Move the package into src/

Thirty-seven entries in the root, most of them .go files. The assets had to
come along: //go:embed cannot reach outside its own directory, so
templates/, static/ and migrations/ live beside the code that embeds them,
and testdata/ beside the test that reads it. storage/ stays put — runtime
data, not source.

go build now needs -o. Without it the output would be named after the
package directory and collide with src/ itself.

src/templates/profile.html

@@ -0,0 +1,67 @@
+{{define "content"}}
+{{$p := .Data}}
+<div class="profilehead">
+  {{if $p.Avatar}}
+    <img class="avatar big" src="/avatars/{{$p.ID}}" alt="">
+  {{else}}
+    <span class="avatar big">{{$p.Initials}}</span>
+  {{end}}
+  <div>
+    <h1>{{$p.Name}}</h1>
+    <p class="muted">Liittyi {{fidate $p.CreatedAt}}{{if $p.Email}} · {{$p.Email}}{{end}}</p>
+  </div>
+</div>
+
+<div class="statgrid">
+  <div class="statcard"><span class="statvalue">{{$p.Stats.SongsSubmitted}}</span><span class="muted small">kappaletta</span></div>
+  <div class="statcard"><span class="statvalue">{{$p.Stats.ReviewsWritten}}</span><span class="muted small">arvostelua</span></div>
+
+  <!-- The one comparison that says something about a person, in the same language as the review
+       form: what they give versus what they get. -->
+  <div class="statcard wide">
+    <div class="channels compare">
+      {{if $p.Stats.AverageGiven}}
+        <div class="chan" style="--v: {{score $p.Stats.AverageGiven}}">
+          <span class="chan-track"><span class="chan-cap"></span></span>
+          <span class="chan-score">{{score $p.Stats.AverageGiven}}</span>
+          <span class="chan-who">antanut</span>
+        </div>
+      {{end}}
+      {{if $p.Stats.AverageReceived}}
+        <div class="chan own" style="--v: {{score $p.Stats.AverageReceived}}">
+          <span class="chan-track"><span class="chan-cap"></span></span>
+          <span class="chan-score">{{score $p.Stats.AverageReceived}}</span>
+          <span class="chan-who">saanut</span>
+        </div>
+      {{end}}
+      {{if and (not $p.Stats.AverageGiven) (not $p.Stats.AverageReceived)}}
+        <p class="muted small">Ei vielä pisteitä kumpaankaan suuntaan.</p>
+      {{end}}
+    </div>
+  </div>
+</div>
+
+{{if $p.Own}}
+<details class="editbox">
+  <summary>Muokkaa tietoja</summary>
+  <form method="post" action="/profile" enctype="multipart/form-data" class="stack">
+    <label>Nimi <input name="name" value="{{$p.Name}}" maxlength="50" required></label>
+    <label>Sähköposti <input type="email" name="email" value="{{$p.Email}}" required></label>
+    <label>Kuva <input type="file" name="avatar" accept="image/*"></label>
+    <label>Nykyinen salasana <input type="password" name="current_password" autocomplete="current-password"></label>
+    <label>Uusi salasana <input type="password" name="new_password" autocomplete="new-password"></label>
+    <button type="submit">Tallenna</button>
+  </form>
+  <p class="muted small">Salasanan vaihto vaatii nykyisen salasanan ja kirjaa ulos muut laitteesi.</p>
+</details>
+{{end}}
+
+<section>
+  <h2>Kappaleet</h2>
+  {{if $p.Songs}}
+    <div class="songgrid">{{range $p.Songs}}{{template "songcard" .}}{{end}}</div>
+  {{else}}
+    <p class="muted">Ei vielä yhtään kappaletta.</p>
+  {{end}}
+</section>
+{{end}}