feat: workout-suggester, weather-aware workouts from a local Gemma

Go + Templ + HTMX app that checks the weather (Open-Meteo, MET Norway
fallback), scores run/ride/walk with plain rules, and has a local
open-weight model (Gemma 4 E2B via any OpenAI-compatible server) write
the plan. Routes are loops from your door (BRouter) plus signposted
OpenStreetMap routes (Overpass), with GPX export.

scripts/e2e.py

@@ -0,0 +1,68 @@
+# /// script
+# requires-python = ">=3.11"
+# dependencies = ["playwright"]
+# ///
+"""Browser end-to-end test: taps "📍 Here" (with a faked GPS fix), waits for
+the coach's streamed advice and the route map, asks a follow-up, and saves
+screenshots.
+
+    uv run scripts/e2e.py [--url http://127.0.0.1:3000] [--dark] [--mobile]
+"""
+import argparse, sys
+from playwright.sync_api import sync_playwright, expect
+
+p = argparse.ArgumentParser()
+p.add_argument("--url", default="http://127.0.0.1:3000")
+p.add_argument("--channel", default="msedge", help="installed browser: chrome, msedge, ...")
+p.add_argument("--out", default="docs")
+p.add_argument("--dark", action="store_true")
+p.add_argument("--mobile", action="store_true")
+p.add_argument("--lat", type=float, default=51.0543)
+p.add_argument("--lon", type=float, default=3.7174)
+args = p.parse_args()
+
+name = "screenshot" + ("-mobile" if args.mobile else "") + ("-dark" if args.dark else "")
+viewport = {"width": 400, "height": 860} if args.mobile else {"width": 1000, "height": 900}
+
+with sync_playwright() as pw:
+    browser = pw.chromium.launch(channel=args.channel, headless=True)
+    ctx = browser.new_context(
+        viewport=viewport,
+        color_scheme="dark" if args.dark else "light",
+        geolocation={"latitude": args.lat, "longitude": args.lon},
+        permissions=["geolocation"],
+        device_scale_factor=2,
+    )
+    page = ctx.new_page()
+    errors = []
+    page.on("pageerror", lambda e: errors.append(str(e)))
+    page.goto(args.url)
+    page.evaluate("localStorage.clear()")
+    page.reload()
+
+    expect(page.locator("#health .dot.ok")).to_be_visible(timeout=10_000)
+    page.get_by_text("🔥 Hard").click()
+    page.get_by_text("📍 Here").click()  # locates and submits
+
+    expect(page.locator(".weather")).to_be_visible(timeout=20_000)
+    expect(page.locator(".score.picked")).to_be_visible()
+    expect(page.locator("#thread .markdown")).to_be_visible(timeout=180_000)
+    if page.locator(".score.indoor.picked").count() == 0:
+        expect(page.locator(".routes .map.leaflet-container")).to_be_visible(timeout=60_000)
+        page.wait_for_timeout(1500)  # tiles
+
+    page.screenshot(path=f"{args.out}/{name}.png", full_page=True)
+
+    page.get_by_text("⏱️ Only 30 min").click()
+    expect(page.locator("#thread .markdown")).to_have_count(2, timeout=180_000)
+    replies = page.locator("#thread .markdown").all_inner_texts()
+    print("--- plan ---\n" + replies[0] + "\n--- follow-up ---\n" + replies[1])
+
+    page.reload()  # the plan survives a reload
+    expect(page.locator("#thread .markdown")).to_have_count(2)
+
+    browser.close()
+    if errors:
+        print("page errors:", errors, file=sys.stderr)
+        sys.exit(1)
+    print(f"ok: {args.out}/{name}.png")