feat: phase 1 public site skeleton — layout, routes, CSS, logo pipeline

Ship base Jinja layout (header/nav/main/footer with skip link and aria-current),
mobile-first single-file CSS using the ROADMAP palette tokens, and four public
routes: /, /about, /contact, /shop. Blog index renders via a stable
PostService.list_published() stub returning [] — Phase 2 only swaps the body.
About is static placeholder copy, /contact ships an inert form plus a mailto:
link driven by ADMIN_CONTACT_EMAIL, /shop shows a "Coming soon" card.

Adds a Pillow-based scripts/generate_static_assets.py producing resized logo
PNG + WebP, multi-size favicon.ico, and a 180x180 apple-touch-icon on a cream
background. Outputs committed for a reproducible build.

Also ship docs/MANUAL_TESTING.md with per-route / responsive / a11y / static-
asset checklists, and mark Phase 1 complete in docs/ROADMAP.md.

app/routes/public.py

@@ -0,0 +1,125 @@
+"""Public-facing HTTP routes.
+
+Phase 1 scope:
+
+- ``GET /``        — blog index (currently empty list from the stub service).
+- ``GET /about``   — static placeholder copy.
+- ``GET /contact`` — inert contact form UI + optional ``mailto:`` link.
+- ``GET /shop``    — "Coming soon" card.
+
+Every handler is thin: it resolves its dependencies, calls any service
+methods it needs, and delegates rendering to a Jinja template. No HTML is
+constructed in Python.
+"""
+
+from __future__ import annotations
+
+from fastapi import APIRouter, Depends, Request
+from fastapi.responses import HTMLResponse
+from fastapi.templating import Jinja2Templates
+
+from app.config import Settings, get_settings
+from app.models.posts import PostSummary
+from app.services.posts import PostService, get_post_service
+
+
+# Module-level router. Mounted without a prefix by ``app.main.create_app``
+# so the routes below live at the site root.
+router: APIRouter = APIRouter(tags=["public"])
+
+
+def get_templates(request: Request) -> Jinja2Templates:
+    """Return the shared :class:`Jinja2Templates` instance.
+
+    The singleton is attached to ``app.state.templates`` in
+    :func:`app.main.create_app`. Looking it up via ``request.app.state``
+    (rather than importing from ``app.main``) avoids an import cycle and
+    keeps the handlers test-friendly — tests can swap out the instance by
+    mutating ``app.state.templates`` before issuing requests.
+    """
+    return request.app.state.templates
+
+
+@router.get("/", response_class=HTMLResponse, summary="Blog index")
+def home(
+    request: Request,
+    templates: Jinja2Templates = Depends(get_templates),
+    posts: PostService = Depends(get_post_service),
+) -> HTMLResponse:
+    """Render the blog index with any published posts.
+
+    In Phase 1 the service returns an empty list, so the template shows a
+    friendly "no posts yet" state. Phase 2 will populate the list from
+    SQLite without any changes to this handler.
+    """
+    # Query the service layer for the most recent published posts. The
+    # template handles the empty-list case; we do not branch here.
+    summaries: list[PostSummary] = posts.list_published()
+    return templates.TemplateResponse(
+        request,
+        "public/home.html",
+        {"posts": summaries, "active_nav": "home"},
+    )
+
+
+@router.get("/about", response_class=HTMLResponse, summary="About the farm")
+def about(
+    request: Request,
+    templates: Jinja2Templates = Depends(get_templates),
+) -> HTMLResponse:
+    """Render the static About page.
+
+    Copy is deliberately generic and does not reveal the farm's street
+    address (Morrison, TN is mentioned; the physical address is not —
+    see CLAUDE.md). Head Hen will replace this content via the Phase 4
+    admin CMS.
+    """
+    return templates.TemplateResponse(
+        request,
+        "public/about.html",
+        {"active_nav": "about"},
+    )
+
+
+@router.get("/contact", response_class=HTMLResponse, summary="Contact the farm")
+def contact(
+    request: Request,
+    templates: Jinja2Templates = Depends(get_templates),
+    settings: Settings = Depends(get_settings),
+) -> HTMLResponse:
+    """Render the inert contact page.
+
+    The form fields are marked ``disabled`` and the form has no ``method``
+    attribute — it is UI-only. If ``ADMIN_CONTACT_EMAIL`` is configured
+    the template renders a ``mailto:`` link so visitors still have a way
+    to reach the farm before Phase 5 wires up the real POST flow.
+    """
+    return templates.TemplateResponse(
+        request,
+        "public/contact.html",
+        {
+            "active_nav": "contact",
+            # None when unset; the template hides the mailto link in that
+            # case. We pass the value through settings so tests can
+            # override it without touching environment variables.
+            "contact_email": settings.admin_contact_email,
+        },
+    )
+
+
+@router.get("/shop", response_class=HTMLResponse, summary="Shop placeholder")
+def shop(
+    request: Request,
+    templates: Jinja2Templates = Depends(get_templates),
+) -> HTMLResponse:
+    """Render the "Coming soon" placeholder for the future shop.
+
+    The nav link to ``/shop`` remains enabled so visitors can preview the
+    offering; it is the landing page itself that signals the shop is not
+    yet live. Phase 7 replaces this template with the real catalog.
+    """
+    return templates.TemplateResponse(
+        request,
+        "public/shop.html",
+        {"active_nav": "shop"},
+    )