Incremental Markdown Editing with Version Control

**Goal:** Enable targeted AI edits to markdown files without overwriting manual changes, with version tracking.

**Core Features:**

- **Section-Specific AI Editing:** Use markers (e.g., `#section-id`) in markdown to let AI rewrite only specified parts (e.g., "Revise the 'Methods' section").

- **Version Control:** Auto-save snapshots after each edit (AI or manual), with diffs and rollback for any section.

- **Efficiency:** Only regenerate targeted sections, preserving unchanged content.

**Benefits:**

- Faster iterations by editing fragments, not entire documents.

- Audit changes with version history; revert/merge selectively.

- Maintain formatting and manual edits alongside AI updates.

**Example:**

1. Create a markdown file with `#abstract` and `#conclusion` sections.

2. Use an AI prompt to rewrite `#abstract` without affecting `#conclusion`.

3. View diffs and restore prior versions of specific sections.

**Technical Notes:**

- Store versions client-side (aligns with Venice’s privacy model).

- Provide context to AI (e.g., surrounding text) for coherent section edits.

**UI Needs:**

- Sidebar for version history/diffs.

- Inline "Edit with AI" buttons per section.

**Impact:** Streamlines workflows for technical writing, documentation, and collaboration.