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_lightbox.md

@@ -0,0 +1,99 @@
+# Lightbox API Reference
+
+See Source
+
+See Output
+
+Open
+
+[code]
+
+    def ex_lightbox1():
+        return LightboxContainer(
+            LightboxItem(Button("Open"), href='https://picsum.photos/id/100/1280/720.webp', data_alt='A placeholder image to demonstrate the lightbox', data_caption='This is my super cool caption'),
+        )
+    
+[/code]
+
+See Source
+
+See Output
+
+Open
+
+[code]
+
+    def ex_lightbox2():
+        return LightboxContainer(
+            LightboxItem(Button("Open"), href='https://picsum.photos/id/100/1280/720.webp', data_alt='A placeholder image to demonstrate the lightbox', data_caption='Image 1'),
+            LightboxItem(href='https://picsum.photos/id/101/1280/720.webp', data_alt='A placeholder image to demonstrate the lightbox', data_caption='Image 2'),
+            LightboxItem(href='https://picsum.photos/id/102/1280/720.webp', data_alt='A placeholder image to demonstrate the lightbox', data_caption='Image 3'),
+        )
+    
+[/code]
+
+See Source
+
+See Output
+
+mp4YoutubeVimeoIframe
+
+[code]
+
+    def ex_lightbox3():
+        return LightboxContainer(
+            LightboxItem(Button("mp4"), href='https://yootheme.com/site/images/media/yootheme-pro.mp4'),
+            LightboxItem(Button("Youtube"), href='https://www.youtube.com/watch?v=c2pz2mlSfXA'),
+            LightboxItem(Button("Vimeo"), href='https://vimeo.com/1084537'),
+            LightboxItem(Button("Iframe"), data_type='iframe', href='https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d4740.819266853735!2d9.99008871708242!3d53.550454675412404!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x0%3A0x3f9d24afe84a0263!2sRathaus!5e0!3m2!1sde!2sde!4v1499675200938'))
+    
+[/code]
+
+### LightboxContainer
+
+Source
+
+[code]
+
+    LightboxContainer(*lightboxitem, data_uk_lightbox='counter: true', **kwargs) -> fastcore.xml.FT
+[/code]
+
+> Lightbox container that will hold `LightboxItems`
+
+**Params**
+
+  * `lightboxitem` `LightBoxItem`s that will be inside lightbox
+
+  * `data_uk_lightbox` See https://franken-ui.dev/docs/2.0/lightbox for advanced options
+
+  * `kwargs`
+
+**Returns:** Lightbox
+
+### LightboxItem
+
+Source
+
+[code]
+
+    LightboxItem(*c, href, data_alt=None, data_caption=None, cls='', **kwargs) -> fastcore.xml.FT
+[/code]
+
+> Anchor tag with appropriate structure to go inside a `LightBoxContainer`
+
+**Params**
+
+  * `c` Component that when clicked will open the lightbox (often a button)
+
+  * `href` Href to image, youtube video, vimeo, google maps, etc.
+
+  * `data_alt` Alt text for the lightbox item/image
+
+  * `data_caption` Caption for the item that shows below it
+
+  * `cls` Class for the A tag (often nothing or `uk-btn`)
+
+  * `kwargs`
+
+**Returns:** A(... href, data_alt, cls., ...)
+