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_steps.md

@@ -0,0 +1,112 @@
+# Steps API Reference
+
+See Source
+
+See Output
+
+  * Account Created
+  * Profile Setup
+  * Verification
+
+[code]
+
+    def ex_steps2():
+        return Steps(
+            LiStep("Account Created", cls=StepT.primary),
+            LiStep("Profile Setup", cls=StepT.neutral),
+            LiStep("Verification", cls=StepT.neutral),
+            cls="w-full")
+    
+[/code]
+
+See Source
+
+See Output
+
+  * Project Planning
+  * Design Phase
+  * Development
+  * Testing
+  * Deployment
+
+[code]
+
+    def ex_steps3():
+        return Steps(
+        LiStep("Project Planning", cls=StepT.success, data_content="📝"),
+        LiStep("Design Phase", cls=StepT.success, data_content="💡"),
+        LiStep("Development", cls=StepT.primary, data_content="🛠️"),
+        LiStep("Testing", cls=StepT.neutral, data_content="🔎"),
+        LiStep("Deployment", cls=StepT.neutral, data_content="🚀"),
+        cls=(StepsT.vertical, "min-h-[400px]"))
+    
+[/code]
+
+# API Docs
+
+### Steps
+
+Source
+
+[code]
+
+    Steps(*li, cls='', **kwargs) -> fastcore.xml.FT
+[/code]
+
+> Creates a steps container
+
+**Params**
+
+  * `li` Each `Li` represent a step (generally use `LiStep`)
+
+  * `cls` class for Steps (generally a `StepsT` option)
+
+  * `kwargs`
+
+**Returns:** Ul(..., cls='steps')
+
+* * *
+
+### StepsT
+
+_Options for Steps_
+
+Option | Value | Option | Value  
+---|---|---|---  
+vertical | steps-vertical | horizonal | steps-horizonal  
+  
+### LiStep
+
+Source
+
+[code]
+
+    LiStep(*c, cls='', data_content=None, **kwargs) -> fastcore.xml.FT
+[/code]
+
+> Creates a step list item
+
+**Params**
+
+  * `c` Description for Step that goes next to bubble (often text)
+
+  * `cls` Additional step classes (generally a `StepT` component)
+
+  * `data_content` Content for inside bubble (defaults to number, often an emoji)
+
+  * `kwargs`
+
+**Returns:** Li(..., cls='step')
+
+* * *
+
+### StepT
+
+_Step styles for LiStep_
+
+Option | Value | Option | Value | Option | Value  
+---|---|---|---|---|---  
+primary | step-primary | secondary | step-secondary | accent | step-accent  
+info | step-info | success | step-success | warning | step-warning  
+error | step-error | neutral | step-neutral |  | 
+