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/examples/auth.md

@@ -0,0 +1,40 @@
+"""FrankenUI Auth Example built with MonsterUI (original design by ShadCN)"""
+
+from fasthtml.common import *
+from monsterui.all import *
+from fasthtml.svg import *
+
+app, rt = fast_app(hdrs=Theme.blue.headers())
+
+@rt
+def index():    
+    left = Div(cls="col-span-1 hidden flex-col justify-between bg-zinc-900 p-8 text-white lg:flex")(
+        Div(cls=(TextT.bold))("Acme Inc"),
+        Blockquote(cls="space-y-2")(
+            P(cls=TextT.lg)('"This library has saved me countless hours of work and helped me deliver stunning designs to my clients faster than ever before."'),
+            Footer(cls=TextT.sm)("Sofia Davis")))
+
+    right = Div(cls="col-span-2 flex flex-col p-8 lg:col-span-1")(
+        DivRAligned(Button("Login", cls=ButtonT.ghost)),
+        DivCentered(cls='flex-1')(
+            Container(
+                DivVStacked(
+                    H3("Create an account"),
+                    Small("Enter your email below to create your account", cls=TextT.muted)),
+                Form(
+                    Input(placeholder="name@example.com"),
+                    Button(Span(cls="mr-2", uk_spinner="ratio: 0.54"), "Sign in with Email", cls=(ButtonT.primary, "w-full"), disabled=True),
+                    DividerSplit(Small("Or continue with"),cls=TextT.muted),
+                    Button(UkIcon('github',cls='mr-2'), "Github", cls=(ButtonT.default, "w-full")),
+                    cls='space-y-6'),
+                DivVStacked(Small(
+                        "By clicking continue, you agree to our ",
+                        A(cls=AT.muted, href="#demo")("Terms of Service")," and ",
+                        A(cls=AT.muted, href="#demo")("Privacy Policy"),".",
+                        cls=(TextT.muted,"text-center"))),
+                cls="space-y-6")))
+    
+    return Title("Auth Example"),Grid(left,right,cols=2, gap=0,cls='h-screen')
+
+
+serve()