanced-elicitation, execute-checklist)
- Add bmad-kb.md customized for creative writing context
- Fix agent dependency references to only include existing files
- Standardize agent command syntax and activation instructions
- Clean up agent dependencies for beta-reader, dialog-specialist, editor, genre-specialist, narrative-designer, and world-builder

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Co-authored-by: Brian <bmadcode@gmail.com>

expansion-packs/bmad-creative-writing/tasks/workshop-dialog.md

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+# Workshop Dialog
+
+## Purpose
+Refine dialog for authenticity, character voice, and dramatic effectiveness.
+
+## Process
+
+### 1. Voice Audit
+For each character, assess:
+- Vocabulary level and word choice
+- Sentence structure preferences
+- Speech rhythms and patterns
+- Catchphrases or verbal tics
+- Educational/cultural markers
+- Emotional expression style
+
+### 2. Subtext Analysis
+For each exchange:
+- What's being said directly
+- What's really being communicated
+- Power dynamics at play
+- Emotional undercurrents
+- Character objectives
+- Obstacles to directness
+
+### 3. Flow Enhancement
+- Remove unnecessary dialogue tags
+- Vary attribution methods
+- Add action beats
+- Incorporate silence/pauses
+- Balance dialog with narrative
+- Ensure natural interruptions
+### 4. Conflict Injection
+Where dialog lacks tension:
+- Add opposing goals
+- Insert misunderstandings
+- Create subtext conflicts
+- Use indirect responses
+- Build through escalation
+- Add environmental pressure
+
+### 5. Polish Pass
+- Read aloud for rhythm
+- Check period authenticity
+- Verify character consistency
+- Eliminate on-the-nose dialog
+- Strengthen opening/closing lines
+- Add distinctive character markers
+
+## Output
+Refined dialog with stronger voices and dramatic impact