feat: initial project setup with implementation plan

- Add PLAN.md with 40-step checklist across 10 phases
- Add CLAUDE.md with project-specific instructions
- Set up nix flake with FastHTML/MonsterUI dependencies
- Create Python package skeleton (src/animaltrack)
- Vendor FastHTML and MonsterUI documentation
- Add Docker build configuration

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/vendor/monsterui/api_ref/docs_dividers.md

@@ -0,0 +1,122 @@
+# Dividers API Reference
+
+### Divider
+
+Source
+
+[code]
+
+    Divider(*c, cls=('my-4', <DividerT.icon: 'uk-divider-icon'>), **kwargs) -> fastcore.xml.FT
+[/code]
+
+> Divider with default styling and margin
+
+**Params**
+
+  * `c` contents of Divider tag (often nothing)
+
+  * `cls` Classes in addition to Divider styling
+
+  * `kwargs`
+
+**Returns:** Hr(..., cls='uk-divider-icon') or Div(..., cls='uk-divider-vertical')
+
+* * *
+
+### DividerT
+
+_Divider Styles from https://franken-ui.dev/docs/divider_
+
+Option | Value | Option | Value  
+---|---|---|---  
+icon | uk-divider-icon | sm | uk-divider-sm  
+vertical | uk-divider-vertical |  |   
+  
+See Source
+
+See Output
+
+Small Divider
+
+* * *
+
+Vertical Divider
+
+Icon Divider
+
+* * *
+[code]
+
+    def ex_dividers():
+        return Div(
+            P("Small Divider"),
+            Divider(cls=DividerT.sm),
+            DivCentered(
+                P("Vertical Divider"),
+                Divider(cls=DividerT.vertical)),
+            DivCentered("Icon Divider"),
+            Divider(cls=DividerT.icon))
+    
+[/code]
+
+### DividerSplit
+
+Source
+
+[code]
+
+    DividerSplit(*c, cls=(), line_cls=(), text_cls=())
+[/code]
+
+> Creates a simple horizontal line divider with configurable thickness and vertical spacing
+
+**Params**
+
+  * `c`
+
+  * `cls`
+
+  * `line_cls`
+
+  * `text_cls`
+
+See Source
+
+See Output
+
+Or continue with
+
+[code]
+
+    def ex_dividersplit():
+        return DividerSplit(P("Or continue with", cls=TextPresets.muted_sm))
+    
+[/code]
+
+### DividerLine
+
+Source
+
+[code]
+
+    DividerLine(lwidth=2, y_space=4)
+[/code]
+
+> **Params**
+
+  * `lwidth`
+
+  * `y_space`
+
+See Source
+
+See Output
+
+* * *
+[code]
+
+    def ex_dividerline(): 
+        return DividerLine()
+    
+[/code]
+