Add /about page with rating system explanation

Introduces a public-facing /about page that explains the 1-3 star rating rubric with real examples pulled from the diary. Each star tier displays 3 randomly-selected, unique films (deduplicated by title to avoid rewatch duplicates).

Changes:
- New routers/about.py: GET /about queries films by stars, dedupes, randomizes
- New templates/about.html: Page with eyebrow, h1, three tier sections with example film cards, closing philosophy, and View Profile button
- main.py: Import about router, register it, add /about to public_paths in AuthMiddleware
- templates/base.html: Add About nav link after Stats
- templates/profile.html: Add About link to /tyler nav
- templates/login.html: Add About and View Profile buttons in footer, plus "Made with Lumière" repo link

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

1 files changed, 3 insertions, 2 deletions

diff --git a/main.py b/main.py
index a861cda..6b1a06b 100644
--- a/main.py
+++ b/main.py
@@ -9,14 +9,14 @@ from starlette.middleware.sessions import SessionMiddleware
 from starlette.middleware.base import BaseHTTPMiddleware
 
 from database import init_db
-from routers import auth, films, imports as imports_router, profile, stats, tmdb
+from routers import about, auth, films, imports as imports_router, profile, stats, tmdb
 
 load_dotenv()
 
 
 class AuthMiddleware(BaseHTTPMiddleware):
     async def dispatch(self, request: Request, call_next):
-        public_paths = {"/login", "/logout", "/tyler", "/films/partial"}
+        public_paths = {"/about", "/login", "/logout", "/tyler", "/films/partial"}
         path = request.url.path
 
         if path.startswith("/static") or path in public_paths:
@@ -42,6 +42,7 @@ app.add_middleware(AuthMiddleware)
 app.add_middleware(SessionMiddleware, secret_key=session_secret)
 
 app.mount("/static", StaticFiles(directory="static"), name="static")
+app.include_router(about.router)
 app.include_router(auth.router)
 app.include_router(profile.router)
 app.include_router(tmdb.router)