feat: Add linked scene/chapter templates with planning-draft file references

- Updated Plot scene template with YAML frontmatter for metadata tracking
- Updated First Draft scene template with YAML frontmatter
- Added _template.md files in both Plot and First Draft folders
- Added create_scene.py script for automatic file creation and linking
- Planning files reference draft files via 'draft_file' field
- Draft files reference planning files via 'planning_template' field
- Word count targets tracked in planning, current count in draft
- Added comprehensive scripts/README.md with usage guide
- Supports --from-planning and --from-draft for creating missing counterparts

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

templates/snowflake/{{ cookiecutter.project_name }}/06-First Draft/Act 1/scene01.md

@@ -0,0 +1,91 @@
+---
+id: draft_scene_01
+title: "Chapter One: The Beginning"
+slug: chapter-one-the-beginning
+planning_template: "../../05-Plot/act_1/scene_01.md"
+act: 1
+chapter: 1
+scene: 1
+type: draft
+status: not_started
+word_count: 0
+word_count_updated: ""
+session_word_count: 0
+last_session: ""
+total_sessions: 0
+pov: ""
+version: 1
+created: ""
+updated: ""
+---
+
+# Chapter One: The Beginning
+
+**Draft File** | **ID:** draft_scene_01 | **Status:** {{ status | replace('_', ' ') | capitalizes }}
+
+---
+
+## Planning Reference
+
+> **Linked to:** [Planning Template]({{ planning_template }})
+
+---
+
+## Scene Metadata
+
+| Attribute | Value |
+|-----------|-------|
+| **Act** | {{ act }} |
+| **Chapter** | {{ chapter }} |
+| **Scene** | {{ scene }} |
+| **Type** | {{ type | capitalizes }} |
+| **POV** | {{ pov if pov else "Not set" }} |
+| **Version** | {{ version }} |
+
+---
+
+## Word Count Tracking
+
+| Metric | Value |
+|--------|-------|
+| **Target** | 2000 (from planning) |
+| **Current** | {{ word_count }} |
+| **This Session** | {{ session_word_count }} |
+| **Last Updated** | {{ word_count_updated if word_count_updated else "Never" }} |
+
+---
+
+## Draft Content
+
+### Rough Draft:
+
+[Write your scene content here...]
+
+---
+
+## Writing Notes
+
+### Session Log
+| Date | Words Added | Notes |
+|------|--------------|-------|
+| {{ last_session if last_session else "" }} | {{ session_word_count }} |  |
+
+### Revision Notes
+- 
+- 
+
+---
+
+## Status Checklist
+
+- [ ] First draft complete
+- [ ] Word count target met
+- [ ] POV consistent
+- [ ] Character voices distinct
+- [ ] Setting details accurate
+- [ ] Conflict resolved/advanced
+- [ ] Ready for revision
+
+---
+
+**Planning Template:** [Open Planning]({{ planning_template }}) | **Created:** {{ created }} | **Updated:** {{ updated }}