feat: add edit/delete buttons to list views and inline privacy toggle

Fave cards in the list and profile views now show edit, delete, and
privacy toggle buttons directly — no need to open the detail page first.

- New POST /faves/{id}/privacy route with HTMX privacy toggle partial
- New UpdatePrivacy store method for single-column update
- fave_list.html: edit link, HTMX delete, privacy toggle on every card
- profile.html: edit/delete for owner's own cards
- privacy_toggle.html: new HTMX partial that swaps inline on toggle
- CSS: compact .fave-card-actions styles

The existing handleFaveDelete already returns empty 200 for HTMX
requests, so hx-target="closest article" hx-swap="outerHTML" removes
the card from DOM seamlessly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

web/templates/pages/fave_list.html

@@ -21,9 +21,6 @@
                         <a href="{{basePath}}/faves/{{.ID}}">
                             <strong>{{.Description}}</strong>
                         </a>
-                        {{if eq .Privacy "private"}}
-                            <small class="badge-private" aria-label="Privat">Privat</small>
-                        {{end}}
                     </header>
                     {{if .Tags}}
                         <footer>
@@ -32,6 +29,27 @@
                             {{end}}
                         </footer>
                     {{end}}
+                    <footer class="fave-card-actions">
+                        <span class="privacy-toggle" id="privacy-{{.ID}}">
+                            <button
+                                hx-post="{{basePath}}/faves/{{.ID}}/privacy"
+                                hx-target="#privacy-{{.ID}}"
+                                hx-swap="outerHTML"
+                                class="fave-action-btn {{if eq .Privacy "private"}}secondary{{end}}"
+                                title="{{if eq .Privacy "public"}}Gjør privat{{else}}Gjør offentlig{{end}}"
+                            >{{if eq .Privacy "public"}}Offentlig{{else}}Privat{{end}}</button>
+                        </span>
+                        <a href="{{basePath}}/faves/{{.ID}}/edit" class="fave-action-link"
+                           aria-label="Rediger {{.Description}}">Rediger</a>
+                        <button
+                            hx-delete="{{basePath}}/faves/{{.ID}}"
+                            hx-confirm="Er du sikker på at du vil slette denne favoritten?"
+                            hx-target="closest article"
+                            hx-swap="outerHTML"
+                            class="fave-action-btn secondary"
+                            aria-label="Slett {{.Description}}"
+                        >Slett</button>
+                    </footer>
                 </article>
             {{end}}
         </div>

web/templates/pages/profile.html

@@ -75,6 +75,20 @@
                                     {{end}}
                                 </footer>
                             {{end}}
+                            {{if $d.IsOwner}}
+                                <footer class="fave-card-actions">
+                                    <a href="{{basePath}}/faves/{{.ID}}/edit" class="fave-action-link"
+                                       aria-label="Rediger {{.Description}}">Rediger</a>
+                                    <button
+                                        hx-delete="{{basePath}}/faves/{{.ID}}"
+                                        hx-confirm="Er du sikker på at du vil slette denne favoritten?"
+                                        hx-target="closest article"
+                                        hx-swap="outerHTML"
+                                        class="fave-action-btn secondary"
+                                        aria-label="Slett {{.Description}}"
+                                    >Slett</button>
+                                </footer>
+                            {{end}}
                         </article>
                     {{end}}
                 </div>